Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Summary

An area of low pressure and associated frontal systems will bring a risk of rain or thundery showers to many areas, although this will gradually clear eastwards through Sunday as a ridge of high pressure builds in from the west on Sunday night and into Monday.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney

    From Cape Wrath to Rattray Head including Orkney

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Easterly or southeasterly, becoming variable later, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly westerly 3 or 4, backing southerly or southwesterly 5 or 6 later, occasionally 7 later in far west.
    • Sea State

      Slight or moderate, occasionally smooth in Moray Firth.
    • Weather

      Showers at first, rain later.
    • Visibility

      Good, becoming moderate or poor later.

    Issued at 23:00 UTC on Saturday 27th Aug

  2. Rattray Head to Berwick on Tweed

    Rattray Head to Berwick on Tweed

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Easterly or northeasterly, becoming variable later, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly westerly or northwesterly, 3 or 4, backing westerly or southwesterly 4 or 5, occasionally 6 later in north.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Rain later.
    • Visibility

      Good, becoming moderate or poor later.

    Issued at 23:00 UTC on Saturday 27th Aug

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      East or southeast, backing north or northeast, 3 or 4, increasing 5 at times, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate, occasionally smooth at first.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable 3 or 4, becoming west 4 or 5 at times.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Northeast, becoming cyclonic, then becoming north, 4 or 5, increasing 6 at times, then becoming variable 3 or 4 later.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly west, 3 or 4.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Cyclonic at first in north, otherwise southwesterly, veering northwesterly later, 4 or 5, increasing 6 at times.
    • Sea State

      Smooth or slight, occasionally moderate.
    • Weather

      Thundery showers.
    • Visibility

      Good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northerly or northwesterly 4 or 5, becoming variable 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Saturday 27th Aug

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Westerly or southwesterly 4 or 5, increasing 6 at times, veering northwesterly 3 or 4 later.
    • Sea State

      Slight or moderate, occasionally smooth at first.
    • Weather

      Thundery showers.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly westerly or northwesterly, 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight, occasionally moderate at first.
    • Weather

      Showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Saturday 27th Aug

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      West or southwest 4 or 5, increasing 6 at times, veering northwest 3 or 4 later.
    • Sea State

      Slight or moderate, occasionally rough later offshore.
    • Weather

      Showers, perhaps thundery later.
    • Visibility

      Moderate or good, occasionally poor later.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      West or northwest 3 or 4, occasionally 5 later.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Fair.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Saturday 27th Aug

  8. Lyme Regis to Lands End including the Isles of Scilly * warning

    Lyme Regis to Lands End including the Isles of Scilly

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Southwest, veering west or northwest later, 4 or 5, occasionally 6 at first, decreasing 3 at times later.
    • Sea State

      Slight or moderate, occasionally rough in south and west.
    • Weather

      Showers, perhaps thundery for a time.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly west or northwest, 3 or 4, occasionally 5 at first.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  9. Lands End to St Davids Head including the Bristol Channel

    Lands End to St Davids Head including the Bristol Channel

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Southwest, veering west or northwest, 4 or 5, decreasing 3 at times.
    • Sea State

      Smooth at first in Bristol Channel, otherwise slight or moderate, occasionally rough in southwest.
    • Weather

      Showers, perhaps thundery for a time.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly west or northwest, 3 or 4, occasionally 5 later in Bristol Channel.
    • Sea State

      Slight, occasionally moderate at first, becoming smooth in Bristol Channel.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  10. St Davids Head to Great Ormes Head, including St Georges Channel

    St Davids Head to Great Ormes Head, including St Georges Channel

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Easterly 5 at first in north, otherwise variable 3 or 4, becoming northerly or northwesterly 4 or 5 at times.
    • Sea State

      Smooth or slight, becoming slight or moderate.
    • Weather

      Thundery showers at first.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly westerly or southwesterly, 3 or 4, occasionally 5 later.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  11. Great Ormes Head to the Mull of Galloway

    Great Ormes Head to the Mull of Galloway

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      East, backing north, then backing northwest later, 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight, becoming slight or moderate later.
    • Weather

      Thundery showers at first.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northwest, backing west or southwest, 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 23:00 UTC on Saturday 27th Aug

  12. Isle of Man

    Isle of Man

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      East, backing north, then backing northwest later, 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight, becoming slight or moderate later.
    • Weather

      Thundery showers at first.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northwest, backing west or southwest, 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate, becoming smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Northerly or northwesterly 3 or 4, increasing 5 at times, becoming variable 3 for a time in south.
    • Sea State

      Smooth or slight, occasionally moderate later.
    • Weather

      Thundery showers at first in southeast.
    • Visibility

      Good, occasionally poor at first in southeast.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northwesterly, becoming variable, 3 or 4, then becoming southerly or southwesterly 4 or 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Saturday 27th Aug

  14. The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

    The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Northerly or northeasterly, backing northwesterly later, 3 or 4, occasionally 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Thundery showers at first.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northwesterly, backing westerly, 3 or 4, then backing southerly or southwesterly 4 or 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 23:00 UTC on Saturday 27th Aug

  15. Mull of Kintyre to Ardnamurchan Point

    Mull of Kintyre to Ardnamurchan Point

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Northerly or northwesterly 3 or 4, occasionally 5 in south.
    • Sea State

      Slight, occasionally smooth in shelter.
    • Weather

      Occasional rain or showers at first.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      Northwesterly 3 or 4, backing southerly or southwesterly 4 or 5, occasionally 6 later in north.
    • Sea State

      Smooth or slight, becoming slight or moderate later.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate or poor later.

    Issued at 23:00 UTC on Saturday 27th Aug

  16. The Minch

    The Minch

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Variable, mainly north, backing west later, 3 or 4, occasionally 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain or showers at first.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      West or southwest, 3 or 4, backing south or southwest 5 to 7.
    • Sea State

      Smooth or slight, becoming moderate later.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate or poor later.

    Issued at 23:00 UTC on Saturday 27th Aug

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Variable, mainly north, backing west later, 3 or 4, occasionally 5 later.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Occasional rain or showers at first.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      West or southwest, 3 or 4, backing south or southwest 5 to 7.
    • Sea State

      Slight or moderate, becoming moderate later.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate or poor later.

    Issued at 23:00 UTC on Saturday 27th Aug

  18. Shetland Isles * warning

    Shetland Isles

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    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Variable, mainly east or southeast, backing northwest later, 2 or 3, increasing 4 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 23:00 UTC on Saturday 27th Aug

    For coastal areas up to 60 nautical miles from Lerwick, Shetland

    Gale Warnings in operation for Sea Area Fair Isle: Nil

    23:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Southeast 3 or 4 backing east 3 or less.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Sun 28th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      East 3 or less backing northwest 3 or 4.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Good, occasionally moderate.

    Issued at 23:00 UTC on Saturday 27th Aug

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

    • Wind

      Southwest 4 to 5 increasing 5 to 6 before dawn, veering westerly late afternoon and decreasing 4 to 5 later.
    • Sea State

      Slight to moderate, becoming moderate to rather rough by midday, locally rough.
    • Weather

      Isolated showers, dying out later. Risk of mist patches.
    • Visibility

      Moderate to good, perhaps locally poor.

    23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

    • Wind

      West to northwest 4 to 5, decreasing 3 to 4 in the morning.
    • Sea State

      Moderate, locally rather rough at first, becoming mainly slight, with a low swell.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Saturday 27th Aug

Gibraltar Point to North Foreland

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Strong wind warning

23:00 UTC Sat 27th Aug – 22:59 UTC Sun 28th Aug

  • Wind

    Cyclonic at first in north, otherwise southwesterly, veering northwesterly later, 4 or 5, increasing 6 at times.
  • Sea State

    Smooth or slight, occasionally moderate.
  • Weather

    Thundery showers.
  • Visibility

    Good, occasionally poor.

23:00 UTC Sun 28th Aug – 22:59 UTC Mon 29th Aug

  • Wind

    Northerly or northwesterly 4 or 5, becoming variable 3 or 4.
  • Sea State

    Smooth or slight.
  • Weather

    Showers.
  • Visibility

    Moderate or good.

Issued at 23:00 UTC on Saturday 27th Aug