September weather forecast
Rio Grande, Panama

September, the first month of the autumn in Rio Grande, is also a moderately hot month, with temperature in the range of an average low of 22.5°C (72.5°F) and an average high of 29.7°C (85.5°F).

Temperature

Entering September, the average high-temperature is recorded at a still moderately hot 29.7°C (85.5°F), exhibiting a minimal shift from August's 29.8°C (85.6°F). Throughout September, an average nighttime temperature of 22.5°C (72.5°F) is experienced.

Heat index

The heat index in September is computed to be a fiery hot 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in September in Rio Grande is 86%.

Rainfall

In Rio Grande, during September, the rain falls for 27 days and regularly aggregates up to 190mm (7.48") of precipitation. Throughout the year, there are 247.4 rainfall days, and 1423mm (56.02") of precipitation is accumulated.

Daylight

In Rio Grande, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 06:13 and sunset at 18:29. On the last day of September, sunrise is at 06:10 and sunset at 18:13 EST.

Sunshine

In September, the average sunshine is 7.7h.

UV index

The months with the lowest UV index in Rio Grande are July through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard 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:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.