June weather forecast
Cascais, Portugal

June in Cascais translates into a definitive entrance into summer, breaking away from the milder May days. The fine weather makes it the prime time for outdoor activities, with the city basking in an impressive ten hours of sunshine. Rainfall touches its lowest point, down to just 26mm (1.02"), symbolizing the dawn of the driest season. The city gracefully transitions into hotter July, even as the temperature of the sea begins to rise, enhancing its allure for swimming and water sports enthusiasts.

Temperature

With the beginning of June, Cascais's average high-temperature sees a minor increase, transitioning from a pleasant 21°C (69.8°F) in May to a warm 24°C (75.2°F). Throughout the month of June, Cascais witnesses an average temperature of 15°C (59°F).

Rainfall

In Cascais, in June, it is raining for 5 days, with typically 26mm (1.02") of accumulated precipitation. Throughout the year, in Cascais, there are 116 rainfall days, and 841mm (33.11") of precipitation is accumulated.

Sea temperature

In Cascais, Portugal, the average seawater temperature in June is 18.6°C (65.5°F).
Note: Swimming in water at 18.6°C (65.5°F) is not a pleasurable experience for most. The task of managing breathing becomes more challenging as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year in Cascais, Portugal.
On the first day of the month, sunrise is at 06:14 and sunset at 20:56. On the last day of June, sunrise is at 06:16 and sunset at 21:06 WEST.

Sunshine

The average sunshine in June is 10h.

UV index

June and July, with an average maximum UV index of 9, are months with the highest UV index. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 9 during June leads to these instructions:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.