Click on a day for an hourly weather forecast
The temperatures in Cascais in July are comfortable with low of 18°C and and high up to 26°C.
As it is almost never rain during July in Cascais the weather is perfect for hanging out outside and exploring all that Cascais has to offer.
Our weather forecast can give you a great sense of what weather to expect in Cascais in July 2025.
If you’re planning to visit Cascais in the near future, we highly recommend that you review the 14 day weather forecast for Cascais before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 15° / 10° | 3 | 28 | 0 | 35 mm | Good | Cascais in January |
| February | 16° / 10° | 3 | 26 | 0 | 34 mm | Good | Cascais in February |
| March | 18° / 11° | 3 | 28 | 0 | 39 mm | Good | Cascais in March |
| April | 19° / 13° | 2 | 28 | 0 | 34 mm | Good | Cascais in April |
| May | 22° / 15° | 1 | 30 | 0 | 23 mm | Good | Cascais in May |
| June | 24° / 17° | 0 | 30 | 0 | 9 mm | Perfect | Cascais in June |
| July | 26° / 18° | 0 | 31 | 0 | 2 mm | Perfect | Cascais in July |
| August | 28° / 18° | 0 | 31 | 0 | 3 mm | Perfect | Cascais in August |
| September | 26° / 18° | 1 | 29 | 0 | 19 mm | Perfect | Cascais in September |
| October | 23° / 17° | 2 | 29 | 0 | 42 mm | Perfect | Cascais in October |
| November | 18° / 13° | 3 | 27 | 0 | 50 mm | Good | Cascais in November |
| December | 16° / 11° | 3 | 28 | 0 | 44 mm | Good | Cascais in December |