World Resorts Norway Trondheim Weather

Trondheim 7 Days Forecast

03.09
thu
Day
52°F
E 14 mph
Precip.
45%
Night
50°F
W 4 mph
Precip.
11%
04.09
fri
Day
54°F
W 4 mph
Precip.
16%
Night
54°F
SW 9 mph
Precip.
23%
05.09
sat
Day
54°F
SW 5 mph
Precip.
12%
Night
52°F
E 6 mph
Precip.
42%
06.09
sun
Day
54°F
E 13 mph
Precip.
19%
Night
52°F
W 9 mph
Precip.
24%
07.09
mon
Day
52°F
SW 2 mph
Precip.
15%
Night
52°F
SW 5 mph
Precip.
8%
08.09
tue
Day
55°F
W 5 mph
Precip.
4%
Night
54°F
SW 4 mph
Precip.
20%
09.09
wed
Day
57°F
NW 11 mph
Precip.
28%
Night
55°F
NW 12 mph
Precip.
16%

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.

Air temperature in Trondheim, °F

Precipitation total in Trondheim, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Trondheim

Sunniest months:
July 8 days
May 8 days
August 8 days
Warmest months:
July 63.4 °F
August 61.6 °F
June 58.8 °F
Warmest sea temp:
July 59.4 °F
August 59.3 °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

Current weather
00:48
Trondheim
+50°F
E 6 mph
Feels like: +48°F
Precip.: 18%
Places in Norway:
Name
°F
Bergen
+54°F
Lillehammer
+48°F
Ålesund
+55°F
Oslo
+48°F
Stavanger
+55°F
Tromse
+48°F
Trondheim
+50°F
Flam
+36°F
Hemsedal
+34°F
Holmenkollen
+50°F
24 Hours Forecast
Trondheim
Local time: 00:48
September 03, thursday
0300
50°F
E
8 mph
0600
50°F
E
10 mph
0900
50°F
E
13 mph
1200
52°F
E
14 mph
1500
52°F
E
8 mph
1800
54°F
E
4 mph
2100
52°F
NE
2 mph
September 04, friday
0000
50°F
W
4 mph
Units of measurement: °C / °F