September weather forecastUnity Hall, Jamaica
September
Weather in September
September, the first month of the autumn in Unity Hall, is still a warm month, with temperature in the range of an average low of 26.7°C (80.1°F) and an average high of 29.5°C (85.1°F).Temperature
Upon the onset of September, Unity Hall witnesses an average high-temperature of a still moderately hot 29.5°C (85.1°F), showing a close resemblance to the prior month. September nights in Unity Hall, Jamaica, document an average temperature reading of 26.7°C (80.1°F).Heat index
The heat index for September is computed to be a very hot 35°C (95°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical 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 are extremely significant for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September in Unity Hall, Jamaica, is 76%.Rainfall
In Unity Hall, Jamaica, during September, the rain falls for 18.4 days and regularly aggregates up to 88mm (3.46") of precipitation. Throughout the year, in Unity Hall, there are 177.2 rainfall days, and 687mm (27.05") of precipitation is accumulated.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 18:00 EST.
Sunshine
The average sunshine in September is 10.3h.UV index
The months with the highest UV index are January, March through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: In September, an average UV index of 7 transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Unity Hall, Jamaica
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is January (26.8°C).
- Average low temperature in September: 26.7°C
The months with the highest average low temperature are July and August (26.8°C).
The coldest month (with the lowest average low temperature) is February (23.8°C).
Average pressure in September
Unity Hall, Jamaica
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is January (1015.6mbar).
The month with the lowest atmospheric pressure is October (1011.4mbar).
Average wind speed in September
Unity Hall, Jamaica
- Average wind speed in September: 13km/h
The windiest month (with the highest average wind speed) is December (20km/h).
The calmest month (with the lowest average wind speed) is September (13km/h).
Average humidity in September
Unity Hall, Jamaica
- Average humidity in September: 76%
The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Unity Hall, Jamaica
- Average rainfall in September: 88mm
The wettest month (with the highest rainfall) is May (90mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in September
Unity Hall, Jamaica
- Average rainfall days in September: 18.4 days
The month with the highest number of rainy days is September (18.4 days).
The month with the least rainy days is February (10.6 days).
Average daylight in September /
Average sunshine in September
Unity Hall, 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 0min).
- Average sunshine in September: 10h and 18min
The months with the most sunshine are July and August (Average sunshine: 11h and 30min).
The months with the least sunshine are November and December (Average sunshine: 6h and 36min).
Average sunshine days in September
Unity Hall, Jamaica
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is December (18 days).
The month with the least sunshine days is September (9.8 days).
Average UV index in September
Unity Hall, Jamaica
- Average UV index in September: 7
The months with the highest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is February (UV index 6).
Average cloud cover in September
Unity Hall, Jamaica
- Average cloud cover in September: 22
The months with the most cloud cover are January, May and November (Cloud cover 28).
The month with the least cloud cover is July (Cloud cover 21).
Average visibility in September
Unity Hall, 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).
