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
In September, the average high-temperature registers at a still warm 24.7°C (76.5°F), nearly identical to August's 25.6°C (78.1°F). During the nights in September, Foz do Arelho experiences a consistent average temperature of 16.5°C (61.7°F).Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 72%.Rainfall
In Foz do Arelho, in September, it is raining for 4.9 days, with typically 8mm (0.31") of accumulated precipitation. In Foz do Arelho, during the entire year, the rain falls for 101.9 days and collects up to 170mm (6.69") of precipitation.Daylight
In Foz do Arelho, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 07:05 and sunset at 20:07. On the last day of September, sunrise is at 07:32 and sunset at 19:20 WEST.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Foz do Arelho is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What are the least humid months?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in Foz do Arelho?
Average temperature in September
Foz do Arelho, Portugal
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is August (25.6°C).
The month with the lowest average high temperature is January (14°C).
- Average low temperature in September: 16.5°C
The month with the highest average low temperature is August (17°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in September
Foz do Arelho, Portugal
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in September
Foz do Arelho, Portugal
- Average wind speed in September: 13.6km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).
Average humidity in September
Foz do Arelho, Portugal
- Average humidity in September: 72%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are September and October (72%).
Average rainfall in September
Foz do Arelho, Portugal
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
Foz do Arelho, Portugal
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is November (13.7 days).
The month with the least rainy days is August (3 days).
Average daylight in September /
Average sunshine in September
Foz do Arelho, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Foz do Arelho, Portugal
- Average sunshine days in September: 23.3 days
The month with the most sunshine days is August (25 days).
The month with the least sunshine days is November (13.3 days).
Average UV index in September
Foz do Arelho, Portugal
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Foz do Arelho, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are August and September (Cloud cover 21).
Average visibility in September
Foz do Arelho, Portugal
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).
