Stephenville weather in August 2025

Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Stephenville in August. Check more long-term weather averages for Stephenville in August before you book your next holiday to Newfoundland & Labrador in 2025/2026.

  • 20°C maximum daytime temperature in August in Stephenville20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in August in Stephenville15
    15 days with some rainfall
  • 11°C minimum night-time temperature in August in Stephenville11
    11°C min night temperature
  • 14 hours of daylight per day in August in Stephenville14
    14 hours of daylight per day
  • No heat & humidity in August in Stephenville0
    No heat & humidity
  • 118 mm monthly rainfall in August in Stephenville118
    118 mm of monthly rainfall
  • UV (maximum) index 6 (High) in August in Stephenville6
    6 (High) UV index
  • 16°C sea temperature in August in Stephenville16
    16°C sea temperature

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The August weather guide for Newfoundland & Labrador (Stephenville) 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.

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

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More about Canada

How hot is it in Stephenville in August?

Daytime temperatures usually reach 20°C in Stephenville in August, falling to 11°C at night.

How sunny is it in Stephenville in August?

There are normally 6 hours of bright sunshine each day in Stephenville in August - that's 42% of daylight hours.

How warm is the sea around Stephenville in August?

The average sea temperature around Stephenville in August is 16°C.

Does it rain in Stephenville in August?

There are usually 15 days with some rain in Stephenville in August and the average monthly rainfall is 118mm.

Stephenville August sunrise & sunset times

Browse the sunrise and sunset times for Stephenville in August 2025. Select a month to view Stephenville sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:59 20:01
Saturday, 16th August 2025 05:20 19:37
Sunday, 31st August 2025 05:41 19:08

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