Cool
Average highs are around 3°C, so pack for cooler days.
September verdict
Vatnajökull National Park, Iceland in September
Weather score13Poor
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 3.3h per day, so this is not one of the brighter months. Rainfall averages 158mm, so some wet days are possible.
September weather
Monthly averages
Temp
3°C
Rain
158mm
Sun
3.3h
Sea
10°C
Weather score
13
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 158mm, so some wet days are possible.
Limited sun
Sunshine averages 3.3h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Weather map
Compare Vatnajökull National Park, Iceland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September3°C average high
September is close to Vatnajökull National Park's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
September158mm average rain
September sits near Vatnajökull National Park's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsApril to July
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September3.3 hours average sun
September sits close to Vatnajökull National Park's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September10°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to August
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
Weather score
September13 weather score
September sits close to Vatnajökull National Park's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsApril to September
These months have the strongest weather score in the monthly averages.
