climigo

Jersey

When to go?

The best months are June–September. Avoid November–December (often rainy).

Climate zones

Saint HelierSaint HelierSaint Helier

Mean maximum and minimum temperature and mean monthly precipitation of the season (the mean of its three months), ERA5-Land 1996–2025, at about 9 km resolution: colours are in levels (the same as the city scale) and smaller details are not real.

What is the climate like?

Area mean indicative, over the whole territory

Temperature and rain

January 9°5°
February 9°5°
March 11°6°
April 13°7°
May 16°10°
June 19°13°
July 21°15°
August 21°15°
September 19°14°
October 16°12°
November 12°9°
December 10°6°

Monthly min and max temperature (°C)

−5°0°5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDec5.2 · 8.8 °CJanuary: 5.2 · 8.8 °C5.0 · 9.2 °CFebruary: 5.0 · 9.2 °C5.9 · 11.0 °CMarch: 5.9 · 11.0 °C7.4 · 13.4 °CApril: 7.4 · 13.4 °C10.1 · 16.3 °CMay: 10.1 · 16.3 °C12.9 · 19.2 °CJune: 12.9 · 19.2 °C14.6 · 20.8 °CJuly: 14.6 · 20.8 °C14.9 · 21.0 °CAugust: 14.9 · 21.0 °C13.6 · 19.2 °CSeptember: 13.6 · 19.2 °C11.5 · 16.0 °COctober: 11.5 · 16.0 °C8.6 · 12.2 °CNovember: 8.6 · 12.2 °C6.4 · 9.7 °CDecember: 6.4 · 9.7 °C

Monthly min and max temperature (°C)

Jan 5.2 – 8.8 °C
Feb 5.0 – 9.2 °C
Mar 5.9 – 11.0 °C
Apr 7.4 – 13.4 °C
May 10.1 – 16.3 °C
Jun 12.9 – 19.2 °C
Jul 14.6 – 20.8 °C
Aug 14.9 – 21.0 °C
Sep 13.6 – 19.2 °C
Oct 11.5 – 16.0 °C
Nov 8.6 – 12.2 °C
Dec 6.4 – 9.7 °C

How much it rains

January 100 mm14 d
February 75 mm12 d
March 65 mm11 d
April 54 mm9 d
May 54 mm9 d
June 53 mm8 d
July 48 mm8 d
August 61 mm9 d
September 64 mm9 d
October 112 mm14 d
November 123 mm16 d
December 123 mm15 d

Rain days and how much water

0102030 dJanFebMarAprMayJunJulAugSepOctNovDec100 mm · 14 rain days · 7 mm a dayJanuary: 100 mm · 14 rain days · 7 mm a day75 mm · 12 rain days · 6 mm a dayFebruary: 75 mm · 12 rain days · 6 mm a day65 mm · 11 rain days · 6 mm a dayMarch: 65 mm · 11 rain days · 6 mm a day54 mm · 9 rain days · 6 mm a dayApril: 54 mm · 9 rain days · 6 mm a day54 mm · 9 rain days · 6 mm a dayMay: 54 mm · 9 rain days · 6 mm a day53 mm · 8 rain days · 7 mm a dayJune: 53 mm · 8 rain days · 7 mm a day48 mm · 8 rain days · 6 mm a dayJuly: 48 mm · 8 rain days · 6 mm a day61 mm · 9 rain days · 7 mm a dayAugust: 61 mm · 9 rain days · 7 mm a day64 mm · 9 rain days · 7 mm a daySeptember: 64 mm · 9 rain days · 7 mm a day112 mm · 14 rain days · 8 mm a dayOctober: 112 mm · 14 rain days · 8 mm a day123 mm · 16 rain days · 8 mm a dayNovember: 123 mm · 16 rain days · 8 mm a day123 mm · 15 rain days · 8 mm a dayDecember: 123 mm · 15 rain days · 8 mm a day

Rain days and how much water

Jan 100 mm14 d
Feb 75 mm12 d
Mar 65 mm11 d
Apr 54 mm9 d
May 54 mm9 d
Jun 53 mm8 d
Jul 48 mm8 d
Aug 61 mm9 d
Sep 64 mm9 d
Oct 112 mm14 d
Nov 123 mm16 d
Dec 123 mm15 d

Bars: length = rain days, thickness = mm on a rain day, area = the month's rain. 3 mm a day7 mm a day15 mm a day

Colour = the month's rain: 103060100160250400mm

Daylight hours

January 8 h 39
February 10 h 10
March 11 h 51
April 13 h 43
May 15 h 19
June 16 h 13
July 15 h 50
August 14 h 26
September 12 h 38
October 10 h 51
November 9 h 09
December 8 h 13

Mean daylight hours over the whole territory.

Spatial mean over the whole area, weighted by area (cosine of the latitude), not by population: indicative only, since the climate varies a lot within an area (coasts, plains, mountains). Look at the cities for the weather you will find.

Main cities

Saint Helier

Cities