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.
The climate of Espoo in September is notably wet, with an average of 13 rainy days.
Is September a good time to visit Espoo? check out the best time to travel to Espoo page.
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17
Dry days
13
Rainy days
0
Snow days
17°/11°
Temperatures
20 km/h
Avg max wind
82 %
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 73.2 mm spread over approximately 13 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 20 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Espoo in September?
As you prepare for your trip to Espoo 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 Espoo, 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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