September weather forecastSousel, Portugal
September
Weather in September
September, the first month of the autumn in Sousel, is also a moderately hot month, with an average temperature varying between 29.9°C (85.8°F) and 16.1°C (61°F).Temperature
The onset of September is marked by a minor decrease in temperature, transitioning from a hot 33.7°C (92.7°F) in August to a warm 29.9°C (85.8°F). In September, Sousel experiences a significant drop from daily zeniths to an average nighttime temperature of 16.1°C (61°F).Heat index
The heat index for September is appraised at a hot 31°C (87.8°F). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
In Sousel, the average relative humidity in September is 53%.Rainfall
In Sousel, Portugal, in September, it is raining for 5.3 days, with typically 16mm (0.63") of accumulated precipitation. Throughout the year, in Sousel, there are 95.8 rainfall days, and 310mm (12.2") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Sousel, Portugal, sunrise is at 07:00 and sunset at 20:01. On the last day of the month, sunrise is at 07:26 and sunset at 19:14 WEST.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index in Sousel, Portugal, is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, an average UV index of 6 transforms into the following instructions:
Shun overexposure. Protection from sun ravages is indispensable. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sousel, Portugal
- Average high temperature in September: 29.9°C
The warmest month (with the highest average high temperature) is August (33.7°C).
The month with the lowest average high temperature is January (13.7°C).
- Average low temperature in September: 16.1°C
The month with the highest average low temperature is August (16.9°C).
The coldest month (with the lowest average low temperature) is February (5.2°C).
Average pressure in September
Sousel, Portugal
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Sousel, Portugal
- Average wind speed in September: 9.7km/h
The windiest months (with the highest average wind speed) are February and March (12km/h).
The calmest month (with the lowest average wind speed) is September (9.7km/h).
Average humidity in September
Sousel, Portugal
- Average humidity in September: 53%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Sousel, Portugal
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is April (52mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in September
Sousel, Portugal
- Average rainfall days in September: 5.3 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is August (2 days).
Average daylight in September /
Average sunshine in September
Sousel, Portugal
- Average daylight in September: 12h and 24min
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 30min).
- Average sunshine in September: 9h and 6min
The months with the most sunshine are July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Sousel, Portugal
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is July (28.8 days).
The month with the least sunshine days is April (15.3 days).
Average UV index in September
Sousel, Portugal
- Average UV index in September: 6
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Sousel, Portugal
- Average cloud cover in September: 20
The month with the most cloud cover is January (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Sousel, Portugal
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and April (8km).
