Oslo climate — normals and trends

Q: What is the climate of Oslo?

Oslo has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.0 °C and it receives 940 mm of precipitation per year.

Q: What is the hottest day ever recorded in Oslo?

The hottest day measured in Oslo between 1940 and 2025 was 10 August 1975, reaching 33.1 °C.

Q: What is the coldest day in Oslo?

The coldest day measured in Oslo between 1940 and 2025 was 8 January 1982, at -29.0 °C.

Q: Does it snow in Oslo?

Yes. Oslo gets on average 185.0 cm of snow per year and has around 148 frost days.

Q: Has the climate of Oslo warmed?

Yes: Oslo warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Oslo?

The wettest day measured in Oslo between 1940 and 2025 was 31 July 1989, with 63 mm of rain in 24 hours.

Q: What was the windiest day in Oslo?

The windiest day measured in Oslo between 1940 and 2025 was 19 April 1980, with winds reaching 38.0 km/h.

Q: What is the warmest month in Oslo?

The warmest month in Oslo is July (16.3 °C on average); the coldest is January (-6.4 °C).

Q: How much does it rain in Oslo?

Oslo receives on average 940 mm of precipitation per year, spread over about 133 rainy days.

Q: Is it sunny in Oslo?

Oslo gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.

Oslo (Norway) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.0 °C and it receives 940 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is July (16.3 °C on average) and the coldest is January (-6.4 °C). Rainfall peaks in August.

Oslo averages 148 frost days, 0 hot days (≥ 30 °C) and 133 rainy days per year.

Oslo has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.

The number of frost days there went from about 169 to 127 per year over the period.

The hottest day of the period reached 33.1 °C (on 10 August 1975) and the coldest -29.0 °C (on 8 January 1982).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

OsloOslo

coords: 59.91°, 10.75°
period: 1940–2025 · 86 yrs

DfbWarm-summer humid continentalWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthFebruary

Mean daily temperature

5.0°C

Average daily high

8.3°C

Average daily low

1.5°C

Annual rainfall

940mm

Sunshine / day

7.5h

Mean relative humidity

79%

Average peak wind

13.7km/h

Seasonal range

22.7°C

Frost days (< 0 °C)

148 d/yr

Hot days (≥ 30 °C)

0 d/yr

Rainy days (≥ 1 mm)

133 d/yr

Annual snowfall

185.0 cm

Average feels-like high

5.5 °C

Average feels-like low

-1.5 °C

Average peak gust

31.6 km/h

Tropical nights (≥ 20 °C)

0 d/yr

Solar radiation

9.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.8 °C

since 1940

+0.3 °C per decade · r² = 0.43 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

33.1 °C

10 August 1975

Coldest day

-29.0 °C

8 January 1982

Wettest day

63 mm

31 July 1989

Windiest day

38.0 km/h

19 April 1980

Strongest gust

101.5 km/h

16 October 1987

Hottest feels-like

32.5 °C

26 July 2019

Coldest feels-like

-34.7 °C

11 January 1987

Snowiest day

23.5 cm

15 October 1976

Sunniest day

18.1 h

19 June 2018

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	30.3 °C20 July 2025	-20.9 °C5 January 2025	7.4 °C	1,050 mm	1	108
2024	26.2 °C27 June 2024	-25.2 °C6 January 2024	6.4 °C	1,175 mm	0	117
2023	29.2 °C15 June 2023	-17.9 °C22 January 2023	5.5 °C	1,216 mm	0	158
2022	27.6 °C15 August 2022	-17.5 °C16 December 2022	6.7 °C	834 mm	0	136
2021	28.9 °C3 July 2021	-20.1 °C14 February 2021	5.9 °C	846 mm	0	145
2020	29.3 °C27 June 2020	-10.1 °C5 February 2020	7.8 °C	1,174 mm	0	80
2019	30.5 °C26 July 2019	-17.4 °C29 January 2019	6.1 °C	1,232 mm	1	140
2018	32.2 °C27 July 2018	-17.8 °C18 March 2018	6.5 °C	808 mm	2	146
2017	25.0 °C27 May 2017	-15.7 °C17 December 2017	5.9 °C	980 mm	0	145
2016	27.3 °C3 June 2016	-20.0 °C22 January 2016	6.2 °C	836 mm	0	125
2015	26.9 °C5 July 2015	-14.7 °C5 February 2015	6.7 °C	1,076 mm	0	111
2014	31.5 °C23 July 2014	-17.2 °C26 December 2014	7.4 °C	1,222 mm	2	92
2013	27.3 °C20 July 2013	-20.7 °C23 January 2013	5.6 °C	862 mm	0	147
2012	27.7 °C25 May 2012	-22.8 °C4 February 2012	5.3 °C	1,059 mm	0	144
2011	25.8 °C28 July 2011	-21.7 °C20 February 2011	6.2 °C	1,114 mm	0	121
2010	25.3 °C10 July 2010	-22.7 °C8 January 2010	3.3 °C	850 mm	0	169
2009	31.0 °C28 June 2009	-20.5 °C30 December 2009	5.6 °C	1,100 mm	2	136
2008	30.7 °C28 July 2008	-20.8 °C23 March 2008	6.7 °C	1,077 mm	1	124
2007	28.9 °C8 June 2007	-19.7 °C11 February 2007	6.3 °C	954 mm	0	129
2006	28.9 °C27 July 2006	-19.2 °C12 February 2006	6.6 °C	1,069 mm	0	124
2005	29.9 °C11 July 2005	-17.7 °C13 March 2005	6.5 °C	791 mm	0	131
2004	28.4 °C10 August 2004	-21.3 °C22 January 2004	5.9 °C	965 mm	0	139
2003	28.6 °C15 July 2003	-23.4 °C6 January 2003	5.7 °C	850 mm	0	150
2002	26.7 °C1 August 2002	-27.3 °C31 December 2002	5.6 °C	894 mm	0	143
2001	28.7 °C7 July 2001	-26.6 °C5 February 2001	5.1 °C	889 mm	0	138
2000	25.2 °C14 May 2000	-18.1 °C24 January 2000	7.0 °C	1,283 mm	0	99
1999	26.9 °C11 July 1999	-19.6 °C11 February 1999	5.9 °C	1,049 mm	0	121
1998	22.8 °C21 June 1998	-16.0 °C8 March 1998	5.7 °C	966 mm	0	133
1997	28.1 °C13 August 1997	-22.2 °C4 January 1997	6.4 °C	768 mm	0	140
1996	25.8 °C21 August 1996	-21.1 °C20 December 1996	4.4 °C	818 mm	0	148
1995	28.2 °C25 June 1995	-20.8 °C30 January 1995	5.4 °C	858 mm	0	155
1994	29.5 °C8 July 1994	-21.8 °C14 February 1994	5.3 °C	854 mm	0	155
1993	24.4 °C10 June 1993	-21.2 °C14 December 1993	4.8 °C	823 mm	0	155
1992	26.7 °C1 June 1992	-17.8 °C23 December 1992	5.9 °C	846 mm	0	152
1991	30.2 °C7 July 1991	-19.3 °C16 January 1991	5.5 °C	744 mm	1	139
1990	28.2 °C27 July 1990	-16.4 °C21 December 1990	6.9 °C	938 mm	0	109
1989	29.0 °C25 July 1989	-15.5 °C15 December 1989	6.7 °C	821 mm	0	108
1988	31.2 °C27 June 1988	-18.4 °C2 December 1988	5.2 °C	1,192 mm	1	161
1987	28.3 °C22 July 1987	-28.6 °C11 January 1987	3.0 °C	1,087 mm	0	160
1986	28.4 °C1 July 1986	-26.0 °C10 January 1986	4.3 °C	921 mm	0	156
1985	24.5 °C6 July 1985	-28.7 °C10 February 1985	2.9 °C	1,052 mm	0	177
1984	24.8 °C23 May 1984	-20.6 °C10 January 1984	5.5 °C	1,012 mm	0	135
1983	29.0 °C10 July 1983	-19.8 °C9 February 1983	5.9 °C	746 mm	0	141
1982	31.7 °C3 August 1982	-29.0 °C8 January 1982	5.0 °C	1,009 mm	4	147
1981	24.7 °C11 May 1981	-26.3 °C14 December 1981	3.9 °C	773 mm	0	178
1980	27.8 °C5 June 1980	-27.0 °C3 February 1980	3.9 °C	824 mm	0	179
1979	25.4 °C6 June 1979	-27.3 °C1 January 1979	3.3 °C	963 mm	0	176
1978	26.8 °C1 August 1978	-25.3 °C31 December 1978	4.1 °C	837 mm	0	157
1977	28.3 °C15 June 1977	-22.2 °C31 January 1977	4.6 °C	955 mm	0	149
1976	27.8 °C6 July 1976	-23.9 °C29 December 1976	4.6 °C	805 mm	0	158
1975	33.1 °C10 August 1975	-18.2 °C16 February 1975	6.1 °C	749 mm	7	146
1974	26.1 °C17 June 1974	-15.7 °C13 December 1974	5.8 °C	1,064 mm	0	149
1973	27.4 °C7 July 1973	-18.5 °C9 December 1973	5.1 °C	877 mm	0	165
1972	28.0 °C19 July 1972	-16.2 °C29 January 1972	5.1 °C	1,120 mm	0	147
1971	27.4 °C8 July 1971	-22.6 °C6 January 1971	5.1 °C	905 mm	0	154
1970	31.1 °C19 June 1970	-27.1 °C17 February 1970	3.5 °C	945 mm	2	169
1969	28.1 °C2 August 1969	-24.7 °C14 February 1969	4.5 °C	797 mm	0	161
1968	26.4 °C14 June 1968	-23.5 °C7 January 1968	4.0 °C	832 mm	0	174
1967	23.9 °C16 June 1967	-20.9 °C27 December 1967	4.9 °C	1,087 mm	0	146
1966	27.0 °C17 June 1966	-27.5 °C9 February 1966	2.8 °C	1,058 mm	0	181
1965	22.6 °C19 July 1965	-24.0 °C14 December 1965	2.8 °C	1,055 mm	0	165
1964	23.0 °C14 June 1964	-24.1 °C28 December 1964	3.5 °C	933 mm	0	161
1963	25.7 °C4 July 1963	-26.0 °C17 January 1963	2.5 °C	1,019 mm	0	161
1962	21.5 °C7 June 1962	-22.5 °C31 December 1962	2.6 °C	941 mm	0	176
1961	23.8 °C4 June 1961	-25.1 °C27 December 1961	4.5 °C	992 mm	0	149
1960	27.5 °C25 June 1960	-19.0 °C24 February 1960	4.7 °C	1,213 mm	0	145
1959	27.7 °C26 June 1959	-21.3 °C15 January 1959	5.7 °C	916 mm	0	130
1958	27.4 °C1 July 1958	-24.7 °C27 February 1958	4.0 °C	865 mm	0	169
1957	25.9 °C17 June 1957	-22.0 °C15 January 1957	4.8 °C	913 mm	0	159
1956	24.8 °C10 June 1956	-26.9 °C1 February 1956	2.8 °C	788 mm	0	182
1955	29.1 °C10 July 1955	-25.3 °C20 December 1955	4.5 °C	575 mm	0	169
1954	25.8 °C29 May 1954	-22.0 °C23 January 1954	4.5 °C	1,122 mm	0	153
1953	27.8 °C29 June 1953	-22.8 °C8 February 1953	5.9 °C	997 mm	0	123
1952	27.6 °C7 July 1952	-20.3 °C24 January 1952	4.0 °C	812 mm	0	159
1951	23.0 °C4 August 1951	-15.6 °C10 January 1951	5.1 °C	1,163 mm	0	144
1950	24.9 °C7 June 1950	-23.6 °C6 January 1950	4.1 °C	1,100 mm	0	161
1949	26.0 °C23 July 1949	-16.9 °C10 January 1949	6.0 °C	998 mm	0	150
1948	27.4 °C31 July 1948	-23.7 °C1 January 1948	4.1 °C	938 mm	0	169
1947	26.9 °C28 June 1947	-25.4 °C6 February 1947	3.4 °C	489 mm	0	168
1946	24.1 °C29 May 1946	-21.0 °C16 January 1946	4.2 °C	949 mm	0	158
1945	25.0 °C16 July 1945	-18.9 °C2 February 1945	4.5 °C	819 mm	0	155
1944	25.5 °C9 July 1944	-18.3 °C11 January 1944	4.3 °C	1,038 mm	0	171
1943	24.5 °C1 July 1943	-24.4 °C10 January 1943	5.2 °C	795 mm	0	145
1942	22.9 °C6 July 1942	-25.3 °C26 January 1942	2.5 °C	754 mm	0	168
1941	30.4 °C11 July 1941	-26.6 °C3 January 1941	3.3 °C	669 mm	1	186
1940	28.3 °C12 July 1940	-26.8 °C3 February 1940	3.1 °C	722 mm	0	179

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

11.0 °C

+2.7 °C

Hot days (≥ 30 °C)

1 d/yr

Frost days (< 0 °C)

108 d/yr

-40

Annual rainfall

1050 mm

+110 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	-1.2 °C	+2.8 °C	101 mm	+37 mm
Feb	-0.1 °C	+2.4 °C	34 mm	-15 mm
Mar	7.6 °C	+5.1 °C	12 mm	-39 mm
Apr	13.3 °C	+5.3 °C	32 mm	-22 mm
May	16.3 °C	+1.9 °C	41 mm	-32 mm
Jun	18.6 °C	+0.1 °C	99 mm	+10 mm
Jul	23.8 °C	+3.5 °C	132 mm	+29 mm
Aug	19.6 °C	+0.7 °C	93 mm	-18 mm
Sep	16.0 °C	+1.6 °C	170 mm	+79 mm
Oct	9.7 °C	+1.3 °C	152 mm	+58 mm
Nov	4.8 °C	+2.4 °C	80 mm	-10 mm
Dec	3.2 °C	+5.0 °C	104 mm	+33 mm

The year's extremes

Hottest day

30.3 °C

20 Jul 2025

Coldest day

-20.9 °C

5 Jan 2025

Wettest day

44.2 mm

4 Oct 2025

Windiest day

34.7 km/h

4 Oct 2025

Strongest gust

79.2 km/h

5 Aug 2025

Hottest feels-like

30.2 °C

17 Jul 2025

Coldest feels-like

-25.8 °C

5 Jan 2025

Snowiest day

21.6 cm

7 Jan 2025

Sunniest day

18.0 h

29 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Oslo?

Oslo has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.0 °C and it receives 940 mm of precipitation per year.

What is the hottest day ever recorded in Oslo?

The hottest day measured in Oslo between 1940 and 2025 was 10 August 1975, reaching 33.1 °C.

What is the coldest day in Oslo?

The coldest day measured in Oslo between 1940 and 2025 was 8 January 1982, at -29.0 °C.

Does it snow in Oslo?

Yes. Oslo gets on average 185.0 cm of snow per year and has around 148 frost days.

Has the climate of Oslo warmed?

Yes: Oslo warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Oslo?

The wettest day measured in Oslo between 1940 and 2025 was 31 July 1989, with 63 mm of rain in 24 hours.

What was the windiest day in Oslo?

The windiest day measured in Oslo between 1940 and 2025 was 19 April 1980, with winds reaching 38.0 km/h.

What is the warmest month in Oslo?

The warmest month in Oslo is July (16.3 °C on average); the coldest is January (-6.4 °C).

How much does it rain in Oslo?

Oslo receives on average 940 mm of precipitation per year, spread over about 133 rainy days.

Is it sunny in Oslo?

Oslo gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.

What is the biggest single-day snowfall in Oslo?

The heaviest 24-hour snowfall measured in Oslo between 1940 and 2025 was 15 October 1976, with 23.5 cm.

Are there tropical nights in Oslo?

Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Oslo.

What was the most extreme apparent temperature in Oslo?

In Oslo, between 1940 and 2025, the highest apparent temperature reached 32.5 °C on 26 July 2019, and the lowest was -34.7 °C on 11 January 1987.

Nearby cities

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