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
Weather in September
Temperature
September ushers in a minor alteration in Vila Viçosa's climate, with the average high-temperature moving from August's tropical 33.7°C (92.7°F) to a moderately hot 29.9°C (85.8°F). Vila Viçosa experiences a significant contrast between daily highs and an average nighttime temperature of 16.1°C (61°F) during September.Heat index
For most parts of September, the heat index is appraised at a hot 31°C (87.8°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.The standards for the heat index are set for locations in shade and under light breezes. 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 'felt air temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
The average relative humidity in September is 53%.Rainfall
In Vila Viçosa, in September, it is raining for 5.1 days, with typically 14mm (0.55") of accumulated precipitation. Throughout the year, there are 95.6 rainfall days, and 308mm (12.13") of precipitation is accumulated.Daylight
The average length of the day in September in Vila Viçosa is 12h and 26min.On the first day of September, sunrise is at 06:59 and sunset at 19:59. On the last day of the month, sunrise is at 07:25 and sunset at 19:13 WEST.
Sunshine
In September, the average sunshine in Vila Viçosa is 9.2h.UV index
In Vila Viçosa, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
How hot is it in Vila Viçosa in September?
What is the average humidity in September in Vila Viçosa?
How many days does it rain in September in Vila Viçosa?
How many hours of daylight does Vila Viçosa have in September?
What time are sunrise and sunset in September in Vila Viçosa?
How many hours of sunshine does Vila Viçosa have in September?
What is the UV index intensity in September in Vila Viçosa?
Average temperature in September
Vila Viçosa, 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
Vila Viçosa, 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
Vila Viçosa, Portugal
- Average wind speed in September: 9.5km/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 (9.5km/h).
Average humidity in September
Vila Viçosa, 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
Vila Viçosa, Portugal
- Average rainfall in September: 14mm
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
Vila Viçosa, Portugal
- Average rainfall days in September: 5.1 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
Vila Viçosa, Portugal
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
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
Vila Viçosa, Portugal
- Average sunshine days in September: 23.5 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
Vila Viçosa, 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
Vila Viçosa, Portugal
- Average cloud cover in September: 19
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
Vila Viçosa, 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).
Vila Viçosa, Portugal
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