September weather forecast
Cuisnahuat, El Salvador

The first month of the autumn, September, is also a moderately hot month in Cuisnahuat, El Salvador, with an average temperature ranging between min 22.1°C (71.8°F) and max 29.2°C (84.6°F).

Temperature

As Cuisnahuat welcomes September, the average high-temperature is noted at a warm 29.2°C (84.6°F), closely aligning with the preceding month. Cuisnahuat's average low-temperature is measured at an agreeable 22.1°C (71.8°F) during September.

Heat index

The heat index in September is calculated to be a torrid 36°C (96.8°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for 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 is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The months with the highest humidity in Cuisnahuat are September and October, with an average relative humidity of 81%.

Rainfall

In Cuisnahuat, in September, during 24 rainfall days, 113mm (4.45") of precipitation is typically accumulated. In Cuisnahuat, during the entire year, the rain falls for 166.9 days and collects up to 832mm (32.76") of precipitation.

Daylight

In September, the average length of the day is 12h and 12min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:09. On the last day of September, in Cuisnahuat, sunrise is at 05:47 and sunset at 17:48 CST.

Sunshine

The average sunshine in September is 9.6h.

UV index

June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during September translates into the following guidance:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.