Porto weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Good
Best time to visit: May – September
What is the weather like in Porto in March?
In March, Porto is mild: daytime highs average 16 °C, and nights cool down to about 8 °C. The sea averages 13.8 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 131 mm in total. All in all, March is a good month for a holiday in Porto.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 59 | 68 | 77 |
| Day | 14° | 16° | 18° |
| Night | 7° | 8° | 10° |
| Sea | 13° | 14° | 15° |
| Sun | 6 h | 7 h | 8 h |
| Rain days | 10 | 11 | 12 |
More details for March
- Daylight
- 11 h 52 min06:48 – 18:40
- UV index
- 5 · moderateclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 58 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+0Europe/Lisbon
How the score comes together
- Temperatureweight 50 %81 %
- Sunshineweight 20 %67 %
- Few rainy daysweight 30 %48 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Porto in March: quick answers
Is Porto hot in March?
No. In March, Porto is mild: daytime highs average 16 °C and nights drop to about 8 °C.
Can you swim in Porto in March?
Only if you don't mind cold water: in March the sea averages just 13.8 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Porto in March?
Rain is frequent, with about 11 rainy days and 131 mm in total.
Porto month by month
The whole year in PortoAll destinations: Portugal
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)