Cascais: weather and best time to visit

Cascais (Portugal) reaches its warmest daytime temperatures in August at around 24°C; the coolest month is January at around 14°C. The sea is warmest in September at about 19°C.

Best time to visit

Things to do in Cascais

Tours, tickets and activities for your trip.

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Cascais climate, month by month

MonthDay °CNight °CSea °CRain dSun hBeachCityHiking
Jan14°10°15°108395275
Feb15°10°15°89466182
Mar17°12°15°810466781
Apr17°13°15°912477080
May20°15°16°612548385
Jun22°17°18°314649291
Jul24°18°18°114709487
Aug24°19°19°113729585
Sep23°18°19°411678985
Oct21°16°18°99548080
Nov17°13°17°108396374
Dec15°11°16°107375373

Rain d = average rain days per month · Sun h = average sunshine hours per day · scores 0–100, higher is better.

Every month in detail

Cascais in January

Daytime highs around 14°C, nights near 10°C. January is the coldest month of the year. Expect about 10 rain days and 8 hours of sunshine per day. The sea is cold at 15°C — not swimming weather.

Beach: poorCity: mixedHiking: goodMore destinations for January

Cascais in February

Daytime highs around 15°C, nights near 10°C. Expect about 8 rain days and 9 hours of sunshine per day. The sea is cold at 15°C — not swimming weather.

Beach: mixedCity: goodHiking: excellentMore destinations for February

Cascais in March

Daytime highs around 17°C, nights near 12°C. Expect about 8 rain days and 10 hours of sunshine per day. The sea is cold at 15°C — not swimming weather.

Beach: mixedCity: goodHiking: excellentMore destinations for March

Cascais in April

Daytime highs around 17°C, nights near 13°C. Expect about 9 rain days and 12 hours of sunshine per day. The sea is cold at 15°C — not swimming weather.

Beach: mixedCity: goodHiking: excellentMore destinations for April

Cascais in May

Daytime highs around 20°C, nights near 15°C. Expect about 6 rain days and 12 hours of sunshine per day. The sea is cold at 16°C — not swimming weather.

Beach: mixedCity: excellentHiking: excellentMore destinations for May

Cascais in June

Daytime highs around 22°C, nights near 17°C. No month gets more sunshine. Expect about 3 rain days and 14 hours of sunshine per day. The sea is cold at 18°C — not swimming weather.

Beach: goodCity: excellentHiking: excellentMore destinations for June

Cascais in July

Daytime highs around 24°C, nights near 18°C. It is also the driest month of the year. Expect about 1 rain day and 14 hours of sunshine per day. The sea is on the fresh side at 18°C.

Beach: goodCity: excellentHiking: excellentMore destinations for July

Cascais in August

Daytime highs around 24°C, nights near 19°C. August is the warmest month of the year. Expect about 1 rain day and 13 hours of sunshine per day. The sea is on the fresh side at 19°C.

Beach: goodCity: excellentHiking: excellentMore destinations for August

Cascais in September

Daytime highs around 23°C, nights near 18°C. The sea is at its warmest now. Expect about 4 rain days and 11 hours of sunshine per day. The sea is on the fresh side at 19°C.

Beach: goodCity: excellentHiking: excellentMore destinations for September

Cascais in October

Daytime highs around 21°C, nights near 16°C. Expect about 9 rain days and 9 hours of sunshine per day. The sea is on the fresh side at 18°C.

Beach: mixedCity: excellentHiking: excellentMore destinations for October

Cascais in November

Daytime highs around 17°C, nights near 13°C. It is the rainiest month of the year. Expect about 10 rain days and 8 hours of sunshine per day. The sea is cold at 17°C — not swimming weather.

Beach: poorCity: goodHiking: goodMore destinations for November

Cascais in December

Daytime highs around 15°C, nights near 11°C. Expect about 10 rain days and 7 hours of sunshine per day. The sea is cold at 16°C — not swimming weather.

Beach: poorCity: mixedHiking: goodMore destinations for December

Related destinations

More in Portugal: Faro · Lagos · Albufeira · Lisbon · Porto · Funchal

Similar climate: Marseille, France · San Francisco, United States · Menorca, Spain · Cannes, France

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