Porto, Portugal Climate & Monthly Averages
The climate of Porto
Weather in Porto is shaped by its oceanic climate - expect mild temperatures year-round with regular rainfall. July afternoons typically reach 76°F (24°C), while January highs hover near 56°F (14°C). Annual precipitation averages 52.1 inches (1323 mm) over about 116 rainy days.
Climate quick facts
- Hottest month: July - highs near 76°F (24°C)
- Coldest month: January - highs near 56°F (14°C)
- Record high: 99°F (37°C) · Record low: 32°F (0°C) (2015–2024)
- Wettest month: October (13 rainy days) · Sunniest: July (13.4 h sun/day)
- Climate type: oceanic - mild temperatures year-round with regular rainfall
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 76°F (24°C) and overnight lows stay near 62°F (17°C). The coolest month is January, with typical highs of 56°F (14°C) and lows around 45°F (7°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as 32°F (0°C).
Rain, sun and snow
October is usually the wettest month. It brings about 7.2 inches (183 mm) of rain over 13 days, while July is the driest. July brings the most sunshine, averaging 13.4 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 56° | 45° | 12 | 6.4 in | 6.6 h/day | 79% |
| February | 58° | 46° | 10 | 4.7 in | 7.9 h/day | 78% |
| March | 60° | 47° | 13 | 5.8 in | 9.0 h/day | 77% |
| April | 64° | 51° | 12 | 5.3 in | 10.7 h/day | 78% |
| May | 68° | 55° | 9 | 3.3 in | 11.8 h/day | 77% |
| June | 71° | 59° | 8 | 2.0 in | 13.0 h/day | 81% |
| July | 76° | 62° | 3 | 0.5 in | 13.4 h/day | 78% |
| August | 76° | 62° | 3 | 0.5 in | 12.1 h/day | 77% |
| September | 74° | 60° | 6 | 2.7 in | 10.8 h/day | 77% |
| October | 69° | 57° | 13 | 7.2 in | 8.1 h/day | 80% |
| November | 62° | 51° | 14 | 6.6 in | 6.8 h/day | 82% |
| December | 58° | 48° | 14 | 7.1 in | 6.4 h/day | 81% |
Porto month by month
Porto weather in January
January brings highs around 56°F (14°C), lows near 45°F (7°C), about 12 wet days - typically the coldest month of the year in Porto.
Porto weather in February
February brings highs around 58°F (15°C), lows near 46°F (8°C), about 10 wet days.
Porto weather in March
March brings highs around 60°F (16°C), lows near 47°F (9°C), about 13 wet days.
Porto weather in April
April brings highs around 64°F (18°C), lows near 51°F (10°C), about 12 wet days.
Porto weather in May
May brings highs around 68°F (20°C), lows near 55°F (13°C), about 9 wet days.
Porto weather in June
June brings highs around 71°F (22°C), lows near 59°F (15°C), about 8 wet days.
Porto weather in July
July brings highs around 76°F (24°C), lows near 62°F (17°C), about 3 wet days - typically the hottest month and the driest month and the sunniest month of the year in Porto.
Porto weather in August
August brings highs around 76°F (25°C), lows near 62°F (17°C), about 3 wet days.
Porto weather in September
September brings highs around 74°F (24°C), lows near 60°F (16°C), about 6 wet days.
Porto weather in October
October brings highs around 69°F (21°C), lows near 57°F (14°C), about 13 wet days - typically the wettest month of the year in Porto.
Porto weather in November
November brings highs around 62°F (17°C), lows near 51°F (11°C), about 14 wet days.
Porto weather in December
December brings highs around 58°F (15°C), lows near 48°F (9°C), about 14 wet days.
Seasons in Porto
Spring (March through May)
Spring in Porto is mild, with daytime highs averaging 64°F (18°C) and nights around 51°F (11°C); expect showers on roughly 35 days across the season.
Summer (June through August)
Summer in Porto is mild and warm, with daytime highs averaging 75°F (24°C) and nights around 61°F (16°C); rain falls on about 14 days over the three months.
Fall (September through November)
Fall in Porto is mild and warm, with daytime highs averaging 68°F (20°C) and nights around 56°F (13°C); expect showers on roughly 32 days across the season.
Winter (December through February)
Winter in Porto is mild, with daytime highs averaging 58°F (14°C) and nights around 46°F (8°C); expect showers on roughly 35 days across the season.
Climate questions, answered
What is the average temperature in Porto?
Is Porto hot in summer?
Is Porto cold in winter?
How many rainy days does Porto get in a year?
Best time to visit Porto
The best time to visit Porto is generally June to September, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 74°F (24°C).
Pack for Porto with a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 62°F (17°C).
Porto temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.