Saint Catharines Weather in September

Saint Catharines in September averages 22°C (72°F) during the day and 16°C (61°F) at night. Keep in mind that quite a bit of rainfall is expected this month.

Rainfall in Saint Catharines in September

Typically, you can expect about 10 days of rain this month, with 93 mm (3.7 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Saint Catharines in September

September in Saint Catharines is generally perfect, with days reaching 22°C (72°F) and nights settling around 16°C (61°F). Overall, the month follows a fairly predictable daily temperature pattern. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Saint Catharines in September

Expect a lot of sunshine this month, with about 206 hours of sun. These sunny conditions add to the overall experience.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July, August and September typically offer the best weather for Saint Catharines.

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

Saint Catharines Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 34%  

Precipitation 93 mm (3.7 in)  

Rainy days 10 days  

Humidity 74% *  

Sunshine 206 hours *  

Percentage Sunshine 55% *  

* Data from: Buffalo, the United States of America (42 KM, 26 Miles).

What to Wear in Saint Catharines in September

For Saint Catharines 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Saint Catharines in September

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

Cycling

9/10

Walking

9/10

Barbeque

8/10

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 Saint Catharines's climate page.

More climate data for Saint Catharines

Temperature Rainfall Sunshine Humidity

See the full Saint Catharines climate overview or explore weather in Canada.