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September Weather in Georgetown, Saint Vincent and the Grenadines

Last updated: August 31, 2025

In Georgetown, Saint Vincent and the Grenadines, the average temperature in September is a warm 28°C (82°F), with minimums dipping to 25°C (78°F) and maximums reaching 29°C (85°F). Expect a fair amount of precipitation, totaling 145 mm (5.7 in) over approximately 19 days of the month, coupled with an average humidity of 80%. Enjoy the tropical vibe, but don’t forget your umbrella!

September Temperature in Georgetown

In September in Georgetown, the average temperature is 28°C (82°F), with maximums reaching 29°C (85°F) and minimums dropping to as low as 25°C (78°F). This mild climate makes it an ideal destination for travelers seeking pleasant weather.

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

The chart illustrates September temperature patterns in Georgetown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Georgetown, September typically has an average temperature of 28°C (82°F), with highs reaching up to 29°C (85°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec787878798081818182818080
Data source: Temperature data for Georgetown 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 Georgetown

In Georgetown in September, the precipitation amount is 145 mm (5.7 in) over a period of 19 days.

September Precipitation Trends in Georgetown

The chart displays monthly precipitation patterns in Georgetown, 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 Georgetown, September typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec45323931459413515514516712354
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Georgetown

In Georgetown in September, humidity is 80%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities sweaty and demanding frequent breaks in the shade while traveling.

September Average Humidity in Georgetown

This chart illustrates the average monthly humidity levels in Georgetown, 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 Georgetown 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 Georgetown

In Georgetown 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 Georgetown, you can check here.

Maximum UV Index Levels in Georgetown for September

The chart shows the monthly maximum UV Index (UVI) for Georgetown 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 Georgetown typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111214141413131414131110
Data source: Georgetown 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 Georgetown Compares to Other Months

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

This table compares monthly weather conditions in Georgetown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)45 mm (1.8 inches)81%extreme
February Weather25°C (78°F)32 mm (1.3 inches)80%extreme
March Weather26°C (78°F)39 mm (1.5 inches)80%extreme
April Weather26°C (79°F)31 mm (1.2 inches)79%extreme
May Weather27°C (80°F)45 mm (1.8 inches)80%extreme
June Weather27°C (81°F)94 mm (3.7 inches)83%extreme
July Weather27°C (81°F)135 mm (5.3 inches)84%extreme
August Weather27°C (81°F)155 mm (6.1 inches)81%extreme
September Weather28°C (82°F)145 mm (5.7 inches)80%extreme
October Weather27°C (82°F)167 mm (6.6 inches)82%extreme
November Weather27°C (81°F)123 mm (4.8 inches)83%extreme
December Weather26°C (80°F)54 mm (2.1 inches)82%very high

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