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September Weather in Belle Terre, United States

Last updated: June 24, 2025

In September, the average temperature in Belle Terre, United States hovers around 21°C (70°F). Expect a comfortable range with a minimum of 11°C (52°F) and a peak reaching 30°C (87°F). However, be prepared for some rain, as 94 mm (3.7 in) of precipitation is likely over 10 days. With an average humidity of 68%, it’s a great time to enjoy the warmth while staying hydrated!

September Temperature in Belle Terre

In September, in Belle Terre, the average temperature is 21°C (70°F). The maximum can reach 30°C (87°F) and the minimum can be as low as 11°C (52°F). This pleasant climate makes Belle Terre an ideal destination for travelers seeking comfortable weather and outdoor activities.

September Weather in Belle Terre: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Belle Terre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belle Terre, September typically has an average temperature of 21°C (70°F), with highs reaching up to 30°C (87°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec353640485868757569614840
Data source: Temperature data for Belle Terre 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 Belle Terre

In Belle Terre in September, the precipitation amount is 94 mm (3.7 in) over a duration of 10 days.

September Precipitation Trends in Belle Terre

The chart displays monthly precipitation patterns in Belle Terre, 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 Belle Terre, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec801121041321198713110394143103140
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Belle Terre

In Belle Terre in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.

September Average Humidity in Belle Terre

This chart illustrates the average monthly humidity levels in Belle Terre, 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 Belle Terre is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Belle Terre

In Belle Terre in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Belle Terre.

Maximum UV Index Levels in Belle Terre for September

The chart shows the monthly maximum UV Index (UVI) for Belle Terre 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 Belle Terre typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35681010998642
Data source: Belle Terre 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 Belle Terre Compares to Other Months

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

This table compares monthly weather conditions in Belle Terre, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)80 mm (3.1 inches)84%moderate
February Weather2°C (36°F)112 mm (4.4 inches)82%moderate
March Weather4°C (40°F)104 mm (4.1 inches)81%high
April Weather9°C (49°F)132 mm (5.2 inches)78%very high
May Weather14°C (58°F)119 mm (4.7 inches)69%very high
June Weather20°C (68°F)87 mm (3.4 inches)69%very high
July Weather24°C (76°F)131 mm (5.2 inches)62%very high
August Weather24°C (75°F)103 mm (4.0 inches)65%very high
September Weather21°C (70°F)94 mm (3.7 inches)68%very high
October Weather16°C (61°F)143 mm (5.6 inches)74%high
November Weather9°C (49°F)103 mm (4.0 inches)82%moderate
December Weather5°C (40°F)140 mm (5.5 inches)80%low

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