Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The arrival of September in Amadora sees an average high-temperature of a still warm 24.7°C (76.5°F), hardly diverging from August's 25.8°C (78.4°F). The temperature dips to an average of 17.9°C (64.2°F) during September nights.Humidity
In September, the average relative humidity in Amadora is 71%.Rainfall
In Amadora, in September, it is raining for 5.7 days, with typically 19mm (0.75") of accumulated precipitation. In Amadora, Portugal, during the entire year, the rain falls for 112.7 days and collects up to 389mm (15.31") of precipitation.Sea temperature
September is the month with the warmest seawater, with an average sea temperature of 19.9°C (67.8°F).Note: For most people, a water temperature of 19.9°C (67.8°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 07:06 and sunset at 20:07. On the last day of the month, sunrise is at 07:32 and sunset at 19:21 WEST.
Sunshine
In Amadora, the average sunshine in September is 9.4h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 6 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are the temperatures in Amadora in September?
What is the average humidity in September in Amadora?
How many days does it rain in September in Amadora?
What is the month with the warmest sea water in Amadora?
What is the sea temperature in September in Amadora?
How many hours of daylight does Amadora have in September?
What time are sunrise and sunset in September in Amadora?
How many hours of sunshine does Amadora have in September?
When is the highest UV index in Amadora?
How high is the UV index in September in Amadora?
Average temperature in September
Amadora, Portugal
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (25.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 17.9°C
The months with the highest average low temperature are July and August (18.1°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in September
Amadora, Portugal
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Amadora, Portugal
- Average wind speed in September: 14.4km/h
The windiest month (with the highest average wind speed) is February (17.8km/h).
The calmest month (with the lowest average wind speed) is October (14.1km/h).
Average humidity in September
Amadora, Portugal
- Average humidity in September: 71%
The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are May and August (70%).
Average rainfall in September
Amadora, Portugal
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is November (69mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Amadora, Portugal
- Average rainfall days in September: 5.7 days
The month with the highest number of rainy days is November (14.4 days).
The month with the least rainy days is August (2.6 days).
Average sea temperature in September
Amadora, Portugal
- Average sea temperature in September: 19.9°C
The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in September /
Average sunshine in September
Amadora, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Amadora, Portugal
- Average sunshine days in September: 22.6 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in September
Amadora, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Amadora, Portugal
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Amadora, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Amadora, Portugal
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