Earliest and Latest Days of 25° C in Oslo

This is a list of the earliest and latest days in the year with a high temperature of at least 25 °C in Oslo, Norway history. It is based on NOAA data from the years 1937–2024.

Also see:

Earliest 25 degree day in Oslo?

The earliest in the year that Oslo, Norway had a high temperature of at least 25 °C is April 27 which happened in 1993.

Latest 25 degree day in Oslo?

The latest in the year that Oslo, Norway had a high temperature of at least 25 °C is September 13 which happened in 2002.

Earliest Days ≥ 25 °C

Date	Year	Temperature
April 27	1993	25.1 °C
April 29	2000	25.4 °C
May 3	1990	26.2 °C
May 4	1990	25.7 °C
May 5	1977	25.2 °C
May 9	2016	25.0 °C
May 9	2006	25.2 °C
May 10	2016	25.3 °C
May 10	1950	25.4 °C
May 10	1947	25.8 °C
May 12	1950	25.2 °C
May 12	1947	25.9 °C
May 14	2018	25.8 °C
May 14	2000	25.1 °C
May 15	2018	27.3 °C
May 15	2000	25.8 °C
May 16	2018	27.8 °C
May 16	1947	26.9 °C
May 17	1980	25.7 °C
May 18	2013	26.8 °C
May 18	1980	25.4 °C
May 18	1948	26.9 °C

Latest Days ≥ 25 °C

Date	Year	Temperature
September 13	2002	25.0 °C
September 11	1959	25.5 °C
September 8	2021	26.0 °C
September 5	2023	25.1 °C
September 3	1991	26.4 °C
September 3	1959	25.3 °C
September 2	2021	25.2 °C
August 31	1983	25.3 °C
August 30	2021	25.2 °C
August 30	1955	25.4 °C
August 30	1947	25.1 °C
August 29	2021	25.3 °C
August 29	1997	25.1 °C
August 29	1976	26.4 °C
August 29	1955	25.7 °C
August 29	1947	25.4 °C
August 28	1955	27.9 °C
August 28	1947	26.4 °C
August 27	2019	26.8 °C
August 27	1968	26.9 °C
August 27	1955	27.2 °C
August 27	1947	27.8 °C
August 27	1937	27.2 °C