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 onset of September brings an average high-temperature of a still moderately hot 27.3°C (81.1°F), nearly matching the August temperature. San José de Los Altos's nights in September experience an average temperature drop to a comfortable 18.9°C (66°F).Heat index
The heat index value for September is evaluated at a tropical 31°C (87.8°F). One might feel worn out with persistent exposure and activity, resulting in heat cramps.The heat index's values are generally associated with conditions in shade and light breezes. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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
In September, the average relative humidity is 86%.Rainfall
In San José de Los Altos, in September, it is raining for 29 days, with typically 189mm (7.44") of accumulated precipitation. Throughout the year, in San José de Los Altos, there are 309.5 rainfall days, and 1663mm (65.47") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 11min.On the first day of the month, sunrise is at 06:18 and sunset at 18:36. On the last day of September, sunrise is at 06:16 and sunset at 18:18 -04.
Sunshine
In September, the average sunshine is 7.9h.UV index
The months with the highest UV index are January through October and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 6 during September translates into the following guidance:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in San José de Los Altos in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the month with the highest UV index?
How high is the UV index in September?
Average temperature in September
San José de Los Altos, Venezuela
- Average high temperature in September: 27.3°C
The warmest months (with the highest average high temperature) are March and April (27.5°C).
The month with the lowest average high temperature is December (25.5°C).
- Average low temperature in September: 18.9°C
The month with the highest average low temperature is May (19.8°C).
The coldest month (with the lowest average low temperature) is February (18.4°C).
Average pressure in September
San José de Los Altos, Venezuela
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is July (1013.4mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
San José de Los Altos, Venezuela
- Average wind speed in September: 4.4km/h
The windiest month (with the highest average wind speed) is February (8.1km/h).
The calmest month (with the lowest average wind speed) is September (4.4km/h).
Average humidity in September
San José de Los Altos, Venezuela
- Average humidity in September: 86%
The month with the highest relative humidity is November (88%).
The month with the lowest relative humidity is March (78%).
Average rainfall in September
San José de Los Altos, Venezuela
- Average rainfall in September: 189mm
The wettest month (with the highest rainfall) is October (229mm).
The driest month (with the least rainfall) is February (27mm).
Average rainfall days in September
San José de Los Altos, Venezuela
- Average rainfall days in September: 29 days
The month with the highest number of rainy days is August (30.1 days).
The month with the least rainy days is February (16.4 days).
Average daylight in September /
Average sunshine in September
San José de Los Altos, 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: 7h and 5min
The month with the most sunshine is February (Average sunshine: 9h and 0min).
The months with the least sunshine are July and November (Average sunshine: 7h and 12min).
Average sunshine days in September
San José de Los Altos, Venezuela
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is February (7.3 days).
The month with the least sunshine days is September (0.5 days).
Average UV index in September
San José de Los Altos, 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 and December (UV index 6).
The month with the lowest UV index is November (UV index 5).
Average cloud cover in September
San José de Los Altos, Venezuela
- Average cloud cover in September: 46
The month with the most cloud cover is November (Cloud cover 57).
The months with the least cloud cover are February and March (Cloud cover 40).
Average visibility in September
San José de Los Altos, Venezuela
- Average visibility in September: 7km
The months with the highest visibility are February, March and April (9km).
The months with the lowest visibility are June, July, August, September, October, November and December (7km).
