27.08
thu
thu
Day
68°F
NW 6 mph
Precip.
10%
10%
Night
52°F
NW 2 mph
Precip.
32%
32%
28.08
fri
fri
Day
68°F
NW 7 mph
Precip.
2%
2%
Night
57°F
NW 3 mph
Precip.
30%
30%
29.08
sat
sat
Day
57°F
NW 15 mph
Precip.
46%
46%
Night
55°F
N 5 mph
Precip.
43%
43%
30.08
sun
sun
Day
66°F
NE 4 mph
Precip.
4%
4%
Night
59°F
N 3 mph
Precip.
29%
29%
31.08
mon
mon
Day
64°F
N 9 mph
Precip.
21%
21%
Night
52°F
SE 8 mph
Precip.
25%
25%
01.09
tue
tue
Day
61°F
NE 5 mph
Precip.
13%
13%
Night
54°F
W 2 mph
Precip.
38%
38%
02.09
wed
wed
Day
57°F
E 6 mph
Precip.
59%
59%
Night
48°F
SE 11 mph
Precip.
20%
20%
sea water
temperature
temperature
| Sundsvall |
monthly
weather
weather
| Sundsvall |
current
weather
weather
| Sundsvall |
14 days
forecast
forecast
| Sundsvall |
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 60.7°F. The highest and lowest sea temperatures during the month were 63.0°F and 56.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 57.5°F. The highest and lowest sea temperatures during the month were 60.6°F and 53.1°F.
Air temperature in Sundsvall, °F
Precipitation total in Sundsvall, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Sundsvall
Sundsvall on a weather map
Places in Sweden:
Name
°F
24 Hours Forecast
Sundsvall
Local time: 06:59
August 27, thursday
0900
61°F
NW
4 mph
4 mph
1200
68°F
NW
6 mph
6 mph
1500
66°F
NW
8 mph
8 mph
1800
63°F
NW
6 mph
6 mph
2100
54°F
NW
3 mph
3 mph
August 28, friday
0000
52°F
NW
2 mph
2 mph
0300
52°F
W
2 mph
2 mph
0600
52°F
SW
1 mph
1 mph
