Amelia Island water temperature in November
Key facts
The Atlantic off Amelia Island averages 70.4°F in November — comfortable. Swimmable for most people without any neoprene. That is 2.2°F below the island’s annual average of 72.6°F, and 5.6°F down from October.
- Average daily high to low
- Ocean temperature
November in the water
November is where the sea starts to feel like work. It drops several degrees over the month and passes out of comfortable somewhere in the middle. Right whale calving season opens off this coast in mid-November, which is a better reason to be on the beach than swimming is.
At 70.4°F the sea is 2.2°F below the island’s annual average of 72.6°F. The air reaches 72.4°F in November, a gap of 2°F, small enough that the ocean gives you no relief from the heat.
What to wear
A spring suit or a top is plenty. Swimmers manage without, but not for long.
Where this number comes from
70.4°F is the mean of every hourly reading for November across 2023, 2024 and 2025 at NOAA CO-OPS station 8720218, Mayport (Bar Pilots Dock), FL — about 30 km south of the island. The Fernandina Beach station on the island has no water-temperature sensor, so no on-island long record exists to average. We would rather say that plainly than publish an on-island figure we cannot support.
A monthly mean is not a forecast. The real ocean in any given November week moves several degrees around this figure, and a hard south-westerly can pull colder water up onto the shelf in a day. For the reading right now, the offshore waverider buoy 41112 (Offshore Fernandina Beach, FL, 17 km ENE) reports water temperature alongside wave height — that is what feeds our surf report and beach conditions.
November against the months either side
| October | November | December | |
|---|---|---|---|
| Sea temperature | 76°F | 70.4°F | 62°F |
| Our reading | Warm | Comfortable | Brisk |
| Air high | 80.1°F | 72.4°F | 66.3°F |
The annual mean is 72.6°F, and the sea lags the air by about two months in both directions — see water temperature by month for why that lag matters more than the raw number.
Next and previous months
Planning a November beach day
Part of Amelia Island water temperature by month.
Frequently asked questions
- What is the water temperature at Amelia Island in November?
- The ocean averages 70.4°F (21.3°C) in November, from three years of hourly NOAA readings at the nearest sensor with a long record — station 8720218, 30 km south of the island. A given week moves several degrees around that.
- Can you swim at Amelia Island in November?
- Comfortable at 70.4°F. Swimmable for most people without any neoprene.
- Do you need a wetsuit at Amelia Island in November?
- A spring suit or a top is plenty. Swimmers manage without, but not for long.