Kingston
Jamaica
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Kingston, Jamaica

The view of the brightly lit Kingston city, Jamaica, at night
The view of the brightly lit Kingston city, Jamaica, at night
September, the first month of the autumn, in Kingston, is still a tropical month, with temperature in the range of an average low of 24°C (75.2°F) and an average high of 32.1°C (89.8°F).

Temperature

In Kingston, the average high-temperature in September is practically the same as in August - a still tropical 32.1°C (89.8°F). In September, the average low-temperature is 24°C (75.2°F).

Heat index

In September, the average heat index is evaluated at a scorching 43.5°C (110.3°F). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like wind, pregnancy, metabolic differences, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Kingston, it is raining for 11 days, with typically 114mm (4.5") of accumulated precipitation. Throughout the year, there are 93 rainfall days, and 813mm (32") of precipitation is accumulated.

Sea temperature

With an average sea temperature of 29.5°C (85.1°F), September is the month with the warmest seawater in Kingston.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In Kingston, the average length of the day is 12.2h.

Sunshine

With an average of 7.1h of sunshine, September has the least sunshine of the year in Kingston, Jamaica.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Kingston. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in September in Kingston?

In September, in Kingston, the average high-temperature is 32.1°C (89.8°F), and the average low-temperature is 24°C (75.2°F). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that represents influence of the relative humidity to air temperaure, is evaluated at 43.5°C (110.3°F).

What is the average humidity in September in Kingston?

The average relative humidity in September is 77%.

How many days does it rain in September in Kingston?

In Kingston, in September, it is raining for 11 days, with typically 114mm (4.5") of accumulated precipitation.

What month is the sea warmest in Kingston?

The month with the warmest seawater is September, with an average sea temperature of 29.5°C (85.1°F).

What is the water temperature in September in Kingston?

In Kingston, Jamaica, in September, the average water temperature is 29.5°C (85.1°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Kingston?

In Kingston, the average length of the day in September is 12.2h.

What is the month with the least sunshine in Kingston?

September has the least sunshine of the year in Kingston, Jamaica, with an average of 7.1h of sunshine.

How long on average sun shines in September in Kingston?

In September, the average sunshine is 7.1h.

What are the months with the highest UV index in Kingston?

Months with the highest UV index in Kingston are March through September, with an average maximum UV index of 12.

What is the UV index intensity in September in Kingston?

In Kingston, Jamaica, the average daily maximum UV index in September is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Kingston, Jamaica
  • Average high temperature in September: 32.1°C

The warmest month (with the highest average high temperature) is July (32.8°C).
The month with the lowest average high temperature is February (30.2°C).

  • Average low temperature in September: 24°C

The month with the highest average low temperature is July (24.3°C).
The coldest month (with the lowest average low temperature) is February (21°C).

Average humidity in September - Kingston, Jamaica
  • Average humidity in September: 77%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is July (70%).

Average rainfall in September - Kingston, Jamaica
  • Average rainfall in September: 114mm

The wettest month (with the highest rainfall) is October (177mm).
The driest month (with the lowest rainfall) is January (18mm).

Average rainfall days in September - Kingston, Jamaica
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is October (14 days).
Months with the lowest number of rainy days are January, February and March (5 days).

Average sea temperature in September - Kingston, Jamaica
  • Average sea temperature in September: 29.5°C

The best month for swimming (with the highest average sea temperature) is September (29.5°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).

Average daylight in September / Average sunshine in September - Kingston, Jamaica
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11.1h).

  • Average sunshine in September: 7.1h

Months with most sunshine are February and April (Average sunshine: 8.6h).
The month with least sunshine is September (Average sunshine: 7.1h).

Average UV index in September - Kingston, Jamaica
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 8).