Porto climate at a glance
Porto sees average daytime highs ranging from 14°C in January to 24°C in July. Around 1412 mm of precipitation falls over roughly 126 wet days a year, peaking in December (231 mm) and easing off in July (16 mm). July is the sunniest month at about 13 hours of sunshine.
Porto temperature & rainfall by month
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Weather seasons in Porto
Grouped by the monthly travel score — purely weather-based, not crowd or price data.
Porto climate, month by month
Averages computed from ERA5 reanalysis data, 2019–2024. Daylight on the 15th: 14.7 h in July. Reuse this data freely with attribution — download as JSON or CSV.
| Month | High | Low | Rain days | Rainfall | Sun/day | Humidity | Score |
|---|---|---|---|---|---|---|---|
| January | 14°C | 7°C | 10.7 | 162 mm | 6.6 h | 78% | 6.2 · Fair |
| February | 16°C | 9°C | 9.3 | 104 mm | 8.1 h | 77% | 7.9 · Good |
| March | 16°C | 9°C | 12.8 | 128 mm | 9 h | 77% | 7.7 · Good |
| April | 18°C | 11°C | 12.8 | 132 mm | 10.5 h | 79% | 8.5 · Excellent |
| May | 20°C | 13°C | 9.5 | 69 mm | 11.9 h | 77% | 9.4 · Excellent |
| June | 21°C | 15°C | 9.3 | 60 mm | 12.7 h | 81% | 9.5 · Excellent |
| July | 24°C | 16°C | 3.7 | 16 mm | 13.3 h | 78% | 10.0 · Excellent |
| August | 24°C | 16°C | 2.8 | 16 mm | 11.9 h | 80% | 10.0 · Excellent |
| September | 23°C | 16°C | 7.7 | 89 mm | 10.6 h | 76% | 9.8 · Excellent |
| October | 20°C | 14°C | 15 | 226 mm | 7.6 h | 82% | 7.8 · Good |
| November | 17°C | 11°C | 15.8 | 181 mm | 6.5 h | 82% | 6.8 · Fair |
| December | 15°C | 9°C | 16.2 | 231 mm | 6.1 h | 81% | 5.4 · Fair |
Frequently asked questions
What is the best time to visit Porto?
The best time to visit Porto is May–September, when daytime highs average around 24°C with about 3.7 rainy days per month.
What is the hottest month in Porto?
July is the hottest month in Porto, with average highs of 24°C.
What is the rainiest month in Porto?
December is the rainiest month in Porto, with around 231 mm of rainfall over 16.2 rainy days.
Where should you go next month?
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