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
September
Weather in September
Temperature
The arrival of September denotes a barely perceptible change in the average high-temperatures to a still warm 25.8°C (78.4°F) from August's 27.8°C (82°F). Alferce anticipates an average minimum temperature of 17.9°C (64.2°F) in the month of September.Humidity
In September, the average relative humidity in Alferce is 68%.Rainfall
In Alferce, during September, the rain falls for 3.9 days and regularly aggregates up to 6mm (0.24") of precipitation. In Alferce, during the entire year, the rain falls for 85.4 days and collects up to 164mm (6.46") of precipitation.Daylight
In September, the average length of the day in Alferce is 12h and 25min.On the first day of the month, sunrise is at 07:04 and sunset at 20:02. On the last day of September, sunrise is at 07:28 and sunset at 19:18 WEST.
Sunshine
In September, the average sunshine in Alferce is 9.5h.UV index
The months with the highest UV index are May through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Alferce?
What is the average humidity in September in Alferce?
How much does it rain in Alferce in September?
How many hours of daylight does Alferce have in September?
What time are sunrise and sunset in September in Alferce?
How many hours of sunshine does Alferce have in September?
What are the months with the highest UV index in Alferce?
How high is the UV index in September in Alferce?
Average temperature in September
Alferce, Portugal
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is January (14.5°C).
- Average low temperature in September: 17.9°C
The month with the highest average low temperature is August (18.4°C).
The coldest month (with the lowest average low temperature) is February (9.2°C).
Average pressure in September
Alferce, Portugal
- Average pressure in September: 1016.7mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Alferce, Portugal
- Average wind speed in September: 11.2km/h
The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is September (11.2km/h).
Average humidity in September
Alferce, Portugal
- Average humidity in September: 68%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is August (65%).
Average rainfall in September
Alferce, Portugal
- Average rainfall in September: 6mm
The wettest month (with the highest rainfall) is November (25mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in September
Alferce, Portugal
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (12.2 days).
The month with the least rainy days is August (1.5 days).
Average daylight in September /
Average sunshine in September
Alferce, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Alferce, Portugal
- Average sunshine days in September: 24.4 days
The month with the most sunshine days is July (28.6 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in September
Alferce, Portugal
- Average UV index in September: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Alferce, Portugal
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Alferce, 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).
