Weather on December 31 in Helsinki
Historical weather data for December 31 in Helsinki, Finland
Based on 55 years of data from HELSINKI RAUTATIENTORI
About This Date
December 31st in Helsinki, Finland typically brings very cold winter weather, with average highs around -1°C and lows near -5°C. Over 55 years of records, the warmest December 31st was in 2016 (6°C average), while the coldest was 1978 (-23°C) — a 52°F range across recorded history. Rain or other precipitation has occurred on about 58% of December 31st dates historically, with the wettest December 31st recording 1.33" of rain. The last decade has been 10.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 10.5°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Helsinki? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | -7°C (20°F) | -11°C (12°F) | 0" |
| 2024 | 1°C (33°F) | -2°C (29°F) | 0.31" |
| 2023 | -6°C (22°F) | -14°C (6°F) | 0" |
| 2022 | 5°C (41°F) | 3°C (37°F) | 0.1" |
| 2021 | 3°C (37°F) | -2°C (29°F) | 0.03" |
| 2020 | 4°C (39°F) | 2°C (35°F) | 0.26" |
| 2019 | 6°C (42°F) | -1°C (30°F) | 0.01" |
| 2018 | 1°C (33°F) | -2°C (29°F) | 0.32" |
| 2017 | 3°C (38°F) | 1°C (34°F) | 0.31" |
| 2016 | 7°C (45°F) | 5°C (41°F) | 0" |
| 2015 | 2°C (35°F) | -3°C (26°F) | 0" |
| 2014 | 6°C (42°F) | 1°C (34°F) | -- |
| 2013 | 5°C (41°F) | 2°C (35°F) | -- |
| 2012 | 3°C (37°F) | 1°C (33°F) | -- |
| 2011 | 2°C (35°F) | -1°C (30°F) | -- |
| 2010 | -4°C (24°F) | -7°C (20°F) | -- |
| 2009 | -11°C (13°F) | -13°C (9°F) | -- |
| 2008 | 1°C (34°F) | -2°C (29°F) | 0" |
| 2007 | 4°C (40°F) | 2°C (35°F) | 0.31" |
| 2006 | 6°C (42°F) | 2°C (36°F) | 0.58" |
| 2005 | 3°C (37°F) | 0°C (32°F) | 0.78" |
| 2004 | 4°C (40°F) | 0°C (32°F) | 0" |
| 2003 | 1°C (33°F) | -4°C (25°F) | 0" |
| 2002 | -21°C (-6°F) | -23°C (-10°F) | 0.03" |
| 2001 | -11°C (13°F) | -20°C (-4°F) | 0.16" |
| 2000 | 2°C (35°F) | -1°C (30°F) | 0.66" |
| 1999 | -7°C (20°F) | -12°C (11°F) | 0.01" |
| 1998 | 1°C (34°F) | -3°C (26°F) | 0" |
| 1997 | -2°C (28°F) | -3°C (26°F) | 0" |
| 1996 | -7°C (20°F) | -16°C (4°F) | 0.02" |
| 1995 | -2°C (29°F) | -8°C (18°F) | 0.01" |
| 1994 | 3°C (38°F) | 1°C (33°F) | 0.47" |
| 1993 | 1°C (33°F) | -1°C (30°F) | 0.43" |
| 1992 | -3°C (27°F) | -10°C (14°F) | 0" |
| 1991 | 1°C (34°F) | -7°C (19°F) | 0" |
| 1990 | 2°C (36°F) | -1°C (30°F) | 0.01" |
| 1989 | -1°C (31°F) | -2°C (29°F) | 0" |
| 1988 | 2°C (36°F) | -4°C (25°F) | 0.01" |
| 1987 | -4°C (25°F) | -13°C (8°F) | 0" |
| 1986 | -9°C (15°F) | -14°C (6°F) | 0.01" |
| 1985 | -7°C (20°F) | -15°C (5°F) | 0.01" |
| 1984 | -3°C (27°F) | -4°C (24°F) | 0.04" |
| 1983 | 2°C (36°F) | -2°C (28°F) | 0.32" |
| 1982 | 2°C (36°F) | -5°C (23°F) | 0.18" |
| 1981 | 0°C (32°F) | -2°C (28°F) | 0.86" |
| 1980 | 3°C (38°F) | 0°C (32°F) | 1.33" |
| 1979 | 0°C (32°F) | -4°C (25°F) | 0.14" |
| 1978 | -17°C (2°F) | -29°C (-21°F) | 0" |
| 1977 | -1°C (30°F) | -9°C (15°F) | 0.01" |
| 1976 | -3°C (26°F) | -7°C (20°F) | 0.23" |
| 1975 | 6°C (43°F) | -2°C (29°F) | 0" |
| 1974 | -6°C (21°F) | -10°C (14°F) | 0.01" |
| 1973 | 3°C (37°F) | 0°C (32°F) | 0.01" |
| 1972 | 5°C (41°F) | 3°C (38°F) | 0" |
| 1971 | 1°C (34°F) | -1°C (31°F) | 0" |