Porto weather in March
March in Porto: cool, rainy, with clean air — an excellent time to visit.
#7 of 12 months in Porto · #223 of 604 destinations to visit in March · comfort 80/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Porto climate normals — March
| Daytime high | 16°C / 62°F | 🙂 cool |
|---|---|---|
| Nighttime low | 9°C / 47°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 90 mm / 3.6 in | 🌧 rainy |
| Rainy days | 10 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 9°C / 47°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 12 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Porto in March — FAQ
- Is March a good time to visit Porto?
- March in Porto: cool, rainy, with clean air — an excellent time to visit. It ranks #7 of 12 months for Porto on SeasonMap's comfort score (80/100).
- What is the weather like in Porto in March?
- In March, Porto averages a daily high of 16.4°C and a low of 8.5°C, with about 90.4 mm of rain over roughly 10 rainy days.
- What is the air quality in Porto in March?
- Porto has a mean US Air Quality Index of about 48 in March.