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Weather in Muskoka for September 2025

Your guide to Muskoka weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Muskoka at the beginning of September is 19.7 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 19.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Muskoka in September is notably wet, with an average of 11 rainy days, and a total of 140.4 mm of precipitation.

    • More

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Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Muskoka Weather September

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

Temperatures trend during September in Muskoka

See the weather trend as well as the moving average line

September weather in Muskoka day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Moderate rain at times
Moderate rain at times
 21° /13° 0.6 mm 5
2 Sept. Sunny
Sunny
 18° /8° 0 mm 5
3 Sept. Partly cloudy
Partly cloudy
 21° /10° 0 mm 6
4 Sept. Sunny
Sunny
 24° /11° 0 mm 6
5 Sept. Sunny
Sunny
 26° /11° 0 mm 7
6 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /14° 22.6 mm 4
7 Sept. Heavy rain at times
Heavy rain at times
 10° /4° 11.8 mm 3
8 Sept. Moderate rain at times
Moderate rain at times
 16° /4° 1.5 mm 4
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /9° 8.6 mm 4
10 Sept. Patchy rain possible
Patchy rain possible
 21° /8° 0.2 mm 5
11 Sept. Partly cloudy
Partly cloudy
 25° /10° 0 mm 7
12 Sept. Sunny
Sunny
 26° /13° 0 mm 7
13 Sept. Sunny
Sunny
 27° /14° 0 mm 7
14 Sept. Partly cloudy
Partly cloudy
 27° /15° 0 mm 7
15 Sept. Sunny
Sunny
 28° /15° 0 mm 7
16 Sept. Sunny
Sunny
 28° /15° 0 mm 7
17 Sept. Cloudy
Cloudy
 26° /14° 0 mm 6
18 Sept. Overcast
Overcast
 26° /11° 0 mm 6
19 Sept. Overcast
Overcast
 24° /12° 0 mm 5
20 Sept. Overcast
Overcast
 26° /14° 0 mm 6
21 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /16° 9.4 mm 5
22 Sept. Patchy rain possible
Patchy rain possible
 23° /15° 7.8 mm 5
23 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /14° 42.4 mm 4
24 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 16° /14° 2.9 mm 4
25 Sept. Heavy rain at times
Heavy rain at times
 20° /14° 29.8 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 19° /14° 2.8 mm 4
27 Sept. Overcast
Overcast
 21° /11° 0 mm 5
28 Sept. Partly cloudy
Partly cloudy
 21° /12° 0 mm 6
29 Sept. Cloudy
Cloudy
 22° /14° 0 mm 5
30 Sept. Fog
Fog
 15° /12° 0 mm 4
Next
Important Notice
Our weather forecast for Muskoka 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 Muskoka forecast closer to your planned date for the most up-to-date weather information.
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Muskoka in September - FAQ

What are the expected maximum and minimum temperatures in Muskoka during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Muskoka during September?
Significant rainfall exceeding 140.4 mm is expected in Muskoka during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Muskoka during September?
The average wind speed in Muskoka during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Muskoka

Explore the daily rainfall trends and prepare for Muskokas September weather 💧

UV exposure in Muskoka during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Muskoka?

Get accurate weather forecasts for Muskoka, located at latitude 44.912 and longitude -79.374. Stay updated with localized weather information tailored for Muskoka.

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