Our Island Plan

5 day weather forecast for Isle of Man coastal waters

Issued on Thursday, 18 September 2025 at 5:15am 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

Strong winds.

Wind

SW 4 or 5 occasionally 6 at first, soon backing S or SW 3 or 4, increasing 5 or 6 later in the afternoon and occasionally reaching 7 in the evening, decreasing 4 or 5 overnight.

StateOfSea

Moderate, soon falling slight, building moderate or rough in the evening, becoming mainly moderate overnight.

Weather

Mainly fair at first, rain or drizzle soon arriving.

Visibility

Good, becoming moderate or poor in rain or drizzle.

Temperature
Min. air temperature 14°C and max. air temperature 17°C
Sea temperature
15°C

Tomorrow

Warnings

Nil.

Wind

S or SW 4 or 5, quickly decreasing 3 or 4, veering W or SW in the evening, then W or NW 2 or 3 overnight.

StateOfSea

Moderate, soon falling slight.

Weather

Outbreaks of rain.

Visibility

Good, falling moderate or poor at times in rain.

Temperature
Min. air temperature 14°C and max. air temperature 16°C
Sea temperature
15°C

Saturday, 20 September 2025

Warnings

Strong to gale force winds developing, risk of severe gales.

Wind

W or NW 2 or 3, soon veering N or NE 5 or 6, backing N or NW 7 or gale 8, possibly reaching severe gale 9 in places in the evening, decreasing 5 or 6 overnight.

StateOfSea

Slight, building moderate, then rough or very rough for a time in the evening, falling moderate overnight.

Weather

Rain, heavy at times.

Visibility

Good, falling moderate or poor in rain.

Temperature
Min. air temperature 11°C and max. air temperature 15°C
Sea temperature
15°C

Sunday, 21 September 2025

Warnings

Strong winds until later.

Wind

N or NW 5 or 6, veering N or NE 4 or 5 later.

StateOfSea

Moderate, falling slight occasionally moderate later.

Weather

Showery outbreaks of rain, becoming fair later.

Visibility

Good, falling moderate in rain.

Temperature
Min. air temperature 10°C and max. air temperature 13°C
Sea temperature
15°C

Monday, 22 September 2025

Warnings

Nil.

Wind

N or NE 4 or 5, decreasing 3 or 4.

StateOfSea

Slight occasionally moderate at first.

Weather

Fair.

Visibility

Good.

Temperature
Min. air temperature 10°C and max. air temperature 13°C
Sea temperature
15°C

Forecast by

George Shimmin
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