Estonia climate
Monthly averages for Tallinn, 2021–2025
In Tallinn, the warmest month is July, with an average high of 23°C, and the coldest is January, when nights average −5°C.
About 807 mm of rain falls in a year, on roughly 156 days. July is the wettest month (103 mm) and March the driest (36 mm).
Wind is strongest in January (16 km/h on average) and lightest in June (12 km/h).
Compared with Dublin, July afternoons are 3°C warmer, and January afternoons 9°C colder.
The hottest day in 2021–2025 reached 31.8°C (28 June 2024), and the coldest night fell to −23.5°C (18 February 2021).
Temperature
Bars run from the average night-time low to the average daytime high, in °C.
Rainfall
Average total rainfall each month, in millimetres.
Wind
Average wind speed at 10 metres each month, in km/h.
| Month | High °C | Low °C | Rain mm | Rain days | Sun h/day | Wind km/h |
|---|---|---|---|---|---|---|
| January | −1 | −5 | 75 | 17 | 1.3 | 16 |
| February | 0 | −5 | 41 | 10 | 2.8 | 15 |
| March | 4 | −2 | 36 | 10 | 6.5 | 15 |
| April | 9 | 1 | 45 | 10 | 9.8 | 14 |
| May | 15 | 6 | 50 | 9 | 12.9 | 13 |
| June | 21 | 12 | 76 | 11 | 14.6 | 12 |
| July | 23 | 15 | 103 | 17 | 13.6 | 12 |
| August | 21 | 14 | 101 | 15 | 11.2 | 13 |
| September | 17 | 10 | 63 | 11 | 8.9 | 13 |
| October | 10 | 5 | 74 | 14 | 5.2 | 16 |
| November | 5 | 1 | 77 | 16 | 2.2 | 15 |
| December | 1 | −4 | 66 | 17 | 1.0 | 15 |
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