Cascais in september: average Weather, Temperature and Climate
Weather in Cascais in september 2025
The weather in Cascais in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
perfect weather UV index: 6
Weather at 6am
68°F
Clear/Sunny
63% of time
24%
8%
6%
Weather at 12pm
74°F
Clear/Sunny
72% of time
15%
7%
5%
Weather at 6pm
72°F
Clear/Sunny
75% of time
19%
4%
3%
Weather at 3am
68°F
61%
24%
8%
4%
Evolution of daily average temperature and precipitation in Cascais in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Cascais in september.
The climate of Cascais in september is perfect
the weather in Cascais in september is relatively dry (with 1.2in of precipitation over 2 days). The weather's not getting better compared to the previous month since in august there is an average of 0.2in of rainfall over 0 days.
The climate quite pleasant in this city the month of september. The thermometer averaged maximum of 74°F. The minimum is 68°F. Thus, the mean temperature average in september in Cascais is 72°F. Note that these seasonal averages are in contrast with those observed in Cascais in september with a maximum record of 85°F in 2012 and a minimum record of 61°F in 2011. You can hope to have about 0 days with temperatures above 86°F, or 0 of time.
In september in Cascais, the days on average last 12:27. The sun rises at 06:19 and sunset is at 18:46.
With ideal weather conditions, the month of september is recommended to go in Cascais.
Seasonal average climate and temperature of Cascais in september
Check below seasonal norms These datas are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 72°F | ||||
| Highest temperature | 74°F | ||||
| Lowest temperature | 68°F | ||||
| Highest record temperature | 85°F (2012) | ||||
| Lowest record temperature | 61°F (2011) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 68°F | ||||
| Lowest sea temperature | 66°F | ||||
| Highest sea temperature | 71°F | ||||
| Wind | |||||
| Wind speed | 23km/h | ||||
| Wind temperature | 68°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.2in | ||||
| Number of days with rainfall | 2 day(s) (6%) | ||||
| Record daily rainfall | 1.3in (2013) | ||||
| Other climate data | |||||
| Humidity | 82% | ||||
| Visibility | 9.86km | ||||
| Cloud cover | 18% | ||||
| UV index | 6 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:19 | ||||
| Time of sunset | 18:46 | ||||
| Length of day | 12:27 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last september?
Here is the day by day recorded weather in Cascais in september 2024:
65°F to 70°F
67°F to 68°F
63°F to 68°F
63°F to 72°F
63°F to 68°F
61°F to 67°F
63°F to 70°F
63°F to 68°F
63°F to 70°F
63°F to 67°F
63°F to 70°F
63°F to 70°F
65°F to 72°F
68°F to 72°F
67°F to 76°F
68°F to 79°F
68°F to 77°F
65°F to 70°F
65°F to 70°F
65°F to 68°F
67°F to 72°F
65°F to 70°F
63°F to 68°F
63°F to 70°F
68°F to 70°F
68°F to 70°F
63°F to 68°F
59°F to 70°F
63°F to 72°F
65°F to 72°F
Map: other cities in Portugal in september
Cities near Cascais:
| Estoril in september | perfect weather |
| Guincho in september | perfect weather |
| Sintra in september | perfect weather |
| Colares in september | perfect weather |
| Costa da Caparica in september | perfect weather |
| Lisbon in september | perfect weather |
| Ericeira in september | perfect weather |
| Montijo in september | perfect weather |
| Sesimbra in september | perfect weather |
| Torres Vedras in september | perfect weather |
| Setúbal in september | perfect weather |
| Lourinhã in september | perfect weather |
Click over cities on the map for information about the weather in september.
Cascais
perfect weather
good
tolerable
bad
very bad
Weather data for Cascais in september:
Weather data for Cascais for september are derived from an average of the weather forecast since 2009 in Cascais. There is a margin of error and these forecasts are to be considered as general information only. The weather in Cascais can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Cascais.