World Resorts Norway Trondheim Weather

Trondheim sea water temperature

Current sea water temperature:
+58.5°F
Minimum sea water temperature in July: 71.6°F
Maximum sea water temperature in July: 52.7°F
Average sea water temperature in July: 59.4°F

Sea water temperature for the last 10 days:

July 16 58.5°F July 11 55.4°F
July 15 59.0°F July 10 55.4°F
July 14 57.0°F July 9 54.7°F
July 13 57.2°F July 8 57.4°F
July 12 56.1°F July 7 57.6°F

When is the warmest sea in Trondheim?

Based on the data about daily sea water temperature for the last three years the warmest sea in Trondheim was noticed in July, August and September.

Monthly Sea Temperatures in Trondheim, °F

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 57.7°F. The highest and lowest sea temperatures during the month were 60.4°F and 54.7°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 60.0°F. The highest and lowest sea temperatures during the month were 67.6°F and 55.4°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 56.0°F. The highest and lowest sea temperatures during the month were 59.4°F and 52.3°F.

Best time for vacation in Trondheim

Sunniest months:
July 8 days
May 8 days
August 8 days
Warmest months:
July 63.8 °F
August 62.1 °F
June 58.8 °F
Warmest sea temp:
July 59.5 °F
August 59.4 °F
September 54.9 °F
Coldest months:
January 26.7 °F
February 29.5 °F
December 29.7 °F
Rainiest months:
September 6 days
July 5 days
August 5 days
Windiest months:
January 8.3 mph
December 8.0 mph
March 7.9 mph

Trondheim on a weather map

Trondheim
+64°F
E 6 mph
Feels like: +64°F
Precip.: 6%
Places in Norway:
Name
°F
+64°F
+84°F
+57°F
+84°F
+63°F
+54°F
+64°F
+73°F
+75°F
+79°F
24 Hours Forecast
Trondheim
Local time: 18:28
July 16, thursday
2100
59°F
E
5 mph
July 17, friday
0000
54°F
E
4 mph
0300
54°F
E
3 mph
0600
54°F
E
4 mph
0900
57°F
E
5 mph
1200
57°F
SE
9 mph
1500
57°F
SE
9 mph
1800
57°F
SE
11 mph
Units of measurement: °C / °F