In general the best time to visit Sundsvall is probably July, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
May, June, July usually has good weather. Average maximum temperature reaches +21°C during July.
In January, February, March, April, August, September, October, December the weather is average. Expect around 58 rainy days, and the precipitation amounts to approximately 80 mm in August.
November bring not the best weather. November is the coldest month with the temperature going down to -2°C.
Climate in Sundsvall
Here is the detailed breakdown of the climate in Sundsvall for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+10°C
+11°C
+18°C
+22°C
+28°C
+31°C
+32°C
+30°C
+25°C
+20°C
+14°C
+10°C
Average Maximum Temperature
-3°C
-2°C
+2°C
+7°C
+13°C
+18°C
+21°C
+19°C
+14°C
+8°C
+2°C
-1°C
Minimum Temperature
-31°C
-30°C
-25°C
-13°C
-7°C
0°C
+5°C
+3°C
-2°C
-15°C
-20°C
-26°C
Avg. water temperature
-
-
-
-
-
-
-
-
-
-
-
-
Humidity, %
86
83
78
73
68
68
72
77
81
84
87
87
Rain, mm
4
2
5
19
40
57
72
80
59
52
26
9
Snow, mm
43
30
33
18
3
0
0
0
0
6
29
38
Average wind speed, m/s
2
2
2
2
2
2
2
2
2
2
2
2
Sunny Days
3
4
6
6
6
5
5
4
4
5
4
5
Cloud Days
12
12
11
10
9
8
8
9
10
11
11
11
Rainy Days
1
1
2
7
15
16
17
17
15
13
6
2
Snowy Days
14
11
11
7
1
0
0
0
0
2
10
13
Average Temperature
Here are the average maximum and minimum temperatures in Sundsvall during the whole year:
The hottest month in Sundsvall is July with average maximum temperature going up to +21°C. The coldest month is January with the lowest temperatures of -9°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Sundsvall looks throughout the year, in %:
The most humid month in Sundsvall is December with average humidity going up to 87%. The least humid month is May with an average humidity of 68%.
Rain
Amount of rainfall in mm. in Sundsvall during the whole year based on historical data:
The sunniest and driest month is March with approximately 6 sunny days and a total precipitation of around 5 mm. The rainiest and wettest month is August with approximately 17 rainy days and 80 mm of total precipitation.
Snow
Amount of snow in mm. in Sundsvall during the whole year based on historical data:
The snowiest month is January with approximately 14 snowy days.
FAQ
Frequently asked questions about the weather in Sundsvall:
What is the hottest month in Sundsvall?
The hottest month in Sundsvall is July with average maximum temperature of +21°C.
What is the coldest month in Sundsvall?
The coldest month in Sundsvall is January with minimum temperatures of -9°C.
Is Sundsvall worth visiting in winter?
Winter in Sundsvall could be a good time to visit, as the weather is generally ok.
When does it rain the least in Sundsvall?
if you're looking to visit Sundsvall when it rains the least, you should plan your trip for August, July, September. During this time, rainfall is rare with the driest month being February with only 2 mm of rain.
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.