Our Island Plan

5 day weather forecast for Isle of Man coastal waters

Issued on Monday, 15 December 2025 at 5:30am by Ronaldsway Met Office

Forecast periods cover 24 hours from 6am each day to 6am on following day. Wind speeds are on Beaufort Scale.

Today

Warnings

Nil.

Wind

W or NW 3 or 4, imminently becoming variable 3 or less, then NW 3 or 4 later.

StateOfSea

Slight or moderate, imminently falling slight.

Weather

Mainly fair.

Visibility

Good.

Temperature
Min. air temperature 8°C and max. air temperature 10°C
Sea temperature
11°C

Tomorrow

Warnings

Strong to gale force winds developing overnight.

Wind

NW or W 3 or 4, backing SW in the evening, then increasing S or SW 6 to gale 8 overnight.

StateOfSea

Slight becoming moderate or rough overnight.

Weather

Fair, then rain arriving overnight.

Visibility

Good, becoming moderate or poor overnight.

Temperature
Min. air temperature 5°C and max. air temperature 9°C
Sea temperature
11°C

Wednesday, 17 December 2025

Warnings

Strong to gale force winds.

Wind

S-SW 7 or gale 8, decreasing SW 4 or 5 later in the day.

StateOfSea

Rough or very rough, becoming slight or moderate later.

Weather

Rain, becoming mainly fair later.

Visibility

Moderate or good, occasionally poor, becoming good later.

Temperature
Min. air temperature 9°C and max. air temperature 11°C
Sea temperature
11°C

Thursday, 18 December 2025

Warnings

Strong winds developing.

Wind

SW 4 or 5, backing S in the afternoon, veering W or SW in the evening, increasing overnight SW 5 or 6 occasional 7.

StateOfSea

Slight or moderate becoming moderate or rough later.

Weather

Outbreaks of rain, becoming mainly fair later.

Visibility

Good, falling moderate at times.

Temperature
Min. air temperature 7°C and max. air temperature 11°C
Sea temperature
11°C

Friday, 19 December 2025

Warnings

Strong wind.

Wind

SW 5 or 6 occasional 7, backing at night to S-SW 6 or 7, then 7 to gale 8 by the end of the night.

StateOfSea

Moderate or rough.

Weather

Mainly fair, then rain overnight.

Visibility

Good, becoming moderate or poor overnight.

Temperature
Min. air temperature 9°C and max. air temperature 11°C
Sea temperature
11°C

Forecast by

Adrian Cowin
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