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Oslo September Weather

Averages and records for weather in Oslo, Norway in the month of September.

Typical Oslo September Weather 1991–2020
Average daily high	16.4 °C
Average daily low	8.6 °C
Average monthly precipitation	8.3 cm
Daily chance of precipitation	43.4%

Oslo September Weather Records 1937–2024
Highest temperature	26.4 °C	September 3, 1991
Lowest temperature	-3.3 °C	September 27, 1939
Highest daily low	17.0 °C	September 5, 1968
Lowest daily high	4.4 °C	September 23, 1952
Hottest average high temperature	19.4 °C	2016
Coldest average high temperature	12.7 °C	1978
Most daily precipitation	5.9 cm	September 8, 1965
Most monthly precipitation	22.0 cm	1965

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	19.0	10.7	24.6	4.5
September 2	18.8	10.5	25.2	3.1
September 3	18.6	10.4	26.4	2.6
September 4	18.4	10.2	24.9	1.3
September 5	18.2	10.1	25.1	2.9
September 6	18.0	9.9	23.2	2.6
September 7	17.8	9.8	23.4	3.0
September 8	17.7	9.6	26.0	1.6
September 9	17.5	9.5	24.8	2.6
September 10	17.4	9.4	22.8	0.6
September 11	17.2	9.2	25.5	1.3
September 12	17.0	9.1	24.3	2.1
September 13	16.8	9.0	25.0	0.4
September 14	16.7	8.9	23.4	1.3
September 15	16.5	8.7	23.7	-1.0
September 16	16.3	8.6	22.2	-2.0
September 17	16.1	8.4	22.6	0.2
September 18	15.9	8.3	23.2	-1.0
September 19	15.6	8.1	21.1	0.3
September 20	15.4	8.0	21.6	0.6
September 21	15.2	7.8	22.5	1.1
September 22	15.0	7.7	21.2	-2.0
September 23	14.8	7.5	20.8	-0.8
September 24	14.6	7.4	20.8	-0.2
September 25	14.4	7.2	20.2	-0.5
September 26	14.2	7.1	20.4	-1.9
September 27	14.0	6.9	19.6	-3.3
September 28	13.8	6.8	20.9	-1.8
September 29	13.6	6.6	21.9	-0.6
September 30	13.4	6.4	21.0	-1.1

Weather Station Details

Years	Station	Coordinates
1937–2024	Oslo Blindern	location