easeweather.com
Koillismaa (Kuusamo)
EnontekiöEspooHelsinkiIso-SyöteIvaloKemiKeräläKilpisjärviKittiläKuusamoLappajärviLeviOuluPyhäRovaniemiRukaSaariselkaSirkkaTampereTurkuVaasaVantaaÄkäslompolo More Locations
Finland weather

Weather in Koillismaa for September 2026

Your guide to Koillismaa weather in September - trends and predictions

    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 2026, no snow is expected in the next 2 weeks.

    • Temperatures

  • Until now, September 2026 in Koillismaa has been significantly cooler than historical averages by 5.5 °C, with average temperature of 10.8 °C.

  • The forecast for the next days in Koillismaa predicts a temperature of 9.6 °C, which is cooler than the historical average.

  • In general, the average temperature in Koillismaa at the beginning of September is 15.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 8.7 °C by the end of September.

    • Rain 🌧️

  • Koillismaa experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 72.9 mm.

Average dry days
8
Dry days
Average rainy days
21
Rainy days
Average snowy days
1
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
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain shower
15°
2
Light rain shower
17°
3
Fog
18°
4
Light rain shower
15°
5
Mist
16°
6
Patchy rain possible
15°
7
Overcast
15°
8
Overcast
16°
9
Fog
18°
10
Overcast
18°
11
Fog
16°
12
Overcast
17°
13
Fog
13°
14
Sunny
10°
15
Sunny
10°
16
Overcast
11°
17
Light rain shower
9°
18
Fog
10°
19
Mist
12°
20
Overcast
12°
21
Sunny
12°
22
Light rain shower
10°
23
Patchy rain possible
7°
24
Light rain shower
6°
25
Light rain shower
6°
26
Overcast
6°
27
Overcast
13°
28
Fog
12°
29
Light rain shower
10°
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 UV More
1 Sept. Light rain shower
Light rain shower
 15° /10° 2.2 mm 3
2 Sept. Light rain shower
Light rain shower
 17° /10° 2.1 mm 3
3 Sept. Fog
Fog
 18° /9° 1.3 mm 4
4 Sept. Light rain shower
Light rain shower
 15° /9° 4.2 mm 3
5 Sept. Mist
Mist
 16° /7° 5.3 mm 3
6 Sept. Patchy rain possible
Patchy rain possible
 15° /7° 1.2 mm 3
7 Sept. Overcast
Overcast
 15° /7° 0 mm 3
8 Sept. Overcast
Overcast
 16° /8° 3.6 mm 3
9 Sept. Fog
Fog
 18° /10° 1.9 mm 4
10 Sept. Overcast
Overcast
 18° /10° 1.2 mm 4
11 Sept. Fog
Fog
 16° /9° 2.2 mm 3
12 Sept. Overcast
Overcast
 17° /10° 2.5 mm 3
13 Sept. Fog
Fog
 13° /7° 1.3 mm 1.7
14 Sept. Sunny
Sunny
 10° /5° 0.1 mm 1.6
15 Sept. Sunny
Sunny
 10° /4° 0 mm 1.5
16 Sept. Overcast
Overcast
 11° /5° 0 mm 1.3
17 Sept. Light rain shower
Light rain shower
 9° /7° 7.8 mm 2
18 Sept. Fog
Fog
 10° /8° 2.1 mm 2
19 Sept. Mist
Mist
 12° /8° 0 mm 4
20 Sept. Overcast
Overcast
 12° /8° 2.6 mm 3
21 Sept. Sunny
Sunny
 12° /6° 0.3 mm 4
22 Sept. Light rain shower
Light rain shower
 10° /7° 9.3 mm 2
23 Sept. Patchy rain possible
Patchy rain possible
 7° /6° 3.5 mm 2
24 Sept. Light rain shower
Light rain shower
 6° /3° 15.1 mm 2
25 Sept. Light rain shower
Light rain shower
 6° /4° 2.3 mm 2
26 Sept. Overcast
Overcast
 6° /3° 0.1 mm 2
27 Sept. Overcast
Overcast
 13° /5° 4.9 mm 3
28 Sept. Fog
Fog
 12° /3° 1.3 mm 3
29 Sept. Light rain shower
Light rain shower
 10° /3° 0.8 mm 3
30 Sept. Light rain shower
Light rain shower
 8° /4° 2 mm 3
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.
Change Month
‹
›

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 72.9 mm spread over approximately 21 days. Considering plans for rainy days is advisable.

Will it snow in Koillismaa in September 2026?
Koillismaa typically sees 0.1 cm of snowfall during September.

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.

September rainfall patterns in Koillismaa

Explore the daily rainfall trends and prepare for Koillismaas September weather 💧
Typically, Koillismaa has 21 rainy days in September with a total of 72.9 mm of rainfall.
Top locations in Koillismaa
Select a location for an accurate weather forecast
KuusamoRuka
More Locations

Quick links

More Koillismaa weather pages
You are here
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.

Found a mistake?
We appreciate your attention to details. Tell us here.