Oslo Weather Records

Oslo, Norway weather averages and records from 1937–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Oslo, Norway was 34.6 °C which occurred on July 27, 2018.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Oslo, Norway was -26.0 °C which occurred on January 19, 1941.
Lowest Temperatures: All-Time By Year
Oslo Weather by Month
Averages based on the years 1991–2020
Month Average (°C) Record (°C) Average (cm)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 0.1 -4.7 12.5 -26.0 5.8
February 1.1 -4.7 13.8 -24.9 4.6
March 5.3 -2.1 21.5 -21.3 4.2
April 11.0 2.1 25.4 -14.9 4.8
May 16.7 6.8 31.1 -3.4 5.9
June 20.4 10.8 33.7 1.4 8.0
July 22.7 13.4 34.6 3.7 8.7
August 21.3 12.5 34.2 3.7 10.3
September 16.4 8.6 26.4 -3.3 8.3
October 9.6 3.8 21.0 -8.0 9.4
November 4.4 0.0 16.1 -16.0 8.3
December 0.9 -3.7 12.6 -20.8 5.3
Entire year 10.9 3.6 34.6 -26.0 83.6
More Oslo Weather Records
1937–2024
Highest daily low 21.7 °C July 28, 2018
Lowest daily high -20.5 °C January 10, 1987
Greatest daily range
(Difference of high and low)
20.4 °C June 2, 1939
Greatest difference in daily high
over two conscutive days
17.8 °C Jan 3–4, 1946
Most daily precipitation 7.3 cm June 26, 2014
Most monthly precipitation 30.5 cm August 1951
Most yearly precipitation 117.0 cm 2000
Most yearly days with precipitation 217 2017
Earliest freeze September 15 1938
Earliest day ≥ 20 °C March 26 2017
Earliest day ≥ 25 °C April 27 1993
Earliest day ≥ 30 °C May 30 2018
Latest freeze May 19 1967
Latest day ≥ 20 °C October 9 1969
Latest day ≥ 25 °C September 13 2002
Latest day ≥ 30 °C August 26 1947
Most days in a year < 0 °C 176 1941
Most days in a year ≥ 20 °C 106 1947
Most days in a year ≥ 25 °C 62 1947
Most days in a year ≥ 30 °C 13 2018
Oslo Weather Streaks
Most consecutive days...
With precipitation 27 days Jan 11 – Feb 6, 1988
Without precipitation 43 days Mar 22 – May 3, 1974
Freezing temperatures
High temperature ≤ 0 °C
58 days Dec 28, 1984 – Feb 23, 1985
High temperature ≥ 20 °C 58 days Jul 12 – Sep 7, 1947
High temperature ≥ 25 °C 23 days Jul 10 – Aug 1, 2018
High temperature ≥ 30 °C 8 days Jul 31 – Aug 7, 1982
Plant Hardiness Zone
7A
Oslo is in plant hardiness zone 7A
based on average yearly minimum temperature from 1991–2020
Oslo Weather by Year
More Oslo Weather
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Weather Station Details
Years Station Coordinates
1937–2024 Oslo Blindern location