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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 12 rainy days.

  • Is September a good time to visit Tallinn? check out the best time to travel to Tallinn page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/11°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Tallinn in September average weather

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Temperatures trend during September in Tallinn

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
19° /11° 2.6 mm 5
2 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
19° /12° 7.8 mm 5
3 Sept. Light rain shower
Light rain shower
20° /12° 1.8 mm 5
4 Sept. Mist
Mist
22° /13° 0 mm 6
5 Sept. Overcast
Overcast
23° /14° 0 mm 6
6 Sept. Sunny
Sunny
19° /11° 0.1 mm 6
7 Sept. Partly cloudy
Partly cloudy
21° /11° 0 mm 6
8 Sept. Cloudy
Cloudy
22° /12° 0 mm 6
9 Sept. Mist
Mist
23° /12° 0 mm 6
10 Sept. Cloudy
Cloudy
21° /13° 0.8 mm 5
11 Sept. Mist
Mist
22° /13° 2.5 mm 5
12 Sept. Sunny
Sunny
22° /12° 0.5 mm 6
13 Sept. Mist
Mist
19° /14° 19.8 mm 4
14 Sept. Overcast
Overcast
19° /12° 6.6 mm 5
15 Sept. Cloudy
Cloudy
15° /11° 1 mm 4
16 Sept. Partly cloudy
Partly cloudy
21° /11° 0 mm 6
17 Sept. Light rain shower
Light rain shower
19° /11° 0.2 mm 5
18 Sept. Overcast
Overcast
17° /9° 0 mm 4
19 Sept. Moderate rain
Moderate rain
20° /9° 1.9 mm 5
20 Sept. Light drizzle
Light drizzle
18° /12° 0.9 mm 5
21 Sept. Cloudy
Cloudy
19° /11° 0 mm 5
22 Sept. Sunny
Sunny
18° /9° 0 mm 5
23 Sept. Light rain shower
Light rain shower
17° /9° 3 mm 4
24 Sept. Patchy light drizzle
Patchy light drizzle
18° /10° 0.4 mm 5
25 Sept. Mist
Mist
17° /11° 0.6 mm 4
26 Sept. Overcast
Overcast
17° /11° 1.2 mm 4
27 Sept. Light rain shower
Light rain shower
17° /11° 7.1 mm 4
28 Sept. Fog
Fog
17° /11° 2.2 mm 4
29 Sept. Partly cloudy
Partly cloudy
15° /9° 1.3 mm 4
30 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
14° /8° 4.3 mm 3
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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.

Guide for Tallinn in September

In September, Tallinn, Estonia experiences a transition from the late summer to early autumn, with gradually cooling temperatures and changing weather patterns.

At the beginning of the month, the weather in Tallinn is typically mild and pleasant, with average temperatures around 15° and occasional sunny days. However, as the month progresses, the temperatures begin to drop, and the city experiences more frequent rainfall and overcast skies.

By the end of September, the average temperatures in Tallinn decrease to around 10°, signaling the arrival of autumn.

The weather in Tallinn during September can be quite unpredictable, with a mix of sunny days, cloudy skies, and occasional rain showers. Travelers visiting Tallinn during this time should be prepared for varying weather conditions and pack layers to accommodate the changing temperatures.

Additionally, it's advisable to carry an umbrella or raincoat for the possibility of rain showers towards the end of the month.

Overall, September in Tallinn offers a transition from the warmth of summer to the cooler temperatures of autumn, making it a great time to experience the changing seasons in this charming Baltic city.

Tallinn in September - FAQ

Is September a good time to visit Tallinn?
Yes, September is a good time to traveling to Tallinn, read more about the best time to visit Tallinn.
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 71.5 mm spread over approximately 12 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 19 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Tallinn in September?

As you prepare for your trip to Tallinn in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Tallinn, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

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Location coordinates 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.

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