Weather in St. Catharines in December
St. Catharines, Canada averages a high of 3.2°C (37.8°F) and low of -1.5°C (29.3°F) in December, with 12 rain days and 4.4 hours of daily sunshine. Travel score: 39.3/100 (Poor). The best time to visit St. Catharines is August.
High
3°C38°F
Low
-1°C29°F
🌧️
12
rain days
☀️
4.4
hrs/day sunshine
💧
75%
humidity
39— Poor
December in St. Catharines is cold and occasionally wet — challenging weather conditions.
What are the average temperatures in St. Catharines?
How much does it rain in St. Catharines in December?
St. Catharines receives an average of 76.1mm of rainfall across 12 rainy days in December. The annual total is 934.7mm.
What should I pack for St. Catharines in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 3°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -1°C
🧣
Warm scarf
Protect against cold winds
Traveling to Canada in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31