Mild
Average highs are around 20°C, so days are mild rather than hot.
Weather Guide
Jersey Average Monthly Weather
Weather score31Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 14°C, sunshine averages 5h per day, and rainfall totals about 901mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
14°C
Rain
901mm
Annual total
Sun
5h
Sea
13°C
Weather score
31
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 42mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.2h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Jersey with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July20°C average high
July is one of Jersey's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
July42mm average rain
July is one of Jersey's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
July8.2 hours average sun
July is one of Jersey's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
July17°C average sea
July sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to October
Sea temperatures are usually near 17°C in this stretch, so swimming comfort is at its strongest.
Weather score
July54 weather score
July is one of Jersey's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.