Espoo
September
Weather in Espoo for September 2026
Your guide to Espoo weather in September - trends and predictions
Until now, September 2026 in Espoo is slightly cooler than the historical average by 1.8 °C.
Expect cooler weather in the next days in Espoo with the forecast suggesting a temperature of 16.6 °C, lower than the historical average.
In general, the average temperature in Espoo at the beginning of September is 19.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 16.1 °C by the end of September.
Espoo experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 79.3 mm.
Temperatures
Rain 🌧️
20
Dry days
10
Rainy days
0
Snow days
17°/11°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
Espoo Weather September
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Temperatures trend during September in Espoo
See the weather trend as well as the moving average line
September weather in Espoo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 18° /12° | 2.5 mm | 3 | |
| 2 Sept. | Light rain shower | 18° /11° | 3.2 mm | 4 | |
| 3 Sept. | Light rain shower | 19° /12° | 0.5 mm | 4 | |
| 4 Sept. |  Cloudy | 20° /12° | 0.2 mm | 4 | |
| 5 Sept. |  Sunny | 21° /12° | 0.1 mm | 4 | |
| 6 Sept. | Sunny | 19° /11° | 0 mm | 5 | |
| 7 Sept. |  Partly cloudy | 19° /10° | 0.2 mm | 5 | |
| 8 Sept. | Patchy rain possible | 20° /14° | 0.4 mm | 4 | |
| 9 Sept. |  Overcast | 19° /14° | 1.7 mm | 4 | |
| 10 Sept. |  Mist | 19° /13° | 1.7 mm | 4 | |
| 11 Sept. | Overcast | 19° /13° | 2.8 mm | 4 | |
| 12 Sept. | Patchy rain possible | 18° /12° | 1.7 mm | 4 | |
| 13 Sept. | Patchy rain possible | 15° /10° | 1 mm | 1 | |
| 14 Sept. | Sunny | 17° /7° | 0 mm | 2.4 | |
| 15 Sept. | Overcast | 16° /8° | 0 mm | 2.5 | |
| 16 Sept. | Overcast | 18° /10° | 0 mm | 2.3 | |
| 17 Sept. | Patchy rain possible | 17° /12° | 1.1 mm | 4 | |
| 18 Sept. | Patchy rain possible | 15° /11° | 0.9 mm | 4 | |
| 19 Sept. | Light rain shower | 16° /12° | 12.4 mm | 4 | |
| 20 Sept. | Patchy rain possible | 13° /11° | 13.1 mm | 4 | |
| 21 Sept. | Overcast | 15° /9° | 0.1 mm | 4 | |
| 22 Sept. | Mist | 15° /7° | 0.3 mm | 4 | |
| 23 Sept. | Sunny | 18° /7° | 0.6 mm | 5 | |
| 24 Sept. | Sunny | 19° /11° | 0 mm | 5 | |
| 25 Sept. | Sunny | 19° /12° | 0 mm | 5 | |
| 26 Sept. | Sunny | 19° /11° | 0 mm | 5 | |
| 27 Sept. |  Light drizzle | 16° /10° | 6.3 mm | 4 | |
| 28 Sept. | Mist | 15° /9° | 7.7 mm | 3 | |
| 29 Sept. | Partly cloudy | 13° /8° | 0.2 mm | 4 | |
| 30 Sept. | Sunny | 12° /6° | 1.7 mm | 4 | |
| Next | |||||
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.
Change Month
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 79.3 mm spread over approximately 10 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 💧
Typically, Espoo has 10 rainy days in September with a total of 79.3 mm of rainfall.
UV exposure in Espoo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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