Weather on October 18 in Helsinki
Historical weather data for October 18 in Helsinki, Finland
Based on 55 years of data from HELSINKI RAUTATIENTORI
About This Date
October 18th in Helsinki, Finland typically brings chilly fall weather, with average highs around 8°C and lows near 4°C. Over 55 years of records, the warmest October 18th was in 2018 (12°C average), while the coldest was 1982 (-2°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 44% of October 18th dates historically, with the wettest October 18th recording 1.23" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for October 18th in Helsinki? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 8°C (47°F) | -1°C (30°F) | 0 mm |
| 2024 | 12°C (54°F) | 10°C (50°F) | 0 mm |
| 2023 | 4°C (39°F) | 1°C (33°F) | 0 mm |
| 2022 | 11°C (51°F) | 7°C (45°F) | 4 mm |
| 2021 | 7°C (45°F) | 3°C (38°F) | 0 mm |
| 2020 | 9°C (49°F) | 3°C (37°F) | 0 mm |
| 2019 | 11°C (51°F) | 5°C (41°F) | 8 mm |
| 2018 | 13°C (56°F) | 11°C (51°F) | 14 mm |
| 2017 | 12°C (54°F) | 7°C (45°F) | 0 mm |
| 2016 | 8°C (46°F) | 6°C (42°F) | 0 mm |
| 2015 | 11°C (51°F) | 5°C (41°F) | 0 mm |
| 2014 | 4°C (40°F) | -2°C (29°F) | -- |
| 2013 | 9°C (49°F) | 2°C (35°F) | -- |
| 2012 | 12°C (53°F) | 9°C (48°F) | -- |
| 2011 | 11°C (51°F) | 8°C (47°F) | -- |
| 2010 | 9°C (49°F) | 6°C (42°F) | -- |
| 2009 | 3°C (38°F) | 1°C (34°F) | 6 mm |
| 2008 | 11°C (51°F) | 5°C (41°F) | 3 mm |
| 2007 | 10°C (50°F) | 4°C (40°F) | 4 mm |
| 2006 | 11°C (51°F) | 3°C (37°F) | 0 mm |
| 2005 | 10°C (50°F) | 2°C (36°F) | 0 mm |
| 2004 | 9°C (49°F) | 8°C (46°F) | 12 mm |
| 2003 | 8°C (46°F) | 0°C (32°F) | 1 mm |
| 2002 | -1°C (31°F) | -2°C (28°F) | 0 mm |
| 2001 | 11°C (52°F) | 8°C (46°F) | 0 mm |
| 2000 | 11°C (51°F) | 8°C (46°F) | 0 mm |
| 1999 | 6°C (42°F) | -2°C (28°F) | 0 mm |
| 1998 | 12°C (53°F) | 6°C (42°F) | 7 mm |
| 1997 | 9°C (48°F) | 4°C (40°F) | 25 mm |
| 1996 | 7°C (45°F) | 6°C (42°F) | 31 mm |
| 1995 | 12°C (53°F) | 8°C (47°F) | 11 mm |
| 1994 | 4°C (39°F) | -2°C (29°F) | 0 mm |
| 1993 | 6°C (43°F) | -1°C (30°F) | 0 mm |
| 1992 | 4°C (40°F) | 0°C (32°F) | 0 mm |
| 1991 | 12°C (53°F) | 8°C (46°F) | 12 mm |
| 1990 | 9°C (49°F) | 7°C (44°F) | 1 mm |
| 1989 | 6°C (42°F) | 1°C (33°F) | 2 mm |
| 1988 | 9°C (49°F) | 2°C (35°F) | 0 mm |
| 1987 | 11°C (51°F) | 8°C (47°F) | 0 mm |
| 1986 | 9°C (48°F) | 2°C (35°F) | 0 mm |
| 1985 | 8°C (46°F) | 3°C (37°F) | 0 mm |
| 1984 | 11°C (51°F) | 4°C (40°F) | 2 mm |
| 1983 | 11°C (51°F) | 8°C (47°F) | 23 mm |
| 1982 | 1°C (34°F) | -4°C (24°F) | 0 mm |
| 1981 | 5°C (41°F) | 2°C (35°F) | 0 mm |
| 1980 | 13°C (55°F) | 6°C (42°F) | 3 mm |
| 1979 | 6°C (43°F) | 2°C (36°F) | 5 mm |
| 1978 | 10°C (50°F) | 7°C (44°F) | 0 mm |
| 1977 | 11°C (51°F) | 6°C (43°F) | 0 mm |
| 1976 | 2°C (36°F) | -1°C (30°F) | 0 mm |
| 1975 | 11°C (51°F) | 2°C (36°F) | 0 mm |
| 1974 | 6°C (42°F) | 3°C (38°F) | 0 mm |
| 1973 | 3°C (37°F) | -3°C (27°F) | 0 mm |
| 1972 | 6°C (42°F) | -1°C (31°F) | 0 mm |
| 1971 | 8°C (47°F) | 5°C (41°F) | 10 mm |