Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 18 Jul 2026:
- Most powerful swell: Monday 20 Jul, 8PM (local time) - 3ft (0.9m), 4s period, SE swell with 27 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 0.9m 4s and forecast to arrive on Monday (Jul 20) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 5s period and expected on Thursday (Jul 23) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 20th Jul) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get the skinfeel out of the way first. The water is sitting right around 86°, which is about average for this time of year, so nothing freaky going on there.
Straight up, I gotta be honest with you – this 16-day window is a tough one for Jupiter Inlet South Jetty. We’re looking at a long stretch of flat to very small, weak surf. The wave energy is just anemic, with combined energy values barely cracking double digits most days (12, 17, 26, 29). You’re not gonna find any real push out there.
The first few days are a write-off. Saturday the 18th through Thursday the 24th offer nothing but knee-high slop. The swell is coming from the SSE and SE, but it’s short-period windswell of only 4 seconds, which is just junk. On top of that, the wind is mostly cross-onshore, making it choppy and messy.
We do get a little shift starting Friday the 25th morning. The swell direction swings to the ENE with a period of 8 seconds, and the combined energy bumps up to 42. Still small – only 1 ft – but it’s a slight improvement. The real highlight of the whole 16-day run is Sunday the 26th morning. The wind goes glassy, with a 3 mph SSW breeze. That’s the cleanest the surface will be, but the swell is still only 1 ft. It’s a session for a longboard or a foamie, just to get wet.
Then we get a couple of days on Monday the 27th and Tuesday the 28th where the wind turns offshore from the WSW, giving us clean, glassy conditions. The swell is tiny at 0.7 ft to 1.0 ft, but the surface will be smooth. The combined energy is still pitiful (12 to 14).
After that, we slide into more of the same tiny, onshore junk through the end of July and into August 2nd. The swell stays below 2 ft, mostly from the NE, with periods between 7 and 8 seconds. The combined energy maxes out at a weak 38.
Look, this is a beach and jetty setup, and with the swell being this small and weak, and the wind often messy, it’s honestly more of a kiteboarding or foil session than a paddle surf. There’s just no standout day here. The best bet is for the glassy Sunday the 26th morning if you just want to bob around, or the clean offshore days on the 27th and 28th for some micro-sessions. Otherwise, it’s a two-week wait for anything with any real interest.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sun morning. Warm (max 30°C on Sat afternoon, min 27°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Tue morning, min 28°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 4 | SSE 4 | SSE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SE 4 | SSE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SE 4 | SSE 4 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 10 | 12 | 20 | 20 | 24 | 11 | 23 | 24 | 19 | 14 | 13 | 12 | 15 | 8 | 5 | 5 | 6 | 6 | 12 | 13 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 12:24PM0.84m | 00:43AM0.84m | 1:15PM0.80m | 1:28AM0.79m | 2:07PM0.77m | 2:15AM0.74m | 3:00PM0.73m | 3:04AM0.70m | 3:56PM0.69m | 3:57AM0.67m | 4:53PM0.68m | 4:53AM0.65m | 5:50PM0.68m | ||||||||
Low Tide | 6:17PM-0.03m | 6:48AM-0.07m | 7:10PM0.05m | 7:40AM-0.03m | 8:05PM0.13m | 8:32AM0.01m | 9:00PM0.19m | 9:26AM0.05m | 9:55PM0.23m | 10:19AM0.08m | 10:49PM0.25m | 11:11AM0.09m | 11:41PM0.25m | ||||||||
 | |  |  |  |  | | | | | | | | | | | | | | | | |
 | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — |
 | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:14 | — | — | 8:13 | — | — | 8:13 | — | — | 8:13 | — |
mm | — | — | 3 | 6 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 30 | 30 | 30 |
Feels °C | 31 | 30 | 30 | 31 | 30 | 30 | 30 | 30 | 30 | 31 | 31 | 29 | 31 | 31 | 30 | 32 | 32 | 30 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | NE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | SE 8 | SSE 4 | SSE 4 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 5 | 5 | 5 | 2 | 7 | 7 | 7 | 6 | 6 | 6 | 5 | 4 | 4 | 1 | 3 | 4 | 2 | 6 | 6 | 12 | 13 |
Swell 2 Height (m) Direction Period (s) | NE 6 | E 8 | NE 9 | NE 9 | E 8 | E 7 | E 7 | E 8 | E 7 | E 7 | E 8 | SE 8 | SE 8 | SE 8 | E 8 | ESE 4 | E 8 | SE 8 | SE 8 | E 8 | E 8 |
| kJ | 1 | 1 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 1 | 2 | 5 | 2 | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 8 | E 7 | — | — | — | — | — | E 8 | — | — | — | — | E 8 | SE 8 | — | — | — | — |
| kJ | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | 1 | — | — | — | — | 5 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SSE 4 | SSE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SE 4 | SSE 4 | SE 4 | SE 4 | SSE 4 | SSE 4 | SE 4 | SSE 4 | — | ESE 4 | ESE 3 | SE 3 | SE 4 | SE 3 |
| kJ | 5 | 10 | 12 | 20 | 20 | 24 | 11 | 23 | 24 | 19 | 14 | 13 | 12 | 15 | 8 | — | 1 | 4 | 3 | 3 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 857 | 1764 | 273 | 857 | 857 | 273 | 273 | 395 | 328 | 327 | 857 | 273 | 256 | 392 | 327 | 238 | 327 | 273 | 112 | 292 | 61 |
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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