Current sea water temperature:
+32.9°F
| Minimum sea water temperature in December: | 40.6°F |
| Maximum sea water temperature in December: | 32.0°F |
| Average sea water temperature in December: | 35.3°F |
| more information | |
14 days
forecast
forecast
| Sundsvall |
monthly
weather
weather
| Sundsvall |
Sea water temperature for the last 10 days:
| December 17 | 32.9°F | December 12 | 33.8°F |
| December 16 | 32.2°F | December 11 | 33.6°F |
| December 15 | 32.0°F | December 10 | 33.8°F |
| December 14 | 33.8°F | December 9 | 35.2°F |
| December 13 | 33.8°F | December 8 | 35.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Sundsvall?
Based on the data about daily sea water temperature for the last three years the warmest sea in Sundsvall was noticed in August, July and September.
Monthly Sea Temperatures in Sundsvall, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 61.8°F. The highest and lowest sea temperatures during the month were 70.3°F and 55.2°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 63.6°F. The highest and lowest sea temperatures during the month were 70.7°F and 55.2°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.
current
weather
weather
| Sundsvall |
weather in
December
December
| Sundsvall |
Best time for vacation in Sundsvall
Sundsvall on a weather map
Places in Sweden:
Name
°F
24 Hours Forecast
Sundsvall
Local time: 23:43
December 18, thursday
0000
28°F
SE
3 mph
3 mph
0300
30°F
N
1 mph
1 mph
0600
32°F
N
3 mph
3 mph
0900
34°F
N
6 mph
6 mph
1200
37°F
N
9 mph
9 mph
1500
37°F
N
11 mph
11 mph
1800
39°F
NE
12 mph
12 mph
2100
39°F
NE
9 mph
9 mph
