Annual Weather Averages Near Cascais
Averages are for Lisbon Portela Airport, which is 16 miles from Cascais.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Cascais
High Temp: 83 °F
Low Temp: 47 °F
Mean Temp: 63 °F
Precipitation: 1.75"
Humidity: 74%
Dew Point: 53 °F
Wind: 17 mph
Pressure: 30.08 "Hg
Visibility: 6 mi
January Climate & Weather Averages in Cascais
High Temp: 58 °F
Low Temp: 47 °F
Mean Temp: 53 °F
Precipitation: 2.74"
Humidity: 84%
Dew Point: 47 °F
Wind: 14 mph
Pressure: 30.20 "Hg
Visibility: 6 mi
February Climate & Weather Averages in Cascais
High Temp: 60 °F
Low Temp: 48 °F
Mean Temp: 54 °F
Precipitation: 1.96"
Humidity: 80%
Dew Point: 47 °F
Wind: 15 mph
Pressure: 30.18 "Hg
Visibility: 6 mi
March Climate & Weather Averages in Cascais
High Temp: 65 °F
Low Temp: 51 °F
Mean Temp: 58 °F
Precipitation: 1.82"
Humidity: 74%
Dew Point: 48 °F
Wind: 16 mph
Pressure: 30.09 "Hg
Visibility: 6 mi
April Climate & Weather Averages in Cascais
High Temp: 67 °F
Low Temp: 54 °F
Mean Temp: 60 °F
Precipitation: 1.96"
Humidity: 74%
Dew Point: 50 °F
Wind: 17 mph
Pressure: 30.00 "Hg
Visibility: 6 mi
May Climate & Weather Averages in Cascais
High Temp: 72 °F
Low Temp: 57 °F
Mean Temp: 65 °F
Precipitation: 1.56"
Humidity: 70%
Dew Point: 53 °F
Wind: 18 mph
Pressure: 30.02 "Hg
Visibility: 6 mi
June Climate & Weather Averages in Cascais
High Temp: 78 °F
Low Temp: 62 °F
Mean Temp: 70 °F
Precipitation: 0.37"
Humidity: 67%
Dew Point: 56 °F
Wind: 19 mph
Pressure: 30.04 "Hg
Visibility: 6 mi
July Climate & Weather Averages in Cascais
High Temp: 82 °F
Low Temp: 64 °F
Mean Temp: 73 °F
Precipitation: 0.09"
Humidity: 65%
Dew Point: 58 °F
Wind: 21 mph
Pressure: 30.04 "Hg
Visibility: 6 mi
August Climate & Weather Averages in Cascais
High Temp: 83 °F
Low Temp: 65 °F
Mean Temp: 74 °F
Precipitation: 0.34"
Humidity: 65%
Dew Point: 59 °F
Wind: 20 mph
Pressure: 30.02 "Hg
Visibility: 6 mi
September Climate & Weather Averages in Cascais
High Temp: 80 °F
Low Temp: 63 °F
Mean Temp: 71 °F
Precipitation: 1.04"
Humidity: 69%
Dew Point: 58 °F
Wind: 16 mph
Pressure: 30.03 "Hg
Visibility: 6 mi
October Climate & Weather Averages in Cascais
High Temp: 73 °F
Low Temp: 59 °F
Mean Temp: 66 °F
Precipitation: 2.74"
Humidity: 76%
Dew Point: 57 °F
Wind: 15 mph
Pressure: 30.03 "Hg
Visibility: 6 mi
November Climate & Weather Averages in Cascais
High Temp: 64 °F
Low Temp: 53 °F
Mean Temp: 58 °F
Precipitation: 3.05"
Humidity: 82%
Dew Point: 52 °F
Wind: 14 mph
Pressure: 30.09 "Hg
Visibility: 6 mi
December Climate & Weather Averages in Cascais
High Temp: 59 °F
Low Temp: 49 °F
Mean Temp: 54 °F
Precipitation: 3.37"
Humidity: 85%
Dew Point: 49 °F
Wind: 14 mph
Pressure: 30.18 "Hg
Visibility: 6 mi