Summerside weather in August 2025

Expect daytime maximum temperatures of 23°C in Summerside, Prince Edward Island in August based on long-term weather averages. There are 8 hours of sunshine per day on average with 12 days with some rainfall and typically 87 mm of rainfall in the month.

  • 23°C maximum daytime temperature in August in Summerside23
    23°C max day temperature
  • 8 hours of sunshine per day
  • 12 days with some rainfall in August in Summerside12
    12 days with some rainfall
  • 14°C minimum night-time temperature in August in Summerside14
    14°C min night temperature
  • 14 hours of daylight per day in August in Summerside14
    14 hours of daylight per day
  • No heat & humidity in August in Summerside0
    No heat & humidity
  • 87 mm monthly rainfall in August in Summerside87
    87 mm of monthly rainfall
  • UV (maximum) index 7 (High) in August in Summerside7
    7 (High) UV index
  • 18°C sea temperature in August in Summerside18
    18°C sea temperature

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The August weather guide for Prince Edward Island (Summerside) 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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How hot is it in Summerside in August?

Daytime temperatures usually reach 23°C in Summerside in August, falling to 14°C at night.

How sunny is it in Summerside in August?

There are normally 8 hours of bright sunshine each day in Summerside in August - that's 55% of daylight hours.

How warm is the sea around Summerside in August?

The average sea temperature around Summerside in August is 18°C.

Does it rain in Summerside in August?

There are usually 12 days with some rain in Summerside in August and the average monthly rainfall is 87mm.

Summerside August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:57 19:45
Saturday, 16th August 2025 05:15 19:22
Sunday, 31st August 2025 05:34 18:55

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