Europe › Portugal › Porto
30-year normals (1991-2020)
Porto has a Mediterranean climate, classified as Csb in the Köppen system. The warmest month is August with an average high of 26°C, while the coldest month is January with lows dropping to 6°C. The annual temperature range of 20°C reflects moderate seasonal variation.
The driest month is August with only 4 rain days and 30mm of precipitation. For travellers, August through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 65% to 65% throughout the year.
Based on temperature and rainfall data, the best months to visit Porto are July, August, June. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
26°C
August
Coldest Month
6°C
January
Driest Month
4 days
August
Annual Range
20°C
6° to 26°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 13°C | 6°C | 12 | 7h | View |
| February | 14°C | 6°C | 10 | 8h | View |
| March | 16°C | 8°C | 10 | 10h | View |
| April | 17°C | 10°C | 12 | 11h | View |
| May | 20°C | 12°C | 11 | 12h | View |
| June | 23°C | 15°C | 6 | 13h | View |
| July | 25°C | 17°C | 4 | 14h | View |
| August | 26°C | 17°C | 4 | 12h | View |
| September | 24°C | 16°C | 6 | 11h | View |
| October | 20°C | 13°C | 13 | 9h | View |
| November | 16°C | 10°C | 13 | 7h | View |
| December | 14°C | 7°C | 13 | 7h | View |
January
12 rain days, 7h sun
February
10 rain days, 8h sun
March
10 rain days, 10h sun
April
12 rain days, 11h sun
May
11 rain days, 12h sun
June
6 rain days, 13h sun
July
4 rain days, 14h sun
August
4 rain days, 12h sun
September
6 rain days, 11h sun
October
13 rain days, 9h sun
November
13 rain days, 7h sun
December
13 rain days, 7h sun
Porto in August
Data Sources for Porto
Climate normals represent 30-year averages (1991-2020). Individual years may vary.