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Hamilton weather in August

Long-run climate averages for Hamilton, Ontario in August, plus what the forecast models say for the days ahead.

August at a glance

In August, Hamilton averages 25°C by day and 16°C at night. The wettest month is usually July.

August in Hamilton averages a daytime high of 25°C and an overnight low of 16°C, which reads as warm for this part of the world. It is among the three warmest months of the year here. Across the whole year Hamilton sees roughly 1011 mm of precipitation.

Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live Hamilton forecast with every model compared and how much they currently agree.

Hamilton weather by month

what to expect in Hamilton through the year

Here is Hamilton's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Hamilton by season.

Jan
-4°
Cold
Feb
-5°
Cold
Mar
-2°
Cold
Apr
14°
Cool
May
20°
Mild
Jun
24°
15°
Warm
Jul
27°
17°
Warm
Wettest
Aug
25°
16°
Warm
Sep
23°
14°
Warm
Oct
17°
Mild
Nov
Cool
Dec
-2°
Cold

Common questions

How warm is Hamilton in August?
Hamilton averages a daytime high of 25°C in August, with overnight lows around 16°C. These are long-run climate averages, not a forecast — for the actual days ahead see the live model comparison.
Is August a good time to visit Hamilton?
The most comfortable time to visit Hamilton is usually May, June, August and September, when daytime highs sit in the pleasant 16-26°C range and the heaviest July rain is behind you.
Does it rain a lot in Hamilton in August?
The wettest month in Hamilton is usually July. Across the year the city sees roughly 1011 mm of precipitation.

Hamilton in other months

More about Hamilton