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 snowfall in September
- Average snowfall 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 shift into September reveals an average high-temperature of a still moderately hot 25.3°C (77.5°F), closely mirroring August's climate. Arrifana anticipates a considerable cooling off from the daytime high to an average minimum temperature of 12.3°C (54.1°F) in September.Humidity
The average relative humidity in September is 65%.Rainfall
In Arrifana, during September, the rain falls for 7.8 days and regularly aggregates up to 31mm (1.22") of precipitation. In Arrifana, during the entire year, the rain falls for 149.8 days and collects up to 846mm (33.31") of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in September in Arrifana is 12h and 28min.On the first day of September, sunrise is at 07:01 and sunset at 20:06. On the last day of the month, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
In Arrifana, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Arrifana?
What is the average humidity in September in Arrifana?
How much does it rain in Arrifana in September?
When it does not snow in Arrifana?
What is the average length of the day in September in Arrifana?
What time are sunrise and sunset in September in Arrifana?
How many hours of sunshine does Arrifana have in September?
What is the UV index intensity in September in Arrifana?
Average temperature in September
Arrifana, Portugal
- Average high temperature in September: 25.3°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (10.4°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is February (3.7°C).
Average pressure in September
Arrifana, Portugal
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Arrifana, Portugal
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is March (8.2km/h).
The calmest month (with the lowest average wind speed) is September (6.3km/h).
Average humidity in September
Arrifana, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (62%).
Average rainfall in September
Arrifana, Portugal
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is December (129mm).
The driest month (with the least rainfall) is July (10mm).
Average rainfall days in September
Arrifana, Portugal
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is April (17.1 days).
The month with the least rainy days is August (4.9 days).
Average snowfall in September
Arrifana, Portugal
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Arrifana, Portugal
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Arrifana, Portugal
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Arrifana, Portugal
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is August (24.6 days).
The months with the least sunshine days are April and November (10.8 days).
Average UV index in September
Arrifana, Portugal
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in September
Arrifana, Portugal
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Arrifana, Portugal
- Average visibility in September: 9km
The months with the highest visibility are August and September (9km).
The months with the lowest visibility are January and November (7km).
