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30-year normals (1991-2020)
Tallinn has a humid continental climate, classified as Dfb in the Köppen system. The warmest month is July with an average high of 21°C, while the coldest month is February with lows dropping to -7°C. The annual temperature range of 28°C reflects moderate seasonal variation.
The driest month is May with only 9 rain days and 42mm of precipitation. For travellers, May through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 65% to 65% throughout the year.
Based on temperature and rainfall data, the best months to visit Tallinn are May, June, July. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
21°C
July
Coldest Month
-7°C
February
Driest Month
9 days
May
Annual Range
28°C
-7° to 21°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | -1°C | -5°C | 11 | 2h | View |
| February | -2°C | -7°C | 9 | 4h | View |
| March | 2°C | -4°C | 9 | 7h | View |
| April | 9°C | 1°C | 9 | 10h | View |
| May | 15°C | 6°C | 9 | 13h | View |
| June | 19°C | 11°C | 11 | 13h | View |
| July | 21°C | 14°C | 12 | 14h | View |
| August | 20°C | 14°C | 14 | 12h | View |
| September | 15°C | 10°C | 12 | 9h | View |
| October | 9°C | 5°C | 13 | 5h | View |
| November | 4°C | 0°C | 11 | 2h | View |
| December | 1°C | -3°C | 12 | 1h | View |
January
11 rain days, 2h sun
February
9 rain days, 4h sun
March
9 rain days, 7h sun
April
9 rain days, 10h sun
May
9 rain days, 13h sun
June
11 rain days, 13h sun
July
12 rain days, 14h sun
August
14 rain days, 12h sun
September
12 rain days, 9h sun
October
13 rain days, 5h sun
November
11 rain days, 2h sun
December
12 rain days, 1h sun
Tallinn in July
Data Sources for Tallinn
Climate normals represent 30-year averages (1991-2020). Individual years may vary.