Weather on June 21 in Helsinki
Historical weather data for June 21 in Helsinki, Finland
Based on 55 years of data from HELSINKI RAUTATIENTORI
About This Date
June 21st in Helsinki, Finland typically brings mild summer weather, with average highs around 19°C and lows near 12°C. Over 55 years of records, the warmest June 21st was in 2021 (25°C average), while the coldest was 2014 (10°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 36% of June 21st dates historically, with the wettest June 21st recording 2.31" of rain. The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Helsinki? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 17°C (63°F) | 10°C (50°F) | 0.5" |
| 2024 | 22°C (72°F) | 12°C (53°F) | 0" |
| 2023 | 28°C (83°F) | 16°C (61°F) | 0" |
| 2022 | 18°C (65°F) | 9°C (49°F) | 0" |
| 2021 | 30°C (86°F) | 19°C (67°F) | 0" |
| 2020 | 19°C (67°F) | 14°C (58°F) | 0" |
| 2019 | 24°C (76°F) | 17°C (63°F) | 0" |
| 2018 | 15°C (59°F) | 11°C (52°F) | 2.31" |
| 2017 | 18°C (64°F) | 10°C (50°F) | 0.44" |
| 2016 | 21°C (70°F) | 11°C (51°F) | 0" |
| 2015 | 16°C (61°F) | 9°C (48°F) | -- |
| 2014 | 13°C (56°F) | 7°C (44°F) | -- |
| 2013 | 22°C (72°F) | 16°C (61°F) | -- |
| 2012 | 22°C (72°F) | 11°C (52°F) | -- |
| 2011 | 18°C (65°F) | 13°C (55°F) | -- |
| 2010 | 16°C (60°F) | 12°C (54°F) | -- |
| 2009 | 18°C (65°F) | 8°C (47°F) | 0" |
| 2008 | 17°C (63°F) | 12°C (53°F) | 0" |
| 2007 | 19°C (66°F) | 12°C (53°F) | 0.16" |
| 2006 | 26°C (79°F) | 18°C (65°F) | 0.02" |
| 2005 | 20°C (68°F) | 9°C (49°F) | 0" |
| 2004 | 16°C (61°F) | 8°C (47°F) | 0" |
| 2003 | 19°C (66°F) | 12°C (53°F) | 0.04" |
| 2002 | 18°C (65°F) | 13°C (55°F) | 0.68" |
| 2001 | 14°C (58°F) | 12°C (54°F) | 0.01" |
| 2000 | 24°C (76°F) | 12°C (53°F) | 0" |
| 1999 | 22°C (71°F) | 17°C (62°F) | 0.02" |
| 1998 | 16°C (60°F) | 11°C (51°F) | 0.04" |
| 1997 | 22°C (71°F) | 11°C (51°F) | 0" |
| 1996 | 16°C (60°F) | 9°C (49°F) | 0.11" |
| 1995 | 21°C (69°F) | 12°C (53°F) | 0" |
| 1994 | 21°C (69°F) | 9°C (49°F) | 0" |
| 1993 | 21°C (70°F) | 11°C (51°F) | 0.25" |
| 1992 | 18°C (65°F) | 12°C (54°F) | 0.12" |
| 1991 | 17°C (62°F) | 12°C (54°F) | 0" |
| 1990 | 18°C (65°F) | 11°C (52°F) | 0" |
| 1989 | 26°C (79°F) | 14°C (57°F) | 0" |
| 1988 | 20°C (68°F) | 17°C (62°F) | 0.82" |
| 1987 | 20°C (68°F) | 11°C (51°F) | 0" |
| 1986 | 22°C (71°F) | 14°C (57°F) | 0" |
| 1985 | 24°C (75°F) | 14°C (57°F) | 0.29" |
| 1984 | 19°C (67°F) | 9°C (49°F) | 0" |
| 1983 | 18°C (65°F) | 8°C (47°F) | 0" |
| 1982 | 16°C (61°F) | 8°C (46°F) | 0.07" |
| 1981 | 17°C (62°F) | 9°C (49°F) | 0" |
| 1980 | 18°C (64°F) | 15°C (59°F) | 0.02" |
| 1979 | 19°C (66°F) | 12°C (53°F) | 0" |
| 1978 | 20°C (68°F) | 11°C (51°F) | 0" |
| 1977 | 16°C (60°F) | 8°C (46°F) | 0" |
| 1976 | 13°C (56°F) | 9°C (48°F) | 0.05" |
| 1975 | 24°C (75°F) | 12°C (53°F) | 0" |
| 1974 | 22°C (71°F) | 16°C (60°F) | 0.04" |
| 1973 | 21°C (69°F) | 9°C (49°F) | 0" |
| 1972 | 21°C (70°F) | 16°C (60°F) | 1.57" |
| 1971 | 19°C (67°F) | 11°C (52°F) | 0" |