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Hamilton weather in August 2025
Expect 26°C 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.
- 2626°C max day temperature
- 8 hours of sunshine per day
- 99 days with some rainfall
- 1515°C min night temperature
- 1414 hours of daylight per day
- LLow heat & humidity
- 9191 mm of monthly rainfall
- 77 (High) UV index
- 2121°C sea temperature
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Recommended for Ontario
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 / mm) | Imperial (°F / inches)
More about Canada
How hot is it in Hamilton in August?
Daytime temperatures usually reach 26°C in Hamilton in August with low heat and humidity, falling to 15°C 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 21°C.
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 91mm.
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 |
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