Hamilton weather in August 2025

Expect 79°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Hamilton in August. Check more long-term weather averages for Hamilton in August before you book your next holiday to Ontario in 2025/2026.

  • 79°F maximum daytime temperature in August in Hamilton79
    79°F max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in August in Hamilton9
    9 days with some rainfall
  • 59°F minimum night-time temperature in August in Hamilton59
    59°F min night temperature
  • 14 hours of daylight per day in August in Hamilton14
    14 hours of daylight per day
  • Low heat & humidity in August in HamiltonL
    Low heat & humidity
  • 3.6 inches monthly rainfall in August in Hamilton3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 7 (High) in August in Hamilton7
    7 (High) UV index
  • 70°F sea temperature in August in Hamilton70
    70°F sea temperature

More about Hamilton

Hamilton by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

Travelbag: Latest holiday sale offers worldwide

  • Explore latest sale offers on holidays in 2024/2025
  • Filter deals by continent, star rating & holiday type
  • Including Dubai, Caribbean, North America, Asia & Pacific
Go to Travelbag deal >>

View all Travelbag offers

TravelbagHoliday deal finder

The August weather guide for Ontario (Hamilton) 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)

Back to top

More about Canada

How hot is it in Hamilton in August?

Daytime temperatures usually reach 79°F in Hamilton in August with low heat and humidity, falling to 59°F at night.

How sunny is it in Hamilton in August?

There are normally 8 hours of bright sunshine each day in Hamilton in August - that's 57% of daylight hours.

How warm is the sea around Hamilton in August?

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

Does it rain in Hamilton in August?

There are usually 9 days with some rain in Hamilton in August and the average monthly rainfall is 3.6 inches.

Hamilton August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 05:10 19:41
Saturday, 16th August 2025 05:26 19:20
Sunday, 31st August 2025 05:43 18:56

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^