Weather in Sundsvall: May
 |
Average day temperature: | 54.6°F |
| Average night temperature: | 42.8°F | |
 |
Sea water temperature: | 41.6°F |
 |
Number of sunny days: | 10 days |
| Day length: | 16.5 - 19.2 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
forecast
| Sundsvall |
temperature
| Sundsvall |
Air temperature in May, °F
The highest day temperature during May of 2026 was 68°F. At the same time the lowest night temperature was 32°F. Daily and nightly averages during May were 56.2°F and 43.7°F.
Sea water temperature in Sundsvall in May, °F
The average sea water temperature in May of 2026 was 44.9°F. The highest and lowest sea temperatures during the month were 50.2°F and 40.8°F.
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Sundsvall in May is 1.0 in. Other months of the year show relatively similar values.
The average wind speed value in May is 6.7 mph The wind's strength is relatively same during the whole year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 9.6.
Best time for vacation in Sundsvall
Sundsvall on a weather map
11 mph
12 mph
7 mph
6 mph
8 mph
11 mph
7 mph
6 mph
