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Cascais Weather in June
Thinking of visiting Cascais in June? Expect pleasant temperatures reaching 21°C (70°F) during the day, dropping to 17°C (63°F) at night, with minimal rainfall.
Rainfall in Cascais in June
You can expect rain on roughly 5 days based on historical data, averaging 11 mm (0.4 in) for the month. The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in Cascais in June
June is a excellent month in Cascais, with 21°C (70°F) during the day and 17°C (63°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows of 17°C (63°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Cascais in June
The month enjoys around 342 hours of sunshine, creating mostly sunny days with good weather conditions.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Cascais Temperature in June
Min Temperature
17°C (63°F)
Max Temperature
21°C (70°F)
Chance of Rain
17%
Precipitation
11 mm (0.4 in)
Rainy days
5 days
Humidity
74%
Sunshine
342 hours
Percentage Sunshine
77%
Cascais Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cascais - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cascais typically stay consistent throughout June, with daily highs averaging around 21°C (70°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 17°C (63°F).
Average temperatures in June
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Historical weather records for Cascais in June
Browse day-by-day weather records for Cascais spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cascais historical weather extremes in June
The extremes listed below come from historical weather data collected in Cascais from 1977 through 2026.
- The lowest daytime temperature in June was 15°C (59°F), recorded on June 3, 1984.
- The lowest overnight temperature recorded in June was 10°C (50°F) (June 3, 1998).
Best Places in Portugal in June
Find out more about the weather in Portugal and which places have the best travel conditions in this month. See all of Portugal in June →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Cascais in June
Pleasant temperatures in June mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Cascais in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping10/10 -
Outdoor sports10/10
Cascais 3-Day Forecast
More climate data for Cascais
Temperature Rainfall Sunshine Humidity
See the full Cascais climate overview or explore weather in Portugal.
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Where to go in June - average daytime high across popular destinations.
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