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Sarnia Weather in July
Thinking of visiting Sarnia in July? Expect high temperatures reaching 27°C (81°F) during the day, dropping to 19°C (66°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Sarnia in July
Typically, about 9 days will experience rainfall, with an average of 79 mm (3.1 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Sarnia in July
Sarnia in July is worth a visit. The temperature is excellent, with 27°C (81°F) during the day and 19°C (66°F) at night. Summer occurs in July. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 19°C (66°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.If you're inclined towards comfortable temperatures and drier conditions, July is a good time to visit Sarnia.
Sarnia Temperature in July
Min Temperature
19°C (66°F)
Max Temperature
27°C (81°F)
Chance of Rain
31%
Precipitation
79 mm (3.1 in)
Rainy days
9 days
Sarnia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sarnia - and find the best time to visit.
Best Places in Canada in July
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in July →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sarnia in July
Warm temperatures in July make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days.
What To Do in Sarnia in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Sarnia 3-Day Forecast
More climate data for Sarnia
See the full Sarnia climate overview or explore weather in Canada.
Popular in July
Where to go in July - average daytime high across popular destinations.
Niagara Falls
27°C (81°F) Montréal28°C (82°F) Ottawa27°C (81°F) Quebec City
26°C (79°F) Toronto26°C (79°F) Calgary24°C (75°F) Vancouver22°C (72°F) Whistler
19°C (66°F) Bucket list
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