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 should gradually clear eastwards through Sunday as a ridge of high pressure builds in from the west on Sunday night.

* 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable, becoming east or southeast, 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain at times.
    • Visibility

      Good, occasionally moderate.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Variable, mainly northeasterly, becoming westerly, 3 or 4, occasionally 5 later in north.
    • Sea State

      Smooth or slight, becoming slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  2. Rattray Head to Berwick on Tweed

    Rattray Head to Berwick on Tweed

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable 2 or 3, becoming east 3 or 4 for a time.
    • Sea State

      Smooth or slight.
    • Weather

      Rain later in south.
    • Visibility

      Good, occasionally moderate later in south.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Variable 3 or 4.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers at first.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable 3 or less, becoming southeast, then backing northeast later, 4 or 5.
    • Sea State

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

      Fair, then rain or thundery showers.
    • Visibility

      Good, becoming moderate, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      North or northeast 4 or 5, becoming variable, mainly west later, 3 or 4.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or showers, becoming fair.
    • Visibility

      Moderate or good, occasionally poor at first.

    Issued at 11:00 UTC on Saturday 27th Aug

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      East, veering southwest later, 4 or 5, occasionally 6 at first.
    • Sea State

      Smooth or slight, becoming slight or moderate.
    • Weather

      Rain or thundery showers.
    • Visibility

      Moderate or good, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwest, veering northwest, 4 or 5, then veering west 3 or 4 later.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers, perhaps thundery at first.
    • Visibility

      Good, occasionally poor at first.

    Issued at 11:00 UTC on Saturday 27th Aug

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Easterly, veering southwesterly, but becoming cyclonic for a time, 4 or 5, occasionally 6 at first.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Thundery showers.
    • Visibility

      Good, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwesterly, veering northwesterly, 4 or 5, occasionally 6 at first in south.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers, perhaps thundery at first.
    • Visibility

      Good, occasionally poor at first.

    Issued at 11:00 UTC on Saturday 27th Aug

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Easterly, becoming variable, 3 or 4, then becoming southwesterly 4 or 5, occasionally 6 later.
    • Sea State

      Smooth or slight, becoming moderate later.
    • Weather

      Showers, thundery at times.
    • Visibility

      Moderate or good, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwesterly 5 or 6, veering northwesterly 3 or 4 later.
    • Sea State

      Moderate, becoming slight later.
    • Weather

      Showers at first.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  7. Selsey Bill to Lyme Regis * warning

    Selsey Bill to Lyme Regis

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    Strong wind warning

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

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

      Smooth or slight, becoming moderate later.
    • Weather

      Showers, perhaps thunder at first.
    • Visibility

      Moderate or good, occasionally poor at first.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwest 5 or 6, veering northwest 4 or 5, then backing west 3 or 4 later.
    • Sea State

      Moderate, becoming slight later.
    • Weather

      Showers at first.
    • Visibility

      Good.

    Issued at 11:00 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

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Easterly 3 or 4, veering southwesterly, then veering northwesterly later in west, 4 or 5, increasing 6 at times.
    • Sea State

      Smooth or slight, becoming moderate, occasionally rough later in southwest.
    • Weather

      Showers, perhaps thundery at first in east.
    • Visibility

      Good, occasionally poor at first in east.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwesterly at first in east, otherwise northwesterly, 4 or 5, then backing westerly 3 or 4 later.
    • Sea State

      Moderate, occasionally rough at first in southwest, then becoming slight later.
    • Weather

      Showers at first.
    • Visibility

      Good.

    Issued at 11:00 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

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

      Smooth or slight, becoming moderate later west of porthcawl.
    • Weather

      Showers later.
    • Visibility

      Good.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

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

      Slight in inner Bristol Channel, otherwise moderate, becoming slight later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 11:00 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Northeast, becoming variable, 3 or 4 then becoming northwest 4 or 5 later.
    • Sea State

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

      Thundery showers for a time.
    • Visibility

      Good, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Northwesterly 4 or 5, becoming variable 3 or 4 except in far north.
    • Sea State

      Slight or moderate, becoming smooth or slight later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 11:00 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

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

      Smooth or slight.
    • Weather

      Thundery showers for a time.
    • Visibility

      Good, occasionally poor.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Northwest 4 or 5, backing west 3 or 4 later.
    • Sea State

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

      Fair.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  12. Isle of Man

    Isle of Man

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      East or northeast 2 or 3, increasing 4 at times, backing northwest 4 or 5 later.
    • Sea State

      Slight.
    • Weather

      Rain or showers for a time later.
    • Visibility

      Moderate or good, occasionally poor later.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Northwest 4 or 5, backing west or southwest 2 or 3.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable 3 or less, becoming north 3 or 4, then backing northwest 4 or 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Thundery showers for a time in southeast.
    • Visibility

      Good, occasionally poor in southeast.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

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

      Slight, occasionally moderate at first in southeast, then occasionally smooth later.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 11:00 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable 3 or less, becoming northerly 3 or 4, then backing northwesterly 4 or 5 later.
    • Sea State

      Smooth, occasionally slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

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

      Smooth or slight.
    • Weather

      Showers at first.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  15. Mull of Kintyre to Ardnamurchan Point

    Mull of Kintyre to Ardnamurchan Point

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

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

      Slight, occasionally smooth in shelter.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      North, backing northwest, then backing south later, 3 or 4, occasionally 5 at first.
    • Sea State

      Slight, occasionally smooth in east.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  16. The Minch

    The Minch

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable, becoming north later, 3 or 4.
    • Sea State

      Smooth, occasionally slight.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      North or northwest, backing southwest later, 3 or 4, increasing 5 at times.
    • Sea State

      Smooth or slight, occasionally moderate later in north.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 11:00 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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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable, becoming north later, 3 or 4.
    • Sea State

      Slight.
    • Weather

      Occasional rain or showers.
    • Visibility

      Moderate or good.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      North or northwest, backing southwest later, 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers later.
    • Visibility

      Good.

    Issued at 11:00 UTC on Saturday 27th Aug

  18. Shetland Isles * warning

    Shetland Isles

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    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Southwesterly, backing southeasterly, then easterly later, 3 or less, occasionally 4 at first, and later in southwest.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain.
    • Visibility

      Good, occasionally moderate later.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 11:00 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

    11:00 UTC Sat 27th Aug – 22:59 UTC Sat 27th Aug

    • Wind

      Southwesterly backing southeasterly 3 or less, occasionally 4 at first.
    • Sea State

      Slight, occasionally moderate in north.
    • Weather

      Fair.
    • Visibility

      Good.

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

    • Wind

      Southeasterly backing easterly 3 or less increasing 4 for a time in southwest.
    • Sea State

      Slight or moderate.
    • Weather

      Occasional rain soon.
    • Visibility

      Good, occasionally moderate.

    Issued at 11:00 UTC on Saturday 27th Aug

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

    • Wind

      Variable 1 to 3 becoming westerly 2 to 4 by late afternoon, backing southwest and increasing 4 to 5 around midnight, increasing 5 to 6 around dawn.
    • Sea State

      Slight increasing moderate overnight, locally rather rough in the north.
    • Weather

      Isolated thundery showers mist and a risk of fog patches by evening, clearing around dawn.
    • Visibility

      Moderate to good, perhaps locally poor or very poor overnight.

    11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

    • Wind

      Southwest 4 to 5, locally 6 at times, veering west by evening, and northwest overnight, decreasing 3 to 5 by dawn.
    • Sea State

      Moderate to rather rough, decreasing slight to moderate overnight, with a low swell.
    • Weather

      Isolated showers, clearing overnight.
    • Visibility

      Good, locally moderate to poor in showers.

    Issued at 11:00 UTC on Saturday 27th Aug

Lyme Regis to Lands End including the Isles of Scilly

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Strong wind warning

11:00 UTC Sat 27th Aug – 10:59 UTC Sun 28th Aug

  • Wind

    Easterly 3 or 4, veering southwesterly, then veering northwesterly later in west, 4 or 5, increasing 6 at times.
  • Sea State

    Smooth or slight, becoming moderate, occasionally rough later in southwest.
  • Weather

    Showers, perhaps thundery at first in east.
  • Visibility

    Good, occasionally poor at first in east.

11:00 UTC Sun 28th Aug – 10:59 UTC Mon 29th Aug

  • Wind

    Southwesterly at first in east, otherwise northwesterly, 4 or 5, then backing westerly 3 or 4 later.
  • Sea State

    Moderate, occasionally rough at first in southwest, then becoming slight later.
  • Weather

    Showers at first.
  • Visibility

    Good.

Issued at 11:00 UTC on Saturday 27th Aug