Cool
Average highs are around 11°C, so pack for cooler days.
Weather Guide
Iceland Average Monthly Weather
Weather score17Poor annual avg
Best months: May, June, July
Across the year, average daytime temperatures are around 5°C, sunshine averages 3h per day, and rainfall totals about 1230mm. Sea temperatures average 8°C across the year.
Annual weather
Annual averages
Temp
5°C
Rain
1230mm
Annual total
Sun
3h
Sea
8°C
Weather score
17
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 102mm, so some wet days are possible.
Limited sun
Sunshine averages 4.6h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 11°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
August11°C average high
August is one of Iceland's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
Rain
August102mm average rain
August 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
August4.6 hours average sun
August is brighter than Iceland's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August11°C average sea
August is one of Iceland's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
Weather score
August20 weather score
August 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