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Whitby (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Whitby.
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Climate overview of Whitby
The climate in Whitby, Ontario, Canada, is marked by large temperature swings across the seasons, ranging from 26°C (79°F) in July to 0°C (32°F) in January.
Whitby sees a moderate amount of rain/snowfall, totalling around 991 mm (39 in) per year. It experiences warm summers and very cold winters, creating some seasonal variation. July is the sunniest month, averaging 9.3 hours of sunshine per day.
Whitby Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Whitby - and find the best time to visit.
Monthly Temperature in Whitby
In Whitby, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in July, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like January.
At night, you can expect temperatures ranging from 17°C (63°F) in July to around -9°C (16°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Whitby
On average, Whitby receives a reasonable amount of rain/snowfall, with an annual precipitation of 991 mm (39 in). Year-round, Whitby has a balanced climate with minimal variation in precipitation. The difference between the wettest month, April, with 94 mm (3.7 in), and the driest month, February, with 66 mm (2.6 in), is minimal. For more details, please visit our Whitby Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Whitby
Seasonal changes in sunshine hours are quite dramatic in Whitby. While July receives considerable daily sunshine with up to 9.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Toronto, Canada (44 KM, 27 Miles).
Daily hours of sunshine
Data from: Toronto, Canada (44 KM, 27 Miles).
Daily percentage of sunshine
Data from: Toronto, Canada (44 KM, 27 Miles).
Humidity in Whitby by Month
The city experiences its highest humidity in September, reaching 87%. In April, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Toronto, Canada (44 KM, 27 Miles).
Best Time to Visit Whitby
For comfortable weather, consider visiting Whitby in June, July, August and September. Conditions are usually least favourable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
cold
Apr
cold
May
good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
cold
Dec
cold
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Whitby
What is the best time to visit Whitby?
June, July, August and September typically offer the most optimal weather in Whitby. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Whitby has warm summers and very cold winters.
What temperatures can I expect in Whitby?
Daytime highs range from 0°C (32°F) in January to 26°C (79°F) in July. Nighttime lows range from -9°C (16°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Whitby get?
Annual rainfall is around 991 mm (39 in). April is the wettest month with 94 mm (3.7 in), while February is the driest with 66 mm (2.6 in).
How sunny is Whitby?
Whitby receives around 2,070 hours of sunshine per year. July is the sunniest month with 280 hours, while December is the cloudiest with just 78 hours. Overall, Whitby enjoys abundant sunshine.
Whitby 3-Day Forecast
Whitby on the map
Whitby is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
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22°C (72°F) Ottawa22°C (72°F) Quebec City
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