Waterloo Weather in September

September in Waterloo brings high temperatures, with daytime highs of 22°C (72°F) and nights around 10°C (50°F). Quite a bit of rainfall is expected, around 86 mm (3.4 in), so pack an umbrella.

Rainfall in Waterloo in September

You can expect rain on around 11 days based on historical patterns, with 86 mm (3.4 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Waterloo in September

Weather in Waterloo is at its perfect in September. Highs reach 22°C (72°F), while nights settle around 10°C (50°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Waterloo in September

The city usually sees around 178 hours of sunlight, indicating a moderately sunny period.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Waterloo.

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For a detailed overview over the year and the best time to visit Canada, check out our Waterloo's climate page.

Waterloo Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 37%  

Precipitation 86 mm (3.4 in)  

Rainy days 11 days  

Sunshine 178 hours *  

Percentage Sunshine 48% *  

* Data from: Hamilton, Canada (57 KM, 35 Miles).

What to Wear in Waterloo in September

For Waterloo in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Waterloo in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Canada, check out our Waterloo's climate page.

More climate data for Waterloo

Temperature Rainfall Sunshine

See the full Waterloo climate overview or explore weather in Canada.