September weather forecastElvas, Portugal
September
Weather in September
September, the first month of the autumn in Elvas, is still a hot month, with an average temperature fluctuating between 16.9°C (62.4°F) and 30.3°C (86.5°F).Temperature
With the onset of September, the average high-temperature subtly recedes from August's 34.8°C (94.6°F) to a still tropical 30.3°C (86.5°F). Throughout September, Elvas registers a distinct decrease from daytime highs, reaching an average low of 16.9°C (62.4°F).Heat index
The heat index for September is calculated to be a tropical 31°C (87.8°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity is 45%.Rainfall
In Elvas, during September, the rain falls for 5 days and regularly aggregates up to 9mm (0.35") of precipitation. In Elvas, Portugal, during the entire year, the rain falls for 91.5 days and collects up to 245mm (9.65") 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 06:58 and sunset at 19:58. On the last day of September, in Elvas, sunrise is at 07:24 and sunset at 19:12 WEST.
Sunshine
In September, the average sunshine in Elvas, Portugal, is 9.5h.UV index
The average daily maximum UV index in September in Elvas is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 6 during September, leads to the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Elvas, Portugal
- Average high temperature in September: 30.3°C
The warmest month (with the highest average high temperature) is August (34.8°C).
The month with the lowest average high temperature is January (13°C).
- Average low temperature in September: 16.9°C
The month with the highest average low temperature is August (18.5°C).
The coldest month (with the lowest average low temperature) is January (4.4°C).
Average pressure in September
Elvas, Portugal
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is December (1023.1mbar).
The months with the lowest atmospheric pressure are July and August (1015.1mbar).
Average wind speed in September
Elvas, Portugal
- Average wind speed in September: 8.9km/h
The windiest months (with the highest average wind speed) are February and March (12.1km/h).
The calmest month (with the lowest average wind speed) is September (8.9km/h).
Average humidity in September
Elvas, Portugal
- Average humidity in September: 45%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Elvas, Portugal
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is November (38mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in September
Elvas, Portugal
- Average rainfall days in September: 5 days
The month with the highest number of rainy days is April (13.1 days).
The month with the least rainy days is August (1.6 days).
Average daylight in September /
Average sunshine in September
Elvas, Portugal
- Average daylight in September: 12h and 24min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 18min).
Average sunshine days in September
Elvas, Portugal
- Average sunshine days in September: 23.5 days
The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is April (15.7 days).
Average UV index in September
Elvas, Portugal
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Elvas, Portugal
- Average cloud cover in September: 15
The month with the most cloud cover is January (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in September
Elvas, Portugal
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
