St. John's weather in March
March in St. John's: warm, dry, with clean air — an excellent time to visit.
#3 of 12 months in St. John's · #136 of 604 destinations to visit in March · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
St. John's climate normals — March
| Daytime high | 27°C / 80°F | 🌤 warm |
|---|---|---|
| Nighttime low | 24°C / 76°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 28 mm / 1.1 in | ☀️ dry |
| Rainy days | 11 days | |
| Humidity | 73% | 💧 humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is St. John's?
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St. John's in March — FAQ
- Is March a good time to visit St. John's?
- March in St. John's: warm, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for St. John's on SeasonMap's comfort score (85/100).
- What is the weather like in St. John's in March?
- In March, St. John's averages a daily high of 26.8°C and a low of 24.2°C, with about 27.9 mm of rain over roughly 10.8 rainy days.
- What is the air quality in St. John's in March?
- St. John's has a mean US Air Quality Index of about 37 in March.