Vantaa
September
Weather in Vantaa for September 2026
Your guide to Vantaa weather in September - trends and predictions
Until now, September 2026 in Vantaa is cooler than usual, with temperatures averaging 17 °C, this is 2.4 °C below the typical seasonal average.
Expect cooler weather in the next days in Vantaa with the forecast suggesting a temperature of 15.9 °C, lower than the historical average.
In general, the average temperature in Vantaa at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.7 °C by the end of September.
Vantaa in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 80 mm.
Temperatures
Rain 🌧️
13
Dry days
17
Rainy days
0
Snow days
17°/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° /12° | 2.6 mm | 3 | |
| 2 Sept. |  Moderate or heavy rain shower | 18° /11° | 3.8 mm | 4 | |
| 3 Sept. | Light rain shower | 19° /12° | 1.2 mm | 4 | |
| 4 Sept. |  Cloudy | 20° /12° | 0.2 mm | 4 | |
| 5 Sept. | Patchy rain possible | 21° /12° | 0.2 mm | 4 | |
| 6 Sept. |  Sunny | 19° /11° | 0 mm | 5 | |
| 7 Sept. | Sunny | 20° /10° | 0.3 mm | 5 | |
| 8 Sept. |  Mist | 20° /13° | 0.3 mm | 4 | |
| 9 Sept. | Mist | 20° /13° | 1.4 mm | 4 | |
| 10 Sept. | Mist | 19° /12° | 2.4 mm | 4 | |
| 11 Sept. | Mist | 19° /13° | 2.4 mm | 4 | |
| 12 Sept. | Mist | 18° /11° | 0.5 mm | 4 | |
| 13 Sept. | Patchy rain possible | 15° /11° | 1.3 mm | 1.1 | |
| 14 Sept. | Sunny | 17° /7° | 0 mm | 2.4 | |
| 15 Sept. |  Overcast | 15° /8° | 0 mm | 2.5 | |
| 16 Sept. | Overcast | 17° /11° | 0 mm | 2.2 | |
| 17 Sept. | Patchy rain possible | 17° /12° | 2 mm | 4 | |
| 18 Sept. | Patchy rain possible | 15° /12° | 2.4 mm | 4 | |
| 19 Sept. | Light rain shower | 15° /13° | 13.4 mm | 4 | |
| 20 Sept. | Patchy rain possible | 14° /11° | 13.4 mm | 4 | |
| 21 Sept. | Patchy rain possible | 14° /9° | 0.2 mm | 4 | |
| 22 Sept. | Sunny | 14° /8° | 0.5 mm | 4 | |
| 23 Sept. |  Partly cloudy | 17° /7° | 0.8 mm | 5 | |
| 24 Sept. | Sunny | 17° /12° | 0 mm | 5 | |
| 25 Sept. | Sunny | 18° /12° | 0 mm | 5 | |
| 26 Sept. | Sunny | 18° /12° | 0 mm | 5 | |
| 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 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 Vantaa during September?
Moderate rainfall is anticipated in Vantaa during September, with a total of 80 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 💧
Typically, Vantaa has 17 rainy days in September with a total of 80 mm of rainfall.
UV exposure in Vantaa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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