The weather in Selfoss in May is very cold with temperatures between 4°C and 9°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Selfoss. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Selfoss can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Selfoss in May 2025.
If you’re planning to visit Selfoss in the near future, we highly recommend that you review the 14 day weather forecast for Selfoss before you arrive.
Temperatures
9° / 4°
Rainy Days
10
Snowy Days
2
Dry Days
19
Rainfall
138
mm
Sun Hours
7.1
Hrs
