Amelia Island in August
Key facts
August on Amelia Island averages 89.5°F by day and 74.9°F at night, with the ocean at 84.6°F — bath-warm. Expect 6.39″ of rain across about 9.7 wet days: near-daily afternoon thunderstorms rather than all-day rain.
- Average daily high to low
- Ocean temperature
- Rainfall, inches
What August actually feels like
August is July with more water in the air and a warmer sea. The ocean peaks this month, warm enough that it stops cooling you down at all. Afternoon storms are near-daily and often dramatic.
Turtle nests laid in May and June start hatching, and dawn walks in August are when you are most likely to see a track or a marked nest going out.
The ocean in August
At 84.6°F the water is 12.0°F above the island’s annual average of 72.6°F. No cooling effect at all — shade and water matter more than the sea. The air reaches 89.5°F, a gap of 4.9°F over the sea — small enough that the water gives you no relief from the heat at all. Ocean figures are means of hourly readings at the nearest NOAA sensor with a long record, 30 km south at Mayport — see ocean temperature by month.
Rain and storms
August averages 6.39″ across about 9.7 wet days, against 49.93″ for the year. That is near-daily afternoon thunderstorms rather than all-day rain. August falls inside the Atlantic hurricane season, which runs 1 June to 30 November with its statistical peak in early September. That is a season, not a forecast — see our hurricane season guide for what it actually means for a booking.
What to pack
- nothing warm at all — the evening stays in the seventies
- a light rain shell rather than an umbrella; the storms arrive with wind
- sun cover that works at midday: hat, shirt, and more water than you think
- swimwear you will actually use — the ocean is warm this month
- insect repellent for dusk near the marsh
If the weather does not co-operate
This is the month to book somewhere with a pool and shade, and to keep the afternoons flexible. The tide matters more than the forecast for a beach day — a high tide on a narrow access leaves very little sand — so check today's tides before you commit to a stretch of beach.
Crowds and cost
Still high early in the month, easing once schools go back. We do not publish rates: they move constantly and we will not quote a figure we have not verified.
August against the months either side
| July | August | September | |
|---|---|---|---|
| Average high | 90.7°F | 89.5°F | 86°F |
| Average low | 74.9°F | 74.9°F | 73.2°F |
| Ocean | 82.7°F | 84.6°F | 82.4°F |
| Rain | 4.96″ | 6.39″ | 7.19″ |
Next and previous months
Planning a August trip
Part of Amelia Island weather month by month.
Frequently asked questions
- How warm is Amelia Island in August?
- August averages a high of 89.5°F and a low of 74.9°F, for a daily mean of 82.2°F. Those are NOAA 1991–2020 normals for the station on the island itself, not the airport inland.
- Can you swim in the ocean at Amelia Island in August?
- The ocean averages 84.6°F in August — bath-warm. No cooling effect at all — shade and water matter more than the sea.
- Does it rain much in August?
- August averages 6.39″ across about 9.7 days receiving 0.10″ or more, out of 49.93″ for the year. Expect near-daily afternoon thunderstorms rather than all-day rain.
- Is August a risky month for hurricanes on Amelia Island?
- August falls inside the Atlantic hurricane season, 1 June to 30 November, with the statistical peak in early September. Risk in any single week is low, but it is not zero — take the refundable rate and follow the National Hurricane Center rather than a consumer forecast app.