July weather forecast
Porto, Portugal

July in Porto continues the city's summer pattern, with temperatures soaring to their peak. The temperature climbs from June levels to reach a high of 25.3°C (77.5°F). Sunny days are all but guaranteed with a scant 20mm (0.79") of rainfall. People flock to the beaches to take advantage of the warm sea temperatures and extended daylight hours. The city embodies summer living, with vibrant street life and bustling beaches.

Temperature

The transition into July in Porto marks the average high-temperature at a still moderately hot 25.3°C (77.5°F), differing minimally from June's 23.5°C (74.3°F). The average temperature in Porto drops to a refreshing 15.9°C (60.6°F) during the night in the month of July.

Rainfall

July is the month with the least rainfall in Porto. Rain falls for 6 days and accumulates 20mm (0.79") of precipitation.

Sea temperature

In July, the average sea temperature is 17.3°C (63.1°F).
Note: Swimming in 17.3°C (63.1°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In July, the average length of the day in Porto is 14h and 48min.
On the first day of July in Porto, Portugal, sunrise is at 06:05 and sunset at 21:11. On the last day of the month, sunrise is at 06:29 and sunset at 20:52 WEST.

Sunshine

July has the most sunshine of the year, with an average of 9.9h of sunshine.

UV index

The months with the highest UV index in Porto are June through August, with an average maximum UV index of 8. A UV Index reading of 8 to 10 represents a very high health risk from unsafe exposure to UV radiation for the average person.
Note: In July, a daily maximum UV index of 8 leads to the following instructions:
Be constantly cautious; skin and eyes can be quickly affected if left unprotected. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.