| Month | Average (°C) | Record (°C) | Average (cm) | ||
|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | |
| January | -3.1 | -8.6 | 7.7 | -37.4 | 4.9 |
| February | -3.0 | -9.5 | 9.7 | -36.2 | 3.7 |
| March | 1.6 | -6.2 | 15.9 | -29.1 | 3.4 |
| April | 8.5 | -1.0 | 23.7 | -16.5 | 3.2 |
| May | 15.5 | 3.9 | 29.0 | -10.7 | 4.1 |
| June | 19.5 | 8.8 | 31.8 | -2.0 | 6.4 |
| July | 22.1 | 11.6 | 33.2 | 0.9 | 7.9 |
| August | 20.5 | 10.5 | 32.6 | -0.8 | 7.2 |
| September | 14.8 | 6.5 | 26.1 | -6.0 | 5.4 |
| October | 7.5 | 1.9 | 19.2 | -15.7 | 6.6 |
| November | 2.2 | -1.9 | 12.8 | -22.1 | 5.8 |
| December | -1.0 | -5.6 | 10.2 | -34.2 | 5.3 |
| Entire year | 8.8 | 0.9 | 33.2 | -37.4 | 63.8 |
|
More Hämeenlinna Weather Records
1963–2024
|
||
|---|---|---|
| Highest daily low | 21.6 °C | July 11, 2021 |
| Lowest daily high | -33.2 °C | January 9, 1987 |
| Greatest daily range (Difference of high and low) |
32.8 °C | December 10, 1973 |
| Greatest difference in daily high over two conscutive days |
26.8 °C | Dec 9–10, 1973 |
| Most daily precipitation | 5.8 cm | August 30, 1969 |
| Most monthly precipitation | 20.3 cm | July 2004 |
| Most yearly precipitation | 85.1 cm | 1981 |
| Most yearly days with precipitation | 230 | 2012 |
| Earliest freeze | August 25 | 1987 |
| Earliest day ≥ 20 °C | April 15 | 2007 |
| Earliest day ≥ 25 °C | May 6 | 2004 |
| Earliest day ≥ 30 °C | June 10 | 2011 |
| Latest freeze | June 18 | 1978 |
| Latest day ≥ 20 °C | September 30 | 2011 |
| Latest day ≥ 25 °C | September 6 | 1968 |
| Latest day ≥ 30 °C | August 11 | 1992 |
| Most days in a year < 0 °C | 200 | 1976 |
| Most days in a year ≥ 20 °C | 95 | 2002 |
| Most days in a year ≥ 25 °C | 39 | 2018 |
| Most days in a year ≥ 30 °C | 7 | 2021 |
|
Hämeenlinna Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 31 days | Dec 2, 1974 – Jan 1, 1975 |
| Without precipitation | 29 days | Apr 21 – May 19, 2006 |
| Freezing temperatures High temperature ≤ 0 °C |
83 days | Dec 12, 1969 – Mar 4, 1970 |
| High temperature ≥ 20 °C | 38 days | Jun 23 – Jul 30, 2001 |
| High temperature ≥ 25 °C | 24 days | Jul 12 – Aug 4, 2018 |
| High temperature ≥ 30 °C | 4 days | Jul 29 – Aug 1, 2003 |
| Years | Station | Coordinates |
|---|---|---|
| 1963–2024 | Hameenlinna Lammi Pappila | location |