September weather forecast
Ateos, El Salvador

September, the first month of the autumn in Ateos, is also a moderately hot month, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 29.8°C (85.6°F).

Temperature

September brings an average high-temperature of a warm 29.8°C (85.6°F), nearly identical to the preceding month. Ateos in September anticipates an average nighttime temperature of 21.5°C (70.7°F).

Heat index

September's mean heat index is calculated to be a very hot 38°C (100.4°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

September and October, with an average relative humidity of 82%, are the most humid months.

Rainfall

In Ateos, El Salvador, in September, it is raining for 26.3 days, with typically 142mm (5.59") of accumulated precipitation. Throughout the year, there are 187 rainfall days, and 1106mm (43.54") 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 05:46 and sunset at 18:08. On the last day of September, sunrise is at 05:47 and sunset at 17:47 CST.

Sunshine

In Ateos, the average sunshine in September is 9.3h.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.