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September Weather in Boynton Beach, United States

Last updated: June 24, 2025

In September, the average temperature in Boynton Beach, United States is a warm 28°C (83°F). You can expect a minimum of 24°C (76°F) and a maximum of 34°C (93°F), making it quite a balmy month. However, be prepared for some rain, as the area sees an average precipitation of 197 mm (7.7 in) over 23 days. With an average humidity of 83%, it's a time to stay hydrated and enjoy the tropical vibes!

September Temperature in Boynton Beach

In September in Boynton Beach, the average temperature is 28°C (83°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop to as low as 24°C (76°F). This climate makes Boynton Beach an ideal destination for travelers seeking warm and pleasant weather.

September Weather in Boynton Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Boynton Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boynton Beach, September typically has an average temperature of 28°C (83°F), with highs reaching up to 34°C (93°F) and lows dropping to around 24°C (76°F).
JanFebMarAprMayJunJulAugSepOctNovDec697373767981838382817572
Data source: Temperature data for Boynton Beach 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 Boynton Beach

In Boynton Beach in September, the total precipitation amount is 197 mm (7.7 in), occurring over the course of 23 days.

September Precipitation Trends in Boynton Beach

The chart displays monthly precipitation patterns in Boynton Beach, 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 Boynton Beach, September typically receives around 197 mm (7.7 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec415437891612081841951971589749
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Boynton Beach

In Boynton Beach in September humidity is 83%. With an average temperature of 28°C (83°F), this humidity feels like a warm, sticky blanket wrapping around you, making travel uncomfortable and requiring frequent breaks to hydrate and cool down.

September Average Humidity in Boynton Beach

This chart illustrates the average monthly humidity levels in Boynton Beach, 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 Boynton Beach is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%80%75%68%65%73%77%80%83%83%83%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Boynton Beach

In Boynton Beach in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Boynton Beach.

Maximum UV Index Levels in Boynton Beach for September

The chart shows the monthly maximum UV Index (UVI) for Boynton Beach 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 Boynton Beach typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101212121212111086
Data source: Boynton Beach 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 Boynton Beach Compares to Other Months

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

This table compares monthly weather conditions in Boynton Beach, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (69°F)41 mm (1.6 inches)83%high
February Weather23°C (73°F)54 mm (2.1 inches)80%very high
March Weather23°C (73°F)37 mm (1.4 inches)75%very high
April Weather25°C (76°F)89 mm (3.5 inches)68%extreme
May Weather26°C (79°F)161 mm (6.3 inches)65%extreme
June Weather27°C (82°F)207 mm (8.2 inches)73%extreme
July Weather28°C (83°F)184 mm (7.2 inches)77%extreme
August Weather29°C (84°F)195 mm (7.7 inches)80%extreme
September Weather28°C (83°F)197 mm (7.7 inches)83%extreme
October Weather27°C (81°F)158 mm (6.2 inches)83%very high
November Weather24°C (76°F)97 mm (3.8 inches)83%very high
December Weather22°C (72°F)48 mm (1.9 inches)84%high

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