Fernandina Beach Weather in September
Fernandina Beach in September averages 30°C (86°F) during the day and 23°C (73°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Fernandina Beach in September
You can typically expect 14 days of rain this month, averaging around 139 mm (5.5 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Fernandina Beach in September
September in Fernandina Beach sees highs of 30°C (86°F) and lows of 23°C (73°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are mild at around 23°C (73°F), which is comfortable for most people.
Sunshine in Fernandina Beach in September
Expect a lot of sunshine this month, with about 231 hours of sun. These sunny conditions add to the overall experience.If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Fernandina Beach. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fernandina Beach's climate page.
Fernandina Beach Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
30°C (86°F)
Chance of Rain
47%
Precipitation
139 mm (5.5 in)
Rainy days
14 days
Humidity
81% *
Sunshine
231 hours *
Percentage Sunshine
62% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Fernandina Beach typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows typically ranging from 21°C (70°F) to 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Fernandina Beach in September
Browse day-by-day weather records for Fernandina Beach spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Fernandina Beach historical weather extremes in September
According to our 49 years of weather records for Fernandina Beach, the following extremes were recorded between 1976 and 2025.
- On September 5, 1999, temperatures climbed to 36°C (97°F), marking the warmest September day on record.
- Fernandina Beach experienced its chilliest September day on September 29, 2022, reaching only 22°C (72°F).
- The lowest overnight temperature recorded in September was 10°C (50°F) (September 19, 1981).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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What to Wear in Fernandina Beach in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Fernandina Beach in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Fernandina Beach's climate page.
Temperature Rainfall Sunshine Humidity
See the full Fernandina Beach climate overview or explore weather in the United States of America.
