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
- 🏖 Beach
- 🏛 City trip
- 🥾 Hiking
Things to do in Cascais
Tours, tickets and activities for your trip.
Cascais climate, month by month
| Month | Day °C | Night °C | Sea °C | Rain d | Sun h | Beach | City | Hiking |
|---|---|---|---|---|---|---|---|---|
| Jan | 14° | 10° | 15° | 10 | 8 | 39 | 52 | 75 |
| Feb | 15° | 10° | 15° | 8 | 9 | 46 | 61 | 82 |
| Mar | 17° | 12° | 15° | 8 | 10 | 46 | 67 | 81 |
| Apr | 17° | 13° | 15° | 9 | 12 | 47 | 70 | 80 |
| May | 20° | 15° | 16° | 6 | 12 | 54 | 83 | 85 |
| Jun | 22° | 17° | 18° | 3 | 14 | 64 | 92 | 91 |
| Jul | 24° | 18° | 18° | 1 | 14 | 70 | 94 | 87 |
| Aug | 24° | 19° | 19° | 1 | 13 | 72 | 95 | 85 |
| Sep | 23° | 18° | 19° | 4 | 11 | 67 | 89 | 85 |
| Oct | 21° | 16° | 18° | 9 | 9 | 54 | 80 | 80 |
| Nov | 17° | 13° | 17° | 10 | 8 | 39 | 63 | 74 |
| Dec | 15° | 11° | 16° | 10 | 7 | 37 | 53 | 73 |
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