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Weather in Vantaa for September 2025

Your guide to Vantaa weather in September - trends and predictions

    Official Weather Alert ⚠️

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

    • Temperatures

  • Until now, September 2025 in Vantaa has been nearly identical to the historical average, with a temperature of 19.4 °C (showing only a slight deviation of -0.2 °C).

  • The forecast for the next days in Vantaa predicts a temperature of 14.7 °C, which is cooler than the historical average.

  • 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 13.3 °C by the end of September.

    • Rain 🌧️

  • Vantaa in September brings notable rainfall, with an average of 17 rainy days and a total precipitation of 92.4 mm.

Average dry days
13
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/11°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Vantaa 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
Moderate or heavy rain shower
17°
3
Light rain shower
20°
4
Cloudy
20°
5
Patchy rain possible
22°
6
Partly cloudy
20°
7
Partly cloudy
21°
8
Mist
21°
9
Mist
21°
10
Mist
20°
11
Mist
20°
12
Mist
19°
13
Moderate rain
18°
14
Overcast
17°
15
Overcast
16°
16
Weather Alert Moderate rain
16°
17
Weather Alert Moderate rain
15°
18
Patchy rain possible
17°
19
Patchy rain possible
18°
20
Patchy rain possible
18°
21
Patchy rain possible
13°
22
Patchy rain possible
16°
23
Patchy rain possible
14°
24
Sunny
12°
25
Sunny
11°
26
Sunny
12°
27
Sunny
14°
28
Partly cloudy
15°
29
Partly cloudy
15°
30
Moderate or heavy rain with thunder
14°

Temperatures trend during September in Vantaa

See the weather trend as well as the moving average line

September weather in Vantaa 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° /11° 3.3 mm 4
2 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /11° 5 mm 4
3 Sept. Light rain shower
Light rain shower
 20° /12° 1.4 mm 4
4 Sept. Cloudy
Cloudy
 20° /12° 0 mm 5
5 Sept. Patchy rain possible
Patchy rain possible
 22° /13° 0.2 mm 5
6 Sept. Partly cloudy
Partly cloudy
 20° /12° 0 mm 5
7 Sept. Partly cloudy
Partly cloudy
 21° /11° 0.4 mm 5
8 Sept. Mist
Mist
 21° /13° 0.1 mm 5
9 Sept. Mist
Mist
 21° /13° 0 mm 5
10 Sept. Mist
Mist
 20° /13° 0.6 mm 5
11 Sept. Mist
Mist
 20° /14° 3.1 mm 4
12 Sept. Mist
Mist
 19° /13° 0.5 mm 4
13 Sept. Moderate rain
Moderate rain
 18° /12° 11.9 mm 4
14 Sept. Overcast
Overcast
 17° /11° 9.6 mm 4
15 Sept. Overcast
Overcast
 16° /9° 1.2 mm 4
16 Sept. Moderate rain
Moderate rain
 16° /12° 5.8 mm 0.3
17 Sept. Moderate rain
Moderate rain
 15° /11° 10.1 mm 0.5
18 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 1.1 mm 0.5
19 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 2.5 mm 0.5
20 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 0.3 mm 0.4
21 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 0.8 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 16° /10° 1.4 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 14° /6° 0.8 mm 3
24 Sept. Sunny
Sunny
 12° /4° 0 mm 3
25 Sept. Sunny
Sunny
 11° /3° 0 mm 3
26 Sept. Sunny
Sunny
 12° /4° 0 mm 3
27 Sept. Sunny
Sunny
 14° /5° 0 mm 3
28 Sept. Partly cloudy
Partly cloudy
 15° /7° 0 mm 3
29 Sept. Partly cloudy
Partly cloudy
 15° /8° 0 mm 4
30 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 14° /7° 2.1 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.
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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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Location coordinates Where is Vantaa?

Get accurate weather forecasts for Vantaa, located at latitude 60.294 and longitude 25.041. Stay updated with localized weather information tailored for Vantaa.

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