Weather on April 21 in Helsinki
Historical weather data for April 21 in Helsinki, Finland
Based on 56 years of data from HELSINKI RAUTATIENTORI
About This Date
April 21st in Helsinki, Finland typically brings chilly spring weather, with average highs around 9°C and lows near 2°C. Over 56 years of records, the warmest April 21st was in 2000 (12°C average), while the coldest was 1987 (-1°C) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 25% of April 21st dates historically, with the wettest April 21st recording 0.61" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Helsinki? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 16°C (60°F) | 3°C (38°F) | 0 mm |
| 2025 | 7°C (45°F) | 5°C (41°F) | 1 mm |
| 2024 | 3°C (37°F) | -2°C (28°F) | 0 mm |
| 2023 | 16°C (60°F) | 6°C (43°F) | 0 mm |
| 2022 | 14°C (58°F) | 6°C (42°F) | 0 mm |
| 2021 | 11°C (52°F) | 3°C (38°F) | 0 mm |
| 2020 | 16°C (60°F) | 5°C (41°F) | 0 mm |
| 2019 | 9°C (49°F) | 4°C (39°F) | 0 mm |
| 2018 | 14°C (57°F) | 6°C (42°F) | 0 mm |
| 2017 | 11°C (52°F) | 2°C (35°F) | 0 mm |
| 2016 | 10°C (50°F) | 2°C (35°F) | 0 mm |
| 2015 | 12°C (54°F) | 4°C (40°F) | -- |
| 2014 | 14°C (57°F) | 7°C (44°F) | -- |
| 2013 | 9°C (48°F) | 1°C (33°F) | -- |
| 2012 | 8°C (46°F) | 4°C (39°F) | -- |
| 2011 | 11°C (52°F) | 2°C (35°F) | 0 mm |
| 2010 | 9°C (48°F) | 2°C (35°F) | -- |
| 2009 | 4°C (39°F) | -3°C (26°F) | 0 mm |
| 2008 | 11°C (52°F) | -1°C (31°F) | 0 mm |
| 2007 | 6°C (43°F) | 2°C (35°F) | 1 mm |
| 2006 | 11°C (52°F) | 2°C (35°F) | 0 mm |
| 2005 | 3°C (38°F) | -2°C (28°F) | 3 mm |
| 2004 | 13°C (56°F) | 8°C (46°F) | 3 mm |
| 2003 | 18°C (65°F) | 3°C (38°F) | 0 mm |
| 2002 | 13°C (55°F) | 1°C (33°F) | 0 mm |
| 2001 | 5°C (41°F) | -1°C (31°F) | 5 mm |
| 2000 | 16°C (60°F) | 8°C (46°F) | 0 mm |
| 1999 | 13°C (55°F) | 7°C (44°F) | 0 mm |
| 1998 | 9°C (49°F) | 4°C (39°F) | 0 mm |
| 1997 | 6°C (42°F) | -3°C (27°F) | 0 mm |
| 1996 | 11°C (51°F) | 1°C (33°F) | 0 mm |
| 1995 | 14°C (57°F) | 3°C (38°F) | 0 mm |
| 1994 | 8°C (46°F) | 1°C (34°F) | 0 mm |
| 1993 | 4°C (39°F) | -4°C (25°F) | 5 mm |
| 1992 | 4°C (39°F) | -2°C (29°F) | 0 mm |
| 1991 | 4°C (39°F) | -4°C (25°F) | 0 mm |
| 1990 | 14°C (58°F) | 7°C (45°F) | 0 mm |
| 1989 | 10°C (50°F) | 4°C (40°F) | 0 mm |
| 1988 | 8°C (46°F) | 1°C (33°F) | 2 mm |
| 1987 | 3°C (37°F) | -4°C (25°F) | 0 mm |
| 1986 | 4°C (39°F) | 2°C (35°F) | 15 mm |
| 1985 | 7°C (44°F) | 1°C (34°F) | 0 mm |
| 1984 | 7°C (44°F) | 3°C (37°F) | 0 mm |
| 1983 | 10°C (50°F) | 5°C (41°F) | 0 mm |
| 1982 | 6°C (43°F) | 1°C (33°F) | 0 mm |
| 1981 | 5°C (41°F) | -2°C (29°F) | 1 mm |
| 1980 | 4°C (40°F) | 1°C (33°F) | 0 mm |
| 1979 | 6°C (42°F) | -2°C (28°F) | 0 mm |
| 1978 | 10°C (50°F) | 3°C (37°F) | 0 mm |
| 1977 | 3°C (37°F) | 0°C (32°F) | 3 mm |
| 1976 | 6°C (43°F) | -1°C (31°F) | 2 mm |
| 1975 | 9°C (48°F) | 4°C (40°F) | 1 mm |
| 1974 | 8°C (47°F) | -1°C (30°F) | 0 mm |
| 1973 | 10°C (50°F) | 2°C (36°F) | 0 mm |
| 1972 | 6°C (43°F) | 1°C (33°F) | 1 mm |
| 1971 | 10°C (50°F) | 1°C (33°F) | 0 mm |