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
The shift into September uncovers an average high-temperature of an agreeable 22.5°C (72.5°F), subtly different from the previous month. Alcoitão reports an average low-temperature of 18.5°C (65.3°F) during the subtly cooler September nights.Humidity
The average relative humidity in September in Alcoitão is 75%.Rainfall
In Alcoitão, in September, it is raining for 4.8 days, with typically 15mm (0.59") of accumulated precipitation. Throughout the year, there are 106.9 rainfall days, and 365mm (14.37") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Alcoitão, sunrise is at 07:07 and sunset at 20:07. On the last day of the month, sunrise is at 07:33 and sunset at 19:21 WEST.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the temperature in September in Alcoitão?
What is the average humidity in September in Alcoitão?
How much does it rain in Alcoitão in September?
What is the average length of the day in September in Alcoitão?
When are sunrise and sunset in September in Alcoitão?
How long on average sun shines in September in Alcoitão?
What is the UV index reading in September in Alcoitão?
Average temperature in September
Alcoitão, Portugal
- Average high temperature in September: 22.5°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 18.5°C
The month with the highest average low temperature is August (18.8°C).
The coldest month (with the lowest average low temperature) is February (11.7°C).
Average pressure in September
Alcoitão, Portugal
- Average pressure in September: 1017.1mbar
The months with the highest atmospheric pressure are January and December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in September
Alcoitão, Portugal
- Average wind speed in September: 17.1km/h
The windiest month (with the highest average wind speed) is February (21.1km/h).
The calmest month (with the lowest average wind speed) is October (16.9km/h).
Average humidity in September
Alcoitão, Portugal
- Average humidity in September: 75%
The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are February, May, October and November (74%).
Average rainfall in September
Alcoitão, Portugal
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is November (68mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Alcoitão, Portugal
- Average rainfall days in September: 4.8 days
The month with the highest number of rainy days is November (14.5 days).
The month with the least rainy days is August (1.7 days).
Average daylight in September /
Average sunshine in September
Alcoitão, 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 3min
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
Alcoitão, Portugal
- Average sunshine days in September: 23.6 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is November (13.4 days).
Average UV index in September
Alcoitão, Portugal
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in September
Alcoitão, 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
Alcoitão, 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).
Alcoitão, Portugal
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