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The best time to visit Cascais
May, June, July, August and September — daytime highs around 22°C. Every number on this page is measured, not guessed.
Cascais month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | 15°C | 10°C | 9 | |
| February | 16°C | 11°C | 9 | |
| March | 17°C | 12°C | 10 | |
| April | 18°C | 13°C | 9 | Shoulder |
| May | 20°C | 15°C | 7 | Best |
| June | 21°C | 17°C | 8 | Best |
| July | 23°C | 17°C | 1 | Best |
| August | 23°C | 18°C | 1 | Best |
| September | 22°C | 18°C | 9 | Best |
| October | 22°C | 17°C | 12 | Shoulder |
| November | 18°C | 13°C | 10 | |
| December | 16°C | 12°C | 14 |
The short version
Warmest: July, around 23°C by day. Coolest: January, around 15°C by day and 10°C at night. Wettest: December with about 14 wet days. Driest: July with about 1.
If you want fewer people: April, October sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Cascais?
The best months are May, June, July, August and September, when daytime highs sit around 22°C.
What is the hottest month in Cascais?
July, with daytime highs around 23°C.
What is the wettest month in Cascais?
December, with about 14 wet days. The driest is July with about 1.
When is the cheapest time to visit Cascais?
Prices follow the weather. The months either side of the best ones — April, October — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Cascais, Lisbon District. Source: Open-Meteo. Hotel and activity links are partner links — the price you pay is the same.