Cool
Average highs are around 8°C, so pack for cooler days.
September verdict
Iceland in September
Weather score17Poor
Poor for holiday weather
Average highs are around 8°C, so pack for cooler days. Sunshine averages 3.3h per day, so this is not one of the brighter months. Rainfall averages 105mm, so some wet days are possible.
September weather
Monthly averages
Temp
8°C
Rain
105mm
Sun
3.3h
Sea
10°C
Weather score
17
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 105mm, 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 Iceland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September8°C average high
September is close to Iceland'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
September105mm average rain
September sits near Iceland's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary and April to September
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 Iceland'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 September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
Weather score
September17 weather score
September sits close to Iceland'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.
Hotels near Iceland
Marriott
ION Adventure Hotel, Nesjavellir, a Member of Design Hotels™Nesjavellir, Iceland
ION City Hotel, a Member of Design Hotels™Reykjavik, Iceland
101 Hotel, Reykjavik, a Member of Design Hotels™Reykjavik, Iceland
The Reykjavik EDITIONReykjavik, Iceland
Courtyard Reykjavik Keflavik AirportReykjanesbaer, Iceland