Climate averages 1991–2020
Nepean weather
in April.
A cool, wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Nepean: daytime highs average 10.7°C and nights cool to about 0.3°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 92 mm of rain on roughly 11 days, which makes April a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 29 min on an average April day.
The nearest other city in this atlas is Gloucester, Canada (7 km away). In April its highs average 10.6°C, about as warm as Nepean, with 92 mm of rain.
Among the 86 cities listed in Canada, Nepean ranks joint 33rd of 86 for the warmest April highs and joint 47th of 86 for the driest April (rainfall, lowest first). The mean April high of those 86 cities is 10.3°C; Nepean is 0.4°C warmer than that mean.
From April to May, average highs rise by 7.7°C to 18.4°C, and monthly rainfall falls from 92 mm to 85 mm.
The annual picture
April 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
Nepean climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -4.8°C-14.6°C | -14.6°C | 70 | 10.4 | 9.29 h |
| February | -3.0°C-13.4°C | -13.4°C | 57 | 8.9 | 10.410 h |
| March | 2.7°C-7.5°C | -7.5°C | 71 | 10.2 | 11.912 h |
| April, selected | 10.7°C0.3°C | 0.3°C | 92 | 11.3 | 13.513 h |
| May | 18.4°C7.7°C | 7.7°C | 85 | 11.3 | 14.915 h |
| June | 23.3°C13.3°C | 13.3°C | 95 | 11.3 | 15.616 h |
| July | 25.7°C16.3°C | 16.3°C | 94 | 11.7 | 15.315 h |
| August | 24.5°C15.7°C | 15.7°C | 86 | 10.8 | 14.114 h |
| September | 20.4°C11.8°C | 11.8°C | 90 | 9.9 | 12.613 h |
| October | 12.8°C5.4°C | 5.4°C | 97 | 11.7 | 11.011 h |
| November | 5.5°C-1.0°C | -1.0°C | 80 | 11.1 | 9.610 h |
| December | -1.1°C-8.4°C | -8.4°C | 76 | 11.5 | 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
April in nearby cities
- Gloucester, Canada in AprilCanada · 7 kmHigh 10.6°C · Low 0.4°C · 92 mm rain
- Ottawa in AprilCanada · 9 kmHigh 10.7°C · Low 0.6°C · 90 mm rain
- Kanata in AprilCanada · 16 kmHigh 10.7°C · Low 0.2°C · 89 mm rain
- Gatineau in AprilCanada · 16 kmHigh 10.6°C · Low 0.5°C · 90 mm rain
- Orléans, Canada in AprilCanada · 22 kmHigh 10.2°C · Low 0.2°C · 92 mm rain
- Kingston, Canada in AprilCanada · 137 kmHigh 8.8°C · Low 1.9°C · 101 mm rain
- Pierrefonds-Roxboro in AprilCanada · 148 kmHigh 10.1°C · Low 0.8°C · 102 mm rain
- Saint-Louis-de-Terrebonne in AprilCanada · 156 kmHigh 10.1°C · Low 0.2°C · 103 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 Nepean) is explained once on the Nepean year overview and on the Sources, method and limits page.
Gloucester, Canada lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.