Cool
Average highs are around 9°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 9°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 60mm, which is relatively low for holiday planning.
Monthly averages
Temp
9°C
Rain
60mm
Sun
5.8h
Sea
7°C
Weather score
26
Poor
Cool
Average highs are around 9°C, so pack for cooler days.
Drier
Rainfall averages 60mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Compare Reykjavik, Iceland with nearby places by weather score, rain, sun, temperature, and swim conditions.
May9°C average high
May is close to Reykjavik'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.
May60mm average rain
May is one of Reykjavik's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May5.8 hours average sun
May is one of Reykjavik's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
May7°C average sea
May is close to Reykjavik's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.
May26 weather score
May is one of Reykjavik's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsApril to September
These months have the strongest weather score in the monthly averages.