Long term weather forecast
Long term weather forecast

May weather forecast and Climate
Reykjavík, Iceland

  • Average high temperature in May: 48.9°F

Warmest month (with highest average high temperature) is July (55.9°F).
Month with lowest average high temperature is January (35.4°F).

  • Average low temperature in May: 38.5°F

Month with highest average low temperature is July (46.9°F).
Coldest month (with lowest average low temperature) is January (26.6°F).

  • Average rainfall in May: 1.7"

Wettest month (with highest rainfall) is October (3.4").
Driest month (with lowest rainfall) is May (1.7").

  • Average rainfall days in May: 9.8 days

Month with highest number of rainy days is October (14.5 days).
Month with lowest number of rainy days is May (9.8 days).

  • Average sea temperature in May: 46°F

Best months for swimming (with highest average sea temperature) are July, August and September (52°F).
Coldest months (with lowest average sea temperature) are January, February, March, April and December (45°F).

  • Average daylight in May: 19h

Month with longest days is June (Average daylight: 21).
Month with shortest days is December (Average daylight: 4).

  • Average sunshine in May: 6.2h

Month with most sunshine is May (Average sunshine: 6.2).
Month with least sunshine is December (Average sunshine: 0.4).

  • Average UV index in May: 3

Months with highest UV index are June and July (UV index 4).
Months with lowest UV index are January, February, November and December (UV index 0).