Vantaa
September
Weather in Vantaa for September 2026
Your guide to Vantaa weather in September - trends and predictions
In general, the average temperature in Vantaa at the beginning of September is 19.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.9 °C by the end of September.
Vantaa in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 92.4 mm.
Temperatures
Rain 🌧️
13
Dry days
17
Rainy days
0
Snow days
18°/11°
Temperatures
16 km/h
Avg max wind
80 %
Avg humidity
Vantaa Weather September
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Temperatures trend during September in Vantaa
See the weather trend as well as the moving average line
September weather in Vantaa day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 18° /11° | 3.3 mm | 4 | |
| 2 Sept. |  Moderate or heavy rain shower | 17° /11° | 5 mm | 4 | |
| 3 Sept. | Light rain shower | 20° /12° | 1.4 mm | 4 | |
| 4 Sept. |  Cloudy | 20° /12° | 0 mm | 5 | |
| 5 Sept. | Patchy rain possible | 22° /13° | 0.2 mm | 5 | |
| 6 Sept. |  Partly cloudy | 20° /12° | 0 mm | 5 | |
| 7 Sept. | Partly cloudy | 21° /11° | 0.4 mm | 5 | |
| 8 Sept. |  Mist | 21° /13° | 0.1 mm | 5 | |
| 9 Sept. | Mist | 21° /13° | 0 mm | 5 | |
| 10 Sept. | Mist | 20° /13° | 0.6 mm | 5 | |
| 11 Sept. | Mist | 20° /14° | 3.1 mm | 4 | |
| 12 Sept. | Mist | 19° /13° | 0.5 mm | 4 | |
| 13 Sept. |  Moderate rain | 18° /12° | 11.9 mm | 4 | |
| 14 Sept. |  Overcast | 17° /11° | 9.6 mm | 4 | |
| 15 Sept. | Overcast | 16° /9° | 3.4 mm | 4 | |
| 16 Sept. | Cloudy | 17° /10° | 0.9 mm | 4 | |
| 17 Sept. | Light rain shower | 17° /10° | 4.2 mm | 5 | |
| 18 Sept. | Overcast | 16° /8° | 2.1 mm | 4 | |
| 19 Sept. | Light rain shower | 19° /10° | 3.9 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /10° | 1.3 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /10° | 0.6 mm | 4 | |
| 22 Sept. |  Sunny | 15° /8° | 0 mm | 4 | |
| 23 Sept. | Light rain shower | 14° /7° | 3.5 mm | 3 | |
| 24 Sept. | Partly cloudy | 15° /8° | 0.4 mm | 4 | |
| 25 Sept. | Overcast | 16° /8° | 1 mm | 4 | |
| 26 Sept. | Patchy rain possible | 16° /10° | 7 mm | 4 | |
| 27 Sept. | Patchy rain possible | 16° /10° | 5.7 mm | 4 | |
| 28 Sept. | Mist | 15° /8° | 8.2 mm | 3 | |
| 29 Sept. | Partly cloudy | 13° /7° | 0.3 mm | 4 | |
| 30 Sept. | Sunny | 13° /6° | 1.4 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Vantaa 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 Vantaa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Vantaa in September - FAQ
What are the expected maximum and minimum temperatures in Vantaa during September?
Enjoy moderate daytime temperatures of up to 18° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Vantaa during September?
Moderate rainfall is anticipated in Vantaa during September, with a total of 92.4 mm spread over approximately 17 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Vantaa during September?
The average wind speed in Vantaa during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Vantaa
Explore the daily rainfall trends and prepare for Vantaas September weather 💧
UV exposure in Vantaa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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