September weather forecast
Gregory Park, Jamaica

September

Weather in September

The first month of the autumn, September, is still a tropical month in Gregory Park, Jamaica, with temperature in the range of an average low of 23.3°C (73.9°F) and an average high of 31.4°C (88.5°F).

Temperature

The average high-temperature during September registers at a still hot 31.4°C (88.5°F), closely corresponding to the preceding month. Gregory Park's average low-temperature is measured at a warm 23.3°C (73.9°F) during September.

Heat index

In September, the average heat index is calculated to be a blistering 42°C (107.6°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In September, the average relative humidity in Gregory Park is 79%.

Rainfall

In Gregory Park, during September, the rain falls for 23.1 days and regularly aggregates up to 106mm (4.17") of precipitation. Throughout the year, there are 265.1 rainfall days, and 806mm (31.73") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:21. On the last day of September, sunrise is at 05:57 and sunset at 17:56 EST.

Sunshine

The average sunshine in September in Gregory Park is 10.9h.

UV index

The months with the lowest UV index are January through April, September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Frequently asked questions

Is it hot in Gregory Park during September?
In Gregory Park, 31.4°C (88.5°F) is the average high-temperature and 23.3°C (73.9°F) is the average low-temperature during September. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 42°C (107.6°F).
What is the average humidity in September in Gregory Park?
In September, the average relative humidity in Gregory Park is 79%.
How much does it rain in Gregory Park in September?
In Gregory Park, Jamaica, in September, during 23.1 rainfall days, 106mm (4.17") of precipitation is typically accumulated.
What is the average length of the day in September in Gregory Park?
The average day length in September is 12h and 14min.
When are sunrise and sunset in September in Gregory Park?
In September, on the first day of the month, sunrise is at 05:53 and sunset at 18:21. On the last day of the month, in Gregory Park, sunrise is at 05:57 and sunset at 17:56 EST.
How long on average sun shines in September in Gregory Park?
In September, the average sunshine duration in Gregory Park, Jamaica, is 10.9h.
What is the month with the lowest UV index in Gregory Park?
The months with the lowest UV index are January through April, September, November and December, with an average maximum UV index of 6.
How high is the UV index in September in Gregory Park?
In September, the average daily maximum UV index in Gregory Park is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Gregory Park, Jamaica
Average temperature in September
Gregory Park, Jamaica
  • Average high temperature in September: 31.4°C

The warmest months (with the highest average high temperature) are July and August (31.7°C).
The month with the lowest average high temperature is January (28.4°C).

  • Average low temperature in September: 23.3°C

The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).

Average pressure in September - Gregory Park, Jamaica
Average pressure in September
Gregory Park, Jamaica
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).

Average wind speed in September - Gregory Park, Jamaica
Average wind speed in September
Gregory Park, Jamaica
  • Average wind speed in September: 6.8km/h

The windiest month (with the highest average wind speed) is June (9km/h).
The calmest month (with the lowest average wind speed) is November (6.6km/h).

Average humidity in September - Gregory Park, Jamaica
Average humidity in September
Gregory Park, Jamaica
  • Average humidity in September: 79%

The months with the highest relative humidity are October, November and December (81%).
The months with the lowest relative humidity are March, July and August (77%).

Average rainfall in September - Gregory Park, Jamaica
Average rainfall in September
Gregory Park, Jamaica
  • Average rainfall in September: 106mm

The wettest month (with the highest rainfall) is October (123mm).
The driest month (with the least rainfall) is January (26mm).

Average rainfall days in September - Gregory Park, Jamaica
Average rainfall days in September
Gregory Park, Jamaica
  • Average rainfall days in September: 23.1 days

The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is February (19.2 days).

Average daylight in September / Average sunshine in September - Gregory Park, Jamaica
Average daylight in September /
Average sunshine in September
Gregory Park, Jamaica
  • Average daylight in September: 12h and 1min

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 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in September - Gregory Park, Jamaica
Average sunshine days in September
Gregory Park, Jamaica
  • Average sunshine days in September: 1.7 days

The month with the most sunshine days is January (6 days).
The month with the least sunshine days is October (1.5 days).

Average UV index in September - Gregory Park, Jamaica
Average UV index in September
Gregory Park, Jamaica
  • Average UV index in September: 6

The months with the highest UV index are May, June, July, August and October (UV index 7).
The months with the lowest UV index are January, February, March, April, September, November and December (UV index 6).

Average cloud cover in September - Gregory Park, Jamaica
Average cloud cover in September
Gregory Park, Jamaica
  • Average cloud cover in September: 29

The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in September - Gregory Park, Jamaica
Average visibility in September
Gregory Park, Jamaica
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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