September weather forecast
Jacmel, Haiti

September in Jacmel retains warm tropical conditions with continued heavy rainfall. Rainfall remains more or less the same as August, registering at 71mm (2.8"). Despite the humidity and the prospect of showers, the warming sea temperatures persist, ensuring that coastal water activities remain favorable. The city retains its charm despite the wetter conditions, promising an enriching experience for those who do not mind a bit of tropical rain.

Temperature

During September, Jacmel records an average high-temperature of a still warm 29.3°C (84.7°F), marking a slight divergence from August's 29.7°C (85.5°F). Jacmel's nights throughout September are marked by an average low temperature of 25.3°C (77.5°F), a minor drop from the day's high.

Heat index

The average heat index in September is evaluated at a torrid 35°C (95°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Jacmel, the average relative humidity in September is 76%.

Rainfall

In September, the rain falls for 19.3 days. Throughout September, 71mm (2.8") of precipitation is accumulated. Throughout the year, in Jacmel, there are 196.7 rainfall days, and 531mm (20.91") of precipitation is accumulated.

Sea temperature

The month with the warmest seawater in Jacmel is September, with an average sea temperature of 29.6°C (85.3°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

The average length of the day in September in Jacmel, Haiti, is 12h and 14min.
On the first day of the month, sunrise is at 06:35 and sunset at 19:04. On the last day of September, sunrise is at 06:40 and sunset at 18:39 EDT.

Sunshine

In September, the average sunshine in Jacmel is 9.9h.

UV index

January, March through October, with an average maximum UV index of 7, are months with the highest UV index in Jacmel. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Ward off overexposure. Defence against solar harm is crucial. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.