worldweather19°Cnear normal
usually 18°C–21°C
night: exceptionally warm
rain: typical rainfall
wind: typical
Weather in Jersey - 14-day forecast
Detailed weather forecast for Jersey, United Kingdom: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Jersey
today☁️
19°💧 0.6 mm
Sun🌧️
21°💧 0.1 mm
Mon🌧️
18°💧 0.1 mm
Tue🌧️
17°💧 1.8 mm
Wed🌧️
16°💧 0.8 mm
Thu🌧️
18°💧 0.4 mm
Fri🌧️
18°💧 0.2 mm
Sat🌧️
17°💧 9.2 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Tuesday 8 Sept in Jersey, the forecast high is 17°C. Typical daytime temperatures at this time of year range from 17°C to 21°C, so it will be exceptionally cool. It is cooler than 91% of similar days.
21°Cwarmer than usual
usually 18°C–21°C
warmer than 85% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
18°Ccooler than usual
usually 17°C–21°C
cooler than 73% of similar days
night: exceptionally warm
rain: typical rainfall
wind: typical
17°Cexceptionally cool
usually 17°C–21°C
cooler than 91% of similar days
night: warmer than usual
rain: more rain than usual
wind: stronger than usual
16°Cexceptionally cool
usually 17°C–21°C
cooler than 91% of similar days
night: warmer than usual
rain: typical rainfall
wind: typical
18°Cnear normal
usually 17°C–21°C
night: exceptionally warm
rain: typical rainfall
wind: typical
18°Ccooler than usual
usually 17°C–21°C
cooler than 70% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 19°C by day. The coolest year was 1984 (17°C) and the warmest was 2023 (25°C). The current forecast averages 18°C - lower than in 80% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - Jersey
No active weather warnings for Jersey (region: Manche). The national weather service is not forecasting dangerous conditions.
14-day forecast - Jersey
Jersey 30 & 45-day weather - long-range outlook
Next 16 days · forecast
18°
around 18° at night · days with rain: 5
Weeks 3-4 · avg for September
18°
around 13° at night · rain chance 54%
Weeks 5-7 · avg for October
15°
around 11° at night · rain chance 63%
The 30 & 45-day outlook for Jersey: the next 16 days are a numerical forecast updated daily - on average 18° by day and 18° at night. Further out we rely on multi-year climate averages: around 18° in September, and about 15° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Jersey
Saturday5 September 2026
☁️19°broken clouds
Sunday6 September 2026
🌧️21°light rain
Monday7 September 2026
🌧️18°light rain
Tuesday8 September 2026
🌧️17°light rain
Wednesday9 September 2026
🌧️16°light rain
Thursday10 September 2026
🌧️18°light rain
Friday11 September 2026
🌧️18°light rain
Saturday12 September 2026
🌧️17°moderate rain
Sunday13 September 2026
🌧️19°light rain
Monday14 September 2026
☀️18°clear sky
Tuesday15 September 2026
🌧️18°light rain
Wednesday16 September 2026
🌧️18°light rain
Thursday17 September 2026
🌧️18°light rain
Friday18 September 2026
☁️20°broken clouds
Saturday19 September 2026
🌧️20°light rain
Sunday20 September 2026
🌧️17°light rain
UV index in Jersey - is it safe to sunbathe?
Today the UV index in Jersey is 6 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in Jersey - info for allergy sufferers
Sea temperature - Jersey
Water today
20°C
Week avg
20°C
Waves today
0.7 m
How's the water?
brisk
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Jersey weather through the year
Warmest, driest months on average: April, May, June, July.
Upcoming public holidays in United Kingdom: Christmas Day — 25 December · Boxing Day — 28 December · New Year's Day — 1 January.
Nearby and related places
FAQ - Jersey weather
What is the weather like in Jersey today?
Today it is about 19° during the day and 17° at night, broken clouds.
How far ahead can I check the forecast for Jersey?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.