Espoo
September
Weather in Espoo for September 2025
Your guide to Espoo weather in September - trends and predictions
In general, the average temperature in Espoo at the beginning of September is 19 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.4 °C by the end of September.
Espoo in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 91.6 mm.
Temperatures
Rain 🌧️
14
Dry days
16
Rainy days
0
Snow days
17°/11°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
Espoo in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2 17° | 3 20° | 4  20° | 5 21° | 6  18° | 7 20° |
| 8 20° | 9  20° | 10  20° | 11 19° | 12  20° | 13  18° | 14 18° |
| 15 16° | 16 18° | 17 18° | 18 16° | 19 19° | 20 18° | 21 17° |
| 22 16° | 23 16° | 24  17° | 25 16° | 26 16° | 27 16° | 28 16° |
| 29 14° | 30  13° |
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Temperatures trend during September in Espoo
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 17° /12° | 4.8 mm | 4 | |
| 2 Sept. | Light rain shower | 17° /12° | 6.4 mm | 4 | |
| 3 Sept. | Light rain shower | 20° /12° | 0.6 mm | 5 | |
| 4 Sept. | Cloudy | 20° /13° | 0 mm | 5 | |
| 5 Sept. | Patchy rain possible | 21° /13° | 0.2 mm | 5 | |
| 6 Sept. | Partly cloudy | 18° /11° | 0 mm | 6 | |
| 7 Sept. | Partly cloudy | 20° /10° | 0 mm | 6 | |
| 8 Sept. | Patchy rain possible | 20° /13° | 0.1 mm | 5 | |
| 9 Sept. | Overcast | 20° /14° | 0 mm | 5 | |
| 10 Sept. | Mist | 20° /14° | 1.2 mm | 5 | |
| 11 Sept. | Mist | 19° /14° | 5.3 mm | 5 | |
| 12 Sept. | Sunny | 20° /14° | 0.2 mm | 5 | |
| 13 Sept. | Moderate rain | 18° /13° | 12.1 mm | 4 | |
| 14 Sept. | Overcast | 18° /11° | 12.1 mm | 5 | |
| 15 Sept. | Cloudy | 16° /9° | 1 mm | 4 | |
| 16 Sept. | Overcast | 18° /11° | 0 mm | 4 | |
| 17 Sept. | Light rain shower | 18° /10° | 0.6 mm | 5 | |
| 18 Sept. | Overcast | 16° /8° | 0 mm | 4 | |
| 19 Sept. | Light rain shower | 19° /10° | 1 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /11° | 2 mm | 5 | |
| 21 Sept. | Patchy rain possible | 17° /10° | 0 mm | 5 | |
| 22 Sept. | Sunny | 16° /9° | 0 mm | 5 | |
| 23 Sept. | Light rain shower | 16° /10° | 6.4 mm | 4 | |
| 24 Sept. | Patchy light drizzle | 17° /11° | 0.9 mm | 5 | |
| 25 Sept. | Overcast | 16° /11° | 1.9 mm | 4 | |
| 26 Sept. | Patchy rain possible | 16° /12° | 10.9 mm | 4 | |
| 27 Sept. | Light drizzle | 16° /12° | 9.5 mm | 4 | |
| 28 Sept. | Mist | 16° /9° | 11.6 mm | 4 | |
| 29 Sept. | Partly cloudy | 14° /9° | 0.3 mm | 4 | |
| 30 Sept. | Moderate or heavy rain with thunder | 13° /7° | 2.5 mm | 4 | |
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Important Notice
Our weather forecast for Espoo 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 Espoo forecast closer to your planned date for the most up-to-date weather information.
Espoo in September - FAQ
What are the expected maximum and minimum temperatures in Espoo during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Espoo during September?
Moderate rainfall is anticipated in Espoo during September, with a total of 91.6 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Espoo during September?
The average wind speed in Espoo during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Espoo
Explore the daily rainfall trends and prepare for Espoos September weather 💧
UV exposure in Espoo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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