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Weather in Espoo for September 2025

Your guide to Espoo weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Wind Warning for Land Areas - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Espoo has been nearly identical to the historical average, with a temperature of 19.1 °C (showing only a slight deviation of -0.1 °C).

  • The forecast for the next days in Espoo predicts a temperature of 13.3 °C, which is cooler than the historical average.

  • In general, the average temperature in Espoo at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.4 °C by the end of September.

    • Rain 🌧️

  • Espoo in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 91.6 mm.

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/11°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Espoo Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Light rain shower
18°
2
Light rain shower
18°
3
Light rain shower
20°
4
Cloudy
20°
5
Sunny
21°
6
Partly cloudy
19°
7
Partly cloudy
20°
8
Patchy rain possible
21°
9
Overcast
20°
10
Mist
20°
11
Mist
19°
12
Sunny
19°
13
Moderate rain
18°
14
Overcast
17°
15
Cloudy
16°
16
Weather Alert Patchy rain possible
16°
17
Weather Alert Moderate rain
15°
18
Patchy rain possible
16°
19
Patchy rain possible
17°
20
Patchy rain possible
16°
21
Patchy rain possible
13°
22
Patchy rain possible
15°
23
Patchy rain possible
11°
24
Patchy rain possible
11°
25
Patchy rain possible
12°
26
Patchy rain possible
9°
27
Sunny
10°
28
Overcast
12°
29
Patchy rain possible
13°
30
Moderate or heavy rain with thunder
13°

Temperatures trend during September in Espoo

See the weather trend as well as the moving average line

September weather in Espoo day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Light rain shower
Light rain shower
 18° /12° 3.2 mm 4
2 Sept. Light rain shower
Light rain shower
 18° /12° 4.3 mm 4
3 Sept. Light rain shower
Light rain shower
 20° /13° 0.5 mm 4
4 Sept. Cloudy
Cloudy
 20° /13° 0 mm 5
5 Sept. Sunny
Sunny
 21° /13° 0.1 mm 5
6 Sept. Partly cloudy
Partly cloudy
 19° /12° 0 mm 5
7 Sept. Partly cloudy
Partly cloudy
 20° /12° 0.2 mm 5
8 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 0.1 mm 5
9 Sept. Overcast
Overcast
 20° /14° 0 mm 5
10 Sept. Mist
Mist
 20° /14° 1 mm 5
11 Sept. Mist
Mist
 19° /14° 3.6 mm 4
12 Sept. Sunny
Sunny
 19° /14° 2.1 mm 5
13 Sept. Moderate rain
Moderate rain
 18° /13° 9 mm 4
14 Sept. Overcast
Overcast
 17° /11° 10.6 mm 4
15 Sept. Cloudy
Cloudy
 16° /9° 1 mm 4
16 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 3 mm 0.5
17 Sept. Moderate rain
Moderate rain
 15° /11° 13.7 mm 0.4
18 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 0.8 mm 0.6
19 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 1.6 mm 0.6
20 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 0.3 mm 3
21 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 0.5 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 2.2 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 11° /5° 0.1 mm 2
24 Sept. Patchy rain possible
Patchy rain possible
 11° /4° 1.3 mm 2
25 Sept. Patchy rain possible
Patchy rain possible
 12° /8° 2.3 mm 2
26 Sept. Patchy rain possible
Patchy rain possible
 9° /4° 0.3 mm 2
27 Sept. Sunny
Sunny
 10° /2° 0 mm 3
28 Sept. Overcast
Overcast
 12° /2° 0.1 mm 2
29 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 0.3 mm 3
30 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 13° /7° 2.5 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.
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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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Location coordinates Where is Espoo?

Get accurate weather forecasts for Espoo, located at latitude 60.205 and longitude 24.652. Stay updated with localized weather information tailored for Espoo.

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