Cool
Average highs are around 5°C, so pack for cooler days.
Weather Guide
Jan Mayen, Norway Average Monthly Weather
Weather score18Poor annual avg
Best months: June, May, July
Across the year, average daytime temperatures are around -1°C, sunshine averages 2.1h per day, and rainfall totals about 815mm. Sea temperatures average 3°C across the year.
Annual weather
Annual averages
Temp
-1°C
Rain
815mm
Annual total
Sun
2.1h
Sea
3°C
Weather score
18
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 70mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Weather map
Compare Jan Mayen, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August5°C average high
August is one of Jan Mayen's hottest months, so shade and slower afternoons matter.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
August70mm average rain
August sits near Jan Mayen's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August3 hours average sun
August sits close to Jan Mayen's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to July
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August7°C average sea
August is one of Jan Mayen's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 5°C in this stretch, so swimming comfort is at its strongest.
Weather score
August20 weather score
August sits close to Jan Mayen's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.