Porto Weather & Climate: Best Time to Visit
Porto has a warm oceanic climate. During summer temperatures can sometimes rise above 40°C (104°F), but because of the low humidity it feels pleasant and not to hot. Also the wind coming from the Atlantic ocean brings a cool breeze to the city.
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.
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)
Porto 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Porto
Porto's weather is most enjoyable during May, June, July, August and September, with comfortable temperatures from 20°C (68°F) to 25°C (77°F). The moderate conditions ensure pleasant weather for exploring the area. Expect varied weather during this period with rainfall between 22 mm (0.9 in) and 98 mm (3.9 in), providing a good balance of sunny and rainy days.The wettest months are November and December, when precipitation is at its highest. Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
