Fernandina Beach Weather in September

What's the weather like in Fernandina Beach (Florida) in September 2025?

The climate in Fernandina Beach during September can be summarized as hot, humid and wet.

September is in the fall / autumn in Fernandina Beach and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 30°C (85°F), whilst at night 22°C (71°F) is normal.

Fernandina Beach weather averages (imperial / metric)
Daytime temperature 29.7°C 85.4°F
Nightly temperature 21.8°C 71.2°F
Average temperature 25.7°C 78.3°F
Daily sunshine 8 hrs
Avg rainfall 175 mm 6.9 ins
Rainy days 12 days
Sea temperature 27.8°C 82.1°F
Humidity 80%
Windspeed 11.9kph 7 mph

On average September is the wettest month of the year in Fernandina Beach with around 175mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 8 hours of sunshine per day.

September temperatures in Fernandina Beach

Fernandina Beach average temperature in September

September rainfall

Fernandina Beach average rain in September

September hourly sunshine

Fernandina Beach average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Fernandina Beach in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Fernandina Beach weather stats

Fernandina Beach weather statistics
Hottest month: July 31.9°C 89.4°F
Driest month: April 68mm 2.7ins
Sunniest month: April 10hrs
Coldest month: January 16.4°C 61.5°F
Wettest month: September 175mm 6.9ins
Map showing location of Fernandina Beach (30.66968, -81.46259) Fernandina Beach map pin © Google

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