September weather forecastSerpente, Portugal
September
Weather in September
September, the first month of the autumn in Serpente, is still a warm month, with temperature in the range of an average low of 15.7°C (60.3°F) and an average high of 24°C (75.2°F).Temperature
The shift into September reveals an average high-temperature of a still warm 24°C (75.2°F), closely mirroring August's climate. Nightly temperatures in Serpente drop to an average low of 15.7°C (60.3°F) in September.Humidity
September is the least humid month, with an average relative humidity of 68%.Rainfall
In Serpente, in September, during 7.2 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, there are 137 rainfall days, and 815mm (32.09") of precipitation is accumulated.Daylight
In September, the average length of the day 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
The average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Exercise prevention - Warding off sunburn is urged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Serpente, Portugal
- Average high temperature in September: 24°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (12.8°C).
- Average low temperature in September: 15.7°C
The months with the highest average low temperature are July and August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.6°C).
Average pressure in September
Serpente, Portugal
- Average pressure in September: 1017.3mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Serpente, Portugal
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is February (12.8km/h).
The calmest month (with the lowest average wind speed) is September (9.6km/h).
Average humidity in September
Serpente, Portugal
- Average humidity in September: 68%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (68%).
Average rainfall in September
Serpente, Portugal
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is November (126mm).
The driest month (with the least rainfall) is July (9mm).
Average rainfall days in September
Serpente, Portugal
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is November (16.1 days).
The month with the least rainy days is August (4.7 days).
Average daylight in September /
Average sunshine in September
Serpente, Portugal
- Average daylight in September: 12h and 30min
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 6min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Serpente, Portugal
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is August (24.8 days).
The month with the least sunshine days is November (11.9 days).
Average UV index in September
Serpente, 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, November and December (UV index 3).
Average cloud cover in September
Serpente, Portugal
- Average cloud cover in September: 21
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 18).
Average visibility in September
Serpente, Portugal
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
