Porto weather in March 2026

Q: How hot is it in Porto in March?

Daytime temperatures usually reach 18°C in Porto in March, falling to 10°C at night.

Q: How sunny is it in Porto in March?

There are normally 7 hours of bright sunshine each day in Porto in March - that's 56% of daylight hours.

Q: How warm is the sea around Porto in March?

The average sea temperature around Porto in March is 15°C.

Q: Does it rain in Porto in March?

There are usually 13 days with some rain in Porto in March and the average monthly rainfall is 68mm.

Expect daytime maximum temperatures of 16°C in Porto, Portugal in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 112 mm of rainfall in the month.

16
16°C max day temperature
6
6 hours of sunshine per day
15
15 days with some rainfall
7
7°C min night temperature
12
12 hours of daylight per day
0
No heat & humidity
112
112 mm of monthly rainfall
4
4 (Moderate) UV index
14
14°C sea temperature

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The March weather guide for Portugal (Porto) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)