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 shift into September uncovers an average high-temperature of a warm 29.2°C (84.6°F), subtly different from the previous month. An average low-temperature of 22.1°C (71.8°F) marks the month of September in Guaymango.Heat index
The heat index value during September is calculated to be a fiery hot 36°C (96.8°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
The months with the highest humidity are September and October, with an average relative humidity of 81%.Rainfall
In Guaymango, in September, it is raining for 24 days, with typically 113mm (4.45") of accumulated precipitation. Throughout the year, there are 166.9 rainfall days, and 832mm (32.76") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 12min.On the first day of the month, sunrise is at 05:47 and sunset at 18:10. On the last day of September, sunrise is at 05:48 and sunset at 17:49 CST.
Sunshine
In September, the average sunshine is 9.6h.UV index
The months with the lowest UV index are June, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Ward off overexposure. Defence against solar harm is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What are the most humid months?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Guaymango have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Guaymango have in September?
What is the month with the lowest UV index?
How high is the UV index in September in Guaymango?
Average temperature in September
Guaymango, El Salvador
- Average high temperature in September: 29.2°C
The warmest month (with the highest average high temperature) is April (31.8°C).
The month with the lowest average high temperature is October (28.6°C).
- Average low temperature in September: 22.1°C
The month with the highest average low temperature is May (23.3°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure in September
Guaymango, El Salvador
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is January (1013.5mbar).
The month with the lowest atmospheric pressure is October (1011.3mbar).
Average wind speed in September
Guaymango, El Salvador
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is January (10.3km/h).
The calmest month (with the lowest average wind speed) is June (6.1km/h).
Average humidity in September
Guaymango, El Salvador
- Average humidity in September: 81%
The months with the highest relative humidity are September and October (81%).
The month with the lowest relative humidity is March (64%).
Average rainfall in September
Guaymango, El Salvador
- Average rainfall in September: 113mm
The wettest month (with the highest rainfall) is October (161mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in September
Guaymango, El Salvador
- Average rainfall days in September: 24 days
The month with the highest number of rainy days is September (24 days).
The month with the least rainy days is December (1.7 days).
Average daylight in September /
Average sunshine in September
Guaymango, 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 18min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is April (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in September
Guaymango, El Salvador
- Average sunshine days in September: 4.4 days
The month with the most sunshine days is January (28.7 days).
The month with the least sunshine days is September (4.4 days).
Average UV index in September
Guaymango, El Salvador
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May and July (UV index 7).
The months with the lowest UV index are June, August, September, October, November and December (UV index 6).
Average cloud cover in September
Guaymango, El Salvador
- Average cloud cover in September: 37
The months with the most cloud cover are June and September (Cloud cover 37).
The months with the least cloud cover are January and December (Cloud cover 12).
Average visibility in September
Guaymango, El Salvador
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, November and December (10km).
The month with the lowest visibility is October (9km).
