Cascais Weather & Climate: Best Time to Visit
The climate in Cascais, Lisbon Region, Portugal, is remarkably consistent, with temperatures year-round averaging 19°C (66°F). The warmest month is August at 22°C (72°F), and the coolest is February at 16°C (61°F).
The city receives around 624 mm (25 in) of rainfall per year. It experiences a distinct dry season from June to September. November is the wettest month and July the driest. Sunshine peaks in July, when the city sees around 12.8 hours of sunshine per day.
Monthly Temperature in Cascais
In Cascais temperatures are generally consistent throughout the year. On average, daytime temperatures range from a comfortable 22°C (72°F) in August to a moderate 16°C (61°F) in February.
Nighttime temperatures range from 18°C (64°F) in August to 12°C (54°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cascais
On average, Cascais receives a reasonable amount of rainfall, with an annual precipitation of 624 mm (25 in). The seasons in Cascais bring significant changes in precipitation. The wettest month, November, receives moderate rainfall, with an average of 95 mm (3.7 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 3.1 mm (0.1 in) over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Cascais Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Cascais
In Cascais, summer days are longer and more sunny, with daily sunshine hours peaking at 12.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.4 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Cascais by Month
The relative humidity is high throughout the year in Cascais.
The city experiences its highest humidity in January, reaching 82%. In July, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Cascais 3-Day Forecast
Check the conditions for any month of the year.
