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September Weather in Dennery, Saint Lucia

Last updated: August 31, 2025

In Dennery, Saint Lucia, the average temperature in September hovers around 28°C (83°F), with a comfortable range between a minimum of 25°C (76°F) and a maximum of 32°C (90°F). The region experiences an average precipitation of 121 mm (4.8 in) spread over 19 days, contributing to an average humidity level of 80%. Enjoy the warmth, but be prepared for those occasional showers!

September Temperature in Dennery

In September in Dennery, the average temperature is 28°C (83°F), with maximums reaching up to 32°C (90°F) and minimums dropping as low as 25°C (76°F). This pleasant climate makes Dennery an ideal destination for travelers seeking warm weather and sunshine.

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

The chart illustrates September temperature patterns in Dennery, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dennery, September typically has an average temperature of 28°C (83°F), with highs reaching up to 32°C (90°F) and lows dropping to around 25°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878798181818282818079
Data source: Temperature data for Dennery 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 Dennery

In Dennery in September, the precipitation amount is 121 mm (4.8 in) spread over 19 days.

September Precipitation Trends in Dennery

The chart displays monthly precipitation patterns in Dennery, 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 Dennery, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec36333835396510511312112810346
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dennery

In Dennery in September, humidity is 80%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making travel feel sluggish and sticky, as every movement generates a sheen of perspiration that clings to your skin.

September Average Humidity in Dennery

This chart illustrates the average monthly humidity levels in Dennery, 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 Dennery is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%80%80%79%80%83%84%81%80%82%83%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dennery

In Dennery 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 Dennery, you can check here.

Maximum UV Index Levels in Dennery for September

The chart shows the monthly maximum UV Index (UVI) for Dennery 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 Dennery typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141313141412109
Data source: Dennery 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 Dennery Compares to Other Months

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

This table compares monthly weather conditions in Dennery, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)36 mm (1.4 inches)81%very high
February Weather25°C (78°F)33 mm (1.3 inches)80%extreme
March Weather26°C (79°F)38 mm (1.5 inches)80%extreme
April Weather26°C (80°F)35 mm (1.4 inches)79%extreme
May Weather27°C (81°F)39 mm (1.6 inches)80%extreme
June Weather27°C (81°F)65 mm (2.6 inches)83%extreme
July Weather27°C (81°F)105 mm (4.1 inches)84%extreme
August Weather28°C (82°F)113 mm (4.5 inches)81%extreme
September Weather28°C (83°F)121 mm (4.8 inches)80%extreme
October Weather27°C (81°F)128 mm (5.1 inches)82%extreme
November Weather27°C (81°F)103 mm (4.1 inches)83%very high
December Weather26°C (80°F)46 mm (1.8 inches)82%very high

Compare Dennery's Climate with Cities Worldwide