Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
May
Weather in May
Temperature
Welland's May weather brings a rise in high-temperatures, moving from a fresh 10.7°C (51.3°F) in April to a comfortable 18.2°C (64.8°F). An average low-temperature of 9.3°C (48.7°F) is expected during May.Humidity
In Welland, the average relative humidity in May is 77%.Rainfall
In Welland, in May, during 16.9 rainfall days, 78mm (3.07") of precipitation is typically accumulated. In Welland, during the entire year, the rain falls for 170.3 days and collects up to 804mm (31.65") of precipitation.Snowfall
Months with snowfall in Welland are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Welland aggregates 7mm (0.28") of snow. Throughout the year, in Welland, there are 64.1 snowfall days, and 576mm (22.68") of snow is accumulated.Daylight
The average length of the day in May is 14h and 40min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:18 pm. On the last day of May, in Welland, sunrise is at 5:40 am and sunset at 8:48 pm EDT.
Sunshine
In Welland, the average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Welland in May?
What is the average humidity in May?
How many days does it rain in May in Welland?
What is the last month it snows?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Welland have in May?
What is the UV index intensity in May?
Average temperature in May
Welland, Canada
- Average high temperature in May: 18.2°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 May: 9.3°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 May
Welland, Canada
- Average pressure in May: 1015.4mbar
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 May
Welland, Canada
- Average wind speed in May: 13.4km/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 May
Welland, Canada
- Average humidity in May: 77%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is September (75%).
Average rainfall in May
Welland, Canada
- Average rainfall in May: 78mm
The wettest month (with the highest rainfall) is July (86mm).
The driest month (with the least rainfall) is September (53mm).
Average rainfall days in May
Welland, Canada
- Average rainfall days in May: 16.9 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 May
Welland, Canada
- Average snowfall in May: 7mm
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 May
Welland, Canada
- Average snowfall days in May: 0.3 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 May /
Average sunshine in May
Welland, Canada
- Average daylight in May: 14h and 4min
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 May: 8h and 5min
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 May
Welland, Canada
- Average sunshine days in May: 12.4 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 May
Welland, 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 and December (UV index 1).
Average cloud cover in May
Welland, Canada
- Average cloud cover in May: 42
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 May
Welland, Canada
- Average visibility in May: 9km
The month with the highest visibility is September (10km).
The months with the lowest visibility are January and February (8km).
