Newfoundland & Labrador weather in May 2025

Expect 10°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Newfoundland & Labrador in May. Check more long-term weather averages for Newfoundland & Labrador in May before you book your next holiday to Newfoundland & Labrador in 2025/2026.

  • 10°C maximum daytime temperature in May in Newfoundland & Labrador (St John's)10
    10°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in May in Newfoundland & Labrador (St John's)16
    16 days with some rainfall
  • 2°C minimum night-time temperature in May in Newfoundland & Labrador (St John's)2
    2°C min night temperature
  • 15 hours of daylight per day in May in Newfoundland & Labrador (St John's)15
    15 hours of daylight per day
  • No heat & humidity in May in Newfoundland & Labrador (St John's)0
    No heat & humidity
  • 102 mm monthly rainfall in May in Newfoundland & Labrador (St John's)102
    102 mm of monthly rainfall
  • UV (maximum) index 6 (High) in May in Newfoundland & Labrador (St John's)6
    6 (High) UV index
  • 2°C sea temperature in May in Newfoundland & Labrador (St John's)2
    2°C sea temperature

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The May weather guide for Newfoundland & Labrador (St John's) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Newfoundland & Labrador destinations

Below are average maximum temperatures at popular countries, regions and places in Newfoundland & Labrador in May. Select a holiday destination to see more weather parameters.

All Newfoundland & Labrador destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How warm is it in Newfoundland & Labrador in May?

Daytime temperatures usually reach 10°C in St John's, Newfoundland & Labrador in May, falling to 2°C at night.

How sunny is it in Newfoundland & Labrador in May?

There are normally 5 hours of bright sunshine each day in St John's, Newfoundland & Labrador in May - that's 34% of daylight hours.

Is the sea cold around Newfoundland & Labrador in May?

The average sea temperature around St John's, Newfoundland & Labrador in May is 2°C.

Does it rain in Newfoundland & Labrador in May?

There are usually 16 days with some rain in St John's, Newfoundland & Labrador in May and the average monthly rainfall is 102mm.

Newfoundland & Labrador May sunrise & sunset times

Browse the sunrise and sunset times for Newfoundland & Labrador in May 2025. Select a month to view Newfoundland & Labrador sunrise and sunset times for the next 12 months. The Newfoundland & Labrador sunrise and sunset times shown below are for St John's.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 04:44 19:13
Friday, 16th May 2025 04:22 19:33
Saturday, 31st May 2025 04:08 19:50

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