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September Weather in Gainesville, United States

Last updated: June 24, 2025

In September, the average temperature in Gainesville, United States is a pleasant 23°C (74°F). However, temperatures can vary, with a minimum of 10°C (50°F) and a maximum of 35°C (96°F). Expect about 121 mm (4.8 in) of precipitation spread over 10 days, contributing to an average humidity of 76%. Prepare for a mix of warmth and moisture during your stay!

September Temperature in Gainesville

In September in Gainesville, the average temperature is 23°C (74°F). Maximum temperatures can reach up to 35°C (96°F), while minimum temperatures can drop as low as 10°C (50°F). This makes Gainesville a pleasant destination for travelers seeking warm days and cool nights.

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

The chart illustrates September temperature patterns in Gainesville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gainesville, September typically has an average temperature of 23°C (74°F), with highs reaching up to 35°C (96°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec455055617075797874655248
Data source: Temperature data for Gainesville 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 Gainesville

In Gainesville in September, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.

September Precipitation Trends in Gainesville

The chart displays monthly precipitation patterns in Gainesville, 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 Gainesville, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec11315813712413112511114512116482141
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gainesville

In Gainesville in September humidity is 76%. With an average temperature of 23°C (74°F), this humidity feels like a warm, thick blanket wrapping around you, making outdoor exploration feel a bit sluggish and requiring frequent breaks for hydration and respite from the heat.

September Average Humidity in Gainesville

This chart illustrates the average monthly humidity levels in Gainesville, 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 Gainesville is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gainesville

In Gainesville in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Gainesville.

Maximum UV Index Levels in Gainesville for September

The chart shows the monthly maximum UV Index (UVI) for Gainesville 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 Gainesville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47811111111109864
Data source: Gainesville 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 Gainesville Compares to Other Months

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

This table compares monthly weather conditions in Gainesville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)113 mm (4.4 inches)86%moderate
February Weather10°C (50°F)158 mm (6.2 inches)86%high
March Weather13°C (55°F)137 mm (5.4 inches)86%very high
April Weather16°C (62°F)124 mm (4.9 inches)82%extreme
May Weather21°C (70°F)131 mm (5.2 inches)85%extreme
June Weather24°C (76°F)125 mm (4.9 inches)85%extreme
July Weather26°C (79°F)111 mm (4.4 inches)83%extreme
August Weather25°C (78°F)145 mm (5.7 inches)76%very high
September Weather23°C (74°F)121 mm (4.8 inches)76%very high
October Weather18°C (65°F)163 mm (6.4 inches)80%very high
November Weather11°C (52°F)82 mm (3.2 inches)88%high
December Weather9°C (48°F)141 mm (5.6 inches)88%moderate

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