May weather forecast and climate
Stephenville, Canada

What is the temperature in May in Stephenville?

In Stephenville, Canada, in May, the average high-temperature is 11°C (51.8°F), and the average low-temperature is 2°C (35.6°F).

How many days does it rain in May in Stephenville?

In Stephenville, in May, during 14 rainfall days, 85mm (3.3") of precipitation is typically accumulated.

How cold is the water in May in Stephenville?

In May, the average sea temperature in Stephenville, Canada, is 3.4°C (38.1°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average UV index in May in Stephenville?

The average UV index in May in Stephenville, Canada, is 6.
Average temperature in May - Stephenville, Canada
  • Average high temperature in May: 11°C

Warmest months (with the highest average high temperature) are July and August (20°C).
The month with the lowest average high temperature is February (-4°C).

  • Average low temperature in May: 2°C

Months with the highest average low temperature are July and August (11°C).
The coldest month (with the lowest average low temperature) is February (-12°C).

Average rainfall in May - Stephenville, Canada
  • Average rainfall in May: 85mm

The wettest month (with the highest rainfall) is January (135mm).
The driest month (with the lowest rainfall) is April (73mm).

Average rainfall days in May - Stephenville, Canada
  • Average rainfall days in May: 14 days

The month with the highest number of rainy days is January (25 days).
Months with the lowest number of rainy days are May and June (14 days).

Average sea temperature in May - Stephenville, Canada
  • Average sea temperature in May: 3.4°C

The best month for swimming (with the highest average sea temperature) is August (15.5°C).
The coldest month (with the lowest average sea temperature) is March (-0.3°C).

Average daylight in May / Average sunshine in May - Stephenville, Canada
  • Average daylight in May: 15.3h

The month with the longest days is June (Average daylight: 16.1h).
The month with shortest days is December (Average daylight: 8.4h).

  • Average sunshine in May: 6h

Months with most sunshine are May, June, July and August (Average sunshine: 6h).
The month with least sunshine is December (Average sunshine: 1h).

Average UV index in May - Stephenville, Canada
  • Average UV index in May: 6

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 1).

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