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September Weather in Jamaica, United States

Last updated: June 24, 2025

In September, the average temperature in Jamaica, United States is a pleasant 16°C (61°F). However, be prepared for a range of temperatures, as lows can dip to -2°C (30°F), while highs may reach a warm 30°C (87°F). Expect some rain with an average precipitation of 105 mm (4.1 in) spread over 9 days, and enjoy the humidity at around 72%.

September Temperature in Jamaica

In September in Jamaica, the average temperature is 16°C (61°F). The maximum can reach 30°C (87°F), while the minimum can be as low as -2°C (30°F). Be sure to pack for a range of weather conditions to fully enjoy your trip!

September Weather in Jamaica: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Jamaica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jamaica, September typically has an average temperature of 16°C (61°F), with highs reaching up to 30°C (87°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec222531445565706861503627
Data source: Temperature data for Jamaica generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Jamaica

In Jamaica in September, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

September Precipitation Trends in Jamaica

The chart displays monthly precipitation patterns in Jamaica, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Jamaica, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec819780142105109164127105166106116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Jamaica

In Jamaica in September humidity is 72%. With an average temperature of 16°C (61°F), this humidity feels like a damp blanket wrapping around you, making every step feel heavier and requiring extra effort while traveling.

September Average Humidity in Jamaica

This chart illustrates the average monthly humidity levels in Jamaica, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Jamaica is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%76%72%67%64%72%81%87%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jamaica

In Jamaica in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Jamaica.

Maximum UV Index Levels in Jamaica for September

The chart shows the monthly maximum UV Index (UVI) for Jamaica in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Jamaica typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34681010997632
Data source: Jamaica September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Jamaica Compares to Other Months

Weather in Jamaica varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Jamaica, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Jamaica, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)81 mm (3.2 inches)89%moderate
February Weather-4°C (25°F)97 mm (3.8 inches)88%moderate
March Weather0°C (32°F)80 mm (3.1 inches)86%high
April Weather6°C (44°F)142 mm (5.6 inches)84%very high
May Weather13°C (56°F)105 mm (4.1 inches)76%very high
June Weather18°C (65°F)109 mm (4.3 inches)72%very high
July Weather21°C (70°F)164 mm (6.5 inches)66%very high
August Weather20°C (68°F)127 mm (5.0 inches)64%very high
September Weather16°C (61°F)105 mm (4.1 inches)72%high
October Weather10°C (50°F)166 mm (6.5 inches)81%high
November Weather2°C (36°F)106 mm (4.2 inches)87%moderate
December Weather-3°C (27°F)116 mm (4.6 inches)84%low

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