Kingston weather in August 2025

Expect 77°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Kingston in August. Check more long-term weather averages for Kingston in August before you book your next holiday to Ontario in 2025/2026.

  • 77°F maximum daytime temperature in August in Kingston77
    77°F max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in August in Kingston11
    11 days with some rainfall
  • 59°F minimum night-time temperature in August in Kingston59
    59°F min night temperature
  • 14 hours of daylight per day in August in Kingston14
    14 hours of daylight per day
  • No heat & humidity in August in Kingston0
    No heat & humidity
  • 3.2 inches monthly rainfall in August in Kingston3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Kingston7
    7 (High) UV index
  • 70°F sea temperature in August in Kingston70
    70°F sea temperature

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The August weather guide for Ontario (Kingston) 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)  |  Imperial (°F)

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How hot is it in Kingston in August?

Daytime temperatures usually reach 77°F in Kingston in August with no heat and humidity, falling to 59°F at night.

How sunny is it in Kingston in August?

There are normally 8 hours of bright sunshine each day in Kingston in August - that's 56% of daylight hours.

How warm is the sea around Kingston in August?

The average sea temperature around Kingston in August is 70°F.

Does it rain in Kingston in August?

There are usually 11 days with some rain in Kingston in August and the average monthly rainfall is 3.2 inches.

Kingston August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 04:54 19:30
Saturday, 16th August 2025 05:11 19:09
Sunday, 31st August 2025 05:28 18:43

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