Water temperature · Florida
Fernandina Beach water temperature
72°F22°C
No reading from the sensor in the last 12 hours: see the satellite reading.
Read Oct 30, 11:26 AM EDT at Offshore Fernandina Beach, FL (132), 11 mi E
The sea is 4°F cooler than usual for late October.
- Comfortable for most swimmers
The last 35 days
Daily satellite sea-surface temperature (NASA MUR, 1 km) at the nearest ocean point, 1.9 mi from town. Satellites read the top millimeter of water; a sensor a few feet down can differ by a degree or two.
Fernandina Beach water temperature by month
Warmest in August (84°F on average), coolest in January (58°F). The water averages 75°F or more from May to October.
Bars: the 2016–2025 average of each month (outlined: this month). Lines: the coolest and warmest year’s monthly average.
Month-by-month numbers and what to wear
| Month | Average | In the water |
|---|---|---|
| January | 58°F 14°C | Very cold: a 4/3 mm wetsuit and booties |
| February | 59°F 15°C | Cold: a 3/2 mm full wetsuit |
| March | 63°F 17°C | Cold: a 3/2 mm full wetsuit |
| April | 69°F 20°C | Cool: a 2 mm shorty or spring suit |
| May | 76°F 24°C | Comfortable for most swimmers |
| June | 81°F 27°C | Warm: a swimsuit is plenty |
| July | 83°F 29°C | Warm: a swimsuit is plenty |
| August | 84°F 29°C | Warm: a swimsuit is plenty |
| September | 82°F 28°C | Warm: a swimsuit is plenty |
| October | 77°F 25°C | Comfortable for most swimmers |
| November | 69°F 20°C | Cool: a 2 mm shorty or spring suit |
| December | 61°F 16°C | Cold: a 3/2 mm full wetsuit |
Tides at Fernandina Beach
Low tide leaves more beach; the water near shore warms fastest on a sunny incoming tide over the flats.
Questions
What is the water temperature in Fernandina Beach today?
The nearest sensor, Offshore Fernandina Beach, FL (132) (11 mi away), read 72°F at Oct 30, 11:26 AM EDT. This page updates every hour.
Is the water warmer or colder than usual?
The satellite reading on Oct 28 was 69°F, 4°F cooler than usual for late October (73°F is the 2016–2025 average for the date).
When is the water warmest in Fernandina Beach?
August, at about 84°F on average (2016–2025).
Is the water warm enough to swim in October?
The October average is 77°F: comfortable for most swimmers.
Where the readings come from
The live reading is from Offshore Fernandina Beach, FL (132) (NOAA NDBC buoy 41112), 11 mi E of Fernandina Beach, checked every hour. The daily and monthly figures are NASA JPL’s Multi-scale Ultra-high Resolution (MUR) sea-surface temperature, a 1 km satellite analysis, read through NOAA CoastWatch. All sources