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Porto Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Porto.
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Climate overview of Porto
Rain is mostly seen in autumn and winter (October- March). Winter can be very wet with long periods of rain. Spring (April - June) and early autumn (September) is the best time of year to visit Porto.
Porto Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Porto - and find the best time to visit.
Monthly Temperature in Porto
In Porto, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in August to a moderate 14°C (57°F) in the coolest month, January.
Nights vary from 18°C (64°F) in August to around 8°C (46°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Porto
Porto has a notably wet climate with abundant precipitation, recording 1213 mm (48 in) of rainfall per year. The climate in Porto shows significant variation throughout the year. Expect heavy rainfall in November, the wettest month, with an average of 163 mm (6.4 in) of precipitation over 15 rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 22 mm (0.9 in) of rainfall over 6 rainy days. For more details, please visit our Porto Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Porto
For those who appreciate different seasons, Porto serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.2 hours of sunshine daily, and embrace the darker days in January, offering only 4.1 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Porto
The mean water temperature over the year ranges from 13°C (55°F) in February to 18°C (64°F) in August.
Water temperature over the year
Humidity in Porto by Month
The relative humidity is high throughout the year in Porto.
The city experiences its highest humidity in January, reaching 81%. In July, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Porto
The average wind speed over the year ranges from 4 m/s (8 knots) to 5 m/s (10 knots). It is lower in June, July, August, September and October and higher in January, February, March, April, May, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Porto
For comfortable weather, consider visiting Porto in May, June, July, August and September. Conditions are usually least favourable in January, February, March, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
mixed
Feb
mixed
Mar
mixed
Apr
good
May
excellent
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
very good
Nov
mixed
Dec
mixed
- Best overall: May, June, July, August and September
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: July and August
- Warmest water temperature: July, August, September and October, although the water may still feel cool.
- Seasonal pattern: A distinct dry season from June to August, with warm summers and mild winters
Frequently asked questions about the climate in Porto
What is the best time to visit Porto?
May, June, July, August and September typically offer the most optimal weather in Porto. In contrast, January, February, March, November and December tend to have less optimal conditions. Porto has a distinct dry season from June to August, with warm summers and mild winters.
What temperatures can I expect in Porto?
Daytime highs range from 14°C (57°F) in January to 25°C (77°F) in August. Nighttime lows range from 8°C (46°F) to 18°C (64°F).
How much rain does Porto get?
Annual rainfall is around 1213 mm (48 in). November is the wettest month with 163 mm (6.4 in), while July is the driest with 22 mm (0.9 in).
How sunny is Porto?
Porto receives around 2,465 hours of sunshine per year. July is the sunniest month with 307 hours, while January is the cloudiest with just 122 hours. Overall, Porto enjoys abundant sunshine.
Porto 3-Day Forecast
Porto on the map
Porto is highlighted - select any city to see its climate.
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