Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

A ridge of high pressure in northeastern areas will clear away into the North Sea as a warm front spreads slowly from the southwest, bringing very humid conditions.

* 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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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

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

      Slight or moderate, occasionally smooth in east.
    • Weather

      Fair.
    • Visibility

      Good.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      East or southeast 4 or 5, increasing 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good.

    Issued at 00:00 UTC on Monday 21st Aug

  2. Rattray Head to Berwick on Tweed

    Rattray Head to Berwick on Tweed

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Variable 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      East or southeast 3 or 4, but mainly 5 near Rattray Head.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or drizzle at times, fog banks developing.
    • Visibility

      Moderate or good, becoming poor or very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Variable 3 or less, increasing 4 at times.
    • Sea State

      Slight.
    • Weather

      Rain later.
    • Visibility

      Good, becoming moderate later.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or less, increasing 4 at times.
    • Sea State

      Slight, occasionally moderate later.
    • Weather

      Rain or drizzle at times, fog banks developing.
    • Visibility

      Moderate or poor, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  4. Whitby to Gibraltar Point

    Whitby to Gibraltar Point

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Variable 3 or less, becoming south or southeast 4 or 5 for a time later.
    • Sea State

      Slight, occasionally smooth until later.
    • Weather

      Occasional rain later.
    • Visibility

      Good, occasionally moderate later.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or 4.
    • Sea State

      Slight.
    • Weather

      Rain or drizzle at times, fog patches developing.
    • Visibility

      Moderate or poor, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  5. Gibraltar Point to North Foreland

    Gibraltar Point to North Foreland

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Variable 3 or 4, becoming southeasterly 5 for a time later in northeast.
    • Sea State

      Smooth or slight.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or 4.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 00:00 UTC on Monday 21st Aug

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Southerly or southeasterly, veering westerly or southwesterly, 4 or 5, occasionally 3 at first in east, becoming variable 3 or less.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times.
    • Visibility

      Moderate or good, occasionally poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or less, becoming easterly 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 00:00 UTC on Monday 21st Aug

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

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

      Slight or moderate, becoming smooth near shore.
    • Weather

      Rain or drizzle at times, fog patches.
    • Visibility

      Moderate or poor, occasionally very poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

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

      Smooth or slight.
    • Weather

      Fog patches.
    • Visibility

      Moderate or poor, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st 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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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Westerly or southwesterly 4, becoming variable 3 or less, occasionally 4 later.
    • Sea State

      Slight or moderate, becoming smooth in shelter.
    • Weather

      Drizzle at times, fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or 4, becoming easterly or southeasterly 4 or 5, occasionally 6 at first in west, veering westerly 4 later.
    • Sea State

      Smooth at first in shelter, otherwise slight or moderate.
    • Weather

      Drizzle at times, fog banks.
    • Visibility

      Moderate or poor, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st 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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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

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

      Slight or moderate.
    • Weather

      Rain or drizzle at times, fog banks.
    • Visibility

      Moderate or poor, occasionally very poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or less, becoming south or southeast 4 or 5, occasionally 6 later, then veering west or southwest 4 later except in the Bristol Channel.
    • Sea State

      Slight or moderate.
    • Weather

      Rain at times, fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st 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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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

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

      Slight, occasionally smooth.
    • Weather

      Rain or drizzle at times, fog banks.
    • Visibility

      Moderate or poor, occasionally very poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Variable 3 or 4, becoming south or southwest 4 or 5.
    • Sea State

      Smooth or slight, occasionally moderate later in Saint Georges Channel.
    • Weather

      Fog patches at first.
    • Visibility

      Moderate or good, occasionally very poor at first.

    Issued at 00:00 UTC on Monday 21st Aug

  11. Great Ormes Head to the Mull of Galloway

    Great Ormes Head to the Mull of Galloway

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Variable 3 or 4, becoming south or southeast 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times, fog patches developing later.
    • Visibility

      Moderate or good, occasionally very poor later.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      South or southwest, becoming variable 3 or 4, then becoming southeast 4 or 5 later.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times, fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  12. Isle of Man

    Isle of Man

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      East or southeast 3 or 4, occasionally 5 at first, veering south 4 or 5 later.
    • Sea State

      Smooth or slight, occasionally moderate later.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      South 4, occasionally 5 at first, backing southeast 3 or 4.
    • Sea State

      Slight, occasionally moderate at first.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good, occasionally poor.

    Issued at 00:00 UTC on Monday 21st Aug

  13. Lough Foyle to Carlingford Lough

    Lough Foyle to Carlingford Lough

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Southerly or southeasterly 3 or 4, increasing 5 at times in northeast.
    • Sea State

      Slight, occasionally smooth.
    • Weather

      Rain or drizzle at times, fog patches developing.
    • Visibility

      Good, becoming moderate or poor, occasionally very poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Southerly or southeasterly 3 or 4, increasing 5 or 6 later.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times, fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st 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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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Easterly or southeasterly 3 or 4, occasionally 5 in the North Channel.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times, fog patches developing later.
    • Visibility

      Good, becoming moderate or poor, occasionally very poor later.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Easterly or southeasterly, occasionally easterly in the Firth of Clyde, 3 or 4, increasing 5 or 6 later.
    • Sea State

      Smooth or slight.
    • Weather

      Rain or drizzle at times, fog patches.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      East or southeast 3 or 4, increasing 5 or 6 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Rain at times.
    • Visibility

      Good, becoming moderate or poor.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      East or southeast 4 or 5, occasionally 3 at first, increasing 6 at times later.
    • Sea State

      Slight or moderate.
    • Weather

      Rain or drizzle at times, fog patches developing.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  16. The Minch

    The Minch

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Easterly or northeasterly, veering southeasterly in south, 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate, occasionally smooth.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      East or southeast 4 or 5, decreasing 3 at times.
    • Sea State

      Slight or moderate, occasionally smooth.
    • Weather

      Rain or drizzle at times, fog banks developing later.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Easterly or northeasterly, veering southeasterly in south, 3 or 4, increasing 5 at times.
    • Sea State

      Moderate, occasionally slight.
    • Weather

      Rain at times.
    • Visibility

      Moderate or good.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      Easterly or southeasterly 4 or 5, occasionally 6 at first in far north, decreasing 3 at times later.
    • Sea State

      Moderate, occasionally slight.
    • Weather

      Rain or drizzle at times, fog banks developing later.
    • Visibility

      Moderate or good, occasionally very poor.

    Issued at 00:00 UTC on Monday 21st Aug

  18. Shetland Isles * warning

    Shetland Isles

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Northwest 4 or 5, becoming variable 3 or less.
    • Sea State

      Moderate, occasionally slight.
    • Weather

      Showers at first.
    • Visibility

      Good.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 00:00 UTC on Monday 21st Aug

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil.

    00:00 UTC Mon 21st Aug – 11:59 UTC Mon 21st Aug

    • Wind

      Westerly or northwesterly 3 or 4, occasionally 5 at first in east.
    • Sea State

      Slight in shelter, otherwise moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    12:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Northwesterly 4 until later in far northeast, otherwise variable 3 or less.
    • Sea State

      Moderate, occasionally slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Monday 21st Aug

  19. The Channel Islands

    The Channel Islands

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    00:00 UTC Mon 21st Aug – 23:59 UTC Mon 21st Aug

    • Wind

      Westerly 4 to 5, decreasing 3 to 4 by dawn, becoming variable 1 to 3 around noon, then easterly mainly 2 to 4 in the evening.
    • Sea State

      Slight to moderate becoming smooth or slight in the afternoon, with a low swell.
    • Weather

      Occasional rain and drizzle with mist and a risk of fog patches, mostly clearing through the afternoon.
    • Visibility

      Moderate to poor, perhaps locally very poor, becoming mainly good in the afternoon.

    00:00 UTC Tue 22nd Aug – 23:59 UTC Tue 22nd Aug

    • Wind

      East to southeast 3 to 4, occasionally 5 by noon, increasing 4 to 5 in the afternoon, veering southwest to west in the evening.
    • Sea State

      Smooth or slight becoming slight to moderate from late afternoon, with a low swell.
    • Weather

      Risk of mist or fog patches in the morning.
    • Visibility

      Good, perhaps locally moderate to very poor at first.

    Issued at 00:00 UTC on Monday 21st Aug