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
September registers an average high-temperature of a still moderately hot 25.5°C (77.9°F), slightly varied from August's 27.2°C (81°F). Arentim records a steady low-temperature average of 14.4°C (57.9°F) during September.Humidity
August and September, with an average relative humidity of 65%, are the least humid months.Rainfall
In Arentim, in September, during 5.2 rainfall days, 26mm (1.02") of precipitation is typically accumulated. In Arentim, Portugal, during the entire year, the rain falls for 127.3 days and collects up to 823mm (32.4") of precipitation.Daylight
In Arentim, Portugal, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 07:00 and sunset at 20:06. On the last day of September, sunrise is at 07:30 and sunset at 19:17 WEST.
Sunshine
In September, the average sunshine in Arentim is 9.1h.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 radiation for average individuals.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Take precautions - Protection against sun damage is advised. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Arentim?
What are the least humid months in Arentim?
What is the average humidity in September in Arentim?
How much does it rain in Arentim in September?
What is the average length of the day in September in Arentim?
What time are sunrise and sunset in September in Arentim?
How long on average sun shines in September in Arentim?
What is the UV index reading in September in Arentim?
Average temperature in September
Arentim, Portugal
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (12.6°C).
- Average low temperature in September: 14.4°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in September
Arentim, Portugal
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Arentim, Portugal
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is March (9.3km/h).
The calmest month (with the lowest average wind speed) is September (7.4km/h).
Average humidity in September
Arentim, Portugal
- Average humidity in September: 65%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in September
Arentim, Portugal
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (125mm).
The driest month (with the least rainfall) is July (8mm).
Average rainfall days in September
Arentim, Portugal
- Average rainfall days in September: 5.2 days
The month with the highest number of rainy days is November (15.6 days).
The month with the least rainy days is August (3.5 days).
Average daylight in September /
Average sunshine in September
Arentim, 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 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Arentim, Portugal
- Average sunshine days in September: 24 days
The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is November (13.2 days).
Average UV index in September
Arentim, 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 3).
Average cloud cover in September
Arentim, Portugal
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Arentim, Portugal
- Average visibility in September: 9km
The months with the highest visibility are February, March, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and April (8km).
