Vantaa
September
Weather in Vantaa for September 2025
Your guide to Vantaa weather in September - trends and predictions
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 15.6 °C by the end of September.
Vantaa sees moderate rainfall in September, averaging 7 rainy days.
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Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
19°/9°
Temperatures
16 km/h
Avg max wind
81 %
Avg humidity
Vantaa in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  17° | 3 20° | 4  20° | 5 22° | 6  19° | 7 20° |
| 8  21° | 9 21° | 10 20° | 11 20° | 12 20° | 13  18° | 14  18° |
| 15 16° | 16 18° | 17 18° | 18 16° | 19 19° | 20 18° | 21 18° |
| 22  15° | 23 15° | 24 17° | 25 16° | 26 16° | 27 16° | 28 16° |
| 29 14° | 30  14° |
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Temperatures trend during September in Vantaa
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° /11° | 5 mm | 4 | |
| 2 Sept. | Moderate or heavy rain shower | 17° /11° | 7.6 mm | 4 | |
| 3 Sept. | Light rain shower | 20° /12° | 1.7 mm | 5 | |
| 4 Sept. | Cloudy | 20° /12° | 0 mm | 5 | |
| 5 Sept. | Patchy rain possible | 22° /12° | 0.3 mm | 6 | |
| 6 Sept. | Partly cloudy | 19° /11° | 0 mm | 6 | |
| 7 Sept. | Partly cloudy | 20° /10° | 0 mm | 6 | |
| 8 Sept. | Mist | 21° /13° | 0 mm | 6 | |
| 9 Sept. | Mist | 21° /13° | 0 mm | 5 | |
| 10 Sept. | Mist | 20° /13° | 0.9 mm | 5 | |
| 11 Sept. | Mist | 20° /14° | 4.7 mm | 5 | |
| 12 Sept. | Mist | 20° /13° | 0.1 mm | 5 | |
| 13 Sept. | Moderate rain | 18° /13° | 15.3 mm | 4 | |
| 14 Sept. | Overcast | 18° /11° | 11.1 mm | 4 | |
| 15 Sept. | Overcast | 16° /9° | 1.2 mm | 4 | |
| 16 Sept. | Cloudy | 18° /10° | 0 mm | 5 | |
| 17 Sept. | Light rain shower | 18° /10° | 0.9 mm | 5 | |
| 18 Sept. | Overcast | 16° /7° | 0 mm | 4 | |
| 19 Sept. | Light rain shower | 19° /9° | 1 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /10° | 1.6 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /10° | 0 mm | 5 | |
| 22 Sept. | Sunny | 15° /9° | 0 mm | 5 | |
| 23 Sept. | Light rain shower | 15° /9° | 5.2 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /11° | 0.7 mm | 5 | |
| 25 Sept. | Overcast | 16° /10° | 1.5 mm | 4 | |
| 26 Sept. | Patchy rain possible | 16° /12° | 10.5 mm | 4 | |
| 27 Sept. | Patchy rain possible | 16° /11° | 8.5 mm | 4 | |
| 28 Sept. | Mist | 16° /9° | 12.2 mm | 4 | |
| 29 Sept. | Partly cloudy | 14° /8° | 0.4 mm | 4 | |
| 30 Sept. | Moderate or heavy rain with thunder | 14° /7° | 2.1 mm | 4 | |
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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.
Vantaa in September - FAQ
What are the expected maximum and minimum temperatures in Vantaa during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Vantaa during September?
Significant rainfall exceeding 184.9 mm is expected in Vantaa during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
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.
What to pack to Vantaa in September?
As you prepare for your trip to Vantaa 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 Vantaa, 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
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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