Current sea water temperature:
+43.9°F
| Minimum sea water temperature in May: | 53.8°F |
| Maximum sea water temperature in May: | 34.5°F |
| Average sea water temperature in May: | 41.5°F |
| more information | |
14 days
forecast
forecast
| Sundsvall |
monthly
weather
weather
| Sundsvall |
Sea water temperature for the last 10 days:
| May 16 | 43.9°F | May 11 | 42.3°F |
| May 15 | 45.0°F | May 10 | 42.8°F |
| May 14 | 43.0°F | May 9 | 43.5°F |
| May 13 | 44.4°F | May 8 | 43.2°F |
| May 12 | 41.9°F | May 7 | 42.1°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
May
May
| Sundsvall |
Best time for vacation in Sundsvall
Sundsvall on a weather map
Places in Sweden:
Name
°F
24 Hours Forecast
Sundsvall
Local time: 07:36
May 17, sunday
0900
50°F
NW
6 mph
6 mph
1200
54°F
N
11 mph
11 mph
1500
54°F
NE
8 mph
8 mph
1800
54°F
N
7 mph
7 mph
2100
48°F
N
5 mph
5 mph
May 18, monday
0000
43°F
NE
4 mph
4 mph
0300
41°F
E
2 mph
2 mph
0600
46°F
E
1 mph
1 mph
