Brockville
Canada
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Brockville, Canada

May, the last month of the spring, in Brockville, is a comfortable month, with average temperature fluctuating between 7.8°C (46°F) and 18.2°C (64.8°F).

Temperature

In Brockville, the average high-temperature in May increases, from a fresh 10.3°C (50.5°F) in April, to a comfortable 18.2°C (64.8°F). The average low-temperature, in May, is 7.8°C (46°F).

Humidity

The average relative humidity in Brockville is 79%.

Rainfall

In Brockville, during May, the rain falls for 16.4 days and regularly aggregates up to 67mm (2.64") of precipitation. In Brockville, during the entire year, the rain falls for 141.7 days and collects up to 669mm (26.34") of precipitation.

Snowfall

January through May, October through December are months with snowfall in Brockville. May is the last month it regularly snows in Brockville. During 0.5 snowfall days, Brockville aggregates 2mm (0.08") of snow. Throughout the year, there are 56.1 snowfall days, and 622mm (24.49") of snow is accumulated.

Daylight

In May, the average length of the day in Brockville is 14.8h.

Sunshine

In Brockville, Canada, the average sunshine in May is 8.5h.

UV index

The average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In May, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in May in Brockville?

In May, in Brockville, Canada, the average high-temperature is 18.2°C (64.8°F), and the average low-temperature is 7.8°C (46°F).

What is the average humidity in May in Brockville?

In May, the average relative humidity in Brockville is 79%.

How much does it rain in Brockville in May?

In Brockville, Canada, in May, it is raining for 16.4 days, with typically 67mm (2.64") of accumulated precipitation.

What is the last month it snows in Brockville?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Brockville aggregates 2mm (0.08") of snow.

What is the average length of the day in May in Brockville?

In May, the average length of the day in Brockville, Canada, is 14.8h.

How long on average sun shines in May in Brockville?

In Brockville, the average sunshine in May is 8.5h.

How high is the UV index in May in Brockville?

In May, the average daily maximum UV index in Brockville, Canada, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to the Sun's UV rays.
Average temperature in May - Brockville, Canada
  • Average high temperature in May: 18.2°C

The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-4.4°C).

  • Average low temperature in May: 7.8°C

The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).

Average humidity in May - Brockville, Canada
  • Average humidity in May: 79%

Months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).

Average rainfall in May - Brockville, Canada
  • Average rainfall in May: 67mm

The wettest month (with the highest rainfall) is August (70mm).
Driest months (with the lowest rainfall) are March and November (43mm).

Average rainfall days in May - Brockville, Canada
  • Average rainfall days in May: 16.4 days

The month with the highest number of rainy days is July (17.1 days).
The month with the lowest number of rainy days is January (5 days).

Average snowfall in May - Brockville, Canada
  • Average snowfall in May: 2mm

The month with the highest snowfall is February (157mm).
Months with the lowest snowfall are June, July, August and September (0mm).

Average snowfall days in May - Brockville, Canada
  • Average snowfall days in May: 0.5 days

Months with the highest number of snowfall days are January and February (13.3 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in May / Average sunshine in May - Brockville, Canada
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with shortest days is December (Average daylight: 8.9h).

  • Average sunshine in May: 8.5h

Months with most sunshine are July and August (Average sunshine: 10.1h).
The month with least sunshine is February (Average sunshine: 2.7h).

Average UV index in May - Brockville, Canada
  • Average UV index in May: 4

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