BoM St Helena Marine Weather Forecast

Winds: Northwesterly 20 to 25 knots.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore.

Swell: Southwesterly below 1 metre, increasing to 1 to 1.5 metres in the west.

Winds: North to northwesterly 20 to 30 knots turning west to southwesterly in the late afternoon.

Seas: 2 to 3 metres.

Swell: Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres around midday, then increasing to 2 to 3 metres by early evening.

Winds: South to southwesterly 20 to 30 knots tending south to southeasterly 15 to 25 knots during the morning.

Seas: 1.5 to 2.5 metres, decreasing to 1 metre by early evening.

Swell: Southwesterly 2 to 4 metres, decreasing to 2 to 3 metres during the morning.

Winds: South to southeasterly 10 to 15 knots decreasing to about 10 knots during the morning.

Seas: Below 1 metre.

Swell: Southwesterly 1.5 to 2.5 metres.

Winds: North to northwesterly 15 to 20 knots, reaching up to 25 knots in the west.

Seas: Around 1 metre, increasing to 1.5 metres offshore.

Swell: West to southwesterly below 1 metre.

Winds: Northwesterly 15 to 25 knots, reaching up to 30 knots during the afternoon and evening. Winds tending westerly 20 to 25 knots in the late evening.

Seas: 1 to 2 metres, increasing to 2 to 3 metres during the afternoon.

Swell: West to southwesterly below 1 metre inshore, increasing to around 1 metre offshore.

Winds: Westerly 20 to 30 knots decreasing to 15 to 25 knots before dawn then shifting southeasterly during the morning.

Seas: 1.5 to 2.5 metres.

Swell: West to southwesterly around 1 metre, increasing to 1 to 2 metres during the morning, then tending southeast to southwesterly 1 to 1.5 metres by early evening.

Winds: South to southeasterly 10 to 15 knots tending south to southwesterly below 10 knots during the day.

Seas: Around 1 metre.

Swell: West to southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.

Winds: Northerly 15 to 20 knots, reaching up to 30 knots in the far east.

Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres in the far east.

Swell: Southerly below 1 metre.

Winds: North to northwesterly 15 to 20 knots tending west to northwesterly during the afternoon and evening. Winds reaching up to 30 knots offshore early in the morning and again in the late evening.

Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon, then increasing to 1 to 2 metres later in the evening.

Swell: Northeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore during the morning. Southerly around 1 metre inshore, increasing to 1 to 1.5 metres offshore during the morning.

Winds: Westerly 20 to 30 knots decreasing to 15 to 25 knots before dawn then tending southeast to southwesterly in the early afternoon.

Seas: 1 to 2 metres.

Swell: South to southwesterly 1 to 1.5 metres, tending west to southwesterly 1 to 2 metres during the morning, then tending southerly 2 to 2.5 metres by early evening. Northeasterly 1 to 1.5 metres, decreasing to around 1 metre during the morning.

Winds: Southerly 15 to 20 knots.

Seas: 1 to 1.5 metres, decreasing to 1 metre during the evening.

Swell: Southerly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon or evening.

Winds: Northwesterly 20 to 25 knots, reaching up to 30 knots offshore.

Seas: 2 to 2.5 metres.

Swell: Southwesterly 1.5 metres.

Winds: North to northwesterly 20 to 30 knots shifting south to southwesterly in the late morning and early afternoon.

Seas: 2 to 3 metres.

Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 4 metres during the morning.

Winds: Southerly 20 to 30 knots decreasing to 15 to 25 knots in the early morning.

Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres around midday.

Swell: Southwesterly 4 metres, tending southerly 4 metres during the morning, then tending southwesterly 3 to 4 metres around midday.

Winds: Southerly 10 to 15 knots decreasing to below 10 knots during the day.

Seas: Below 1 metre.

Swell: Southwesterly 2.5 to 3 metres.