Guernsey Weather Fox

Seven day Guernsey weather forecast for 04 January 2025

Sunday

Weather

An average mild winter’s day, with a fresh force 5 SSW’ly breeze maintaining a temperature of 11-12°C under cloudy skies, with occasional drizzly showers and mist patches. Southeastern areas like Town and Fermain will be most comfortably sheltered, closely followed by Pleinmont in the west. Overnight (after midnight), the showers will merge into heavy rain, as a cold front veers the wind to a NW’ly direction and causes the temperature to plummet to around 6°C.

Surf and the Water

The surf will be 4-5 feet and clean. Windsurfing and kitesurfing conditions will also be great. High tide will be 8.6m at 9:20am, then low tide will be at 3:45pm.

Monday and Tuesday

Weather

Dawn and dusk on Monday will probably be cloudy and rainy, but the majority of daylight hours should be partially sunny with only the most isolated of showers. Tuesday should also be a story of sunshine and showers, but on that occasion the sunshine will probably be brighter and more plentiful and the wind story will also be an improving one. For Monday, we can expect a force 5 and gusty NW’ly. Then, through Tuesday, this should gradually relax to a light force 2-3 W’ly. The max temperature will be about 7-8°C on both days, and the min temperature somewhere between 3 and 5°C.

Surf and the Water

The surf will be about 6 feet and very choppy on Monday, although there might (at a stretch) be some clean and rideable novelty nuggets on the south coast. On Tuesday, the onshore wind will ease so the waves will gradually become a little cleaner, but they will halve in size as they do so. Monday will certainly be the best day for windsurfers and kite-surfers, then Tuesday the better day for winter swimmers. Tides will be high in the late mornings (8.5m and 8.1m respectively). Low tides will be soon after dusk.

Wednesday to Friday

Weather

Hmmm… Wednesday, now this is tricky one. A very wet and windy low pressure system is going to sweep from west to east. Nothing unusual about that. Except in this case, it’s not going to be unloading its worst weather on Northern Britain, but either on Southern England or Northern France. What this means is not only that we are going to bear the brunt of it, but we might also be on the cold (northern) side of the system, which means that the copious rain might actually turn out to be snow. It’s only a very low probability at the moment but it certainly isn’t zero. Aside from that, the wind will be very strong or perhaps even gale force… probably E’ly but possibly NE’ly or SE’ly, so there is no doubt that it’s going to be unpleasant in one way or another, especially on the eastern side of the Island. Thursday then looks much calmer, drier and sunnier, albeit with a rather cold N’ly airflow. Friday then starting off like Thursday, but gradually clouding over, ahead of what will probably be a wet and windy night. Max temps, for these three days, are likely to be 7, 9 and 10°C respectively. Min temps, for the three nights, are likely to be about 4, 4 and 7°C respectively.

Surf and the Water

The surf will be cleanish on Wednesday, but the offshore wind might prove too strong to manage. Thursday’s cross winds will certainly make a mess of any waves, but it looks as though Friday might be the perfect combo of large waves and moderate offshore breezes. Low tides will be around breakfast time. High tides will be roughly 7.8m around 1pm Wednesday, 7.5m at 2:10pm Thursday and 7.7m around 3:30pm Friday.

The next forecast update will on Tuesday evening…

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