September weather forecast
Bluefields, Jamaica

Setting in the autumn in September, the weather conditions in Bluefields take a detour towards coolness from the heat of August. Even though the average temperature drops slightly to 29.8°C (85.6°F), the level of daylight remains virtually the same. Coupled with consistent wind speed and visibly resolute cloudiness, September heralds the transition from the heated summer to the cooler climes. Marked by slightly cooler temperatures and unchanged wind speed, September serves as a bridge between Bluefields' sizzling summer and forthcoming fall.

Temperature

September's arrival shows an average high-temperature of a moderately hot 29.8°C (85.6°F), hardly different from the previous month. The nights of September anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 27.9°C (82.2°F).

Heat index

During September, the heat index is calculated to be a fiery hot 36°C (96.8°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity in Bluefields is 75%.

Rainfall

In Bluefields, in September, during 22.1 rainfall days, 93mm (3.66") of precipitation is typically accumulated. Throughout the year, in Bluefields, there are 236.8 rainfall days, and 822mm (32.36") of precipitation is accumulated.

Sea temperature

August and September, with an average sea temperature of 29.8°C (85.6°F), are months with the warmest seawater in Bluefields.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

In September, the average length of the day is 12h and 14min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:25. On the last day of September, sunrise is at 06:02 and sunset at 18:01 EST.

Sunshine

In Bluefields, the average sunshine in September is 9.7h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Bluefields, Jamaica. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.