Cascais monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Cascais

Cascais average temperature chart (Celsius) Cascais average temperature chart (Fahrenheit)
Average monthly temperatures in Cascais (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.2 15.1 16.9 18.2 20.8 23.6 26.2 26.6 25.4 21.7 17.2 14.6
°F 57.5 59.2 62.5 64.8 69.4 74.6 79.2 79.9 77.7 71 63 58.2

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Cascais monthly rainfall chart (mm) Cascais monthly rainfall chart (inches)
Average monthly rainfall in Cascais (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 123 121 78 71 46 26 7 8 31 89 122 120
inches 4.9 4.8 3.1 2.8 1.8 1 0.3 0.3 1.2 3.5 4.8 4.7
Rainy days 15 14 13 12 9 5 2 2 6 11 13 14

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Cascais

Cascais average daily sunshine chart
Average daily sunshine Cascais
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.1 5.7 7.1 8.2 9.8 10.6 11.9 11.6 9.2 7.3 5.7 5.1

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Cascais average minimum / maximum temperatures (Celsius) Cascais average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Cascais (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 8.1 9 9.7 10.8 12.8 15.2 17 17.2 16.6 14.4 11 8.9
Max °C 14.3 15.3 17.1 18.4 21 23.9 26.5 26.9 25.6 21.9 17.4 14.7
Min °F 46.6 48.1 49.5 51.4 55 59.3 62.5 62.9 61.9 57.8 51.8 48
Max °F 52.2 53.8 56.1 58.3 62.4 67.1 71.1 71.6 70 64.6 57.6 53.2

Sea temperature

The graph below shows the average sea temperature.

Cascais average sea temperature chart (Celsius) Cascais average sea temperature chart (Fahrenheit)
Average sea temperature around Cascais in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 15.7 15.1 15.2 15.8 16.9 18.7 19.8 20.4 20.4 19.7 18.3 16.8
°F 60.2 59.2 59.3 60.5 62.5 65.6 67.7 68.7 68.7 67.5 64.9 62.2

Wind speed

The graph below shows the average wind speed.

Cascais average winspeed by month (km/h) Cascais average winspeed by month (mph)
Average wind speed in Cascais (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 15 14 14 14 14 14 14 13 13 13 14
mph 9 9 9 9 9 9 9 9 8 8 8 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Cascais relative humidity averages
Average relative humidity in Cascais
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
81% 79% 73% 71% 68% 68% 65% 64% 69% 74% 78% 80%
Cascais

Other monthly averages

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Cascais weather stats

Cascais weather statistics
Hottest month: August 26.6°C 79.9°F
Driest month: July 7mm 0.3ins
Sunniest month: August 11.6hrs
Coldest month: January 14.2°C 57.6°F
Wettest month: January 123mm 4.8ins
Warmest sea: September 20.4°C 68.7°F
Map showing location of Cascais (38.6979, -9.42146)

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