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 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
September's average high-temperature in Loures is a still moderately hot 25.7°C (78.3°F), maintaining a close comparison with August's 27.4°C (81.3°F). In September, Loures records an average nighttime temperature of 17.1°C (62.8°F).Humidity
In September, the average relative humidity in Loures, Portugal, is 69%.Rainfall
In Loures, in September, during 5.6 rainfall days, 18mm (0.71") of precipitation is typically accumulated. In Loures, during the entire year, the rain falls for 111.8 days and collects up to 359mm (14.13") of precipitation.Daylight
In Loures, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 07:06 and sunset at 20:06. On the last day of the month, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
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 in Loures. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 suggests this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Loures in September?
What is the average humidity in September in Loures?
How much does it rain in Loures in September?
How many hours of daylight does Loures have in September?
What time are sunrise and sunset in September in Loures?
How many hours of sunshine does Loures have in September?
What is the month with the highest UV index in Loures?
How high is the UV index in September in Loures?
Average temperature in September
Loures, Portugal
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is August (27.4°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in September: 17.1°C
The month with the highest average low temperature is August (17.6°C).
The coldest month (with the lowest average low temperature) is February (9.4°C).
Average pressure in September
Loures, Portugal
- Average pressure in September: 1016.9mbar
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
Loures, Portugal
- Average wind speed in September: 12.9km/h
The windiest months (with the highest average wind speed) are February and July (15.9km/h).
The calmest months (with the lowest average wind speed) are September and October (12.9km/h).
Average humidity in September
Loures, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Loures, Portugal
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (61mm).
The driest month (with the least rainfall) is July (3mm).
Average rainfall days in September
Loures, Portugal
- Average rainfall days in September: 5.6 days
The month with the highest number of rainy days is November (14.1 days).
The month with the least rainy days is August (2.3 days).
Average daylight in September /
Average sunshine in September
Loures, 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 18min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Loures, Portugal
- Average sunshine days in September: 23 days
The month with the most sunshine days is August (26.4 days).
The months with the least sunshine days are April and November (14.5 days).
Average UV index in September
Loures, 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
Loures, 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
Loures, 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).
Loures, Portugal
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