Weather in Sarnia in March
Sarnia, Canada averages a high of 5.1°C (41.2°F) and low of -3.3°C (26.1°F) in March, with 9 rain days and 8.1 hours of daily sunshine. Travel score: 52.3/100 (Mixed). The best time to visit Sarnia is August.
High
5°C41°F
Low
-3°C26°F
🌧️
9
rain days
☀️
8.1
hrs/day sunshine
💧
71%
humidity
52— Mixed
March in Sarnia is cold and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Sarnia?
How much does it rain in Sarnia in March?
Sarnia receives an average of 56.6mm of rainfall across 9 rainy days in March. The annual total is 825mm.
What should I pack for Sarnia in March?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 5°C
🧶
Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around -3°C
🧣
Warm scarf
Protect against cold winds
Traveling to Canada in March?
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