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
The warmest temperatures occur during September, when averages reach a peak of 27.5°C (81.5°F) and a low of 21.5°C (70.7°F).Heat index
September's mean heat index is evaluated at a tropical 32°C (89.6°F). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. 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
The average relative humidity in September is 85%.Rainfall
In Vallenilla, in September, it is raining for 27.9 days, with typically 155mm (6.1") of accumulated precipitation. Throughout the year, there are 292.3 rainfall days, and 1427mm (56.18") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 06:18 and sunset at 18:37. On the last day of September, sunrise is at 06:16 and sunset at 18:18 -04.
Sunshine
The month with the most sunshine is September, with an average of 9.1h of sunshine.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 6 in September transforms into this advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the warmest months?
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
What month has the most sunshine?
How long on average sun shines in September?
What is the month with the highest UV index?
When is the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Vallenilla, Venezuela
- Average high temperature in September: 27.5°C
The warmest month (with the highest average high temperature) is September (27.5°C).
The month with the lowest average high temperature is January (25.3°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is October (22.2°C).
The coldest month (with the lowest average low temperature) is February (20.4°C).
Average pressure in September
Vallenilla, Venezuela
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is July (1013.4mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Vallenilla, Venezuela
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is February (14.2km/h).
The calmest month (with the lowest average wind speed) is September (8km/h).
Average humidity in September
Vallenilla, Venezuela
- Average humidity in September: 85%
The months with the highest relative humidity are July and November (87%).
The month with the lowest relative humidity is February (83%).
Average rainfall in September
Vallenilla, Venezuela
- Average rainfall in September: 155mm
The wettest month (with the highest rainfall) is October (212mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in September
Vallenilla, Venezuela
- Average rainfall days in September: 27.9 days
The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is February (14.9 days).
Average daylight in September /
Average sunshine in September
Vallenilla, Venezuela
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 48min).
Average sunshine days in September
Vallenilla, Venezuela
- Average sunshine days in September: 1.4 days
The month with the most sunshine days is February (9.5 days).
The month with the least sunshine days is September (1.4 days).
Average UV index in September
Vallenilla, Venezuela
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Vallenilla, Venezuela
- Average cloud cover in September: 35
The month with the most cloud cover is November (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 35).
Average visibility in September
Vallenilla, Venezuela
- Average visibility in September: 9km
The months with the highest visibility are January and February (10km).
The months with the lowest visibility are March, April, May, June, July, August, September, October, November and December (9km).
