Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 20 Aug 2026:
- Most powerful swell: Friday 21 Aug, 8AM (local time) - 2ft (0.6m), 4s period, S swell with 10 kJ wave energy.
Best Forecast Surf Conditions for Jupiter Inlet South Jetty this week:
The most powerful waves expected at Jupiter Inlet South Jetty in the next 16 days are 0.6m 4s and forecast to arrive on Friday (Aug 21) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Aug 26) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Fri 21st Aug) | 2ft (0.6m) 4s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright, let’s get real about the local surf. The short version is: it’s flat. No good waves in the 16-day outlook, and the only place we’re looking at is the Jupiter Inlet South Jetty. It’s an advanced, fairly consistent beach and jetty break that’s not too picky, but there’s just nothing coming in. The water’s about 86°F, which is a little warmer than average for this time of year, but nothing crazy.
From Thursday, August 20th, all the way through to the end of the month, every single session is a dud. Swell heights are tiny, mostly 0.3ft to 2ft, and the combined wave energy is weak—like 7 (energy) or 14 (energy). The wind does give us a few glassy moments, like Thursday morning with a light S wind of 3 mph, or Friday morning with a clean cross-offshore SSW breeze at 6 mph. But even with clean water, there’s no swell to ride. The jetty likes a north-east swell best, but we’re stuck with small east and south-east swells with periods of 4 to 8 seconds—no power, no push.
The second week is the same story. From August 27th through September 4th, it’s more tiny waves, poor conditions, and winds that are mostly cross-onshore or onshore, chopping up the water. There’s one moment on Friday morning, September 4th, with a light offshore W wind at 3 mph and a small NNE swell of 1ft, but the period is only 7 seconds and the energy is still weak at 24 (energy). Clean, but not surfable.
So, the honest truth is there’s nothing to surf in this 16-day window. The Jupiter Inlet South Jetty is a consistent spot, so it’s a real shame to see it this flat. But when the swell is this low, you just gotta wait for the next system to roll in. Sometimes the ocean just shuts down for a while.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Fri afternoon. Warm (max 31°C on Fri afternoon, min 26°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sun night. Warm (max 30°C on Sun afternoon, min 27°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | ENE 8 | S 4 | ENE 8 | S 4 | ENE 9 | ENE 8 | SSE 4 | ENE 8 | ENE 8 | SE 4 | ENE 8 | ENE 8 | SE 4 | SE 4 | SE 4 | SE 3 | ESE 4 | ESE 4 | SE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 1 | 6 | 10 | 6 | 9 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 3 | 3 | 3 | 3 | 3 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-off | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 3:09PM0.73m | 3:14AM0.71m | 4:09PM0.71m | 4:13AM0.69m | 5:11PM0.71m | 5:14AM0.70m | 6:09PM0.74m | 6:11AM0.73m | 6:59PM0.78m | 7:02AM0.76m | 7:43PM0.83m | 7:49AM0.80m | 8:23PM0.86m | ||||||||
Low Tide | 8:43AM0.19m | 9:13PM0.35m | 9:41AM0.23m | 10:12PM0.37m | 10:38AM0.23m | 11:08PM0.37m | 11:31AM0.21m | 00:00AM0.35m | 12:19PM0.18m | 00:47AM0.31m | 1:02PM0.15m | 1:29AM0.26m | 1:43PM0.12m | 2:07AM0.20m | |||||||
 | |  | | | |  | | |  | | | | |  | | | | |  |  | |
 | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:46 | — |
mm | 1 | 2 | 3 | 3 | 3 | 6 | — | 3 | 5 | — | 2 | 3 | — | — | — | — | — | — | — | 1 | 2 |
Temp °C | 30 | 30 | 30 | 30 | 31 | 30 | 29 | 30 | 29 | 29 | 30 | 28 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 29 | 29 |
Feels °C | 35 | 33 | 33 | 33 | 34 | 32 | 33 | 33 | 30 | 33 | 33 | 30 | 33 | 31 | 31 | 32 | 31 | 32 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 3 | ENE 8 | ENE 8 | ESE 4 | ENE 8 | ENE 8 | S 4 | ENE 8 | E 8 | SSE 4 | NE 8 | NE 7 | SSE 4 | SSE 4 | E 7 |
| kJ | 5 | 1 | 6 | 6 | 6 | 7 | 1 | 7 | 7 | 1 | 7 | 6 | 1 | 6 | 1 | 2 | 2 | 2 | 6 | 3 | 1 |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | E 8 | E 8 | E 8 | E 6 | ESE 4 | E 8 | E 8 | ENE 8 | E 8 | E 7 | ENE 8 | E 9 | NE 8 | E 8 | — | E 8 | ESE 4 | E 7 | E 10 |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 7 | 1 | 1 | 6 | 1 | 2 | 1 | — | 1 | 3 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | NE 5 | — | NE 7 | E 9 | ENE 9 | E 13 | E 13 | S 3 | E 12 | E 12 | E 9 | E 11 | E 8 | NE 7 | E 8 | E 11 | NE 7 | E 10 | E 16 |
| kJ | 1 | 1 | 1 | — | 2 | 2 | 7 | 3 | 3 | 1 | 3 | 3 | 2 | 3 | 1 | 2 | 1 | 2 | 2 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | — | ESE 2 | SSE 3 | S 4 | SSE 3 | S 4 | — | SE 4 | SSE 4 | — | SE 4 | SE 4 | ESE 3 | SE 4 | SE 4 | SE 4 | SE 4 | SE 3 | — | ESE 4 | SE 4 |
| kJ | — | 1 | 4 | 10 | 5 | 9 | — | 2 | 7 | — | 5 | 7 | 1 | 4 | 5 | 3 | 3 | 3 | — | 3 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 381 | 312 | 857 | 381 | 857 | 566 | 1089 | 261 | 327 | 638 | 638 | 273 | 867 | 857 | 238 | 327 | 486 | 327 | 328 | 1590 | 715 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Jupiter Inlet South Jetty Surf forecast
The above surf forecast table for Jupiter Inlet South Jetty provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jupiter Inlet South Jetty can be found by selecting the local surf guide option on the grey menu. Our Jupiter Inlet South Jetty surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jupiter Inlet South Jetty) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jupiter Inlet South Jetty may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jupiter Inlet South Jetty is 3 km (2 miles) from Jupiter. If you plan a vacation in South Florida, look for hotels and other accommodation in Jupiter. Jupiter has rooms for a wide range of budgets as well as car hire and transport links.
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