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 records an average high-temperature of a still moderately hot 24.8°C (76.6°F), indicating a minor variation from the preceding month. An average low-temperature of 14°C (57.2°F) is expected during September.Humidity
The months with the lowest humidity in Barreiros are August and September, with an average relative humidity of 69%.Rainfall
In September, in Barreiros, the rain falls for 8.1 days. Throughout September, 35mm (1.38") of precipitation is accumulated. In Barreiros, during the entire year, the rain falls for 145.4 days and collects up to 998mm (39.29") of precipitation.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 07:00 and sunset at 20:06. On the last day of the month, sunrise is at 07:29 and sunset at 19:16 WEST.
Sunshine
The average sunshine in September in Barreiros is 8.9h.UV index
In Barreiros, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Barreiros?
What is the least humid month in Barreiros?
What is the average humidity in September in Barreiros?
How many days does it rain in September in Barreiros?
What is the average length of the day in September in Barreiros?
What time are sunrise and sunset in September in Barreiros?
How long on average sun shines in September in Barreiros?
How high is the UV index in September in Barreiros?
Average temperature in September
Barreiros, Portugal
- Average high temperature in September: 24.8°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (11.8°C).
- Average low temperature in September: 14°C
The months with the highest average low temperature are July and August (14.4°C).
The coldest month (with the lowest average low temperature) is February (5.8°C).
Average pressure in September
Barreiros, Portugal
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is December (1022.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Barreiros, Portugal
- Average wind speed in September: 7.8km/h
The windiest month (with the highest average wind speed) is February (10.3km/h).
The calmest month (with the lowest average wind speed) is September (7.8km/h).
Average humidity in September
Barreiros, Portugal
- Average humidity in September: 69%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are August and September (69%).
Average rainfall in September
Barreiros, Portugal
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is November (154mm).
The driest month (with the least rainfall) is July (11mm).
Average rainfall days in September
Barreiros, Portugal
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is November (17.2 days).
The month with the least rainy days is August (5.4 days).
Average daylight in September /
Average sunshine in September
Barreiros, 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: 8h and 5min
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 42min).
Average sunshine days in September
Barreiros, Portugal
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is November (11.7 days).
Average UV index in September
Barreiros, 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, April, November and December (UV index 3).
Average cloud cover in September
Barreiros, Portugal
- Average cloud cover in September: 24
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 21).
Average visibility in September
Barreiros, Portugal
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
The month with the lowest visibility is January (8km).
