Weather in Sundsvall: January
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Average day temperature: | 23.7°F |
| Average night temperature: | 21.1°F | |
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Sea water temperature: | 33.1°F |
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Number of sunny days: | 6 days |
| Day length: | 5.2 - 7.4 hours | |
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Number of days with precipitation: | 4 days |
| Precipitation totals: | 1.8 in. | |
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| Sundsvall |
temperature
| Sundsvall |
Air temperature in January, °F
The highest day temperature during January of 2026 was 32°F. At the same time the lowest night temperature was -5°F. Daily and nightly averages during January were 18.8°F and 14.6°F.
Sea water temperature in Sundsvall in January, °F
The average sea water temperature in January of 2026 was 33.6°F. The highest and lowest sea temperatures during the month were 37.0°F and 30.9°F.
Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Sundsvall in January is 2.1 in. Other months of the year show relatively similar values.
The average wind speed value in January is 6.8 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 January is: 2.3.
Best time for vacation in Sundsvall
Sundsvall on a weather map
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