Weather on August 20 in Helsinki
Historical weather data for August 20 in Helsinki, Finland
Based on 55 years of data from HELSINKI RAUTATIENTORI
About This Date
August 20th in Helsinki, Finland typically brings mild summer weather, with average highs around 20°C and lows near 13°C. Over 55 years of records, the warmest August 20th was in 2022 (23°C average), while the coldest was 1977 (10°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 20th dates historically, with the wettest August 20th recording 2.01" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 20th in Helsinki? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 18°C (64°F) | 9°C (49°F) | 0" |
| 2024 | 21°C (69°F) | 11°C (51°F) | 0" |
| 2023 | 19°C (67°F) | 14°C (58°F) | 0" |
| 2022 | 26°C (78°F) | 21°C (70°F) | 0" |
| 2021 | 18°C (64°F) | 14°C (58°F) | 0.02" |
| 2020 | 23°C (74°F) | 14°C (58°F) | 0" |
| 2019 | 21°C (69°F) | 15°C (59°F) | 0" |
| 2018 | 19°C (67°F) | 13°C (55°F) | 2.01" |
| 2017 | 21°C (69°F) | 17°C (62°F) | 0" |
| 2016 | 22°C (71°F) | 14°C (58°F) | 0" |
| 2015 | 22°C (72°F) | 13°C (56°F) | -- |
| 2014 | 17°C (63°F) | 12°C (54°F) | -- |
| 2013 | 19°C (67°F) | 14°C (58°F) | -- |
| 2012 | 18°C (65°F) | 12°C (53°F) | -- |
| 2011 | 22°C (72°F) | 17°C (63°F) | -- |
| 2010 | 21°C (69°F) | 13°C (55°F) | -- |
| 2009 | 18°C (65°F) | 8°C (47°F) | 0" |
| 2008 | 18°C (65°F) | 16°C (60°F) | 0.3" |
| 2007 | 21°C (69°F) | 12°C (53°F) | 0" |
| 2006 | 24°C (75°F) | 14°C (57°F) | 0" |
| 2005 | 22°C (72°F) | 12°C (54°F) | 0" |
| 2004 | 21°C (70°F) | 17°C (63°F) | 0" |
| 2003 | 21°C (69°F) | 16°C (61°F) | 0" |
| 2002 | 25°C (77°F) | 14°C (58°F) | 0" |
| 2001 | 21°C (70°F) | 11°C (51°F) | 0.01" |
| 2000 | 18°C (65°F) | 11°C (51°F) | 1.02" |
| 1999 | 19°C (67°F) | 13°C (55°F) | 0.57" |
| 1998 | 17°C (63°F) | 8°C (46°F) | 0.04" |
| 1997 | 22°C (71°F) | 14°C (58°F) | 0" |
| 1996 | 24°C (75°F) | 17°C (62°F) | 0" |
| 1995 | 21°C (70°F) | 11°C (51°F) | 0" |
| 1994 | 16°C (61°F) | 8°C (46°F) | 0.01" |
| 1993 | 18°C (64°F) | 12°C (53°F) | 0.09" |
| 1992 | 17°C (62°F) | 12°C (53°F) | 0.02" |
| 1991 | 21°C (69°F) | 12°C (54°F) | 0.24" |
| 1990 | 20°C (68°F) | 12°C (54°F) | 0" |
| 1989 | 19°C (66°F) | 11°C (51°F) | 0.03" |
| 1988 | 16°C (61°F) | 13°C (56°F) | 0.11" |
| 1987 | 19°C (66°F) | 14°C (58°F) | 0" |
| 1986 | 17°C (63°F) | 11°C (51°F) | 0" |
| 1985 | 22°C (71°F) | 15°C (59°F) | 0" |
| 1984 | 21°C (69°F) | 16°C (61°F) | 0" |
| 1983 | 19°C (66°F) | 8°C (47°F) | 0" |
| 1982 | 17°C (63°F) | 13°C (56°F) | 0.14" |
| 1981 | 18°C (64°F) | 13°C (55°F) | 0.46" |
| 1980 | 19°C (67°F) | 9°C (49°F) | 0.57" |
| 1979 | 21°C (69°F) | 17°C (62°F) | 0" |
| 1978 | 20°C (68°F) | 10°C (50°F) | 0" |
| 1977 | 14°C (58°F) | 6°C (42°F) | 0" |
| 1976 | 19°C (66°F) | 12°C (54°F) | 0" |
| 1975 | 21°C (69°F) | 9°C (49°F) | 0.05" |
| 1974 | 18°C (65°F) | 12°C (53°F) | 0" |
| 1973 | 18°C (65°F) | 13°C (55°F) | 0.24" |
| 1972 | 24°C (75°F) | 17°C (63°F) | 0.23" |
| 1971 | 20°C (68°F) | 13°C (55°F) | 0" |