May weather forecastDundas, Canada
May
Weather in May
The last month of the spring, May, is a refreshing month in Dundas, Canada, with temperature in the range of an average high of 18.1°C (64.6°F) and an average low of 9°C (48.2°F).Temperature
Dundas's weather shows a temperature rise with the arrival of May, moving from a cool 10.7°C (51.3°F) in April to a comfortable 18.1°C (64.6°F). Dundas experiences a mean temperature of 9°C (48.2°F) during May nights.Humidity
The average relative humidity in May is 76%.Rainfall
In Dundas, during May, the rain falls for 18.7 days and regularly aggregates up to 68mm (2.68") of precipitation. In Dundas, during the entire year, the rain falls for 167.5 days and collects up to 727mm (28.62") of precipitation.Snowfall
Months with snowfall in Dundas are January through May, October through December. May is the last month it regularly snows in Dundas. During 0.3 snowfall days, in May, Dundas aggregates 4mm (0.16") of snow. Throughout the year, there are 66 snowfall days, and 560mm (22.05") of snow is accumulated.Daylight
In May, the average length of the day is 14h and 42min.On the first day of May, sunrise is at 6:11 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:52 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In Dundas, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dundas, Canada
- Average high temperature in May: 18.1°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 (-2.4°C).
- Average low temperature in May: 9°C
The month with the highest average low temperature is July (16.8°C).
The coldest month (with the lowest average low temperature) is January (-7.7°C).
Average pressure in May
Dundas, Canada
- Average pressure in May: 1015.4mbar
The months with the highest atmospheric pressure are March and November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).
Average wind speed in May
Dundas, Canada
- Average wind speed in May: 13.3km/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 (11.1km/h).
Average humidity in May
Dundas, Canada
- Average humidity in May: 76%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Dundas, Canada
- Average rainfall in May: 68mm
The wettest month (with the highest rainfall) is April (77mm).
The driest month (with the least rainfall) is September (42mm).
Average rainfall days in May
Dundas, Canada
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (7.2 days).
Average snowfall in May
Dundas, Canada
- Average snowfall in May: 4mm
The month with the highest snowfall is February (176mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in May
Dundas, Canada
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (15.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Dundas, Canada
- Average daylight in May: 14h and 42min
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 0min).
- Average sunshine in May: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in May
Dundas, Canada
- Average sunshine days in May: 11 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (9.2 days).
Average UV index in May
Dundas, Canada
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Dundas, Canada
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Dundas, Canada
- Average visibility in May: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and February (8km).
