Measurements:
°C
°F
CURRENT WEATHER
22:18
Sundsvall
52°F
SE 5 mph
Feels like: 52°F
Precip: 26%
World Resorts Sweden Sundsvall Weather

7 Day Weather Forecast

09.08
tue
DAY
64°F
N 7 mph
precip
42%
NIGHT
50°F
SE 4 mph
precip
29%
09.09
wed
DAY
54°F
NW 4 mph
precip
36%
NIGHT
46°F
SE 10 mph
precip
32%
09.10
thu
DAY
46°F
SE 17 mph
precip
80%
NIGHT
48°F
SE 13 mph
precip
17%
09.11
fri
DAY
58°F
E 6 mph
precip
2%
NIGHT
48°F
SE 3 mph
precip
24%
09.12
sat
DAY
56°F
E 9 mph
precip
3%
NIGHT
50°F
NW 3 mph
precip
30%
09.13
sun
DAY
60°F
E 6 mph
precip
13%
NIGHT
46°F
SE 7 mph
precip
6%
09.14
mon
DAY
56°F
E 9 mph
precip
3%
NIGHT
52°F
N 1 mph
precip
19%

Sundsvall Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Sundsvall was 14.1°F. The maximum and minimum values were 11.7°F and 15.9°F respectively.

Sundsvall on the Weather Map

Best Time to Visit Sundsvall
The most sunny months:
July 12 days
June 11 days
May 10 days
The most warm months:
July 69.9 °F
August 67.0 °F
June 64.6 °F
Warmest sea temperature:
August 63.3 °F
July 62.8 °F
September 56.7 °F
The most cold months:
January 20.7 °F
February 24.2 °F
December 25.8 °F
The most rainy months:
September 4 days
August 4 days
October 3 days
The most windy months:
March 7 mph
April 7 mph
June 7 mph
more details