Tallinn
September
Weather in Tallinn for September 2025
Your guide to Tallinn weather in September - trends and predictions
In general, the average temperature in Tallinn at the beginning of September is 20.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.4 °C by the end of September.
The climate of Tallinn in September is notably wet, with an average of 15 rainy days, and a total of 66.7 mm of precipitation.
Temperatures
Rain 🌧️
15
Dry days
15
Rainy days
0
Snow days
19°/11°
Temperatures
17 km/h
Avg max wind
77 %
Avg humidity
Tallinn Weather September
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Temperatures trend during September in Tallinn
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September weather in Tallinn day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 19° /11° | 2.6 mm | 5 | |
| 2 Sept. |  Moderate or heavy rain with thunder | 19° /12° | 7.8 mm | 5 | |
| 3 Sept. | Light rain shower | 20° /12° | 1.8 mm | 5 | |
| 4 Sept. |  Mist | 22° /13° | 0 mm | 6 | |
| 5 Sept. |  Overcast | 23° /14° | 0 mm | 6 | |
| 6 Sept. |  Sunny | 19° /11° | 0.1 mm | 6 | |
| 7 Sept. |  Partly cloudy | 21° /11° | 0 mm | 6 | |
| 8 Sept. |  Cloudy | 22° /12° | 0 mm | 6 | |
| 9 Sept. | Mist | 23° /12° | 0 mm | 6 | |
| 10 Sept. | Cloudy | 21° /13° | 0.8 mm | 5 | |
| 11 Sept. | Mist | 22° /13° | 2.5 mm | 5 | |
| 12 Sept. | Sunny | 22° /12° | 0.5 mm | 6 | |
| 13 Sept. | Mist | 19° /14° | 19.8 mm | 4 | |
| 14 Sept. | Overcast | 19° /12° | 6.6 mm | 5 | |
| 15 Sept. | Cloudy | 15° /11° | 1 mm | 4 | |
| 16 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 17 Sept. | Light rain shower | 19° /11° | 0.2 mm | 5 | |
| 18 Sept. | Overcast | 17° /9° | 0 mm | 4 | |
| 19 Sept. |  Moderate rain | 20° /9° | 1.9 mm | 5 | |
| 20 Sept. |  Light drizzle | 18° /12° | 0.9 mm | 5 | |
| 21 Sept. | Cloudy | 19° /11° | 0 mm | 5 | |
| 22 Sept. | Sunny | 18° /9° | 0 mm | 5 | |
| 23 Sept. | Light rain shower | 17° /9° | 3 mm | 4 | |
| 24 Sept. | Patchy light drizzle | 18° /10° | 0.4 mm | 5 | |
| 25 Sept. | Mist | 17° /11° | 0.6 mm | 4 | |
| 26 Sept. | Overcast | 17° /11° | 1.2 mm | 4 | |
| 27 Sept. | Light rain shower | 17° /11° | 7.1 mm | 4 | |
| 28 Sept. | Fog | 17° /11° | 2.2 mm | 4 | |
| 29 Sept. | Partly cloudy | 15° /9° | 1.3 mm | 4 | |
| 30 Sept. | Moderate or heavy rain with thunder | 14° /8° | 4.3 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Tallinn in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tallinn forecast closer to your planned date for the most up-to-date weather information.
Change Month
Tallinn in September - FAQ
What are the expected maximum and minimum temperatures in Tallinn during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Tallinn during September?
Moderate rainfall is anticipated in Tallinn during September, with a total of 66.7 mm spread over approximately 15 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Tallinn during September?
The average wind speed in Tallinn during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tallinn
Explore the daily rainfall trends and prepare for Tallinns September weather 💧
UV exposure in Tallinn during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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