Climate averages 1991–2020
Whitby weather
in April.
A cool, moderately 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 Whitby: daytime highs average 9.9°C and nights cool to about 2.3°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 84 mm of rain on roughly 12 days, which makes April a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 24 min on an average April day.
The nearest other city in this atlas is Oshawa (7 km away). In April its highs average 9.6°C, about as warm as Whitby, with 83 mm of rain.
Among the 86 cities listed in Canada, Whitby ranks 59th of 86 for the warmest April highs and joint 29th of 86 for the driest April (rainfall, lowest first). The mean April high of those 86 cities is 10.3°C; Whitby is 0.4°C cooler than that mean.
From April to May, average highs rise by 6.5°C to 16.4°C, and monthly rainfall falls from 84 mm to 80 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
Whitby climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.5°C-8.5°C | -8.5°C | 64 | 10.6 | 9.39 h |
| February | -1.0°C-8.8°C | -8.8°C | 52 | 8.3 | 10.410 h |
| March | 3.4°C-4.1°C | -4.1°C | 61 | 10.3 | 11.912 h |
| April, selected | 9.9°C2.3°C | 2.3°C | 84 | 11.5 | 13.413 h |
| May | 16.4°C8.8°C | 8.8°C | 80 | 11.2 | 14.715 h |
| June | 22.0°C14.8°C | 14.8°C | 93 | 11.4 | 15.415 h |
| July | 25.3°C18.2°C | 18.2°C | 87 | 11.1 | 15.115 h |
| August | 24.8°C18.0°C | 18.0°C | 85 | 10.1 | 14.014 h |
| September | 21.0°C14.5°C | 14.5°C | 80 | 9.4 | 12.613 h |
| October | 14.0°C8.2°C | 8.2°C | 83 | 11.4 | 11.011 h |
| November | 7.2°C1.9°C | 1.9°C | 73 | 10.6 | 9.710 h |
| December | 1.8°C-3.8°C | -3.8°C | 65 | 10.7 | 9.09 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
- Oshawa in AprilCanada · 7 kmHigh 9.6°C · Low 2.1°C · 83 mm rain
- Ajax in AprilCanada · 9 kmHigh 10.0°C · Low 2.2°C · 96 mm rain
- Pickering in AprilCanada · 16 kmHigh 9.5°C · Low 1.5°C · 82 mm rain
- Markham in AprilCanada · 27 kmHigh 10.7°C · Low 1.7°C · 92 mm rain
- Thornhill in AprilCanada · 40 kmHigh 10.2°C · Low 1.8°C · 77 mm rain
- Richmond Hill in AprilCanada · 40 kmHigh 10.8°C · Low 1.2°C · 77 mm rain
- Toronto in AprilCanada · 42 kmHigh 9.4°C · Low 1.8°C · 77 mm rain
- Vaughan in AprilCanada · 46 kmHigh 10.6°C · Low 1.3°C · 77 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 Whitby) is explained once on the Whitby year overview and on the Sources, method and limits page.