Earliest and Latest Days of 20° C in Kotka

This is a list of the earliest and latest days in the year with a high temperature of at least 20 °C in Kotka, Finland history. It is based on NOAA data from the years 1959–2024.

Also see:

Earliest 20 degree day in Kotka?

The earliest in the year that Kotka, Finland had a high temperature of at least 20 °C is May 7 which happened in 2006.

Latest 20 degree day in Kotka?

The latest in the year that Kotka, Finland had a high temperature of at least 20 °C is September 12 which happened in 2023.

Earliest Days ≥ 20 °C

Date	Year	Temperature
May 7	2006	23.2 °C
May 8	2004	20.0 °C
May 9	2004	22.0 °C
May 9	2001	20.0 °C
May 11	1994	20.0 °C
May 12	2018	20.5 °C
May 13	2018	23.7 °C
May 13	1959	20.0 °C
May 14	2018	23.8 °C
May 14	1959	20.8 °C
May 15	2021	20.8 °C
May 15	2018	24.9 °C
May 15	1959	21.1 °C
May 16	2018	20.4 °C
May 16	1959	20.5 °C
May 17	2010	20.6 °C
May 17	1993	20.0 °C
May 18	1975	23.6 °C
May 19	2013	20.5 °C
May 19	1993	21.1 °C
May 19	1981	20.0 °C
May 19	1978	20.3 °C
May 19	1975	20.3 °C

Latest Days ≥ 20 °C

Date	Year	Temperature
September 12	2023	21.0 °C
September 11	2023	20.3 °C
September 11	1999	20.3 °C
September 10	2023	20.4 °C
September 10	2019	20.3 °C
September 10	2002	20.4 °C
September 10	1999	22.3 °C
September 9	2002	21.0 °C
September 9	1999	21.2 °C
September 8	2018	20.6 °C
September 8	2013	20.0 °C
September 8	2003	21.7 °C
September 8	1999	20.3 °C
September 7	2018	20.9 °C
September 7	2016	20.0 °C
September 7	2005	20.7 °C
September 7	1968	24.0 °C
September 7	1959	20.0 °C
September 6	2018	21.4 °C
September 6	1968	23.0 °C
September 6	1967	20.3 °C