May weather forecastBelleville, Canada
May
Weather in May
The last month of the spring, May, is a comfortable month in Belleville, Canada, with temperature in the range of an average low of 8.2°C (46.8°F) and an average high of 17.1°C (62.8°F).Temperature
Belleville sees an increase in the average high-temperature with the arrival of May, moving from April's chilly 9.5°C (49.1°F) to an enjoyable 17.1°C (62.8°F). An average low-temperature of 8.2°C (46.8°F) is noted during the month of May.Humidity
April, May, July through September, with an average relative humidity of 75%, are the least humid months in Belleville, Canada.Rainfall
In May, in Belleville, Canada, the rain falls for 13.3 days. Throughout May, 51mm (2.01") of precipitation is accumulated. Throughout the year, there are 145 rainfall days, and 595mm (23.43") of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Belleville is 14h and 47min.On the first day of May in Belleville, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:45 pm EDT.
Sunshine
The average sunshine in May in Belleville is 9.2h.UV index
In Belleville, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Belleville, Canada
- Average high temperature in May: 17.1°C
The warmest month (with the highest average high temperature) is July (25.5°C).
The month with the lowest average high temperature is January (-3°C).
- Average low temperature in May: 8.2°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 (-9°C).
Average pressure in May
Belleville, Canada
- Average pressure in May: 1015mbar
The months with the highest atmospheric pressure are March and November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1012.8mbar).
Average wind speed in May
Belleville, Canada
- Average wind speed in May: 12.2km/h
The windiest month (with the highest average wind speed) is January (16.4km/h).
The calmest month (with the lowest average wind speed) is July (11.1km/h).
Average humidity in May
Belleville, Canada
- Average humidity in May: 75%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, May, July, August and September (75%).
Average rainfall in May
Belleville, Canada
- Average rainfall in May: 51mm
The wettest month (with the highest rainfall) is October (76mm).
The driest month (with the least rainfall) is February (36mm).
Average rainfall days in May
Belleville, Canada
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Belleville, Canada
- Average snowfall in May: 0mm
The month with the highest snowfall is December (105mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in May
Belleville, Canada
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Belleville, Canada
- Average daylight in May: 14h and 48min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in May: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in May
Belleville, Canada
- Average sunshine days in May: 15.5 days
The month with the most sunshine days is March (15.9 days).
The month with the least sunshine days is August (12.9 days).
Average UV index in May
Belleville, Canada
- Average UV index in May: 4
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 May
Belleville, Canada
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Belleville, Canada
- Average visibility in May: 9km
The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, June, October, November and December (9km).
