Algonquin in September
7.9out of 10
Yes, a good time to go
Warm and comfortable: highs around 23°C. Frequent rain: about 9 rainy days.
23°CAvg high
13°CAvg low
9Rainy days (75 mm)
12:16 hDaylight
06:39Sunrise · 18:56 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Frequent rain: about 9 rainy days
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±3.1 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -8°C | 50 mm | 8 | – | – | 4.0 |
| February | 1°C | -6°C | 48 mm | 7 | – | – | 4.3 |
| March | 8°C | -1°C | 62 mm | 10 | – | – | 5.3 |
| April | 15°C | 4°C | 109 mm | 12 | – | – | 6.1 |
| May | 21°C | 11°C | 111 mm | 12 | – | – | 7.1 |
| June | 26°C | 16°C | 97 mm | 12 | – | – | 7.4 |
| July | 28°C | 19°C | 87 mm | 10 | – | – | 7.7 |
| August | 27°C | 18°C | 91 mm | 10 | – | – | 7.6 |
| September | 23°C | 13°C | 75 mm | 9 | – | – | 7.9 |
| October | 16°C | 7°C | 77 mm | 9 | – | – | 7.0 |
| November | 8°C | 1°C | 60 mm | 8 | – | – | 5.7 |
| December | 2°C | -5°C | 54 mm | 8 | – | – | 4.3 |
Frequently asked questions
How hot is Algonquin in September?
Daytime highs average 23°C and nights about 13°C.
When is the best time to visit Algonquin?
The best months are September, July, August, June.