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
Weather in September
Temperature
At the start of September, Santa Rosa Guachipilín's average high-temperature reaches a warm 29.3°C (84.7°F), subtly different from the preceding month. During September, the average low-temperature is recorded at a refreshing 18.9°C (66°F).Heat index
During September, the heat index is estimated at a sweltering 37°C (98.6°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In Santa Rosa Guachipilín, El Salvador, the average relative humidity in September is 85%.Rainfall
In Santa Rosa Guachipilín, El Salvador, during September, the rain falls for 24.7 days and regularly aggregates up to 141mm (5.55") of precipitation. Throughout the year, in Santa Rosa Guachipilín, there are 181.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 13min.On the first day of September, sunrise is at 05:45 and sunset at 18:08. On the last day of the month, sunrise is at 05:46 and sunset at 17:47 CST.
Sunshine
In September, the average sunshine in Santa Rosa Guachipilín is 7.8h.UV index
With an average maximum UV index of 5, September is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
How hot does it get in Santa Rosa Guachipilín in September?
What is the average humidity in September in Santa Rosa Guachipilín?
How much does it rain in Santa Rosa Guachipilín in September?
What is the average length of the day in September in Santa Rosa Guachipilín?
When are sunrise and sunset in September in Santa Rosa Guachipilín?
How long on average sun shines in September in Santa Rosa Guachipilín?
What is the month with the lowest UV index in Santa Rosa Guachipilín?
What is the UV index reading in September in Santa Rosa Guachipilín?
Average temperature in September
Santa Rosa Guachipilín, El Salvador
- Average high temperature in September: 29.3°C
The warmest month (with the highest average high temperature) is April (33.2°C).
The month with the lowest average high temperature is October (27.9°C).
- Average low temperature in September: 18.9°C
The month with the highest average low temperature is May (20.7°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).
Average pressure in September
Santa Rosa Guachipilín, El Salvador
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The months with the lowest atmospheric pressure are May and October (1011.7mbar).
Average wind speed in September
Santa Rosa Guachipilín, El Salvador
- Average wind speed in September: 4.2km/h
The windiest month (with the highest average wind speed) is January (9km/h).
The calmest month (with the lowest average wind speed) is September (4.2km/h).
Average humidity in September
Santa Rosa Guachipilín, El Salvador
- Average humidity in September: 85%
The month with the highest relative humidity is October (86%).
The month with the lowest relative humidity is March (63%).
Average rainfall in September
Santa Rosa Guachipilín, El Salvador
- Average rainfall in September: 141mm
The wettest month (with the highest rainfall) is May (198mm).
The driest month (with the least rainfall) is January (2mm).
Average rainfall days in September
Santa Rosa Guachipilín, El Salvador
- Average rainfall days in September: 24.7 days
The month with the highest number of rainy days is June (25 days).
The month with the least rainy days is January (1.9 days).
Average daylight in September /
Average sunshine in September
Santa Rosa Guachipilín, El Salvador
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is October (Average sunshine: 7h and 12min).
Average sunshine days in September
Santa Rosa Guachipilín, El Salvador
- Average sunshine days in September: 3.7 days
The months with the most sunshine days are January and December (28.5 days).
The month with the least sunshine days is September (3.7 days).
Average UV index in September
Santa Rosa Guachipilín, El Salvador
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in September
Santa Rosa Guachipilín, El Salvador
- Average cloud cover in September: 57
The month with the most cloud cover is September (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 17).
Average visibility in September
Santa Rosa Guachipilín, El Salvador
- Average visibility in September: 6km
The months with the highest visibility are February, March and April (10km).
The month with the lowest visibility is September (6km).
Santa Rosa Guachipilín, El Salvador
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