July weather forecast
Lisbon, Portugal

July is the epitome of summer in Lisbon. The city records the highest temperature of the year, reaching an average peak of 28.2°C (82.8°F). Even though the city experiences a minimal amount of rain, it does not deter visitors from flocking to the beaches to enjoy the warm sea temperatures. Despite having peak sun exposure in the day, this period also marks the highest UV index, suggesting that tourists should take extra precautions when venturing outdoors. Warm evenings with longer daylight hours underline the appeal of outdoor dining, beach parties, and night markets.

Temperature

As Lisbon steps into July, the average high-temperature is measured at a still moderately hot 28.2°C (82.8°F), displaying minor differences from June's 25.7°C (78.3°F). During the nights in July, Lisbon observes an average low-temperature of 18.2°C (64.8°F).

Rainfall

July is the month with the least rainfall in Lisbon. Rain falls for 2 days and accumulates 4mm (0.16") of precipitation.

Sea temperature

In Lisbon, Portugal, in July, the average water temperature is 18.9°C (66°F).
Note: Most people do not find swimming enjoyable in water of 18.9°C (66°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Lisbon, Portugal, the average length of the day in July is 14h and 34min.
On the first day of July in Lisbon, sunrise is at 06:15 and sunset at 21:05. On the last day of the month, sunrise is at 06:37 and sunset at 20:48 WEST.

Sunshine

The months with the most sunshine are July and August, with an average of 11h of sunshine.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 9. A UV Index value of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 9 in July interprets into the following recommendations:
Prioritize your safety. Without precautions, skin and eyes might get hurt quickly. 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. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. To reduce the harmful impacts of sun exposure, use a sunscreen with at least 30 SPF. It can save you from sunburns and immune system damage.