Jacksonville, Florida Weather in September

United States · September climate averages and travel tips

Avg high31°C (87°F)
Avg low22°C (71°F)
Rainfall135 mm (5.3 in)
RatingPoor 3.5/10

In September, Jacksonville has average highs of 31°C (87°F) and lows of 22°C (71°F). September is autumn (fall) in United States. The month is wet, with about 135 mm (5.3 in) of rain spread over 16 days. Humidity averages 81%, so it feels sticky and hotter than the thermometer suggests. You get roughly 12.2 hours of daylight and a mix of sun and cloud.

Is September a good time to visit Jacksonville?

September is not the best time to visit Jacksonville (3.5/10) mainly because of the rain. The weather is much better in February to March and November to December.

Visiting Jacksonville in September

September weather

Jacksonville stays hot in September, with highs around 31°C and sticky humidity. Rain falls on many days, often in heavy showers, and afternoon storms can interrupt outdoor plans. It's a little cooler and drier than August, but October is a more comfortable bet.

You can still enjoy Jacksonville Beach or stroll around Riverside and the Cummer Museum of Art and Gardens between showers. Avoid building a whole day around exposed walks or a long beach visit; cloud and rain can make the weather feel changeable. Hurricane season is still active, too.

Events and crowds

Labor Day brings a long weekend, and the Jacksonville Jaguars' regular-season games begin in September. Game days near EverBank Stadium add traffic and lively crowds, though the exact schedule varies each year.

If you hate crowds, September can feel calmer than the peak summer holiday period, once many families have returned to school. It's generally a shoulder-season month, so you may find better accommodation deals than during major event weekends or winter visits. But don't expect a quiet city when the Jaguars are playing at home.

Make the most of your visit

Travelling with kids? Keep the Jacksonville Zoo and Gardens as a flexible option for a stormy spell, rather than relying on a full day outdoors. The heat and frequent rain can make long visits tiring, so Riverside's cafés and the Cummer's indoor galleries offer useful pauses.

For a local outing, take the St. Johns River Ferry between Mayport and Fort George Island. It's a handy way to cross the river and reach the quieter side near Kingsley Plantation. Check ferry service before setting off, especially if storms are in the forecast.

September weather at a glance

Average high31°C (87°F)
Average low22°C (71°F)
Daily mean26°C (78°F)
Rainfall135 mm (5.3 in)
Rainy days (1 mm+)16
Humidity81%
Cloud cover58%
Daylight12.2 hours
Est. sunshine5.6 hours/day
Wind2.1 km/h
vs August2°C cooler than August, with 46 mm less rain.

What to pack for Jacksonville in September

Jacksonville weather in other months

Jan18°C / 6°C76 mmExcellentFeb20°C / 8°C80 mmExcellentMar24°C / 11°C77 mmExcellentApr27°C / 15°C84 mmExcellentMay31°C / 19°C96 mmGoodJun33°C / 22°C172 mmPoorJul33°C / 24°C166 mmPoorAug33°C / 24°C181 mmPoorSep31°C / 22°C135 mmPoorOct27°C / 17°C82 mmGoodNov23°C / 11°C54 mmExcellentDec20°C / 9°C77 mmExcellent

← AugustBest time to visit JacksonvilleOctober →

Better weather in September nearby

Nearby in September

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