Tallinn
September
Weather in Tallinn for September 2025
Your guide to Tallinn weather in September - trends and predictions
Storm Gusts Warning - See hour by hour.
Until now, September 2025 in Tallinn has been nearly identical to the historical average, with a temperature of 20.5 °C (showing only a slight deviation of -0.1 °C).
The forecast for the next days in Tallinn predicts a temperature of 13.6 °C, which is cooler than the historical average.
In general, the average temperature in Tallinn at the beginning of September is 21 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12 °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.
Official Weather Alert ⚠️
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
Move between months or click on a day
Temperatures trend during September in Tallinn
See the weather trend as well as the moving average line
September weather in Tallinn day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 19° /11° | 1.8 mm | 4 | |
| 2 Sept. |  Moderate or heavy rain with thunder | 19° /11° | 5.2 mm | 5 | |
| 3 Sept. | Light rain shower | 21° /12° | 1.4 mm | 5 | |
| 4 Sept. |  Sunny | 22° /12° | 0 mm | 6 | |
| 5 Sept. | Sunny | 23° /13° | 0 mm | 6 | |
| 6 Sept. | Sunny | 21° /12° | 0.1 mm | 5 | |
| 7 Sept. |  Partly cloudy | 22° /12° | 0.2 mm | 5 | |
| 8 Sept. |  Cloudy | 23° /13° | 0.1 mm | 5 | |
| 9 Sept. | Partly cloudy | 23° /12° | 0 mm | 6 | |
| 10 Sept. | Cloudy | 21° /14° | 0.6 mm | 5 | |
| 11 Sept. |  Mist | 22° /14° | 1.7 mm | 5 | |
| 12 Sept. | Sunny | 20° /13° | 0.6 mm | 5 | |
| 13 Sept. | Light rain shower | 19° /13° | 14.4 mm | 4 | |
| 14 Sept. |  Overcast | 19° /12° | 6.7 mm | 4 | |
| 15 Sept. | Cloudy | 16° /10° | 1 mm | 4 | |
| 16 Sept. | Partly cloudy | 21° /11° | 0 mm | 6 | |
| 17 Sept. | Patchy rain possible | 16° /11° | 3 mm | 0.6 | |
| 18 Sept. | Patchy rain possible | 16° /10° | 0.8 mm | 0.6 | |
| 19 Sept. | Patchy rain possible | 16° /12° | 1.1 mm | 0.6 | |
| 20 Sept. | Patchy rain possible | 17° /14° | 3.1 mm | 0.7 | |
| 21 Sept. | Patchy rain possible | 17° /12° | 0.4 mm | 3 | |
| 22 Sept. | Cloudy | 12° /10° | 0 mm | 3 | |
| 23 Sept. | Partly cloudy | 13° /9° | 0 mm | 4 | |
| 24 Sept. | Patchy rain possible | 11° /9° | 0.9 mm | 3 | |
| 25 Sept. | Patchy rain possible | 14° /8° | 2.6 mm | 3 | |
| 26 Sept. | Patchy rain possible | 13° /8° | 0 mm | 2 | |
| 27 Sept. | Patchy rain possible | 12° /7° | 2 mm | 2 | |
| 28 Sept. | Patchy rain possible | 11° /9° | 1.5 mm | 3 | |
| 29 Sept. | Patchy rain possible | 9° /7° | 0.7 mm | 2 | |
| 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 ☀️
Quick links
More Tallinn weather pages
You are here
Where is Tallinn?Get accurate weather forecasts for Tallinn, located at latitude 59.437 and longitude 24.754. Stay updated with localized weather information tailored for Tallinn.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.