Reykjavik Weather: May
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Average Day Temperature: | 46.1°F |
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Average Night Temperature: | 40.4°F |
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Sea Water Temperature: | 44.0°F |
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Number of Sunny Days: | 6 days |
| Sunshine Hours: | 16.9 - 20.0 hours | |
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Number of Rainy Days: | 6 days |
| Precipitation Totals: | 3.1 in | |
| detailed information | ||
forecast
| Reykjavik |
Temperature
| Reykjavik |
Air Temperature in May, °F
The highest day temperature in May 2026 was 52°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 43.4°F и 39.5°F respectivly.
Reykjavik Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for Reykjavik was 44.0°F. The maximum and minimum values were 40.8°F and 46.8°F respectively.
Most of the days in May are gloomy but you can also expect sunny days.
Precipitation Totals in May, in
Precipitation total in May for Reykjavik is 3.1 in. It makes may one of the least rainy months of the year.
The average wind speed in May is 12.0 mph. It makes May one of the most windless months of the year for Reykjavik.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Reykjavik in May is 7.0 hours.
| 1800 | ![]() |
52°F | E 6 mph |
| 2100 | ![]() |
50°F | NW 1 mph |
| 0000 | ![]() |
48°F | S 1 mph |
| 0300 | ![]() |
48°F | SE 5 mph |
| 0600 | ![]() |
48°F | SE 8 mph |
| 0900 | ![]() |
48°F | SE 7 mph |
| 1200 | ![]() |
52°F | SE 6 mph |
| 1500 | ![]() |
52°F | SE 6 mph |































