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Uusimaa (Helsinki)
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Weather in Uusimaa for September 2027

Your guide to Uusimaa weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Uusimaa at the beginning of September is 16.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13 °C by the end of September.

    • Rain 🌧️

  • Uusimaa experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 69.3 mm.

    • More

  • Is September a good time to visit Uusimaa? check out the best time to travel to Uusimaa page.

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/10°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Uusimaa Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
17°
2
Light rain
16°
3
Patchy rain possible
17°
4
Partly cloudy
17°
5
Overcast
18°
6
Sunny
18°
7
Overcast
17°
8
Cloudy
18°
9
Patchy rain possible
18°
10
Patchy rain possible
17°
11
Patchy rain possible
18°
12
Patchy rain possible
17°
13
Moderate rain at times
16°
14
Light rain
15°
15
Light rain
14°
16
Light rain
15°
17
Light rain
15°
18
Patchy rain possible
14°
19
Light rain
15°
20
Patchy rain possible
14°
21
Patchy rain possible
15°
22
Cloudy
13°
23
Light rain
13°
24
Light rain
13°
25
Light rain
13°
26
Light rain
14°
27
Light rain
14°
28
Light rain
13°
29
Patchy rain possible
12°
30
Patchy rain possible
12°

What’s the Weather Like in Uusimaa This September?

Discover the average temperatures and weather trends across Uusimaa’s cities this September.
Patchy rain possibleHelsinki15 °C / 10 °CPatchy rain possibleEspoo17 °C / 11 °CPatchy rain possibleVantaa17 °C / 10 °CMore Locations

Temperatures trend during September in Uusimaa

See the weather trend as well as the moving average line

September weather in Uusimaa day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 1.5 mm 3
2 Sept. Light rain
Light rain
 16° /10° 2.7 mm 3
3 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.7 mm 3.6
4 Sept. Partly cloudy
Partly cloudy
 17° /10° 0.1 mm 3.5
5 Sept. Overcast
Overcast
 18° /10° 0.1 mm 3.5
6 Sept. Sunny
Sunny
 18° /10° 0.3 mm 3.4
7 Sept. Overcast
Overcast
 17° /10° 0.1 mm 3.3
8 Sept. Cloudy
Cloudy
 18° /12° 0.2 mm 3.2
9 Sept. Patchy rain possible
Patchy rain possible
 18° /13° 1.7 mm 3.1
10 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 1 mm 3.1
11 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 1.9 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 17° /12° 1.3 mm 2.9
13 Sept. Moderate rain at times
Moderate rain at times
 16° /12° 7.6 mm 2.8
14 Sept. Light rain
Light rain
 15° /10° 6.2 mm 2.8
15 Sept. Light rain
Light rain
 14° /9° 3.3 mm 2.7
16 Sept. Light rain
Light rain
 15° /10° 2.9 mm 2.6
17 Sept. Light rain
Light rain
 15° /10° 3.1 mm 2.6
18 Sept. Patchy rain possible
Patchy rain possible
 14° /8° 1.7 mm 2.5
19 Sept. Light rain
Light rain
 15° /10° 2.9 mm 2.4
20 Sept. Patchy rain possible
Patchy rain possible
 14° /10° 1.7 mm 2.3
21 Sept. Patchy rain possible
Patchy rain possible
 15° /9° 1.1 mm 2.3
22 Sept. Cloudy
Cloudy
 13° /8° 0 mm 2.2
23 Sept. Light rain
Light rain
 13° /8° 2.9 mm 2.1
24 Sept. Light rain
Light rain
 13° /8° 4.5 mm 2.1
25 Sept. Light rain
Light rain
 13° /9° 3.7 mm 2
26 Sept. Light rain
Light rain
 14° /10° 6.3 mm 1.9
27 Sept. Light rain
Light rain
 14° /9° 3 mm 1.9
28 Sept. Light rain
Light rain
 13° /9° 4.1 mm 1.8
29 Sept. Patchy rain possible
Patchy rain possible
 12° /9° 1.4 mm 1.8
30 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 1 mm 1.7
Next
Important Notice
Our weather forecast for Uusimaa 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 Uusimaa forecast closer to your planned date for the most up-to-date weather information.
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Uusimaa in September - FAQ

What are the expected maximum and minimum temperatures in Uusimaa during September?
During September, expect a variety of temperatures with highs around 15° and lows near 10°, suitable for diverse activities and preferences.

How much rainfall should be expected in Uusimaa during September?
Moderate rainfall is anticipated in Uusimaa during September, with a total of 69.3 mm spread over approximately 10 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Uusimaa during September?
The average wind speed in Uusimaa during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Uusimaa

Explore the daily rainfall trends and prepare for Uusimaas September weather 💧
Typically, Uusimaa has 10 rainy days in September with a total of 69.3 mm of rainfall.
Provinces in Uusimaa
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Helsinki
Top locations in Uusimaa
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EspooHelsinkiVantaa
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