Oakville Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Oakville.
Climate overview of Oakville
Oakville, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 33°C (91°F) in August, while winters cool to 10°C (50°F) in January.
The city receives considerable rain/snowfall, with around 1418 mm (56 in) annually. May is the wettest month. It has very warm summers and cold winters. July is the sunniest month, averaging 10.9 hours of sunshine per day.
Oakville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Oakville - and find the best time to visit.
Monthly Temperature in Oakville
Depending on the time of the year, temperatures range from very warm to chilly in Oakville. Typically, average maximum daytime temperatures range from a very warm 33°C (91°F) in August to a chilly 10°C (50°F) in the coolest month, January.
Nights vary from 23°C (73°F) in August to around -1°C (30°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Oakville
Oakville has a relatively rain/snowy climate with high precipitation levels, averaging 1418 mm (56 in) of rain/snowfall annually. Oakville offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month May (165 mm (6.5 in)) and the driest month August (84 mm (3.3 in)) is not too significant. For more details, please visit our Oakville 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 Oakville
For those who appreciate different seasons, Oakville serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.9 hours of sunshine daily, and embrace the darker days in December, offering only 5.1 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Oakville by Month
The relative humidity is high throughout the year in Oakville.
The city experiences its highest humidity in September, reaching 71%. In March, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Oakville
The average wind speed over the year ranges from 2 m/s (4 knots) to 4 m/s (8 knots). It is lower in August and higher in February, March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Oakville
Each month is rated for comfortable sightseeing weather — mild temperatures and low rainfall. Tap a month for its full averages; your ideal time may differ for a beach or winter trip (see below).
- Best overall: April, May and October
- Warmest weather: June, July and August
- Most sunshine: June and July
- Climate seasons: very warm summers and cold winters
- Best for winter weather: January, with freezing nights around -1°C (30°F).
Frequently asked questions about the climate in Oakville
What is the best time to visit Oakville?
April, May and October typically offer the most optimal weather in Oakville. In contrast, January, July and December tend to have less optimal conditions. Oakville has very warm summers and cold winters.
What temperatures can I expect in Oakville?
Daytime highs range from 10°C (50°F) in January to 33°C (91°F) in August. Nighttime lows range from -1°C (30°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Oakville get?
Annual rainfall is around 1418 mm (56 in). May is the wettest month with 165 mm (6.5 in), while August is the driest with 84 mm (3.3 in).
How sunny is Oakville?
Oakville receives around 2,891 hours of sunshine per year. July is the sunniest month with 326 hours, while December is the cloudiest with just 152 hours. Overall, Oakville enjoys abundant sunshine.
Oakville 3-Day Forecast
Oakville 3-Day Forecast
Oakville on the map
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