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September Weather in Speightstown, Barbados

Last updated: August 22, 2025

In Speightstown, Barbados, the average temperature in September hovers around 28°C (82°F), with a comfortable range between 25°C (78°F) and 29°C (85°F). Expect a generous precipitation amount of 149 mm (5.8 in) spread over 18 days, contributing to an average humidity level of 80%. This climate creates a lush and vibrant atmosphere, perfect for exploring!

September Temperature in Speightstown

In September in Speightstown, 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 Speightstown: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Speightstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Speightstown, 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 Speightstown 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 Speightstown

In Speightstown in September, the precipitation amount is 149 mm (5.8 in) spread over 18 days.

September Precipitation Trends in Speightstown

The chart displays monthly precipitation patterns in Speightstown, 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 Speightstown, September typically receives around 149 mm (5.8 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec39303224428012416414917812050
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Speightstown

In Speightstown 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 Speightstown

This chart illustrates the average monthly humidity levels in Speightstown, 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 Speightstown is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%77%78%78%80%82%84%80%80%81%81%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Speightstown

In Speightstown 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 Speightstown, you can check here.

Maximum UV Index Levels in Speightstown for September

The chart shows the monthly maximum UV Index (UVI) for Speightstown 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 Speightstown typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111213141413131314131010
Data source: Speightstown 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 Speightstown Compares to Other Months

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

This table compares monthly weather conditions in Speightstown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)39 mm (1.5 inches)78%extreme
February Weather25°C (78°F)30 mm (1.2 inches)77%extreme
March Weather26°C (78°F)32 mm (1.3 inches)78%extreme
April Weather26°C (79°F)24 mm (1.0 inches)78%extreme
May Weather27°C (80°F)42 mm (1.7 inches)80%extreme
June Weather27°C (81°F)80 mm (3.1 inches)82%extreme
July Weather27°C (81°F)124 mm (4.9 inches)84%extreme
August Weather27°C (81°F)164 mm (6.4 inches)80%extreme
September Weather28°C (82°F)149 mm (5.8 inches)80%extreme
October Weather27°C (81°F)178 mm (7.0 inches)81%extreme
November Weather27°C (81°F)120 mm (4.7 inches)81%very high
December Weather26°C (80°F)50 mm (2.0 inches)80%very high

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