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Sundby Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sundby.
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Climate overview of Sundby
Temperatures in Sundby, Sodermanland, Sweden, vary greatly throughout the year. July is the hottest month at 24°C (75°F), while January is the coldest at 1°C (34°F).
Sundby sees a moderate amount of rain/snowfall, totalling around 667 mm (26 in) per year. It experiences a distinct dry season from February to March, with warm summers and very cold winters, creating some seasonal variation. The most sunshine falls in June, with an average of 9.8 hours of daily sunshine.
Sundby Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sundby - and find the best time to visit.
Monthly Temperature in Sundby
The climate in Sundby is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in July, the warmest time of the year, to a very cold 1°C (34°F) during cooler months like January.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around -5°C (23°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sundby
Generally, Sundby receives mid-range precipitation levels, with 667 mm (26 in) annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, July it receives moderate rainfall, averaging 81 mm (3.2 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month March brings less snow/rainfall, with 35 mm (1.4 in) over 12 snowy/rainy days. For more details, please visit our Sundby Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sundby
Seasonal changes in sunshine hours are quite dramatic in Sundby. While June receives considerable daily sunshine with up to 9.8 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.1 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Mälaren, Sweden (32 KM, 20 Miles).
Daily hours of sunshine
Data from: Mälaren, Sweden (32 KM, 20 Miles).
Best Time to Visit Sundby
For comfortable weather, consider visiting Sundby in June, July and August. Conditions are usually least favourable in January, February, March, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
cold
Apr
mixed
May
good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
good
Oct
mixed
Nov
cold
Dec
cold
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: June
- Fewer rainy days: February, March, April, May and June
- Seasonal pattern: A distinct dry season from February to March, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in Sundby
What is the best time to visit Sundby?
June, July and August typically offer the most optimal weather in Sundby. In contrast, January, February, March, November and December tend to have less optimal conditions. Sundby has a distinct dry season from February to March, with warm summers and very cold winters.
What temperatures can I expect in Sundby?
Daytime highs range from 1°C (34°F) in January to 24°C (75°F) in July. Nighttime lows range from -5°C (23°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Sundby get?
Annual rainfall is around 667 mm (26 in). July is the wettest month with 81 mm (3.2 in), while March is the driest with 35 mm (1.4 in).
How sunny is Sundby?
Sundby receives around 1,829 hours of sunshine per year. June is the sunniest month with 293 hours, while December is the cloudiest with just 34 hours.
Sundby 3-Day Forecast
Sundby on the map
Sundby is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Lund
18°C (64°F) Malmö19°C (66°F) Gothenburg
18°C (64°F) Karlskrona17°C (63°F) Falkenberg18°C (64°F) Simrishamn17°C (63°F) Stockholm17°C (63°F) Visby
17°C (63°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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