Yearly weather and climate in Cascais, Portugal

The yearly weather in Cascais runs from around 11°C in February to 23°C in August. August is the driest month at 1 rainy days; March the wettest at 16. Here is the annual climate data, so you know what you are packing for.

Best time to visit

The best weather is typically in Jun, Jul, Aug, Sep, with mild temperatures and lower rainfall.

Sunshine

Expect up to 13.1 hours of clear skies in Jul, but only 7.2 hours in Jan. Pack sunglasses and SPF accordingly.

Rainfall

It rains the most in Mar (160mm over 16 days). A reliable rain jacket is a must-have if visiting then.

Day-to-night swings

Temperatures typically drop by 5°C from day to night. Make sure to pack layers for the evenings.

Average temperatures and rainfall

Daily highs and lows in Cascais, averaged over 10 years of recorded weather, with the number of days it typically rains.

  1. 1660°1152°14Jan
  2. 1661°1152°10Feb
  3. 1661°1253°16Mar
  4. 1966°1457°11Apr
  5. 2067°1558°9May
  6. 2271°1762°8Jun
  7. 2373°1763°3Jul
  8. 2374°1864°1Aug
  9. 2272°1762°6Sep
  10. 2271°1763°15Oct
  11. 1865°1457°10Nov
  12. 1660°1152°11Dec

Bars span the average daily low to high. Numbers under the drop are rainy days per month (1mm or more) — hover a month for its total rainfall. Aug is typically driest at 1 days (2mm); Mar the wettest at 16 days (160mm).

Average monthly temperature and rainfall in Cascais
MonthAverage highAverage lowRainy daysTotal rainfall
Jan16°C11°C14142mm
Feb16°C11°C1086mm
Mar16°C12°C16160mm
Apr19°C14°C1165mm
May20°C15°C931mm
Jun22°C17°C841mm
Jul23°C17°C310mm
Aug23°C18°C12mm
Sep22°C17°C631mm
Oct22°C17°C15118mm
Nov18°C14°C10132mm
Dec16°C11°C1179mm

Weather data by Open-Meteo.com

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