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
September's climate shows a minor adjustment in average high-temperatures to a still tropical 31.7°C (89.1°F) from August's 33°C (91.4°F). During the month of September, the temperature generally drops to a low average of 22.1°C (71.8°F).Heat index
In September, the heat index is calculated to be a scorching 44°C (111.2°F). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.Note that heat index values are valued for light wind and location in the shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In Chirilagua, the average relative humidity in September is 81%.Rainfall
In September, the rain falls for 25.8 days. Throughout September, 122mm (4.8") of precipitation is accumulated. In Chirilagua, during the entire year, the rain falls for 188.2 days and collects up to 954mm (37.56") of precipitation.Daylight
The average length of the day in September is 12h and 12min.On the first day of the month, sunrise is at 05:41 and sunset at 18:03. On the last day of September, sunrise is at 05:41 and sunset at 17:42 CST.
Sunshine
In September, the average sunshine in Chirilagua is 8.8h.UV index
The months with the lowest UV index are September and October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: In September, a daily UV index of 6 turns into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Chirilagua have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
When is the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Chirilagua, El Salvador
- Average high temperature in September: 31.7°C
The warmest months (with the highest average high temperature) are March and April (35.1°C).
The month with the lowest average high temperature is October (30.8°C).
- Average low temperature in September: 22.1°C
The month with the highest average low temperature is April (24.4°C).
The coldest month (with the lowest average low temperature) is December (20.1°C).
Average pressure in September
Chirilagua, El Salvador
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is January (1013.4mbar).
The months with the lowest atmospheric pressure are May and October (1011.3mbar).
Average wind speed in September
Chirilagua, El Salvador
- Average wind speed in September: 4.5km/h
The windiest month (with the highest average wind speed) is January (7.4km/h).
The calmest months (with the lowest average wind speed) are September and October (4.5km/h).
Average humidity in September
Chirilagua, El Salvador
- Average humidity in September: 81%
The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is March (55%).
Average rainfall in September
Chirilagua, El Salvador
- Average rainfall in September: 122mm
The wettest month (with the highest rainfall) is October (179mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in September
Chirilagua, El Salvador
- Average rainfall days in September: 25.8 days
The month with the highest number of rainy days is September (25.8 days).
The month with the least rainy days is January (1.6 days).
Average daylight in September /
Average sunshine in September
Chirilagua, El Salvador
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is April (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 36min).
Average sunshine days in September
Chirilagua, El Salvador
- Average sunshine days in September: 2.7 days
The month with the most sunshine days is January (28.9 days).
The month with the least sunshine days is September (2.7 days).
Average UV index in September
Chirilagua, El Salvador
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, November and December (UV index 7).
The months with the lowest UV index are September and October (UV index 6).
Average cloud cover in September
Chirilagua, El Salvador
- Average cloud cover in September: 40
The month with the most cloud cover is October (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in September
Chirilagua, El Salvador
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are June, August, September and October (8km).
