Cool
Average highs are around 3°C, so pack for cooler days.
September verdict
Jan Mayen, Norway in September
Weather score14Poor
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 1.8h per day, so this is not one of the brighter months. Rainfall averages 89mm, so some wet days are possible.
September weather
Monthly averages
Temp
3°C
Rain
89mm
Sun
1.8h
Sea
6°C
Weather score
14
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 89mm, so some wet days are possible.
Limited sun
Sunshine averages 1.8h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 6°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
September3°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
September89mm average rain
September is one of Jan Mayen's wettest months, so rain is likely to be a major planning factor.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September1.8 hours average sun
September 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
September6°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 5°C in this stretch, so swimming comfort is at its strongest.
Weather score
September14 weather score
September is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsApril to August
These months have the strongest weather score in the monthly averages.