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September Weather in Port Nelson, Bahamas

Last updated: August 22, 2025

In Port Nelson, Bahamas, the average temperature in September hovers around 28°C (82°F), with a pleasant minimum of 25°C (77°F) and a maximum reaching 30°C (86°F). Prepare for some rain, as 123 mm (4.8 in) of precipitation typically falls over 17 days. Be ready for a bit of humidity too, with an average level of 78%!

September Temperature in Port Nelson

In September in Port Nelson, the average temperature is 28°C (82°F). The maximum can reach 30°C (86°F) and the minimum can be as low as 25°C (77°F). This mild and warm weather makes it an ideal time to explore and enjoy outdoor activities in Port Nelson.

September Weather in Port Nelson: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Port Nelson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Nelson, September typically has an average temperature of 28°C (82°F), with highs reaching up to 30°C (86°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575767881828282817977
Data source: Temperature data for Port Nelson 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 Port Nelson

In Port Nelson in September, the precipitation amount is 123 mm (4.8 in) over a span of 17 days.

September Precipitation Trends in Port Nelson

The chart displays monthly precipitation patterns in Port Nelson, 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 Port Nelson, September typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec54383144125446010112313714067
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Port Nelson

In Port Nelson in September humidity is 78%. With an average temperature of 28°C (82°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting and overwhelming, potentially leading to a slower pace while exploring.

September Average Humidity in Port Nelson

This chart illustrates the average monthly humidity levels in Port Nelson, 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 Port Nelson is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%80%79%78%77%78%79%79%78%78%79%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Port Nelson

In Port Nelson in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Port Nelson.

Maximum UV Index Levels in Port Nelson for September

The chart shows the monthly maximum UV Index (UVI) for Port Nelson 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 Port Nelson typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710111212121212121087
Data source: Port Nelson 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 Port Nelson Compares to Other Months

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

This table compares monthly weather conditions in Port Nelson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)54 mm (2.1 inches)79%high
February Weather24°C (76°F)38 mm (1.5 inches)80%very high
March Weather24°C (75°F)31 mm (1.2 inches)79%extreme
April Weather25°C (77°F)44 mm (1.7 inches)78%extreme
May Weather26°C (78°F)125 mm (4.9 inches)77%extreme
June Weather27°C (81°F)44 mm (1.7 inches)78%extreme
July Weather28°C (82°F)60 mm (2.4 inches)79%extreme
August Weather28°C (83°F)100 mm (4.0 inches)79%extreme
September Weather28°C (82°F)123 mm (4.8 inches)78%extreme
October Weather27°C (81°F)137 mm (5.4 inches)78%very high
November Weather26°C (79°F)140 mm (5.5 inches)79%very high
December Weather25°C (77°F)67 mm (2.7 inches)79%high

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