Weather in Ontario, Canada in August

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Visiting Ontario, Canada in August

August is one of the best months to visit Ontario for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in August is slightly warmer than the previous month. August has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 59.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 8.4 hours of sunshine per day.

August has total rainfall of 1.6cm (0.6inches) making it extremely dry with very few light showers and most days are rain free. There are just 4.1 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between.

Sea temperatures are a cold 13°C (55°F). August is too cold for swimming in Ontario for any length of time, unless you have a wetsuit. The sea temperature in August is marginally warmer than the previous month and temperatures continue to rise slightly into September.

Also consider visiting Ontario in one of the other best months of June, July, September, for the best beach weather. Also consider one of our other suggestions for August.

Can you sunbathe in Ontario in August?

Yes, August is a good time for sunbathing in Ontario.

August has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 59.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 8.4 hours of sunshine per day. August has total rainfall of 1.6cm (0.6inches) making it extremely dry with very few light showers and most days are rain free. There are just 4.1 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between.

More about August temperature and sunshine.

Can you swim in Ontario in August?

No, August is too cold for swimming in Ontario for any length of time, with the sea water at 13°C (55°F), unless you have a wetsuit.

More about August sea temperatures.

Is August a good time to holiday in Ontario?

Yes, August is a good time for a holiday in Ontario.

August has average maximum temperatures of 21°C (69°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 59.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 8.4 hours of sunshine per day. August has total rainfall of 1.6cm (0.6inches) making it extremely dry with very few light showers and most days are rain free. There are just 4.1 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days and rainy days are few and far between. Sea temperatures are a cold 13°C (55°F). August is too cold for swimming in Ontario for any length of time, unless you have a wetsuit.

More about the August temperatures and sunshine.

Is Ontario warm in August?

Yes, Ontario is nice and warm and makes sunbathing pleasant on clear days in August.

The average maximum temperature in Ontario in August is 21°C (69°F). The average maximum temperature is 20°C (68°) in the previous month and 18°C (65°F) in the next month.

The average temperature in Ontario in August is 18°C (64°F). The average temperature is 18°C (64°F) in the previous month and 16°C (60°F) in the next month.

More info about the August temperatures and sunshine.

How sunny is Ontario in August?

The average day light hours per day in Ontario in August are 14.2. The sunshine percentage is 59.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 8.4 hours of sunshine per day.

More about August sunshine.

Temperature in Ontario in August

The weather in August is slightly warmer than the previous month. The average maximum temperature in Ontario in August is 21°C (69°F). The average maximum temperature is 20°C (68°F) in the previous month and 18°C (65°F) in the next month.

The average temperature in Ontario in August is 18°C (64°F). The average temperature is 18°C (64°F) in the previous month and 16°C (60°F) in the next month.

The average minimum temperature in Ontario in August is 16°C (60°F). The minimum temperature is 15°C (59°F) in the previous month and 13°C (55°F) in the next month.

Sunshine in Ontario in August

The days in August are shorter than the previous month and days continue to get shorter into September. August has far fewer hours of sunshine than the previous month and hours of sunshine continue to drop markedly into September. During August the average day light hours are 14.2 per day in Ontario. The sunshine percentage is 59.7% making it quite sunny but with occasional periods of cloudy and overcast skies. There are 8.4 hours of sunshine per day.

The ultraviolet index in Ontario in August is typically 7.7 during August. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Ontario in August

The average sea water temperature in Ontario in August is 13°C (55.4°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in August is marginally warmer than the previous month and temperatures continue to rise slightly into September.

Rainfall in Ontario in August

August weather is slightly drier than the previous month. August has fewer days of rain than the previous month. The average total rainfall in Ontario in August is 1.6cm (0.6inches) and on average there are 4.1 rainy days in August making it a very dry time to visit the beach.

Humidity in Ontario in August

The maximum dew point (an indicator of humidity) in Ontario in August is 16°C (61°F) which is OK for most but slightly uncomfortable for some. The dew point is 16°C (60°F) in the previous month and 14°C (14°F) in the next month.

The average maximum relative humidity in Ontario in August is typically 90.2%. The maximum relative humidity is 91.4% in the previous month and 89.4% in the next month.

The average relative humidity in Ontario in August is typically 78%. The average relative humidity is 79.1% in the previous month and 77.3% in the next month.

Wind Speed in Ontario in August

The average maximum wind speed in Ontario in August is typically 24KM/H (15MPH). The average maximum wind speed is 23KM/H (14MPH) in the previous month and 27KM/H (17MPH) in the next month.

The average wind speed in Ontario in August is typically 15KM/H (9MPH). The average wind speed is 13KM/H (8MPH) in the previous month and 17KM/H (10MPH) in the next month.

The average wind direction in Ontario in August is from the South West.

Monthly Averages

Suggested Beaches in August

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Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

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Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.