August weather forecast
Oshawa, Canada

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Weather in August

August continues the summer trend set by July, but with a marginal decrease in temperature. The climate remains largely warm and inviting, and sea temperatures peak, making it ideal for swimming and watersports. Despite being in the latter half of summer, rainfall remains a common feature throughout the month. The city enjoys a healthy measure of sunshine, enabling festive outdoor gatherings and activities.

Temperature

The advent of August sees the average high-temperature at a still moderately hot 23.8°C (74.8°F), subtly shifted from July's 24.4°C (75.9°F). In the month of August, the nighttime temperature dips to a steady average of 16.8°C (62.2°F).

Humidity

In August, the average relative humidity in Oshawa is 78%.

Rainfall

The month with the most rainfall in Oshawa, Canada, is August, when the rain falls for 17.1 days and typically aggregates up to 73mm (2.87") of precipitation.

Snowfall

May through October are months without snowfall in Oshawa.

Sea temperature

August is the month with the warmest seawater in Oshawa, with an average sea temperature of 22.4°C (72.3°F).
Note: Every individual's cold threshold differs, but factors like today's sunshine, wind, and temperature can tip the scales for a delightful swim in 22.4°C (72.3°F) waters. For reference, Olympians swim in waters of 25°C (77°F) to 28°C (82.4°F).

Daylight

The average length of the day in August is 13h and 57min.
On the first day of the month, sunrise is at 6:04 am and sunset at 8:38 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:52 pm EDT.

Sunshine

In Oshawa, the average sunshine in August is 10.4h.

UV index

In Oshawa, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.
Note: In August, the UV index of 5 transforms into the following advice:
Ensure safety - Sun damage prevention is strongly urged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be vigilant! The Sun's UV rays get a boost from sand and water reflections.

Frequently asked questions

What is the average August temperature in Oshawa?

The high-temperature in Oshawa, Canada, during August is 23.8°C (74.8°F) and the low-temperature is 16.8°C (62.2°F).

What is the average humidity in August in Oshawa?

In August, the average relative humidity is 78%.

What is the wettest month in Oshawa?

August is the month with the most rainfall in Oshawa. Rain falls for 17.1 days and accumulates 73mm (2.87") of precipitation.

How many days does it rain in August in Oshawa?

In August, the rain falls for 17.1 days. Throughout August, 73mm (2.87") of precipitation is accumulated.

When it does not snow in Oshawa?

In Oshawa, snow does not fall in May through October.

When is the sea warmest in Oshawa?

August is the month with the warmest seawater, with an average sea temperature of 22.4°C (72.3°F).

What is the sea temperature in August in Oshawa?

In Oshawa, Canada, in August, the average water temperature is 22.4°C (72.3°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 22.4°C (72.3°F) water.

What is the average length of the day in August in Oshawa?

The average day length in August in Oshawa is 13h and 57min.

When are sunrise and sunset in August in Oshawa?

In August, on the first day of the month, sunrise is at 6:04 am and sunset at 8:38 pm. On the last day of the month, in Oshawa, sunrise is at 6:38 am and sunset at 7:52 pm EDT.

How many hours of sunshine does Oshawa have in August?

The average sunshine duration in August is 10.4h.

What is the UV index intensity in August in Oshawa?

In Oshawa, Canada, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in August
Oshawa, Canada

Average temperature in August - Oshawa, Canada
  • Average high temperature in August: 23.8°C

The warmest month (with the highest average high temperature) is July (24.4°C).
The month with the lowest average high temperature is January (-2.9°C).

  • Average low temperature in August: 16.8°C

The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).

Average pressure in August
Oshawa, Canada

Average pressure in August - Oshawa, Canada
  • Average pressure in August: 1014.4mbar

The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is June (1013mbar).

Average wind speed in August
Oshawa, Canada

Average wind speed in August - Oshawa, Canada
  • Average wind speed in August: 11.9km/h

The windiest month (with the highest average wind speed) is January (18.7km/h).
The calmest month (with the lowest average wind speed) is July (11.4km/h).

Average humidity in August
Oshawa, Canada

Average humidity in August - Oshawa, Canada
  • Average humidity in August: 78%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).

Average rainfall in August
Oshawa, Canada

Average rainfall in August - Oshawa, Canada
  • Average rainfall in August: 73mm

The wettest month (with the highest rainfall) is August (73mm).
The driest months (with the least rainfall) are February and November (43mm).

Average rainfall days in August
Oshawa, Canada

Average rainfall days in August - Oshawa, Canada
  • Average rainfall days in August: 17.1 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (7.3 days).

Average snowfall in August
Oshawa, Canada

Average snowfall in August - Oshawa, Canada
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (110mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in August
Oshawa, Canada

Average snowfall days in August - Oshawa, Canada
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in August
Oshawa, Canada

Average sea temperature in August - Oshawa, Canada
  • Average sea temperature in August: 22.4°C

The best month for swimming (with the highest average sea temperature) is August (22.4°C).
The coldest month (with the lowest average sea temperature) is March (2.3°C).

Average daylight in August /
Average sunshine in August
Oshawa, Canada

Average daylight in August / Average sunshine in August - Oshawa, Canada
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in August
Oshawa, Canada

Average sunshine days in August - Oshawa, Canada
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is July (10.4 days).

Average UV index in August
Oshawa, Canada

Average UV index in August - Oshawa, Canada
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in August
Oshawa, Canada

Average cloud cover in August - Oshawa, Canada
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in August
Oshawa, Canada

Average visibility in August - Oshawa, Canada
  • Average visibility in August: 10km

The months with the highest visibility are August and September (10km).
The month with the lowest visibility is January (8km).

Oshawa, Canada

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