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September Weather in Duncans, Jamaica

Last updated: August 23, 2025

In Duncans, Jamaica, the average temperature in September hovers around 28°C (82°F), with a minimum of 24°C (76°F) and a maximum of 33°C (91°F). During this time, expect precipitation of 165 mm (6.5 in) spread across approximately 24 days, resulting in an average humidity of 73%.

September Temperature in Duncans

In September in Duncans, the average temperature is 28°C (82°F), with maximums reaching 33°C (91°F) and minimums dropping to as low as 24°C (76°F). This pleasant and warm climate makes Duncans an ideal destination for travelers seeking sunshine and outdoor activities.

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

The chart illustrates September temperature patterns in Duncans, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duncans, September typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (91°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec767677788081828282807978
Data source: Temperature data for Duncans 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 Duncans

In Duncans in September, the precipitation amount is 165 mm (6.5 in) spread over 24 days.

September Precipitation Trends in Duncans

The chart displays monthly precipitation patterns in Duncans, 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 Duncans, September typically receives around 165 mm (6.5 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec6334808114371779116517412973
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Duncans

In Duncans in September humidity is 73%. With an average temperature of 28°C (82°F), this humidity feels like stepping into a warm, thick blanket, making traveling feel sticky and heavier; staying hydrated and taking breaks in the shade becomes essential.

September Average Humidity in Duncans

This chart illustrates the average monthly humidity levels in Duncans, 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 Duncans is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%72%71%72%69%70%72%73%73%74%76%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Duncans

In Duncans in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Duncans.

Maximum UV Index Levels in Duncans for September

The chart shows the monthly maximum UV Index (UVI) for Duncans 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 Duncans typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313131313131298
Data source: Duncans 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 Duncans Compares to Other Months

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

This table compares monthly weather conditions in Duncans, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)63 mm (2.5 inches)74%very high
February Weather25°C (77°F)34 mm (1.3 inches)72%extreme
March Weather25°C (77°F)80 mm (3.2 inches)71%extreme
April Weather26°C (78°F)81 mm (3.2 inches)72%extreme
May Weather27°C (80°F)143 mm (5.6 inches)69%extreme
June Weather27°C (82°F)71 mm (2.8 inches)70%extreme
July Weather28°C (82°F)77 mm (3.0 inches)72%extreme
August Weather28°C (83°F)91 mm (3.6 inches)73%extreme
September Weather28°C (82°F)165 mm (6.5 inches)73%extreme
October Weather27°C (81°F)174 mm (6.9 inches)73%extreme
November Weather26°C (79°F)129 mm (5.1 inches)76%very high
December Weather25°C (78°F)73 mm (2.9 inches)75%very high

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