September weather forecastBuff Bay, Jamaica
September
Weather in September
The tropical climate persists in September, with the sea reaching a formidable temperature of 29.8°C (85.6°F). Rainfall takes a slight reprieve, downsizing to 118mm (4.65") in total over 25.5 days. Additionally, noted changes lie in the wind's speed, which begins to dwindle down to incorporate some calmness into the weather patterns. As Buff Bay eases out of summer, the physical environment obstinately maintains its warmth and wetness.Temperature
The average high-temperature for September is a still moderately hot 28.5°C (83.3°F), closely aligning with the temperature of the preceding month. Buff Bay consistently logs a low temperature averaging a still warm 25.8°C (78.4°F) during September, a modest drop from daytime temperatures.Heat index
During September, the heat index is appraised at a hot 34°C (93.2°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In September, the average relative humidity in Buff Bay is 81%.Rainfall
In September, the rain falls for 25.5 days. Throughout September, 118mm (4.65") of precipitation is accumulated. Throughout the year, in Buff Bay, there are 305.2 rainfall days, and 1242mm (48.9") of precipitation is accumulated.Sea temperature
With an average sea temperature of 29.8°C (85.6°F), September is the month with the warmest seawater.Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.
Daylight
In September, the average length of the day is 12h and 14min.On the first day of the month, sunrise is at 05:52 and sunset at 18:20. On the last day of September, in Buff Bay, sunrise is at 05:57 and sunset at 17:55 EST.
Sunshine
In Buff Bay, Jamaica, the average sunshine in September is 10.4h.UV index
The months with the highest UV index are April through July, September and October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, a daily UV index of 7 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be attentive! The UV exposure is heightened with reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Buff Bay, Jamaica
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is February (25.9°C).
- Average low temperature in September: 25.8°C
The month with the highest average low temperature is August (26.1°C).
The coldest month (with the lowest average low temperature) is March (23.1°C).
Average pressure in September
Buff Bay, Jamaica
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is January (1015.7mbar).
The month with the lowest atmospheric pressure is October (1011.6mbar).
Average wind speed in September
Buff Bay, Jamaica
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is June (18km/h).
The calmest month (with the lowest average wind speed) is September (12.8km/h).
Average humidity in September
Buff Bay, Jamaica
- Average humidity in September: 81%
The month with the highest relative humidity is June (83%).
The months with the lowest relative humidity are January, February and March (79%).
Average rainfall in September
Buff Bay, Jamaica
- Average rainfall in September: 118mm
The wettest month (with the highest rainfall) is August (147mm).
The driest month (with the least rainfall) is February (60mm).
Average rainfall days in September
Buff Bay, Jamaica
- Average rainfall days in September: 25.5 days
The month with the highest number of rainy days is August (27.8 days).
The month with the least rainy days is February (22.3 days).
Average sea temperature in September
Buff Bay, Jamaica
- Average sea temperature in September: 29.8°C
The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in September /
Average sunshine in September
Buff Bay, Jamaica
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 12min).
Average sunshine days in September
Buff Bay, Jamaica
- Average sunshine days in September: 1.7 days
The month with the most sunshine days is March (3.2 days).
The month with the least sunshine days is August (0.8 days).
Average UV index in September
Buff Bay, Jamaica
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, September and October (UV index 7).
The months with the lowest UV index are January, February, March, August, November and December (UV index 6).
Average cloud cover in September
Buff Bay, Jamaica
- Average cloud cover in September: 33
The month with the most cloud cover is June (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in September
Buff Bay, Jamaica
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
