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July Weather in Jacksonville, United States

Last updated: June 24, 2025

In Jacksonville, United States, the average temperature for July reaches a warm 29°C (85°F). However, temperatures can fluctuate, ranging from a minimum of 20°C (67°F) to a scorching 42°C (108°F). Rainfall is prevalent during this month, with an average precipitation of 79 mm (3.1 in) over 13 days, contributing to an average humidity of 71%.

July Temperature in Jacksonville

In July in Jacksonville, the average temperature is 29°C (85°F), with maximums reaching up to 42°C (108°F) and minimums dropping to as low as 20°C (67°F). Travelers should be prepared for warm to hot weather, making it ideal for beach outings and outdoor activities but essential to stay hydrated and protected from the sun.

July Weather in Jacksonville: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Jacksonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jacksonville, July typically has an average temperature of 29°C (85°F), with highs reaching up to 42°C (108°F) and lows dropping to around 20°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec495261667581848580705853
Data source: Temperature data for Jacksonville 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.

July Precipitation in Jacksonville

In Jacksonville in July, the precipitation amount is 79 mm (3.1 in) over a span of 13 days.

July Precipitation Trends in Jacksonville

The chart displays monthly precipitation patterns in Jacksonville, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Jacksonville, July typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec10914012013214810079798511165115
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Jacksonville

In Jacksonville in July humidity is 71%. With an average temperature of 29°C (85°F), this humidity feels like walking through a warm, damp blanket, making travel uncomfortable and sticky, and often leading to a desire for frequent breaks in shaded or air-conditioned spots.

July Average Humidity in Jacksonville

This chart illustrates the average monthly humidity levels in Jacksonville, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Jacksonville is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%80%78%79%81%77%71%67%69%73%82%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Jacksonville

In Jacksonville in July, 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 Jacksonville.

Maximum UV Index Levels in Jacksonville for July

The chart shows the monthly maximum UV Index (UVI) for Jacksonville in July, 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 July, the maximum UV index in Jacksonville typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111121110864
Data source: Jacksonville July 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 July Weather in Jacksonville Compares to Other Months

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

This table compares monthly weather conditions in Jacksonville, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (49°F)109 mm (4.3 inches)79%moderate
February Weather11°C (52°F)140 mm (5.5 inches)80%high
March Weather16°C (62°F)119 mm (4.7 inches)78%very high
April Weather19°C (66°F)132 mm (5.2 inches)79%very high
May Weather24°C (75°F)148 mm (5.8 inches)81%extreme
June Weather27°C (81°F)100 mm (4.0 inches)77%extreme
July Weather29°C (85°F)79 mm (3.1 inches)71%extreme
August Weather29°C (85°F)79 mm (3.1 inches)67%extreme
September Weather26°C (80°F)85 mm (3.3 inches)69%very high
October Weather21°C (70°F)111 mm (4.4 inches)73%very high
November Weather14°C (58°F)65 mm (2.5 inches)82%high
December Weather12°C (54°F)115 mm (4.5 inches)87%moderate

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