Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 18 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 2AM (local time) - 2.5ft (0.8m), 4s period, SSE swell with 21 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 0.8m 4s and forecast to arrive on Sunday (Aug 23) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Tuesday (Aug 18) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 23rd Aug) | 2.5ft (0.8m) 4s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you – the next couple of weeks are looking pretty grim for a proper paddle. We’ve got a long stretch of flatness and junk on the way. I’ve gotta call it like I see it.
The first real chance at anything surfable shows up on Thursday, August 27th at Jupiter Inlet South Jetty. Before that? Nada. It’s a big gap of almost 10 days with no real recommendations. The water temp is sitting right around 86.5°, which is about average for this time of year, nothing wild there.
On that Thursday morning the 27th, we finally see a tiny bump of groundswell. The swell is coming from the ESE at 1 ft, but get this – the period is a long 12 seconds. That’s genuine groundswell energy. The combined energy is still pretty weak at (77), so it’s not gonna be packing any punch. The real kicker here is the wind. We’ve got a glassy morning with a light NNE breeze. For a jetty break, that’s about as clean as it gets. The swell is tiny, but for an advanced crew on a longboard or a fish, it might be worth a dawny. The break itself is fairly consistent, so you won’t be waiting forever between sets, though crowds are often a factor here. The swell direction (ESE) isn’t a perfect match for the break’s optimum (NE), so it’ll be a bit weak on the sandbar, but that clean face will make up for it.
Honestly, that Thursday morning is the only standout in the whole 16-day window. Everything else is either flat, onshore junk, or too small to bother with. After that morning, we’re back to poor conditions. The rest of the second week shows a few little bumps, but the wind swings around onshore and chops it all up. The 2.5 ft stuff on the 26th has a short, weak period of 5 seconds and onshore wind – that’s more of a kite-surfing setup than a paddle session.
So, keep your expectations low. That Thursday the 27th is your best (and really only) shot. Set the alarm, hope the forecast holds, and be ready to work for those little nuggets.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu afternoon. Warm (max 32°C on Tue afternoon, min 27°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Fri night. Warm (max 31°C on Fri afternoon, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | ESE 8 | ESE 11 | ESE 10 | ESE 10 | ESE 9 | ENE 9 | E 9 | E 8 | SSE 3 | S 4 | ENE 8 | ENE 8 | S 4 | ENE 9 | ENE 8 | SSE 4 | SE 4 | SE 5 | SSE 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 7 | 11 | 10 | 9 | 8 | 8 | 6 | 5 | 4 | 11 | 6 | 6 | 14 | 7 | 7 | 21 | 12 | 14 | 13 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross | off | cross-off | cross-on | cross-off | glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | off | on | cross-off |
High Tide | 00:50AM0.83m | 1:27PM0.81m | 1:33AM0.78m | 2:16PM0.77m | 2:21AM0.74m | 3:09PM0.73m | 3:14AM0.71m | 4:09PM0.71m | 4:13AM0.69m | 5:11PM0.71m | 5:14AM0.70m | 6:09PM0.74m | |||||||
Low Tide | 6:57AM0.07m | 7:23PM0.24m | 7:48AM0.14m | 8:16PM0.31m | 8:43AM0.19m | 9:13PM0.35m | 9:41AM0.23m | 10:12PM0.37m | 10:38AM0.23m | 11:08PM0.37m | 11:31AM0.21m | 00:00AM0.35m | |||||||
 |  |  | | | |  | |  | | | |  | | | | | | | |
 | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | 7:54 | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — |
mm | — | — | — | — | — | — | 1 | — | 5 | 4 | — | 4 | 5 | — | — | 4 | — | — | 2 |
Temp °C | 31 | 30 | 32 | 31 | 30 | 31 | 31 | 30 | 31 | 30 | 30 | 31 | 29 | 29 | 30 | 26 | 28 | 30 | 29 |
Feels °C | 34 | 32 | 34 | 35 | 34 | 34 | 33 | 34 | 34 | 30 | 33 | 34 | 30 | 33 | 30 | 26 | 30 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | S 4 | SSE 4 | ESE 10 | S 3 | ENE 6 | ENE 6 | ENE 6 | E 8 | E 8 | ENE 8 | SSE 4 | ENE 8 | E 8 | SSE 4 | ENE 8 | ENE 8 | SE 4 | ENE 8 | ENE 8 |
| kJ | 7 | 1 | 10 | 2 | 4 | 3 | 3 | 5 | 1 | 6 | 5 | 6 | 5 | 2 | 7 | 7 | 12 | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 11 | E 10 | ESE 10 | N 4 | ENE 9 | E 9 | NE 6 | NE 6 | E 8 | ENE 8 | E 8 | NE 7 | ENE 9 | E 8 | E 8 | ENE 8 | E 8 | E 7 |
| kJ | 7 | 11 | 8 | 9 | 1 | 8 | 6 | 1 | 1 | 1 | 6 | 1 | 2 | 7 | 1 | 1 | 6 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | — | E 10 | ESE 9 | SE 9 | E 9 | — | E 8 | E 5 | E 8 | E 8 | E 9 | NE 6 | E 13 | E 13 | E 8 | E 12 | E 12 |
| kJ | 1 | 1 | — | 8 | 8 | 3 | 1 | — | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 1 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | S 4 | — | — | SSW 3 | NNW 4 | — | S 3 | SSE 3 | SSE 3 | S 4 | WSW 2 | SSE 4 | S 4 | — | SE 3 | SSE 4 | — | SE 5 | SSE 4 |
| kJ | 6 | — | — | 2 | 3 | — | 1 | 1 | 4 | 11 | 1 | 2 | 14 | — | 2 | 21 | — | 14 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 292 | 292 | 238 | 311 | 238 | 311 | 312 | 406 | 1058 | 399 | 113 | 312 | 1453 | 715 | 797 | 256 | 112 | 29 | 653 |
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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