September weather forecast
Saint-Louis-du-Nord, Haiti

September marks the end of the summer season in Saint-Louis-du-Nord, with reductions in both temperature and daylight hours. While the rainfall persists heavily from August, the humidity reads higher than the previous month. It is notable that despite the decrease in sunlight, there is still an average of 10.1 hours of sunshine per day. As the wind speed drops, it adds a calming ambiance to the city. The blend of consistent visibility, decreased wind, and high rainfall makes this month a mix of bright, sunny days and soothing rain showers.

Temperature

In September, Saint-Louis-du-Nord notes an average high-temperature of a moderately hot 29.8°C (85.6°F), hardly different from the preceding month. An average low-temperature of 23.1°C (73.6°F) is recorded during the nights in September in Saint-Louis-du-Nord.

Heat index

The average heat index in September is estimated at a fiery hot 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Saint-Louis-du-Nord, the average relative humidity in September is 79%.

Rainfall

In September, the rain falls for 23.6 days. Throughout September, 101mm (3.98") of precipitation is accumulated. Throughout the year, there are 219.6 rainfall days, and 736mm (28.98") of precipitation is accumulated.

Sea temperature

September is the month with the warmest seawater in Saint-Louis-du-Nord, with an average sea temperature of 29.7°C (85.5°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.

Daylight

In Saint-Louis-du-Nord, Haiti, the average length of the day in September is 12h and 15min.
On the first day of the month, sunrise is at 06:35 and sunset at 19:05. On the last day of September, in Saint-Louis-du-Nord, sunrise is at 06:41 and sunset at 18:39 EDT.

Sunshine

In September, the average sunshine in Saint-Louis-du-Nord is 10.1h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: During September, 7 as the daily maximum UV index converts into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be alert! The reflection of water and sand augments UV radiation intensity.