Month-by-month table
| Month | High / low (°C) | Rainy days | Sun per day | Sea (°C) |
|---|---|---|---|---|
| January | 14 / 6 | about 12 | 4 h | 14 |
| February | 15 / 7 | about 11 | 5 h | 14 |
| March | 17 / 8 | about 11 | 6 h | 14 |
| April | 19 / 10 | about 11 | 7 h | 14 |
| May | 21 / 12 | about 9 | 8 h | 15 |
| June | 24 / 14 | about 5 | 9 h | 16 |
| July | 26 / 16 | about 3 | 10 h | 18 |
| August | 26 / 16 | about 3 | 10 h | 19 |
| September | 25 / 15 | about 6 | 8 h | 19 |
| October | 21 / 12 | about 11 | 6 h | 18 |
| November | 17 / 9 | about 12 | 4 h | 16 |
| December | 14 / 7 | about 13 | 4 h | 15 |
What it means for your trip
- Winter (December to February): cool, damp, few crowds. Pack a raincoat. See Porto in January or Porto in December.
- Spring (March to May): changeable in March-April, very pleasant in May (Porto in May).
- Summer (June to August): hot, very dry, sometimes morning sea fog (Porto in July, Porto in August).
- Autumn (September to November): September is often the best month; rain returns in October (Porto in September, Porto in October).
Swimming
The water rarely passes 19°C: swimming is mostly June to September, on the Porto and Matosinhos beaches.
If it rains
See what to do in Porto when it rains. In fair weather, the six-bridges cruise is a good way to see the city from the water.
FAQ
Which is the hottest month? July and August.
Which is the wettest month? December, January and November.
When to go? See the best time to visit Porto.
La rédaction Porto Authority, 29/10/2026.
