Our Island Plan

5 day weather forecast for Isle of Man coastal waters

Issued on Wednesday, 17 September 2025 at 6:00am 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

South or SE 5 to 7, soon veering SW 5 or 6 this morning. Decreasing SW 4 or 5 in the afternoon, then increasing 5 or 6 again in the evening.

StateOfSea

Moderate or rough, becoming moderate later this morning.

Weather

Heavy rain at first, but clearing this morning.

Visibility

Moderate or poor at first, but improving good this morning.

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

Tomorrow

Warnings

Strong winds until later.

Wind

SW 5 or 6, increasing South or SW 5 to 7 later in morning or early afternoon. Little change for the rest of the day, then gradually decreasing 4 or 5 overnight.

StateOfSea

Moderate, building moderate or rough, then gradually falling slight or moderate later.

Weather

Outbreaks of rain developing.

Visibility

Good, falling moderate or poor at times in rain.

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

Friday, 19 September 2025

Warnings

Nil.

Wind

SW 4 or 5, decreasing 3 or 4 during day, becoming Variable later.

StateOfSea

Slight or moderate, becoming slight.

Weather

Outbreaks of rain, then fair later.

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 winds later.

Wind

Variable 3 or 4, settling North or NE during day and increasing 4 or 5, then 6 or 7 overnight.

StateOfSea

Slight, building moderate or rough later.

Weather

Fair, then outbreaks of rain.

Visibility

Good, falling moderate 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

North or NE 6 or 7, decreasing 4 or 5 later.

StateOfSea

Moderate or rough, falling slight or moderate later.

Weather

Outbreaks of rain, then fair.

Visibility

Good, falling moderate in rain.

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

Forecast by

Colin Gartshore
Back to top