Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 17 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 11PM (local time) - 2.5ft (0.8m), 4s period, SSE swell with 24 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 Thursday (Aug 20) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s 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 | 11PM (Thu 20th Aug) | 2.5ft (0.8m) 4s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.
Honestly, I gotta be straight with you – it’s a tough stretch ahead. We’re looking at a long, long gap with barely a ripple to get excited about. For the next 11 days, from Monday the 17th right through to Thursday the 28th of August, the surf is mostly flat or junk. The swell heights barely tickle 2 ft, and the periods are short or just meh. The combined energy is weak, mostly in the single or low double digits (6 to 55), so don’t expect any push. Wind is often cross-onshore or onshore, keeping things bumpy and chopped up. Even when it does go glassy or light offshore, there’s just no swell to work with. It’s a proper drought.
Then we finally see a little pulse of life around Saturday the 29th of August. The morning at Jupiter Inlet South Jetty (advanced spot, fairly consistent) shows a small NNE swell coming in at about 2 ft, with a period of 8 seconds and clean conditions thanks to a light offshore wind from the west. The water temperature is sitting at 87°, which is about normal for this time of year. The combined energy bumps up to 97 – weak but at least it’s something. It’s surfable, but very ordinary. Not gonna lie, it’s not a standout day – it’s just the best of a bad bunch. The afternoon gets messy with cross-onshore winds again.
Sunday the 30th of August morning is a repeat: about 3 ft from the NNE, 8 seconds, clean, combined energy at 100. Again, just barely surfable. After that, it dribbles back down into tiny, weak, choppy conditions through the start of September.
So what’s the pick? If you’re desperate for a paddle, the Saturday 29th and Sunday 30th mornings are your only real chances. It’s small, it’s slow, but it’s clean. For this spot, a blank run of nearly two weeks isn’t totally out of the ordinary – but it stings. Keep an eye on the forecasts, because it tends not to stay this poor forever.
Stay hopeful.
– Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 32°C on Mon afternoon, min 27°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu night. Warm (max 31°C on Thu afternoon, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | SE 8 | ESE 8 | ESE 8 | ESE 11 | ESE 10 | ESE 10 | ENE 6 | ENE 9 | E 9 | E 8 | ENE 8 | S 4 | ENE 8 | ENE 8 | SSE 4 | ENE 10 | ENE 10 | SSE 4 | SE 4 | SE 4 | S 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 6 | 7 | 11 | 10 | 9 | 4 | 8 | 6 | 5 | 7 | 22 | 6 | 6 | 15 | 9 | 9 | 10 | 8 | 14 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | off | cross-off | cross-on | cross-off | cross-off | cross-on | cross | off | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | glassy | cross-on | cross-off |
High Tide | 12:41PM0.87m | 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 | 6:33PM0.17m | 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 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 7:54 | — | — | 7:54 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:50 | — |
mm | — | — | — | — | — | 1 | — | — | 1 | — | 1 | 6 | — | — | — | — | — | 2 | 1 | 4 | 4 |
Temp °C | 30 | 32 | 30 | 30 | 32 | 32 | 29 | 31 | 30 | 30 | 31 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 33 | 36 | 32 | 33 | 36 | 34 | 33 | 34 | 32 | 33 | 35 | 31 | 32 | 31 | 29 | 32 | 32 | 30 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SSE 3 | ESE 8 | SSE 4 | ESE 11 | ESE 10 | S 3 | N 4 | ENE 6 | NE 6 | SSE 3 | ENE 8 | ENE 8 | SSE 4 | ENE 8 | ENE 8 | SSE 4 | ENE 10 | ENE 9 | SE 4 | ENE 8 | ESE 4 |
| kJ | 2 | 6 | 4 | 11 | 10 | 4 | 1 | 4 | 1 | 1 | 7 | 6 | 2 | 6 | 7 | 2 | 9 | 8 | 4 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SE 8 | E 8 | ESE 8 | SSE 3 | E 10 | ESE 10 | ENE 6 | ENE 9 | E 9 | E 8 | E 8 | E 8 | ENE 8 | E 8 | NE 7 | ESE 4 | E 8 | E 8 | ENE 8 | E 8 | ENE 8 |
| kJ | 2 | 1 | 7 | 1 | 8 | 9 | 4 | 8 | 6 | 5 | 1 | 1 | 6 | 1 | 2 | 1 | 1 | 1 | 7 | 1 | 6 |
Swell 3 Height (m) Direction Period (s) | — | NE 9 | E 8 | E 8 | N 4 | ENE 10 | S 4 | SE 9 | E 9 | NE 6 | NE 6 | E 5 | E 8 | — | E 9 | ENE 10 | E 13 | E 13 | E 8 | E 12 | E 8 |
| kJ | — | 3 | 1 | 1 | 1 | 9 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | — | 2 | 9 | 3 | 3 | 1 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | — | SE 2 | S 3 | WNW 2 | — | SSW 3 | — | — | SSE 3 | — | SE 3 | S 4 | S 4 | SE 3 | SSE 4 | — | SE 4 | SSE 4 | SE 4 | SE 4 | S 4 |
| kJ | — | 1 | 6 | 1 | — | 3 | — | — | 2 | — | 5 | 22 | 4 | 2 | 15 | — | 4 | 10 | 8 | 14 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 292 | 292 | 238 | 137 | 238 | 312 | 312 | 399 | 399 | 312 | 857 | 381 | 252 | 113 | 292 | 133 | 134 | 327 | 301 | 106 |
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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