Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

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

Summary

A slow-moving low centred just northwest of Iberia will bring a warm, humid airflow across southern parts of the British Isles through today. However, pressure will build from the west with cooler, fresher conditions moving down from the north as the weekend goes on.

* 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

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Westerly or northwesterly 4 or 5, occasionally 3 in west, increasing 6 at times in north and east.
    • Sea State

      Slight, becoming moderate except in inner Moray Firth.
    • Weather

      Showers, becoming fair later.
    • Visibility

      Good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northwesterly 3 or 4, occasionally 5 at first in east, becoming variable 2, then southerly 3 or 4 later in north.
    • Sea State

      Slight or moderate , becoming slight in south.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 near Rattray Head, but mainly variable 3 or 4 in south.
    • Sea State

      Slight, becoming moderate near Rattray Head.
    • Weather

      Showers.
    • Visibility

      Good, occasionally poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      North or northwest 4 or 5, occasionally 6 at first near Rattray Head, becoming variable 3 or less.
    • Sea State

      Slight or moderate, becoming slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  3. Berwick on Tweed to Whitby

    Berwick on Tweed to Whitby

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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

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

      Slight becoming moderate.
    • Weather

      Showers.
    • Visibility

      Moderate or poor becoming good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      North or northwest 4 or 5, occasionally 6 at first, then becoming variable 3 or less.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

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

      Slight becoming moderate.
    • Weather

      Showers, thundery at first, fog patches at first.
    • Visibility

      Moderate or good, occasionally very poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      North or northwest 5 or 6 decreasing 3 or 4.
    • Sea State

      Moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Variable 2 or 3 becoming northerly or northwesterly 4 or 5, occasionally 6 later.
    • Sea State

      Slight becoming moderate.
    • Weather

      Thundery showers, fog patches at first.
    • Visibility

      Moderate or good, occasionally very poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northerly 5 or 6, backing northwesterly 4 or 5 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  6. North Foreland to Selsey Bill * warning

    North Foreland to Selsey Bill

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northeasterly 3 or 4, occasionally variable 2 at first, backing northerly 4 or 5 later, occasionally 6 later in east.
    • Sea State

      Slight, becoming moderate later in east.
    • Weather

      Thundery showers, fog patches at first.
    • Visibility

      Moderate or poor, occasionally very poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northerly or northeasterly 4 or 5, occasionally 6 at first in east, decreasing 3 later in west.
    • Sea State

      Slight, occasionally moderate in east.
    • Weather

      Showers then fair.
    • Visibility

      Moderate becoming good.

    Issued at 05:00 UTC on Saturday 20th Sep

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      North or northeast 3 or 4, occasionally variable 2 at first, then increasing 5 at times later.
    • Sea State

      Slight, occasionally smooth at first.
    • Weather

      Thundery showers.
    • Visibility

      Moderate or poor.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northeast 4 or 5, decreasing 3.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Moderate becoming good.

    Issued at 05:00 UTC on Saturday 20th Sep

  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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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      North or northeast 3 or 4, occasionally variable 2 at first, then increasing 5 at times later.
    • Sea State

      Slight, becoming moderate in far west.
    • Weather

      Thundery showers, fog patches at first.
    • Visibility

      Moderate or poor, occasionally very poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      East or northeast 3 or 4, occasionally 5 at first.
    • Sea State

      Slight or moderate.
    • Weather

      Showers then fair.
    • Visibility

      Moderate or poor becoming good.

    Issued at 05:00 UTC on Saturday 20th Sep

  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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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Variable 3 or less at first in Bristol Channel, otherwise north or northeast 3 or 4, increasing 5 at times.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers, fog patches at first near Cornwall.
    • Visibility

      Moderate or poor, occasionally very poor at first near Cornwall.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      East or northeast 3 or 4, occasionally 5 at first, becoming variable 2 at times later.
    • Sea State

      Slight, occasionally moderate at first.
    • Weather

      Fair.
    • Visibility

      Moderate or poor becoming good.

    Issued at 05:00 UTC on Saturday 20th Sep

  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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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      North or northeast 3 or 4, increasing 5 at times.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Moderate or good, occasionally poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northeast 3 or 4 becoming variable 3 or less.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  11. Great Ormes Head to the Mull of Galloway

    Great Ormes Head to the Mull of Galloway

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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northwesterly 4 or 5 at first in northwest, otherwise northerly veering easterly or northeasterly, 3 or 4.
    • Sea State

      Smooth or slight, becoming moderate for a time near the Mull of Galloway.
    • Weather

      Showers, becoming fair later.
    • Visibility

      Moderate or good, occasionally poor at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      East or northeast becoming variable, 3 or less, occasionally 4 at first.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 in west, veering northeasterly 2 or 3 later.
    • Sea State

      Slight or moderate, becoming slight later.
    • Weather

      Mainly fair.
    • Visibility

      Moderate or good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northeast 2 or 3, occasionally 4 at first, becoming variable 3 or less.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northerly or northwesterly 4 or 5, occasionally 6 at first in North Channel, decreasing 3 later.
    • Sea State

      Slight or moderate, becoming slight later.
    • Weather

      Mainly fair.
    • Visibility

      Good, occasionally moderate at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Variable mainly north 3 or less, occasionally 4 at first, becoming southwest 3 or 4 later.
    • Sea State

      Slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  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

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northwesterly 4 or 5, occasionally 6 at first in North Channel, becoming variable 3 or less later.
    • Sea State

      Slight or moderate, becoming slight later.
    • Weather

      Showers then fair.
    • Visibility

      Good, occasionally moderate at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Variable, becoming south or southwest later, 3 or less, increasing 4 at times.
    • Sea State

      Smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      North 4 or 5, occasionally 6 at first near headlands, becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

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

      Slight, occasionally moderate near Islay and Tiree.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  16. The Minch

    The Minch

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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

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

      Slight, becoming slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

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

      Slight, occasionally moderate in far north.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  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

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northwesterly 4 or 5, occasionally 6 at first in far north, then becoming variable 3 or less later.
    • Sea State

      Slight or moderate.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Variable 3 or less, becoming southerly or southwesterly 3 or 4 later, occasionally 5 later in west.
    • Sea State

      Slight or moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      West 4 or 5 veering northwest 5 or 6.
    • Sea State

      Slight becoming moderate, occasionally rough later in far north.
    • Weather

      Showers then fair.
    • Visibility

      Good, occasionally moderate at first.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 05:00 UTC on Saturday 20th Sep

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

    Gale Warnings in operation for Sea Area Fair Isle: Nil

    05:00 UTC Sat 20th Sep – 16:59 UTC Sat 20th Sep

    • Wind

      Westerly 4 or 5, veering northwesterly 5 or 6.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Moderate or good.

    17:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Northwesterly 5 or 6, occasionally 7 in northeast, occasionally 4 in southwest later.
    • Sea State

      Moderate, occasionally slight in shelter to east of Shetland, occasionally rough later in northeast.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

  19. The Channel Islands

    The Channel Islands

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    05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

    • Wind

      Variable becoming northerly 2 to 4, veering northeasterly overnight, increasing 4 or 5 by morning.
    • Sea State

      Slight, locally moderate in the north and west of the area by morning.
    • Weather

      Isolated showers, some mist or fog patches, clearing this evening.
    • Visibility

      Good, locally moderate to very poor.

    05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

    • Wind

      Northeast 4 or 5, decreasing 3 or 4 overnight.
    • Sea State

      Slight or moderate.
    • Weather

      Isolated showers at first.
    • Visibility

      Good.

    Issued at 05:00 UTC on Saturday 20th Sep

From Cape Wrath to Rattray Head including Orkney

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Strong wind warning

05:00 UTC Sat 20th Sep – 04:59 UTC Sun 21st Sep

  • Wind

    Westerly or northwesterly 4 or 5, occasionally 3 in west, increasing 6 at times in north and east.
  • Sea State

    Slight, becoming moderate except in inner Moray Firth.
  • Weather

    Showers, becoming fair later.
  • Visibility

    Good.

05:00 UTC Sun 21st Sep – 04:59 UTC Mon 22nd Sep

  • Wind

    Northwesterly 3 or 4, occasionally 5 at first in east, becoming variable 2, then southerly 3 or 4 later in north.
  • Sea State

    Slight or moderate , becoming slight in south.
  • Weather

    Fair.
  • Visibility

    Good.

Issued at 05:00 UTC on Saturday 20th Sep