World Resorts Norway Trondheim Weather

Trondheim 14 Days Forecast

15.09
tue
Day
54°F
W 6 mph
Precip.
23%
Night
54°F
NE 2 mph
Precip.
52%
16.09
wed
Day
52°F
E 12 mph
Precip.
71%
Night
48°F
SE 11 mph
Precip.
38%
17.09
thu
Day
48°F
N 1 mph
Precip.
20%
Night
46°F
SW 9 mph
Precip.
12%
18.09
fri
Day
46°F
W 4 mph
Precip.
29%
Night
46°F
NE 6 mph
Precip.
20%
19.09
sat
Day
48°F
NW 4 mph
Precip.
34%
Night
50°F
NE 3 mph
Precip.
60%
20.09
sun
Day
52°F
E 17 mph
Precip.
33%
Night
50°F
E 12 mph
Precip.
30%
21.09
mon
Day
52°F
SE 14 mph
Precip.
36%
Night
46°F
SE 6 mph
Precip.
12%
22.09
tue
Day
48°F
E 2 mph
Precip.
20%
Night
48°F
N 3 mph
Precip.
18%
23.09
wed
Day
50°F
SE 12 mph
Precip.
34%
Night
48°F
SE 14 mph
Precip.
39%
24.09
thu
Day
50°F
SE 16 mph
Precip.
31%
Night
48°F
SE 14 mph
Precip.
17%
25.09
fri
Day
50°F
SE 11 mph
Precip.
18%
Night
48°F
W 9 mph
Precip.
12%
26.09
sat
Day
54°F
NW 8 mph
Precip.
15%
Night
48°F
W 8 mph
Precip.
16%
27.09
sun
Day
46°F
W 2 mph
Precip.
16%
Night
46°F
SW 3 mph
Precip.
21%
28.09
mon
Day
48°F
SW 5 mph
Precip.
5%
Night
50°F
SW 3 mph
Precip.
8%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 56.6°F. The highest and lowest sea temperatures during the month were 58.6°F and 53.6°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
18:07
Trondheim
+55°F
SW 12 mph
Feels like: +54°F
Precip.: 23%
Places in Norway:
Name
°F
Bergen
+59°F
Lillehammer
+50°F
Ålesund
+54°F
Oslo
+57°F
Stavanger
+59°F
Tromse
+52°F
Trondheim
+55°F
Flam
+46°F
Hemsedal
+41°F
Holmenkollen
+55°F
24 Hours Forecast
Trondheim
Local time: 18:07
September 15, tuesday
2100
57°F
SW
11 mph
September 16, wednesday
0000
54°F
NE
2 mph
0300
52°F
SE
2 mph
0600
52°F
E
7 mph
0900
52°F
E
12 mph
1200
52°F
E
12 mph
1500
52°F
E
16 mph
1800
52°F
SE
19 mph
Units of measurement: °C / °F