Ottawa weather in August (Illinois, United States of America)
What can you expect from the weather in Ottawa during August? Here's what the weather might have in store during this month.
In August, Ottawa generally has high temperatures and high rainfall. August falls within the summer season. Throughout the day, temperatures typically settle at around 28°C. But by evening, they drop to around 17°C.
Ottawa in August usually receives high rainfall, averaging around 127 mm for the month. Based on our climate data of the past 30 years, about 10 days of rain are anticipated.
In case you lean more towards enjoying temperate temperatures and rain-free days July and September typically offer the most optimal weather. In contrast, January, February, March, November and December tend to have less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Ottawa climate page with graphs.
Ottawa, monthly averages in August
Min Temperature
17°C
Max Temperature
28°C
Chance of Rain
34%
Precipitation
127 mm
Rainy days
10 days
Where to go in the United States of America in August
Find out more about the weather in the United States of America in August and which places have the best weather conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in Ottawa in August?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in August.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in Ottawa.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.
