Weather on September 30 in Helsinki
Historical weather data for September 30 in Helsinki, Finland
Based on 55 years of data from HELSINKI RAUTATIENTORI
About This Date
September 30th in Helsinki, Finland typically brings cool fall weather, with average highs around 12°C and lows near 7°C. Over 55 years of records, the warmest September 30th was in 2011 (17°C average), while the coldest was 1976 (2°C) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 30th dates historically, with the wettest September 30th recording 1.42" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for September 30th 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 | 11°C (52°F) | 5°C (41°F) | 0 mm |
| 2024 | 13°C (56°F) | 3°C (38°F) | 0 mm |
| 2023 | 18°C (64°F) | 13°C (56°F) | 5 mm |
| 2022 | 12°C (54°F) | 7°C (44°F) | 7 mm |
| 2021 | 11°C (51°F) | 9°C (49°F) | 3 mm |
| 2020 | 16°C (60°F) | 12°C (54°F) | 0 mm |
| 2019 | 14°C (58°F) | 12°C (53°F) | 20 mm |
| 2018 | 13°C (55°F) | 8°C (46°F) | 0 mm |
| 2017 | 11°C (51°F) | 8°C (46°F) | 0 mm |
| 2016 | 16°C (60°F) | 13°C (55°F) | 0 mm |
| 2015 | 17°C (62°F) | 9°C (49°F) | 0 mm |
| 2014 | 13°C (55°F) | 8°C (46°F) | -- |
| 2013 | 7°C (45°F) | 2°C (35°F) | -- |
| 2012 | 14°C (58°F) | 11°C (51°F) | -- |
| 2011 | 22°C (71°F) | 13°C (55°F) | -- |
| 2010 | 13°C (55°F) | 7°C (45°F) | -- |
| 2009 | 10°C (50°F) | 3°C (37°F) | 0 mm |
| 2008 | 13°C (55°F) | 2°C (36°F) | 1 mm |
| 2007 | 17°C (62°F) | 13°C (55°F) | 15 mm |
| 2006 | 14°C (58°F) | 10°C (50°F) | 15 mm |
| 2005 | 14°C (57°F) | 6°C (42°F) | 0 mm |
| 2004 | 12°C (54°F) | 7°C (45°F) | 0 mm |
| 2003 | 9°C (49°F) | 7°C (45°F) | 27 mm |
| 2002 | 14°C (58°F) | 7°C (45°F) | 1 mm |
| 2001 | 11°C (52°F) | -1°C (31°F) | 0 mm |
| 2000 | 16°C (60°F) | 10°C (50°F) | 0 mm |
| 1999 | 14°C (58°F) | 11°C (51°F) | 12 mm |
| 1998 | 8°C (47°F) | 1°C (34°F) | 0 mm |
| 1997 | 11°C (51°F) | 4°C (40°F) | 0 mm |
| 1996 | 11°C (52°F) | 7°C (45°F) | 14 mm |
| 1995 | 10°C (50°F) | 8°C (46°F) | 3 mm |
| 1994 | 11°C (52°F) | 7°C (45°F) | 27 mm |
| 1993 | 8°C (46°F) | -3°C (26°F) | 0 mm |
| 1992 | 12°C (54°F) | 9°C (49°F) | 0 mm |
| 1991 | 12°C (54°F) | 7°C (44°F) | 14 mm |
| 1990 | 9°C (49°F) | 4°C (40°F) | 2 mm |
| 1989 | 9°C (48°F) | 4°C (40°F) | 2 mm |
| 1988 | 12°C (54°F) | 9°C (49°F) | 0 mm |
| 1987 | 11°C (52°F) | 4°C (39°F) | 0 mm |
| 1986 | 9°C (48°F) | 2°C (35°F) | 0 mm |
| 1985 | 8°C (46°F) | 4°C (40°F) | 22 mm |
| 1984 | 10°C (50°F) | 7°C (44°F) | 8 mm |
| 1983 | 8°C (47°F) | 2°C (36°F) | 0 mm |
| 1982 | 13°C (55°F) | 7°C (45°F) | 0 mm |
| 1981 | 17°C (62°F) | 11°C (52°F) | 1 mm |
| 1980 | 11°C (52°F) | 6°C (43°F) | 7 mm |
| 1979 | 10°C (50°F) | 3°C (38°F) | 1 mm |
| 1978 | 6°C (43°F) | 0°C (32°F) | 0 mm |
| 1977 | 10°C (50°F) | 6°C (43°F) | 36 mm |
| 1976 | 8°C (46°F) | -3°C (26°F) | 0 mm |
| 1975 | 13°C (56°F) | 4°C (39°F) | 0 mm |
| 1974 | 14°C (58°F) | 11°C (52°F) | 3 mm |
| 1973 | 11°C (52°F) | 9°C (49°F) | 23 mm |
| 1972 | 8°C (47°F) | 2°C (35°F) | 0 mm |
| 1971 | 13°C (55°F) | 4°C (39°F) | 3 mm |