September weather forecast
Chepo, Panama

Entering September, Chepo indicates an imminent closure of its extended rainy season. A visible decrease in rainfall to 188mm (7.4") over about 28 days underscores the beginning of this transition phase. Chepo’s sky sees lesser cloud cover, while the humidity drops, marking a retreat of the wet season. The clement tropical weather conditions offer a chance to relish the outdoor vibe of the city. With September giving way to October, the rainfall takes a reverse turn but without straying too far from the tropical setup.

Temperature

September's arrival in Chepo, Panama, brings an average high-temperature of a still warm 29°C (84.2°F), demonstrating subtle variation from the preceding month. Chepo indicates a consistently low-temperature of 24.2°C (75.6°F) during the nights of September.

Heat index

September's mean heat index is computed to be a fiery hot 36°C (96.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Chepo, the average relative humidity in September is 86%.

Rainfall

In Chepo, in September, during 28.8 rainfall days, 188mm (7.4") of precipitation is typically accumulated. Throughout the year, in Chepo, Panama, there are 309.6 rainfall days, and 2035mm (80.12") of precipitation is accumulated.

Daylight

The average length of the day in September in Chepo is 12h and 10min.
On the first day of September, sunrise is at 06:07 and sunset at 18:24. On the last day of the month, sunrise is at 06:04 and sunset at 18:07 EST.

Sunshine

In September, the average sunshine is 8h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. 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: An average maximum UV index of 7 in September leads to these recommendations:
Deflect overexposure. Sun protection is a necessity. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.