Helsinki's average temperature over the last 30 years is around 6.1°C. Jul is typically the hottest month and Feb the coldest, with total annual rainfall averaging about 707 mm.
| Year | Max Temp | Min Temp | Precipitation |
|---|---|---|---|
| 2025 | 29°C | -14°C | 840 mm |
| 2024 | 25°C | -26°C | 804 mm |
| 2023 | 26°C | -17°C | 857 mm |
| 2022 | 27°C | -17°C | 737 mm |
| 2021 | 30°C | -22°C | 777 mm |
| 2020 | 27°C | -8°C | 949 mm |
| 2019 | 31°C | -20°C | 832 mm |
| 2018 | 28°C | -21°C | 581 mm |
| 2017 | 23°C | -20°C | 922 mm |
| 2016 | 24°C | -25°C | 664 mm |
| 2015 | 25°C | -14°C | 689 mm |
| 2014 | 29°C | -15°C | 664 mm |
| 2013 | 26°C | -20°C | 583 mm |
| 2012 | 26°C | -22°C | 883 mm |
| 2011 | 28°C | -25°C | 704 mm |
| 2010 | 30°C | -21°C | 602 mm |
| 2009 | 25°C | -16°C | 585 mm |
| 2008 | 25°C | -10°C | 800 mm |
| 2007 | 26°C | -25°C | 710 mm |
| 2006 | 28°C | -22°C | 544 mm |
| 2005 | 27°C | -18°C | 624 mm |
| 2004 | 25°C | -19°C | 786 mm |
| 2003 | 28°C | -24°C | 566 mm |
| 2002 | 27°C | -23°C | 502 mm |
| 2001 | 26°C | -22°C | 650 mm |
| 2000 | 24°C | -16°C | 707 mm |
| 1999 | 28°C | -26°C | 606 mm |
| 1998 | 25°C | -21°C | 800 mm |
| 1997 | 27°C | -18°C | 558 mm |
| 1996 | 24°C | -22°C | 653 mm |
| Month | Avg High | Avg Low | Rainfall |
|---|---|---|---|
| Jan | -2°C | -6°C | 54 mm |
| Feb | -2°C | -7°C | 46 mm |
| Mar | 1°C | -5°C | 37 mm |
| Apr | 7°C | 0°C | 39 mm |
| May | 13°C | 6°C | 47 mm |
| Jun | 18°C | 11°C | 71 mm |
| Jul | 21°C | 15°C | 80 mm |
| Aug | 20°C | 14°C | 79 mm |
| Sep | 15°C | 10°C | 60 mm |
| Oct | 9°C | 5°C | 68 mm |
| Nov | 4°C | 1°C | 65 mm |
| Dec | 0°C | -3°C | 61 mm |