Guernsey Weather Fox

Seven day Guernsey weather forecast for 20 March 2026

Saturday

Weather

Super-sunny again (don’t forget to appreciate it though). The temperature will once again be inhibited by the force 3-4 NE’ly breeze, so the way to feel warmest will be to head to the south-coast beaches and cliff-paths. The timing of low tide couldn’t be more perfect for making the most of lunchtime and the afternoon. Temperatures will peak at 12-13°C by day, and then fall to about 6°C by night.

Surf and the Water

The surf will finally reduce to 1 foot dribble, just in time for those who couldn’t manage a mid-week sniff of it. Swimming conditions will be good on the south coast though (as well as one or two west-coast nooks). High tides will be at 8am and 8:20pm (9.7m and 9.5m respectively). Low tide will be at 2:20pm.

Sunday

Weather

Just a little nudge of the breeze to a NNE’ly direction, will bring inherently cooler air. However, with a reduction in the strength of this breeze, to just force 2-3, the bountiful sunshine will have a little more opportunity to work its magic, thus balancing out at the same 12-13°C as on Saturday. A chilly old night is on the cards though, with a minimum air temperature of 5°C before midnight, meaning there is the slight chance of a late-season ground-frost in places. After midnight, however, a blanket of cloud will spread across the sky and that will recover temperatures by a few degrees, much to the relief of the Island’s farmers and growers.

Surf and the Water

The surf will hopefully bounce back to about 2 feet, and the cross-shore wind will possibly be light enough not tow impact it at all. Swimming conditions will be best of all on the south coast though, but hopefully the other coasts will also be lovely due to the lightness of that wind. High tides will be at 8:40am and 8:50pm (9.5m and 9.2m respectively). Low tide will be around 3pm.

Monday

Weather

Another day of lovely sunshine for the most part, with Sunday night’s cloud gradually clearing through the morning, and then a sunny afternoon- blessing us with a 13-14°C max and barely a breath of wind to negate it. All parts should feel equally pleasant.

Surf and the Water

Clean 1-2 feet surf on the west coast, and gorgeous swimming conditions on all coasts. Tides will be at breakfast time (9.7m on Saturday and 9.5m on Sunday. Low tides will be in the mid-afternoons. High tides will be at 9:15am and 9:30pm (9.0m and 8.8m respectively). Low tide will be around 3:30pm.

The Rest of Next Week

Weather

Maybe a little hazy sunshine on Tuesday, but I’m afraid this day is going to be a reminder of what whitish-grey skies look like. This is due to the passing of a couple of weather fronts overhead. The first will be a very weak affair, so no rain is expected on that one. In fact it will be a warm front, so we will hopefully be able to thank it for a comfortable 13°C max, despite the overall cloudiness. The second front will be a cold front around midnight, and that will bring a spell of rather heavy rain, and it will also be a game-changer for the rest of the week. Changing the game in a negative sense though I’m afraid, with rain or hail showers regularly punctuating the sunshine on all three days Wednesday to Friday. Max temps on those days only around 10-11°C, and quite often feeling colder than that, due to the moderate but fairly gusty N’ly wind.

Surf and the Water

The surf will be 2-3 feet and choppy for the majority of the time. Windsurfers and kitesurfers should be blessed with a few moments of goodness though, and swimmers should generally find smoothness down on the south coast. High tides will initially be in the mornings, but by the end of the week they will be at lunchtime, gradually reducing in height from 8.4m on Tuesday to 6.6m on Friday.

The next forecast update will be most likely be on Monday evening…

Previous Weather Fox Forecasts

Tide Tables
Swim Conditions
Ormering
Lihou Causeway

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