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Koillismaa (Kuusamo)
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Weather in Koillismaa for September 2025

Your guide to Koillismaa weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Wind Warning - See hour by hour.

    • Snow Forecast ❄️

  • Snowfall in Koillismaa during September is quite rare, with fewer than 2 snowy days on average.
    According to Koillismaa snow forecast for September 2025, 5 snowy days are expected until the end of the month. The closest date with snow is Sunday, 21 September.

    • Temperatures

  • Until now, September 2025 in Koillismaa has been nearly identical to the historical average, with a temperature of 17.8 °C (showing only a slight deviation of -0.2 °C).

  • The forecast for the next days in Koillismaa predicts a temperature of 7.7 °C, which is cooler than the historical average.

  • In general, the average temperature in Koillismaa at the beginning of September is 17.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 5.4 °C by the end of September.

    • Rain 🌧️

  • Koillismaa in September brings notable rainfall, with an average of 20 rainy days and a total precipitation of 86.3 mm.

Average dry days
10
Dry days
Average rainy days
20
Rainy days
Average snowy days
0
Snow days
Average temperatures
13°/7°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
84 %
Avg humidity

Koillismaa Weather September

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

Temperatures trend during September in Koillismaa

See the weather trend as well as the moving average line

September weather in Koillismaa day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Light rain shower
Light rain shower
 15° /9° 2.4 mm 0 cm
2 Sept. Light rain shower
Light rain shower
 18° /9° 1.9 mm 0 cm
3 Sept. Fog
Fog
 19° /9° 0.5 mm 0 cm
4 Sept. Light rain shower
Light rain shower
 16° /9° 1.9 mm 0 cm
5 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 1 mm 0 cm
6 Sept. Overcast
Overcast
 19° /9° 0.1 mm 0 cm
7 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 0.1 mm 0 cm
8 Sept. Overcast
Overcast
 17° /9° 2.6 mm 0 cm
9 Sept. Fog
Fog
 20° /11° 0.2 mm 0 cm
10 Sept. Overcast
Overcast
 20° /11° 0 mm 0 cm
11 Sept. Fog
Fog
 19° /11° 0.1 mm 0 cm
12 Sept. Overcast
Overcast
 19° /11° 3.3 mm 0 cm
13 Sept. Mist
Mist
 15° /9° 2.3 mm 0 cm
14 Sept. Mist
Mist
 12° /6° 3.1 mm 0 cm
15 Sept. Moderate rain
Moderate rain
 12° /7° 9.3 mm 0 cm
16 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 1.9 mm 0 cm
17 Sept. Patchy rain possible
Patchy rain possible
 11° /10° 1.8 mm 0 cm
18 Sept. Moderate rain
Moderate rain
 12° /9° 10.1 mm 0 cm
19 Sept. Patchy rain possible
Patchy rain possible
 10° /5° 0.3 mm 0 cm
20 Sept. Moderate rain
Moderate rain
 8° /6° 5.9 mm 0 cm
21 Sept. Patchy rain possible
Patchy rain possible
 9° /2° 1.1 mm 0.4 cm
22 Sept. Cloudy
Cloudy
 6° /0° 0.1 mm 0 cm
23 Sept. Patchy rain possible
Patchy rain possible
 6° /1° 1.2 mm 0.6 cm
24 Sept. Patchy rain possible
Patchy rain possible
 4° /0° 0.3 mm 0.2 cm
25 Sept. Overcast
Overcast
 3° /-1° 0 mm 0 cm
26 Sept. Partly cloudy
Partly cloudy
 6° /-2° 0 mm 0 cm
27 Sept. Patchy rain possible
Patchy rain possible
 6° /3° 3.2 mm 0 cm
28 Sept. Light freezing rain
Light freezing rain
 2° /-2° 0.3 mm 0.2 cm
29 Sept. Light rain shower
Light rain shower
 9° /3° 1.2 mm 0 cm
30 Sept. Light rain shower
Light rain shower
 8° /4° 2.9 mm 0 cm
Next
Important Notice
Our weather forecast for Koillismaa 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 Koillismaa forecast closer to your planned date for the most up-to-date weather information.
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Koillismaa in September - FAQ

What are the expected maximum and minimum temperatures in Koillismaa during September?
During September, expect a variety of temperatures with highs around 13° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Koillismaa during September?
Moderate rainfall is anticipated in Koillismaa during September, with a total of 86.3 mm spread over approximately 20 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Koillismaa during September?
The average wind speed in Koillismaa during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Koillismaa snow forecast September 2025

Track daily snowfall levels and discover Koillismaa’s snowy potential this September ❄️

September rainfall patterns in Koillismaa

Explore the daily rainfall trends and prepare for Koillismaas September weather 💧
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Location coordinates Where is Koillismaa?

Get accurate weather forecasts for Koillismaa, located at latitude 65.964 and longitude 29.189. Stay updated with localized weather information tailored for Koillismaa.

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