Climate averages 1991–2020
Kanata weather
in September.
A mild, moderately wet month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Kanata: daytime highs average 20.4°C and nights cool to about 11.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 87 mm of rain on roughly 10 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 35 min on an average September day.
The nearest other city in this atlas is Nepean (16 km away). In September its highs average 20.4°C, about as warm as Kanata, with 90 mm of rain.
Among the 86 cities listed in Canada, Kanata ranks joint 31st of 86 for the warmest September highs and 50th of 86 for the driest September (rainfall, lowest first). The mean September high of those 86 cities is 19.8°C; Kanata is 0.6°C warmer than that mean.
From September to October, average highs fall by 7.6°C to 12.8°C, and monthly rainfall rises from 87 mm to 94 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Kanata climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -4.9°C-14.7°C | -14.7°C | 68 | 10.2 | 9.29 h |
| February | -3.0°C-13.6°C | -13.6°C | 55 | 8.7 | 10.410 h |
| March | 2.7°C-7.6°C | -7.6°C | 69 | 10.0 | 11.912 h |
| April | 10.7°C0.2°C | 0.2°C | 89 | 11.5 | 13.513 h |
| May | 18.4°C7.6°C | 7.6°C | 83 | 11.3 | 14.915 h |
| June | 23.2°C13.2°C | 13.2°C | 94 | 11.5 | 15.616 h |
| July | 25.7°C16.2°C | 16.2°C | 94 | 11.9 | 15.315 h |
| August | 24.5°C15.7°C | 15.7°C | 84 | 10.6 | 14.114 h |
| September, selected | 20.4°C11.8°C | 11.8°C | 87 | 10.1 | 12.613 h |
| October | 12.8°C5.4°C | 5.4°C | 94 | 11.5 | 11.011 h |
| November | 5.5°C-1.0°C | -1.0°C | 78 | 11.0 | 9.610 h |
| December | -1.1°C-8.5°C | -8.5°C | 74 | 11.1 | 8.89 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Nepean in SeptemberCanada · 16 kmHigh 20.4°C · Low 11.8°C · 90 mm rain
- Ottawa in SeptemberCanada · 21 kmHigh 20.4°C · Low 12.0°C · 95 mm rain
- Gloucester, Canada in SeptemberCanada · 23 kmHigh 20.3°C · Low 11.8°C · 90 mm rain
- Gatineau in SeptemberCanada · 26 kmHigh 20.3°C · Low 12.2°C · 95 mm rain
- Orléans, Canada in SeptemberCanada · 37 kmHigh 20.0°C · Low 11.6°C · 96 mm rain
- Kingston, Canada in SeptemberCanada · 127 kmHigh 20.2°C · Low 14.8°C · 95 mm rain
- Pierrefonds-Roxboro in SeptemberCanada · 163 kmHigh 20.4°C · Low 12.6°C · 92 mm rain
- Saint-Louis-de-Terrebonne in SeptemberCanada · 172 kmHigh 20.0°C · Low 11.9°C · 94 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Kanata) is explained once on the Kanata year overview and on the Sources, method and limits page.