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Kemptville (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Kemptville.
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Climate overview of Kemptville
Temperatures in Kemptville, Ontario, Canada, vary greatly throughout the year. July is the hottest month at 28°C (82°F), while January is the coldest at -3°C (27°F).
Rain/snowfall is high, totalling around 1074 mm (42 in) per year. June is the wettest month and February the driest. The city also experiences warm summers and very cold winters. The sunniest month is July, with 9.3 hours of sunshine per day on average.
Kemptville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kemptville - and find the best time to visit.
Monthly Temperature in Kemptville
The climate in Kemptville is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold -3°C (27°F) during cooler months like January.
At night, you can expect temperatures ranging from 15°C (59°F) in July to around -14°C (7°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Kemptville
Kemptville has a notably wet climate with abundant precipitation, recording 1074 mm (42 in) of rain/snowfall per year. Year-round, Kemptville has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 105 mm (4.1 in), and the driest month, February, with 69 mm (2.7 in), is minimal. For more details, please visit our Kemptville 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 Kemptville
Seasonal changes in sunshine hours are quite dramatic in Kemptville. 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 2.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Ottawa, Canada (44 KM, 27 Miles).
Daily hours of sunshine
Data from: Ottawa, Canada (44 KM, 27 Miles).
Daily percentage of sunshine
Data from: Ottawa, Canada (44 KM, 27 Miles).
Humidity in Kemptville by Month
The relative humidity is moderate throughout the year in Kemptville.
The city experiences its highest humidity in December, reaching 72%. In May, the humidity drops to its lowest level at 49%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Ottawa, Canada (44 KM, 27 Miles).
Best Time to Visit Kemptville
For comfortable weather, consider visiting Kemptville in May, 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
very cold
Feb
very cold
Mar
cold
Apr
wet
May
excellent
Jun
very good
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
cold
Dec
cold
- Best overall: May, 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 -14°C (7°F).
Frequently asked questions about the climate in Kemptville
What is the best time to visit Kemptville?
May, July, August and September typically offer the most optimal weather in Kemptville. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Kemptville has warm summers and very cold winters.
What temperatures can I expect in Kemptville?
Daytime highs range from -3°C (27°F) in January to 28°C (82°F) in July. Nighttime lows range from -14°C (7°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Kemptville get?
Annual rainfall is around 1074 mm (42 in). June is the wettest month with 105 mm (4.1 in), while February is the driest with 69 mm (2.7 in).
How sunny is Kemptville?
Kemptville receives around 2,087 hours of sunshine per year. July is the sunniest month with 280 hours, while December is the cloudiest with just 83 hours. Overall, Kemptville enjoys abundant sunshine.
Kemptville 3-Day Forecast
Kemptville on the map
Kemptville is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Toronto
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14°C (57°F) Quebec City12°C (54°F) Calgary
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