Guernsey Weather Fox

Seven day Guernsey weather forecast for 27 August 2026

Friday

Weather

Well it was only a brief splash for Guernsey on Thursday evening, with the real drenching going to all the other Islands, especially Jersey. And now it looks as though Friday will be mostly dry, bright and breezy, with only the slight chance of a shower or two in the evening. This means the Island is still super dry and not quite ready for the return barbecues and bonfires yet. And besides, it’s not really looking like that kind of a bank holiday weekend to be honest. Max temps on the low side and winds always a bit fresh and perky. On Friday, it’s a moderate force 4 WSW’ly, just ticking force 5 in the evening. Temps hovering between 20 and 22°C through the afternoon, then gradually falling to a minimum of 17°C overnight.

Surf and the Water

The surf will be messy, but at least it will be getting bigger as the day progresses… 1-2 feet at dawn, 3-4 feet by dusk. Swimming conditions will be best in the east. Tides high around 7:40am and 8pm (8.7m and 9m respectively). Low tide will be around 2pm.

Saturday

Weather

A day of two halves… no rush to get up in the morning, with a fresh force 5 SSW’ly wind bringing some fairly heavy rain. A pretty sunny afternoon though, although the wind will still be on the strong side, almost reaching force 6 as it veers to a WSW’ly direction. Temperatures down a degree on Friday, peaking at just 20-21°C, before falling to an overnight minimum of 17°C again.

Surf and the Water

The surf will be 2-3 feet and pretty clean in the morning, then about 5 feet and messy in the afternoon. Great windsurfing and kitesurfing conditions too. Swimming conditions will be best around Richmond and Pembroke early morning, then around Havelet and Fermain towards dusk. Tides high around 8:15am and 8:30pm (8.9m and 9.2m respectively). Low tide will be around 2:30pm.

Sunday

Weather

A straight SW’ly wind all day. Generally moderate force 4, but probably tickling fresh force 5 at times. Weather-wise it’s long spells of sunshine, only punctuated by the fewest and briefest of showers. Not enough to spoil your day, just enough to keep you on your toes. However, if you’re desperate to sunbathe on this weekend that is usually hoped to be the climax of the season, then you should manage to find a comfortable spot at Fermain Bay, or nice and close to the sea wall at Pembroke. Temperatures peaking at 21-22°C, then falling to yet another 17°C minimum.

Surf and the Water

Semi-clean 3-4 foot surf. Decent swimming conditions around Havelet, Fermain, Pembroke and Richmond, especially around high tide. High water will be at 8:50am and at 9pm (9.1m and 9.3m respectively). Low tide will be around 3pm.

BH Monday

Weather

The max temperature will only drop by a degree on Thursday (making it around 22°C) due to the SSW’ly breeze only being light force 2-3. On Friday, however, when it changes to a force 4-5 WSW’ly, we will be lucky to climb any higher than 20-21°C. Both days will have a mix of showers and sunny intervals, and it currently looks as though the night that joins these two days will see a more prolonged spell of rain, yielding as much as 10-20mm (so best not to leave any washing on the line that night).

Surf and the Water

Messy 4-6 foot surf. Decent windsurfing and kitesurfing conditions too, although not quite as great as on Saturday. Fermain, Havelet and Pembroke will be best for swimming. High water will be around 9:20am and 9:40m (9.1m and 9.2m respectively). Low water will be around 3:40pm.

Tuesday and Wednesday

Weather

Much lighter SW’ly winds (just force 3), will make the partial sunshine feel much more pleasant, even though the temperature will still only peak around 21-22°C each day. The nights and early mornings might be a bit cooler though, with minimum temperatures of around 15°C. Probably dry throughout.

Surf and the Water

The surf should be 3-4 feet on Tuesday, shrinking 2-3 feet on Wednesday. All of it a little bit wobbly but reasonably clean. Better swimming conditions than over the weekend, but still best of all in the sheltered east. High tides will be mid-morning (8.9m on Tuesday and 8.6m on Wednesday). Low tides will be in the mid-afternoons.

The next forecast update will be on Sunday…

Previous Weather Fox Forecasts

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