Fernandina Beach Weather Forecast
- 74
- 89
Thunderstorms Likely
- 74
- 88
Rain Showers Likely
- 75
- 88
Rain Showers Likely
- 75
- 89
Rain Showers Likely
- 76
- 87
Rain Showers Likely
- 76
- 87
Chance Thunderstorms
Today 25 Aug Coastal Nassau
Partly sunny with a chance of Showers with a slight chance of Thunderstorms in the Morning, then mostly cloudy with Showers and Thunderstorms likely in the afternoon. Some Thunderstorms may produce gusty Winds and heavy rainfall in the afternoon. Highs in the lower 90s. Temperature falling into the mid 80s in the afternoon. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent. Heat index Values up to 105.
Tonight 25 Aug Coastal Nassau
Partly cloudy. Lows in the mid 70s. Southwest Winds around 5 Mph.
Fernandina Beach Temperature Statistics
August Temperature
Fernandina Beach Municipal Airport (3.7 miles)
Lowest 8 August, 2026
73.4 °FAverage August
82.1 °FHighest 17 August, 2026
98.6 °F
Climate (2021–2026)
Fernandina Beach Municipal Airport (3.7 miles)
Average Low 2021–2026
62.7 °FAverage 2021–2026
70.1 °FAverage High 2021–2026
78.3 °F