September weather forecast
San Pedro Sula, Honduras

September witnesses the rainfall peak at 152mm (5.98"), the year’s highest, even as sunlight hours reduce further to about 12.2 hours per day. Despite the abundant rainfall, temperature levels stay more or less stable. These consistent elevated temperatures combined with high rainfall levels and dwindling daylight hours make September one of the most humid months in San Pedro Sula.

Temperature

The onset of September in San Pedro Sula brings an average high-temperature of a still tropical 33.5°C (92.3°F), nearly matching the August temperature. During the September nights, an average temperature of 23.3°C (73.9°F) is observed in San Pedro Sula.

Heat index

The heat index value during September is evaluated at a burning hot 50°C (122°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Heat index values are typically calculated for conditions of shade and a light breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. 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. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In September, the average relative humidity in San Pedro Sula is 79%.

Rainfall

The month with the most rainfall is September, when the rain falls for 10 days and typically aggregates up to 152mm (5.98") of precipitation.

Daylight

The average length of the day in September in San Pedro Sula is 12h and 13min.
On the first day of the month, sunrise is at 05:39 and sunset at 18:04. On the last day of September, sunrise is at 05:41 and sunset at 17:41 CST.

Sunshine

In September, the average sunshine in San Pedro Sula is 6.1h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in San Pedro Sula. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, an average UV index of 12 transforms into the following instructions:
Adopt every vital precaution, unprotected skin and eyes may burn rapidly. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Applying and reapplying a broad-spectrum sunscreen with a minimum SPF 30 after every two hours, outdoor workout, or swim is recommended.