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
Chamusca, Portugal, records an average high-temperature of a warm 28.8°C (83.8°F) in September, maintaining a close correlation with August's 31.3°C (88.3°F). During September nights, Chamusca documents a marked contrast from daily highs, with an average temperature of 14.7°C (58.5°F).Heat index
In September, the heat index is computed to be a hot 31°C (87.8°F). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
In September, the average relative humidity is 62%.Rainfall
In Chamusca, in September, during 6.1 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Chamusca, during the entire year, the rain falls for 113.2 days and collects up to 426mm (16.77") of precipitation.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 07:02 and sunset at 20:04. On the last day of September, sunrise is at 07:29 and sunset at 19:17 WEST.
Sunshine
The average sunshine in September in Chamusca is 9.1h.UV index
June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 6 in September converts into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Chamusca have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Chamusca, Portugal
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (13.7°C).
- Average low temperature in September: 14.7°C
The month with the highest average low temperature is July (15.3°C).
The coldest months (with the lowest average low temperature) are January and February (6.2°C).
Average pressure in September
Chamusca, Portugal
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is December (1022.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Chamusca, Portugal
- Average wind speed in September: 10.6km/h
The windiest month (with the highest average wind speed) is July (13.3km/h).
The calmest month (with the lowest average wind speed) is October (10.5km/h).
Average humidity in September
Chamusca, Portugal
- Average humidity in September: 62%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Chamusca, Portugal
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is November (66mm).
The driest months (with the least rainfall) are July and August (4mm).
Average rainfall days in September
Chamusca, Portugal
- Average rainfall days in September: 6.1 days
The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is August (3 days).
Average daylight in September /
Average sunshine in September
Chamusca, 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 30min).
- 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
Chamusca, Portugal
- Average sunshine days in September: 22.8 days
The month with the most sunshine days is July (27.6 days).
The month with the least sunshine days is April (14 days).
Average UV index in September
Chamusca, Portugal
- Average UV index in September: 6
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Chamusca, Portugal
- Average cloud cover in September: 22
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Chamusca, 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).
