August weather forecastDunnville, Canada
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Dunnville, Canada, with an average temperature ranging between min 17.4°C (63.3°F) and max 25°C (77°F).Temperature
The advent of August denotes an average high-temperature of a still moderately hot 25°C (77°F), subtly different from July's 25.7°C (78.3°F). Dunnville records an average temperature drop to an enjoyable 17.4°C (63.3°F) in August.Humidity
The average relative humidity in August in Dunnville is 76%.Rainfall
In Dunnville, in August, during 17.9 rainfall days, 77mm (3.03") of precipitation is typically accumulated. In Dunnville, during the entire year, the rain falls for 170.3 days and collects up to 804mm (31.65") of precipitation.Snowfall
June through September are months without snowfall in Dunnville, Canada.Daylight
The average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 6:10 am and sunset at 8:39 pm. On the last day of August, sunrise is at 6:42 am and sunset at 7:54 pm EDT.
Sunshine
The months with the most sunshine in Dunnville, Canada, are July and August, with an average of 10.3h of sunshine.UV index
The average daily maximum UV index in August in Dunnville is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in August translates into this advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dunnville, Canada
- Average high temperature in August: 25°C
The warmest month (with the highest average high temperature) is July (25.7°C).
The month with the lowest average high temperature is January (-1.5°C).
- Average low temperature in August: 17.4°C
The month with the highest average low temperature is July (17.5°C).
The coldest month (with the lowest average low temperature) is January (-6.7°C).
Average pressure in August
Dunnville, Canada
- Average pressure in August: 1014.9mbar
The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in August
Dunnville, Canada
- Average wind speed in August: 12.1km/h
The windiest month (with the highest average wind speed) is January (19.6km/h).
The calmest month (with the lowest average wind speed) is July (11.6km/h).
Average humidity in August
Dunnville, Canada
- Average humidity in August: 76%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).
Average rainfall in August
Dunnville, Canada
- Average rainfall in August: 77mm
The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in August
Dunnville, Canada
- Average rainfall days in August: 17.9 days
The month with the highest number of rainy days is July (18.7 days).
The months with the least rainy days are January and February (8.1 days).
Average snowfall in August
Dunnville, Canada
- Average snowfall in August: 0mm
The month with the highest snowfall is February (179mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in August
Dunnville, Canada
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dunnville, Canada
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in August
Dunnville, Canada
- Average sunshine days in August: 10.7 days
The month with the most sunshine days is September (12.6 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in August
Dunnville, 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
Dunnville, Canada
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Dunnville, Canada
- Average visibility in August: 9km
The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).
