Tallinn climate
Tallinn (Estonia) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 6 °C43 °F, and about 685 mm27 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Tallinn climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | −228 | −622 | −425 | 522.0 | 26 |
| Feb | −327 | −720 | −524 | 431.7 | 25 |
| Mar | 133 | −425 | −229 | 401.6 | 26 |
| Apr | 644 | 134 | 439 | 401.6 | 10 |
| May | 1355 | 744 | 1049 | 481.9 | 0 |
| Jun | 1763 | 1153 | 1458 | 722.8 | 0 |
| Jul | 2170 | 1660 | 1865 | 652.6 | 0 |
| Aug | 2069 | 1559 | 1864 | 722.8 | 0 |
| Sep | 1660 | 1152 | 1356 | 572.3 | 0 |
| Oct | 948 | 541 | 745 | 712.8 | 2 |
| Nov | 439 | 134 | 337 | 682.7 | 11 |
| Dec | 033 | −327 | −130 | 572.3 | 21 |
| Year | 2170 | −720 | 643 | 68527 | 120 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 94% | 89% | 0.3 | 6:49 |
| Feb | 94% | 84% | 0.8 | 9:06 |
| Mar | 90% | 72% | 2.3 | 11:35 |
| Apr | 84% | 62% | 3.9 | 14:24 |
| May | 79% | 54% | 5.5 | 16:58 |
| Jun | 77% | 61% | 5.7 | 18:36 |
| Jul | 77% | 61% | 5.4 | 17:54 |
| Aug | 77% | 64% | 4.2 | 15:31 |
| Sep | 82% | 70% | 2.5 | 12:43 |
| Oct | 87% | 80% | 1.1 | 10:01 |
| Nov | 91% | 88% | 0.4 | 7:29 |
| Dec | 93% | 89% | 0.2 | 6:05 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Tallinn is like
The warmest month is July, with an average high of 21 °C70 °F and a low of 16 °C60 °F. The coldest is February, when highs average −3 °C27 °F and lows −7 °C20 °F. Seasons are strongly marked: the warmest month is on average 22.9 °C41.2 °F warmer than the coldest.
Annual precipitation is moderate at about 685 mm27 in. Rain is spread fairly evenly through the year. The wettest month is June (72 mm2.8 in), the driest is March (40 mm1.6 in).
Relative humidity ranges from 77% in July to 94% in February. The clearest skies (lowest average cloud amount, 54%) are typical of May. Average wind speed near the ground ranges from 14 km/h (9 mph) in May to 22 km/h (14 mph) in December. Daylight lasts from about 6.1 hours in December to 18.6 hours in June.
A lasting snow cover is typical in December–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 24 cm).
Best time to visit Tallinn
Based on these averages, the most comfortable months for sightseeing and outdoor activities are July and August: average highs of 20 °C69 °F to 21 °C70 °F with 65 mm2.6 in to 72 mm2.8 in of precipitation per month.
The most challenging month is February, which is cold, with average highs of −3 °C27 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Tallinn
- Winter (December–February) — highs −327 to 0 °C33 °F, lows −720 to −3 °C27 °F, about 51 mm2.0 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 133 to 13 °C55 °F, lows −425 to 7 °C44 °F, about 43 mm1.7 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Summer (June–August) — highs 1763 to 21 °C70 °F, lows 1153 to 16 °C60 °F, about 70 mm2.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 439 to 16 °C60 °F, lows 134 to 11 °C52 °F, about 66 mm2.6 in of precipitation a month. Pack a warm coat, layers and closed shoes.
How Tallinn compares
Compared with Helsinki, about 82 km to the north, Tallinn has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in May (1.1 °C2 °F warmer).
Places in other countries with the most similar temperature and rainfall pattern: Espoo (Finland, Dfb), Helsinki (Finland, Dfb) and Turku (Finland, Dfb).
Nearby places
- Helsinki 82 km · 6 °C43 °F · 712 mm28 in
- Espoo 86 km · 6 °C43 °F · 727 mm29 in
- Vantaa 97 km · 5 °C42 °F · 733 mm29 in
- Turku 179 km · 6 °C42 °F · 723 mm28 in
- Lahti 179 km · 4 °C40 °F · 746 mm29 in
- Tampere 235 km · 4 °C40 °F · 776 mm31 in
- Pskov 274 km · 5 °C42 °F · 863 mm34 in
- Mariehamn 280 km · 7 °C45 °F · 649 mm26 in
Frequently asked questions
What is the warmest month in Tallinn?
July is the warmest month in Tallinn, with an average high of 21 °C (70 °F) and an average low of 16 °C (60 °F).
What is the coldest month in Tallinn?
February is the coldest month, with an average high of -3 °C (27 °F) and an average low of -7 °C (20 °F).
When does it rain the most in Tallinn?
June is the wettest month with about 72 mm (2.8 in) of precipitation; March is the driest with about 40 mm (1.6 in).
What is the best time to visit Tallinn?
Judging by long-term averages, the most comfortable months are July and August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.