Measurements:
°C
°F
CURRENT WEATHER
22:20
Oslo
52°F
N 6 mph
Feels like: 50°F
Precip: 30%
World Resorts Norway Oslo Weather

7 Day Weather Forecast

09.08
tue
DAY
62°F
NE 10 mph
precip
16%
NIGHT
48°F
N 3 mph
precip
42%
09.09
wed
DAY
58°F
SW 1 mph
precip
17%
NIGHT
44°F
SE 5 mph
precip
19%
09.10
thu
DAY
58°F
E 3 mph
precip
2%
NIGHT
46°F
SE 0 mph
precip
15%
09.11
fri
DAY
56°F
N 4 mph
precip
13%
NIGHT
50°F
NE 4 mph
precip
27%
09.12
sat
DAY
56°F
NE 9 mph
precip
14%
NIGHT
50°F
N 6 mph
precip
21%
09.13
sun
DAY
58°F
NE 3 mph
precip
17%
NIGHT
56°F
SW 3 mph
precip
23%
09.14
mon
DAY
58°F
NW 5 mph
precip
19%
NIGHT
48°F
NE 1 mph
precip
32%

Oslo Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Oslo was 15.9°F. The maximum and minimum values were 13.5°F and 18.2°F respectively.

Oslo on the Weather Map

Best Time to Visit Oslo
The most sunny months:
June 11 days
May 11 days
July 11 days
The most warm months:
July 70.7 °F
August 67.2 °F
June 66.5 °F
Warmest sea temperature:
July 67.5 °F
August 66.7 °F
June 61.5 °F
The most cold months:
January 21.9 °F
February 26.1 °F
December 26.7 °F
The most rainy months:
August 6 days
May 5 days
June 5 days
The most windy months:
May 6 mph
June 6 mph
April 6 mph
more details