September weather forecast
Masahuat, El Salvador

September, the first month of the autumn in Masahuat, is still a warm month, with an average temperature fluctuating between 18.9°C (66°F) and 29.3°C (84.7°F).

Temperature

The advent of September denotes an average high-temperature of a moderately hot 29.3°C (84.7°F), subtly different from August's 30°C (86°F). Masahuat experiences a mean temperature of 18.9°C (66°F) during September nights.

Heat index

September's average heat index is computed to be a very hot 37°C (98.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. 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 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. 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. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Masahuat, the average relative humidity in September is 85%.

Rainfall

In Masahuat, during September, the rain falls for 24.7 days and regularly aggregates up to 141mm (5.55") of precipitation. In Masahuat, during the entire year, the rain falls for 181.4 days and collects up to 1055mm (41.54") of precipitation.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 05:45 and sunset at 18:09. On the last day of September, in Masahuat, sunrise is at 05:47 and sunset at 17:47 CST.

Sunshine

In Masahuat, the average sunshine in September is 7.8h.

UV index

The month with the lowest UV index in Masahuat is September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 5 in September leads to these guidelines:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.