Top temperatures will be around 25 Celsius, 77 Fahrenheit and it will feel humid with little in the way of wind.

If you don't like the heat, then head to the coast and beaches where sea breezes will keep things refreshingly cooler, about 15 Celsius in Rhyl and 13 Celsius in Fishguard. This is because the sea temperature is still quite cool around 10 or 11 Celsius.

On Friday and over the weekend, an easterly breeze will pick-up making it feel fresher but staying dry and sunny.

Friday is likely to be the hottest day of the week with temperatures soaring as high as 26 Celsius, even on the west coast with a breeze off the land. The sun will be very strong too so don't forget your hat and suncream.

By Sunday evening, if not before, some rain and thundery showers over the West Country may spread into Wales.

Next week looks like turning cooler and more unsettled with changeable weather expected in June so enjoy the hot and sunny weather while it lasts!

High pressure looks set to bring most of us a taste of summer with plenty of sunshine and becoming warmer too.

The highest temperature recorded in Wales so far this year was in Porthmadog in Gwynedd, 22.2 Celsius, 72 Fahrenheit on March 24, but I think somewhere will beat that this week.

It's not all plain sailing though as some coasts will be cooler with sea breezes and a risk of sea mist/ fog mainly around the Irish Sea.

While Pembrokeshire may be disappointingly cloudy tomorrow with temperatures only 14 Celsius in St. Davids and Manorbier compared to 21 Celsius in Cardiff, Brecon, Wrexham and Knighton.

The Olympic torch reaches Wales this Friday, 25 May and it should be dry and warm with a breeze in Monmouth and Abergavenny.

Breezy too in Pontypool and Cardiff and a risk of a shower in places.

As for the weekend, at the moment it looks like turning cooler and breezy with east to north-east winds. Saturday may turn out fine, clear and sunny but on Sunday cloud may bring showers.

Beyond that, the signs are it will turn more unsettled during the last week of May with low pressure bringing showers or longer spells of rain.

So make the most of the fine and warmer weather this week if you can and don't forget the suncream.

Derek

Most of the rain is likely tonight. Tomorrow will start cloudy and damp, especially in mid Wales and the north. But the light rain and drizzle will tend to die out during the day. In parts of the south and west it should stay dry and brighten-up with a few scattered showers breaking out.

Top temperatures tomorrow in the brighter south will be around 16 Celsius and with light winds it will feel pleasant in the sunshine. In the cloudier north it will be cooler, nearer 11 to 14 Celsius.

Sunday's chart shows low pressure over France so unsettled weather there and for Iberia and north Africa as well.

Met Office chart for Sunday 20 May

Sunday is not a bad day overall. I wouldn't rule out a shower but most places will be dry. Plenty of cloud but the north and west should be much brighter with a good deal of sunshine. Highest temperatures will be 13 to 16 Celsius with a light to moderate north to north-easterly breeze.

Next week the signs are the weather will improve. Confidence is high in a more settled spell of weather. Sunny spells and becoming warmer too. This will be a welcome change after all the poor weather we've had since March.

So mixed weather this weekend but hopefully a taste of summer on the way next week. And about time too!

Cumulus clouds, from Garnswllt looking towards north Gower Coast. Photo: Ted Williams

It's still not that warm for the time of year with temperatures 10 to 14 Celsius across the country this afternoon but at least the wind is lighter than yesterday so out of the breeze and in the sunshine it feels very pleasant.

As expected last night was cold for May with a widespread ground frost. Temperatures in Cardiff dropped to 2 Celsius but in Powys it was colder. Tirabad recorded -1 Celsius with a slight air frost.

Tonight will be less cold with cloud spreading in after midnight. Lowest temperatures between 3 and 7 Celsius with light winds.

Tomorrow will be much cloudier than today. A little rain in the north in the morning. The south drier and brighter. Tomorrow afternoon much of the country should be dry with a little sunshine in places. Top temperatures 11 to 14 Celsius with an east or south-easterly breeze. The wind mainly light but moderate on the Bristol Channel coast.

On Friday and over the weekend low pressure will take control which means mixed weather.

Met Office chart for 16 May

Some rain and showers but not a total washout. A few sunny intervals are likely. Breezy on Sunday.

The air over us has come all the way from Spitzbergan in the Arctic so no wonder it's a bit nippy!

There has been some sunshine but also a few sharp showers, hail in places and a dusting of snow on the higher hills and mountains including Snowdonia and the Brecon Beacons.

A pheasant in the hail yesterday by Ray Stobbart, Denbigh.

Tonight the wind will ease and temperatures will take a tumble, falling close to freezing inland with a widespread ground frost in the countryside.

Tomorrow will be more settled thanks to high pressure but I wouldn't rule out a light shower in places, otherwise it will be dry with sunny spells.

The best of the sunshine will be in the north and west, especially towards the coast. Top temperatures reaching 10 and 14 Celsius in the afternoon with light and variable winds.

Thursday and Friday will be mostly cloudy with some rain and showers with most of the rain in the north and drier in the south.

At the moment, the weekend looks cool and breezy with north-easterly winds. There is a risk of some showery rain is expected at times although Sunday may turn out dry and brighter with sunny spells.

So wrap-up warm, watch out for Jack Frost tonight and enjoy the sunshine tomorrow

Derek

St. Athan in the Vale of Glamorgan was the sunniest place in the UK yesterday with almost 14 hours of sunshine. While in Bute Park, Cardiff the temperature rose to a respectable 16.3 Celsius, 61 Fahrenheit.

I took advantage of the glorious sunshine and visited Mumbles on Saturday. Then went for a walk on Sunday in the Vale of Glamorgan. The views were stunning on both days

It's a shame the fine weather couldn't last for longer. Last night brought a change, with wet and windy weather spreading from the north-west. At Aberdaron on the Llyn Peninsula, a wind gust of 57mph was recorded.

The rest of this week looks very changeable to say the least with a mixture of cloud, rain, showers and sunshine as well.

Some of the showers will be heavy with a risk of hail and thunder and with winds from the Arctic tomorrow, a little snow is likely on the mountains. The nights will also be cold with ground frost, especially in the countryside.

Wednesday looks like the driest and sunniest day of the week with high pressure close by. But it won't hang around for long, so don't bank on next weekend being as nice as the last one.

At the moment, it's looking cool and breezy with a little rain or showers. However, on a brighter note, Sunday may turn out drier and sunnier - if we are lucky.

Derek

But they say every cloud has a silver lining and following the recent downpours, the drought is over in south west England, the Midlands and parts of Yorkshire according to the Environment Agency.

I think we have seen the worst of the rain for the time being. The weather is improving today, pressure is rising and we are in for a much drier and sunnier weekend for a change.

A few clouds will build-up inland tomorrow and I wouldn't rule out the odd light shower but you'd be very lucky to catch one and most places will stay dry. Many coasts and beaches will enjoy a good dose (about 14 hours) of sunshine.

Day-time temperatures won't be that high for May, 12 to 15 Celsius in the shade in the afternoon, but with lighter winds and sunshine it will feel pleasantly warm.

And don't forget the suncream, the sun is strong given the longest day is only a few weeks away. Factor 15 or higher is best. While at night, it will turn chilly, especially inland.

Tomorrow the barometric pressure will be around 1040mb (30.71 inches of Mercury) corrected to mean sea level, the highest pressure we've had in Wales since February and March. If you fancy a paddle, the sea temperature is a refreshing 10 Celsius.

Sunday will serve up more dry weather. The sunshine hazier than Saturday with high clouds. The south westerly wind will gradually pick-up during the day as well, becoming strong and gusty in the north west.

The Vale of Glamorgan Walking Festival is on this weekend with lots of walks to suit all abilities and the weather will be fine.

If you're feeling energetic, a Thunder Walk is taking place in the Brecon Beacons National Park tomorrow - 54 miles in 24 hours.

In Llanberis, the Ras Moel Eilio is taking place tomorrow at 12pm. Conditions will be perfect for the runners.

Sunday night into Monday will turn wet and breezy. The rain will eventually clear on Monday followed by sunshine and showers and the rest of week looks changeable and rather cool.

So make the most of the dry weather and sunshine over the weekend.

Derek

It was a bit chilly over the weekend - in fact Christmas Day last year was warmer than last Saturday!

But despite the chill in the air, plenty of people turned-up for the official opening of the Wales Coast Path with special events taking place in Aberystwyth, Flint Castle and Cardiff Bay.

I had a great time in Aberystwyth and then went onto Tregaron where the 2nd Bro Tregaron Walking Weekend was in full swing.

On Sunday I did a walk to Llanddewi Brefi and wasn't the only walker in the village - there were over 300 walkers from various parts of the UK.

There was also a "Super Moon" over the weekend which was 14% bigger and 30% brighter than other full moons this year.

If you missed it, there is another chance in four weeks time during the next full Moon on 4 June. This full Moon will only be about 1000 miles farther away from us and less than 1% smaller than the Super Moon on 5 May.

Think you can notice the difference? We'll have to wait until 4 June and hope for a clear sky...

Weather-wise, we enjoyed a break from the rain yesterday but there is more wet weather on the way today and on Thursday and the Met Office has issued another warning of heavy rain.

Later in the week, the weather is set to improve. Friday will be drier and brighter with a few showers and a cool north-westerly breeze. At the moment, the weather looks quite promising for the weekend.

Saturday the best day thanks to a ridge of high pressure; not that warm but dry with sunny spells and lighter winds. Sunday should be dry too but cloudier and breezier with more rain expected next Monday.

Longer term, there is no sign of any prolonged, settled weather on the horizon but there is hint that the third week of May could bring us something warmer with higher temperatures.

Lets hope so, mind you I will believe it when it happens and in the meantime keep the umbrella handy!

Derek

The highest gusts recorded were 71mph at Mumbles Head in Swansea, 68mph at Aberdaron on the Lleyn Peninsula, 57mph at Aberporth and 55mph at Cardiff Airport.

In the UK it was the wettest April since records began in 1910 but some parts of the country had more rain than others. Northern Ireland was slightly drier than average.

While east and north-east England had two and a half times the normal April rainfall. This is a lot of rain but one wet month is not enough to end the drought in England given the lack of rain over the past year or two.

In Wales, around 150mm (6 inches) of rain fell in April. Making it one of the wettest Aprils for 100 years! And five times more rainfall than April 2011.

The average rainfall in April in Wales is 86mm. John Goodger who runs a weather station at Velindre near Glasbury in Powys has been recording weather for 40 years.

There has been more heavy rain in Powys today. At the time of writing there are two flood warnings in force on the River Monnow and several flood alerts.

Tonight the whole of Wales will become dry and tomorrow will be much drier than today allowing river levels to drop.

Tomorrow night a few showers otherwise dry. However rain may spread into the south later in the night.

On Thursday the south could be wet with heavy rain for a time. The rain may spread into Mid Wales but northern parts may stay dry and bright with sunshine.

Friday should be dry apart from the odd shower and a little rain in the north. As for the bank holiday weekend, don't bank on it being warm. It looks like turning cooler.

Showers are likely but with some dry and bright weather as well and at night it may be cold enough for a touch of frost inland.

Derek

A few places saw the sun today and stayed dry but many others have been wet with heavy downpours in Mid Wales and the north.

But we're not out of the woods yet. There is still a Met Office heavy rain warning in force until 10pm tonight.

Tonight heavy rain in the north and north-east will slowly ease. Elsewhere showers will die down in some places.

It will be breezy on the north and west coast. Lighter winds inland with lowest temperatures 6 to 8 Celsius.

Tomorrow should be a bit better but still plenty of cloud. There will be some rain and a few showers but I can promise some dry weather too.

During the day it will brighten-up in places with the best of the sunshine on Anglesey, the Lleyn Peninsula and Pembrokeshire but feeling cool with a northerly breeze.

So, it's a bit mixed for day two of the Royal tour and cloudy and cool with spots of rain in Crickhowell and temperatures in Aberfan and Ebbw Vale only rising to 9 Celsius, 48 Fahrenheit.

As for the weekend. Saturday looks the best day with plenty of cloud, a few spots of rain or a shower but some dry and bright weather as well. Temperatures 10 to 14 Celsius with a light to moderate north-easterly breeze.

Mind you, it's a different story for Sunday as trouble is brewing over Spain with a developing area of low pressure expected to move north into the Bay of Biscay and English Channel.

This is unusual as normally the deep depressions that affect Britain start off over the Atlantic rather than the Costa del Sol!

So, Sunday at the time of writing, looks a washout with wet and windy weather and 20 to 40mm of rain, 1 to 2 inches possible. There will also be chilly, strong to gale force easterly winds which could bring down trees.

One of the wettest places was Tredegar where 28mm, over an inch of rain, fell and the highest official wind gust recorded was 55mph at Mumbles Head in Swansea.

Mike and Kathy Jenkins took this photo of rain coming down the Amman valley

There's more rain and showers to come in the next 24 hours. Torrential downpours in places with hail, thunder and localised flooding.

Met Office website: severe weather warnings

However, some places will be drier and brighter than others with a little sunshine. Friday will be cloudy and damp with rain or showers. And feeling cool, especially along the north and west coast. There might even be a little snow on Snowdon.

Over the weekend, Saturday should be drier and warmer. Still a few showers but more wet and windy weather may spread from the south overnight into Sunday. Longer term, there are signs that May will bring us some better and warmer weather but still changeable.

If you take any pictures of stormy weather please send them to me on email at dereksdiary@bbc.co.uk and don't forget you can follow me on twitter @derektheweather.

It will be a different story tomorrow as the weather takes a turn for the worse and will feel more like autumn than spring.

A spring storm, currently over the Atlantic, is heading our way bringing a spell of very wet and windy weather.

The Met Office has issued a warning of heavy rain. It's a yellow warning which means be aware. 20 to 50mm of rain are expected or 1 to 2 inches!

Southern Powys, the Heads of the Valleys and Monmouthshire including the Black Mountains could see some of the biggest rainfall totals. And not just rain, strong to gale force east to south-easterly winds as well.

Gusts 45 to 55 mph are likely on exposed coasts and hills and the wind could feasibly bring down a few trees given they are in full leaf. Some poor travelling conditions are highly likely as well along with rough seas.

Thursday will continue very unsettled with showers or longer spells of rain, heavy in places with thunder - so not the best of weather for a Royal visit.

Friday should be a bit brighter - still some showers but more in the way of dry weather in between, with a little sunshine in places.

The weekend promises to become a little warmer and drier for a time but it looks like more wet weather and heavy rain spreading up from the south.

Derek

Aberporth in Ceredigion enjoyed over 6 hours of sunshine yesterday and at Eglwyswen in Pembrokeshire the temperature reached a respectable 13.3 Celsius, 55 Fahrenheit.

I am sure you won't be surprised to hear that April is on course to be colder and wetter than average. The first month to have above average rainfall in Wales since last December.

This week will bring more heavy rain and showers. Wednesday will be the wettest and windiest day of the week with a deep Atlantic low pressure bringing a spell of inclement weather. It will also feel cold and unpleasant with daytime temperatures below 10 Celsius.

I am sure some people will be glad to see the back of April but we do need the rain, especially across the border in England.

There is hint it may get a little warmer next weekend and into the start of May but not completely dry, with thundery rain and showers possible.

The highest temperature recorded was just 12 Celsius at Milford Haven and in Cardiff.

Some places have enjoyed sunshine today but there has also been some wet weather with heavy rain and showers.

There have also been torrential downpours in places too with hail, thunder and even a little snow on the mountains.

Over the weekend, low pressure will trigger more heavy showers with hail and thunder but I can promise some dry weather and sunshine as well.

It will feel cool and breezy at times and inland cold enough at night for a touch of frost, especially in rural areas.

Next week, low pressure will bring more wind and rain followed by showers. The rest of April looks set to remain unsettled and that goes for the start of May too.

In England a lot more rain is needed to bring the drought to an end .

Derek