Weather in Sundsvall in December 2025
- December is usually the wettest month of the year in Sundsvall;
Average weather
Average temperature in Sundsvall in December
The temperature in December is +25°F on average, with a range between a maximum of +43°F during the day and a minimum of +1°F at night.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +21°F to +21°F.
Is Sundsvall warm or cold in December?
Sundsvall is typically cold in December.
Maximum temperatures go down compared to the previous month from +36°F to +30°F. The minimum temperature also goes down from +28°F to +19°F.
Wear your winter warms as it will be cold. To save space, layer, and don’t forget gloves and a scarf.
December is one of the coolest months in Sundsvall, here is the comparison with other months:
Climate in Sundsvall in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +36°F | +30°F | +27°F | ||||
| Min. temperature | ||||||
| -4°F | -15°F | -24°F | ||||
| Max. temperature | ||||||
| +57°F | +50°F | +50°F | ||||
| Rainfall | ||||||
| 26 mm | 9 mm | 4 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 87% | 87% | 86% | ||||
| Air pressure | ||||||
| 1009 HPa | 1006 HPa | 1007 HPa | ||||
| Sunny days | ||||||
| 4 | 5 | 3 | ||||
| Cloudy days | ||||||
| 11 | 11 | 12 | ||||
| Rainy days | ||||||
| 6 | 2 | 1 | ||||
| Snowy days | ||||||
| 10 | 13 | 14 | ||||
December often has better weather than November. It’s getting colder in December. From +36°F in the day, the average maximum temperature lowers to +30°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 26 mm to 9 mm. Humidity levels don’t change as the month goes on, averaging around 87%. The average wind speed doesn’t change much during December, staying around 2 m/s. The good news is there are likely to be more sunny days in December, from 4 to 5.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Sundsvall is gradually decreasing during December, going from 6 m/s to 3 m/s over the course of the month.
Snow
December is one of the snowiest months in Sundsvall.
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in Sundsvall?
Climate Change Over the Years
The climate in Sundsvall in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+42°F) and the highest in 2020 (+51°F). The driest year was 1997 with only 281 mm of rainfall, and the wettest year was 2000 with 645 mm.
FAQ
Is December a good time to visit Sundsvall?
Can you sunbathe in Sundsvall in December?
Is Sundsvall rainy in December?
Is it sunny in Sundsvall in December?
Other cities in Sweden
Monthly weather in Sundsvall
Source of the data
For this page, we’ve looked at the typical weather in Sundsvall, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
