Climate guide for Cascais, Portugal

Best Time to Visit
Cascais

How to read the score (0–10)
05810
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Travel Tips

Plan ahead for Cascais
Check local weather forecasts and seasonal crowd levels before traveling to Cascais.

Things to do in Cascais

Cascais, Portugal. Live activities and tours from GetYourGuide, matched to this destination.

Frequently asked

When is the best time to visit Cascais, Portugal?
The best months to visit Cascais are May, June, July, August, September. May is the single peak month with a climate score of 9.2/10 based on temperature, rainfall, humidity, daylight and historical sunny days.
What is the weather like in Cascais year-round?
Cascais has a beach and coastal climate profile. Average monthly temperatures range from 11°C in January to 32°C in July, with climate scores between 4.5 and 9.2 out of 10.
Which months should I avoid in Cascais?
The lowest-scoring months in Cascais are January (4.5/10), February (4.5/10), March (4.5/10). These months typically combine less comfortable temperatures, higher rainfall or fewer sunny days.
When is the rainy season in Cascais?
January is the wettest month in Cascais, averaging about 90 mm of rainfall. May is the driest, at roughly 30 mm.
Which is the sunniest month in Cascais?
May sees the most sun in Cascais, with about 23 sunny days on average - ideal for outdoor plans.
Is Cascais good for beach and coastal travel?
Cascais is profiled as a beach and coastal destination in Portugal. Its highest-scoring window (May, June, July, August, September) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Cascais calculated?
Each month is rated 0-10 using ERA5 climate normals for Cascais: temperature comfort, precipitation, humidity, daylight hours, and historical sunny days - weighted for a beach and coastal trip.

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