Sundsvall/ Härnösand weather by month & the best time to visit
Sweden · seaside town · continental climate
The best time to visit Sundsvall/ Härnösand is July — its sunniest month (Sunshine Score 73/100), with August close behind. Sundsvall/ Härnösand averages about 1,720 hours of sunshine a year. Daytime highs around 20°C / 68°F and roughly 83 mm of rain in July.
When is the best time to visit Sundsvall/ Härnösand?
For sunshine, the best time to visit Sundsvall/ Härnösand is July, then August. The dullest month is January (0/100, 58 mm of rain). The full month-by-month picture is in the table below.
How sunny is Sundsvall/ Härnösand?
Sundsvall/ Härnösand isn't a sunny place by world standards: about 1,720 hours of sunshine a year. 73 Sunshine Score points separate July (73) from January (0), so the month you pick matters. It ranks #12 of 36 destinations in Sweden for annual sunshine, above the national median of 1,697 hours. The year's 792 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | -3° / 27°F | -7° / 19°F | 58 mm | 0 | 0° / 32°F |
| February | 0 | -2° / 28°F | -7° / 19°F | 44 mm | 0 | 0° / 32°F |
| March | 0 | 1° / 34°F | -5° / 23°F | 45 mm | 1 | 1° / 34°F |
| April | 0 | 7° / 45°F | 0° / 32°F | 46 mm | 2 | 3° / 37°F |
| May | 32 | 13° / 55°F | 5° / 41°F | 64 mm | 3 | 11° / 52°F |
| June | 58 | 17° / 63°F | 10° / 50°F | 64 mm | 4 | 19° / 66°F |
| July | 73 | 20° / 68°F | 13° / 55°F | 83 mm | 4 | 20° / 68°F |
| August | 64 | 19° / 66°F | 12° / 54°F | 100 mm | 3 | 20° / 68°F |
| September | 37 | 14° / 57°F | 8° / 46°F | 76 mm | 2 | 16° / 61°F |
| October | 0 | 7° / 45°F | 3° / 37°F | 81 mm | 1 | 9° / 48°F |
| November | 0 | 2° / 36°F | -1° / 30°F | 64 mm | 0 | 4° / 39°F |
| December | 0 | -1° / 30°F | -5° / 23°F | 67 mm | 0 | 0° / 32°F |
Sea temperature in Sundsvall/ Härnösand by month
The sea off Sundsvall/ Härnösand is warmest in July at around 20°C / 68°F, and coolest in January at 0°C / 32°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Sundsvall/ Härnösand: questions and answers
What kind of destination is Sundsvall/ Härnösand?
Sundsvall/ Härnösand is a seaside town in Sweden with a continental climate — the sea reaches 20°C at its warmest.
How many hours of sunshine does Sundsvall/ Härnösand get a year?
Sundsvall/ Härnösand gets about 1,720 hours of sunshine a year, at its best around July.
When is the best time to visit Sundsvall/ Härnösand?
The sunniest time to visit Sundsvall/ Härnösand is July, when the Sunshine Score peaks at 73/100 (with August close behind). Expect daytime highs around 20°C / 68°F.
What is the least sunny month in Sundsvall/ Härnösand?
January is the least sunny month in Sundsvall/ Härnösand, scoring 0/100 with about 58 mm of rain.
What is the sea temperature in Sundsvall/ Härnösand?
The sea in Sundsvall/ Härnösand ranges from about 0°C (January) to 20°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Sundsvall/ Härnösand?
The typical midday UV index in Sundsvall/ Härnösand peaks around 4 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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