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September Weather in Jamaica, Mexico

Last updated: August 27, 2025

In September, the average temperature in Jamaica, Mexico hovers around 19°C (66°F). Expect a pleasant range, with minima dipping to 11°C (53°F) and maxima reaching up to 27°C (81°F). However, be prepared for some wet days, as 148 mm (5.8 in) of precipitation may fall over approximately 20 days. With an average humidity of 85%, it's a month to enjoy the fresh air, but don't forget your umbrella!

September Temperature in Jamaica

In September in Jamaica, the average temperature is 19°C (66°F). Maximums can reach 27°C (81°F), and minimums can be as low as 11°C (53°F). Overall, it's a pleasant time to explore Jamaica with comfortable temperatures, making it ideal for outdoor activities.

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 19°C (66°F), with highs reaching up to 27°C (81°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec596267707168666666656259
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 is 148 mm (5.8 in) spread over 20 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 148 mm (5.8 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec811151060131146166148753810
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 85%. With an average temperature of 19°C (66°F), this humidity feels like a warm, sticky embrace that can make outdoor adventures feel more exhausting, as the air weighs heavy and every step can feel like a mini workout.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
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 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Jamaica, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10111415141414141412108
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 Weather15°C (59°F)8 mm (0.3 inches)70%very high
February Weather17°C (62°F)11 mm (0.4 inches)64%extreme
March Weather19°C (67°F)15 mm (0.6 inches)54%extreme
April Weather21°C (70°F)10 mm (0.4 inches)61%extreme
May Weather21°C (71°F)60 mm (2.4 inches)75%extreme
June Weather20°C (69°F)131 mm (5.2 inches)83%extreme
July Weather19°C (66°F)146 mm (5.7 inches)83%extreme
August Weather19°C (66°F)166 mm (6.5 inches)85%extreme
September Weather19°C (66°F)148 mm (5.8 inches)85%extreme
October Weather18°C (65°F)75 mm (3.0 inches)79%extreme
November Weather17°C (62°F)38 mm (1.5 inches)76%very high
December Weather15°C (59°F)10 mm (0.4 inches)74%very high

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