Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

Conditions will remain changeable during the next couple of days. A slack pressure pattern will continue across southern areas during Friday but a brisk southwesterly airflow will develop across central and northern parts.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney * warning

    From Cape Wrath to Rattray Head including Orkney

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Southeast veering southwest 4 or 5, increasing 6 at times.
    • Sea State

      Smooth or slight in Moray Firth, otherwise slight occasionally moderate.
    • Weather

      Rain or thundery showers.
    • Visibility

      Good, occasionally poor.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      West or southwest 4 or 5 becoming variable 3 or less, occasionally 4 later.
    • Sea State

      Slight or moderate at first in north, otherwise smooth or slight.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or less becoming southwest 4 or 5, increasing 6 at times.
    • Sea State

      Smooth or slight becoming slight occasionally moderate.
    • Weather

      Rain or showers with fog patches, then fair.
    • Visibility

      Moderate or good, occasionally very poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Southwest 4 or 5 becoming variable 3 or 4, occasionally 2 later.
    • Sea State

      Slight, becoming smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or less becoming southwest 4 or 5.
    • Sea State

      Smooth or slight, becoming slight.
    • Weather

      Rain with fog patches then fair.
    • Visibility

      Moderate or poor, occasionally very poor, becoming good.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Southwest backing southeast 3 or 4, decreasing 2 for a time, then occasionally 5 later.
    • Sea State

      Slight, occasionally smooth.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4, becoming west or southwest 4 or 5 for a time.
    • Sea State

      Slight, occasionally smooth.
    • Weather

      Rain or thundery showers with fog patches, then fair.
    • Visibility

      Moderate or poor, occasionally very poor at first, becoming good.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Variable 3 or less becoming east or southeast 3 or 4, occasionally 5 later.
    • Sea State

      Smooth or slight, becoming slight.
    • Weather

      Rain or thundery showers later.
    • Visibility

      Good, occasionally poor later.

    Issued at 23:00 UTC on Thursday 25th Aug

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or less becoming westerly or northwesterly 3 or 4, then veering easterly later.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or thundery showers then fair.
    • Visibility

      Moderate or poor, becoming good.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Easterly or southeasterly 3 or 4 backing easterly or northeasterly 4 or 5, occasionally 6 later in south.
    • Sea State

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

      Rain or thundery showers later.
    • Visibility

      Good, occasionally poor later.

    Issued at 23:00 UTC on Thursday 25th Aug

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or thundery showers for a time at first.
    • Visibility

      Moderate or good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Variable 3 or 4 becoming northeasterly 4 or 5, occasionally 6 in east.
    • Sea State

      Smooth or slight becoming slight or moderate.
    • Weather

      Thundery showers later.
    • Visibility

      Good, occasionally moderate later.

    Issued at 23:00 UTC on Thursday 25th Aug

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Northwest backing southwest, then veering north later, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or thundery showers then fair.
    • Visibility

      Moderate or poor, becoming good.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Northerly 3 or 4 veering easterly 4 or 5, then decreasing 3 later in west.
    • Sea State

      Smooth or slight becoming slight occasionally moderate.
    • Weather

      Fair then rain or thundery showers.
    • Visibility

      Moderate or good, occasionally poor later.

    Issued at 23:00 UTC on Thursday 25th Aug

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

    Lyme Regis to Lands End including the Isles of Scilly

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Northwest backing southwest 3 or 4, occasionally 5 at first, then becoming variable mainly northeast later.
    • Sea State

      Smooth or slight, occasionally moderate at first in west.
    • Weather

      Rain or thundery showers at first in east, otherwise fair.
    • Visibility

      Good, occasionally poor at first in east.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      East or northeast 3 or 4, occasionally 5 at first, then becoming variable mainly southwest later.
    • Sea State

      Slight, occasionally smooth later.
    • Weather

      Fair then rain or thundery showers.
    • Visibility

      Moderate or good, occasionally poor later.

    Issued at 23:00 UTC on Thursday 25th 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 Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      West or northwest 3 or 4, occasionally 5 at first in Bristol Channel, becoming variable 3 or less later.
    • Sea State

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

      Rain or thundery showers at first in east, otherwise fair.
    • Visibility

      Good, occasionally poor at first in east.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Variable 2 becoming easterly or northeasterly 3 or 4, occasionally 5 in north, becoming variable 2 again later in south.
    • Sea State

      Slight.
    • Weather

      Fair then rain or thundery showers.
    • Visibility

      Good, occasionally poor later.

    Issued at 23:00 UTC on Thursday 25th 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 Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      South 3 or 4 becoming variable 3 or less, then becoming east or northeast 3 or 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  11. Great Ormes Head to the Mull of Galloway * warning

    Great Ormes Head to the Mull of Galloway

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Southwest 3 or 4, increasing 5 or 6 for a time.
    • Sea State

      Smooth or slight becoming slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally moderate at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Southwest becoming variable, then becoming east or southeast later, 3 or 4, decreasing 2 for a time.
    • Sea State

      Slight, becoming smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  12. Isle of Man

    Isle of Man

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      South or southwest 3 or 4, increasing 5 for a time.
    • Sea State

      Smooth or slight becoming slight occasionally moderate.
    • Weather

      Fair.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      South or southwest becoming variable, then becoming mainly east later, 3 or less, increasing 4 at times.
    • Sea State

      Slight, becoming smooth or slight.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Thursday 25th Aug

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or less, becoming southwest 4 or 5 for a time.
    • Sea State

      Smooth or slight, becoming slight occasionally moderate for a time.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Variable 3 or less, occasionally 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

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

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

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      South 3 or 4 veering southwest 4 or 5, increasing 6 at times, then becoming variable 3 or less later.
    • Sea State

      Smooth or slight, becoming slight or moderate for a time.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Variable 3 or less, occasionally 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4 becoming southwest 5 or 6, then decreasing 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Southwest backing south, then backing northeast later, 3 or 4, decreasing 2 for a time.
    • Sea State

      Slight or moderate becoming smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  16. The Minch * warning

    The Minch

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4 becoming southwest 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate, occasionally smooth in north.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      South or southwest 3 or 4, occasionally 5 at first, becoming variable 3 or less later.
    • Sea State

      Slight or moderate at first in south, otherwise smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides * warning

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    Strong wind warning

    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4 becoming southwest 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or thundery showers, becoming fair later.
    • Visibility

      Good, occasionally poor at first.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      South or southwest 3 or 4, occasionally 5 at first, becoming variable 3 or less later.
    • Sea State

      Slight or moderate, becoming slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 23:00 UTC on Thursday 25th Aug

  18. Shetland Isles * warning

    Shetland Isles

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      East or northeast becoming variable, 3 or 4, then becoming southwest 4 or 5 later.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Rain or showers.
    • Visibility

      Moderate or good, occasionally poor.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 23:00 UTC on Thursday 25th 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 Thu 25th Aug – 10:59 UTC Fri 26th Aug

    • Wind

      East backing northeast 3 or 4, becoming variable later.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally poor later.

    11:00 UTC Fri 26th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      Variable 3 or 4, becoming cyclonic then west or southwest 4 or 5.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good.

    Issued at 23:00 UTC on Thursday 25th Aug

  19. The Channel Islands

    The Channel Islands

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    23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

    • Wind

      North or northwest 3 to 5.
    • Sea State

      Slight, locally moderate in the south.
    • Weather

      Scattered thundery showers, mainly in the west, mist and a risk of fog patches.
    • Visibility

      Moderate or good, locally poor perhaps very poor.

    23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Northerly or northeasterly 3 or 4, becoming easterly or variable 2 to 4 by midday, then westerly in the evening.
    • Sea State

      Slight, locally moderate.
    • Weather

      Risk of thundery showers, some mist patches.
    • Visibility

      Moderate or good, locally poor.

    Issued at 23:00 UTC on Thursday 25th Aug

North Foreland to Selsey Bill

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23:00 UTC Thu 25th Aug – 22:59 UTC Fri 26th Aug

  • Wind

    Variable 3 or 4.
  • Sea State

    Smooth or slight.
  • Weather

    Rain or thundery showers for a time at first.
  • Visibility

    Moderate or good, occasionally poor at first.

23:00 UTC Fri 26th Aug – 22:59 UTC Sat 27th Aug

  • Wind

    Variable 3 or 4 becoming northeasterly 4 or 5, occasionally 6 in east.
  • Sea State

    Smooth or slight becoming slight or moderate.
  • Weather

    Thundery showers later.
  • Visibility

    Good, occasionally moderate later.

Issued at 23:00 UTC on Thursday 25th Aug