Cascais, Portugal Weather and Climate

Geographical location

Cascais is located in the Lisbon region. Portugal’s capital Lisbon is about 25 km from Cascais (as the crow flies). The coastal city is a medium-sized place in the Lisbon region of Portugal with a population of around 36,436 people and is one of the largest places in Portugal.

Once a picturesque fishing village and now a colorful and pretty resort with elegant pedestrian streets, fashionable shops, restaurants and bars. The coast around Cascais offers a variety of beaches from family-friendly with calm waters and soft sand to wild and rough surfing beaches.

The coastal city is surrounded by popular beaches like Guincho Beach to the west and the lush Sintra Mountains to the north. Part of the coast is rocky and attracts tourists for its seascape and other natural attractions such as Boca do Inferno.

It is also becoming a popular destination for golfers with more than 10 golf courses nearby. Surfing, sailing, windsurfing and kite surfing are also popular in the Cascais region because of the favorable weather, wind and sea conditions. In 2007, Cascais was the official host of the ISAF World Championship in sailing for inflatables and racing yachts.

Climate in Cascais

The region is blessed with glorious weather for three quarters of the year, starting in early spring and extending well into late autumn. The temperature suitable for staying on the beach lasts from May to mid- September. Early spring and late autumn are ideal for exploring the region and more suitable for an active vacation.

In midsummer (June – August) the weather is hot and dry with intense sun. This high season can be a bit tiring for exploring, sightseeing, or for young children. The coastal city’s proximity to the Atlantic Ocean means that there is often a cooling breeze at night and the area doesn’t experience the extremes like other Mediterranean countries.

Cascais sea temperature is always cool, even in summer when the water temperature only reaches 21 degrees. The winter months can be unpredictable with an equal number of bright, clear days and gray, humid days. In general, the weather is too cold to spend time on the beach, but great bargains can be found in winter.

When is the best time to visit Cascais?

The best time to visit Cascais is during the early summer and late summer months before and after the peak of the tourist season. This is a great time of year to visit Cascais as it is a wonderful way to combine time on the beaches with exploring Sintra and Lisbon.

Cascais is a great vacation destination that offers stunning beaches, wonderful day trips and a vibrant nightlife. Cascais has a fantastic climate that is suitable for tourists from early spring to late autumn. In general, we recommend the best travel time for the region from mid- April to mid- October.

Temperatures, precipitation, sunshine

Jan Feb March Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime temperature 14 ° C 15 ° C 18 ° C 19 ° C 23 ° C 25 ° C 28 ° C 28 ° C 26 ° C 22 ° C 18 ° C 15 ° C
Night temperature 8 ° C 9 ° C 10 ° C 11 ° C 13 ° C 16 ° C 17 ° C 18 ° C 17 ° C 15 ° C 11 ° C 9 ° C
Water temperature 14 ° C 14 ° C 15 ° C 16 ° C 17 ° C 17 ° C 18 ° C 19 ° C 19 ° C 18 ° C 16 ° C 15 ° C
Precipitation in mm 110 111 69 64 39 21st 5 6 26 80 114 118
Rainy days 10 10 7 5 3 2 1 1 3 7 10 11
Hours of sunshine 6 7 8 9 10 11 12 12 10 7 6 5
Sunrise 7:55 7:30 6:50 7:00 6:25 6:10 6:25 6:50 7:20 7:45 7:20 7:50
Sunset 17:40 18:15 18:45 20:15 20:40 21:05 21:05 20:35 19:45 19:00 17:25 17:15


The annual average temperature is 16.9 ° C. For comparison: Munich reaches an average of 8.6 ° C, in Berlin it is 9.6 ° C. The warmest month is August (23 ° C), coldest month of January with mean values of 11 ° C. The maximum water temperature is 19 ° C. Pleasant bathing is possible from temperatures of around 21 ° C. The months of May, June, July, August, September and October have a water temperature of at least 17 ° C. Bathing is then possible to a limited extent.


The annual precipitation is 763 mm on 70 days with precipitation. For comparison: In Munich, 967 mm, in Berlin 570 mm, precipitation is measured annually. There is no rainy season, i.e. months with more than 175 mm of precipitation. Snowfall is generally not expected in any month.


As our climate table shows, July is the sunniest month with an average of 12 hours of sunshine per day. On average over the year, the sun shines for 8.5 hours per day. For comparison: In Munich and Berlin, the sun shines an average of 4.7 hours per day throughout the year.

Cities nearby

The following larger towns are nearby and have a similar climate: Lisbon, Sintra, Loures, Amadora, Amadora, Almada, Oeiras, Seixal, Odivelas, Vila Franca de Xira, Setúbal and Setúbal.

Sights & attractions

Today there is a large marina and several small sandy beaches in and around the city. The coastal city is easy to reach from Lisbon by car (A5 Lisboa-Cascais motorway or the scenic “marginal” road) or by frequent commuter trains. It has the ruins of a castle, an art and marine museum, as well as parks and the charming cobbled streets of the historic center. The city has many hotels and apartments as well as many good restaurants with different prices.

It’s a good base for those visiting Lisbon and its surroundings who prefer to stay outside of the city but in an equally urban and sophisticated setting.

If you want to explore the east, you can take the motorway or the 30-minute train to Lisbon’s Cais do Sodré station and visit the many museums, parks and neighborhoods like Alfama. If you feel the urge to travel even further, Tires has a municipal airport and Lisbon Portela International Airport is just 45 minutes away.

Cascais weather in March, April and May

Average daily temperatures between 18 ° C and 23 ° C can be expected over the next three months. In Cascais, it gets warmest in May, while March is a little cooler.

Do you want to go on a beach holiday? The water temperatures are in March, April and May 15-17 ° C.

The expected rainfall is around 7 days in March, around 5 days in April and around 3 days in May.

In the period from March to May the sun shines on average between 8 and 10 hours a day. The sunniest weather is in May in Cascais, but with less sun you will have to get by in March.

Cascais, Portugal Weather and Climate
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