Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 5PM (local time) - 2ft (0.6m), 7s period, NE swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 8PM (local time) - 3.5ft (1.1m), 8s period, NE swell with 149 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 5PM (local time) - 2ft (0.6m), 7s period with NE swell.
Best Forecast Surf Conditions for Jupiter Inlet South Jetty this week:
The surf forecast for Jupiter Inlet South Jetty over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 10) at 5PM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.5m and 8s. Another secondary swell of 0.5m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Jupiter Inlet South Jetty in the next 16 days are 1.1m 8s and forecast to arrive on Wednesday (Sep 09) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Saturday (Sep 12) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Thu 10th Sep) | 2ft (0.6m) 7s |
| Best Surf | 5PM (Thu 10th Sep) | 2ft (0.6m) 7s |
| Most Powerful | 8PM (Wed 9th Sep) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for the Jupiter Inlet South Jetty area.
Alright, I’ve got to be straight with you – this outlook is a tough one. We’re looking at a long, dry spell before anything worth paddling out for shows up. The whole first week is basically a write-off. From Wednesday the 9th to Monday the 21st of September, the conditions are just flat or junky. We're talking tiny, weak swell with onshore winds or cross-offshore breezes that can't do a thing for these tiny waves. You'll see energy readings in the teens and low hundreds – just not enough push. There’s a brief moment on Thursday the 10th afternoon where the wind goes light cross-offshore from the SW, but with waves only about 2ft from the NE and a short period of 7 seconds, it’s barely surfable and very ordinary.
The gap with no real recommendations stretches for over a week and a half. It’s a proper blank run.
Now, things finally start to look a bit more interesting right at the back end of the forecast. On Tuesday the 22nd of September, we see a proper pulse of energy arrive. The combined swell energy jumps to 362 (moderate), with waves building to around 7ft from the ENE. The period is only 7 seconds, so it’s windswell, not groundswell. The wind is a cross-onshore from the SE at 16 mph, which will keep it choppy and raw. The rating calls this “poor surf conditions” though, so don’t expect magic.
The best chance in this whole 16-day window looks like Wednesday the 23rd and Thursday the 24th of September. The swell tops out around 8ft from the NE with a period of 9 seconds, and energy readings get up to 871 (moderate to strong). This is a solid, powerful swell. The caveat? The wind is still cross-onshore from the SE or SSE, coming in at 6-12 mph. It won't be glassy, but the lightest wind on Wednesday afternoon and Thursday morning (around 6 mph) might give you a window of cleaner, albeit still lumpy, conditions. This is a beach and jetty setup, and with the period staying under 10 seconds, it won't be as lined up as a longer period groundswell. This size, at over 7ft, is pushing past beginner territory and into intermediate and above only. It’s the only real stand-out, but it’s a distant one and pretty uncertain.
This is Rusty, signing off.
Short Range ForecastModerate rain (total 18mm), heaviest on Thu afternoon. Warm (max 30°C on Wed afternoon, min 28°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 30°C on Sat morning, min 28°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | NNE 7 | NNE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 10 | NE 9 | SE 4 | SE 4 | SE 4 | ESE 9 | ENE 9 | E 9 | ENE 8 | ENE 8 | E 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 41 | 123 | 132 | 138 | 84 | 37 | 38 | 21 | 14 | 13 | 11 | 9 | 7 | 7 | 8 | 6 | 7 | 7 | 11 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | cross-on | on |
High Tide | 7:36AM0.97m | 8:07PM1.00m | 8:28AM1.01m | 8:51PM1.01m | 9:15AM1.04m | 9:33PM1.01m | 10:00AM1.04m | 10:13PM0.99m | 10:42AM1.02m | 10:52PM0.96m | 11:24AM0.98m | 11:31PM0.92m | |||||||
Low Tide | 1:04AM0.14m | 1:28PM0.04m | 1:53AM0.07m | 2:17PM0.04m | 2:39AM0.02m | 3:02PM0.06m | 3:22AM0.01m | 3:46PM0.10m | 4:05AM0.02m | 4:29PM0.16m | 4:47AM0.06m | 5:11PM0.23m | |||||||
 |  |  |  | |  | | |  | |  | | | | |  | | | | |
 | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | 7:32 | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:27 | — | — | 7:25 | — |
mm | 5 | — | 1 | — | — | 8 | 3 | 1 | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 32 | 32 | 32 | 32 | 31 | 33 | 34 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 31 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 6 | ENE 6 | ENE 6 | ENE 6 | ESE 8 | SSE 4 | SSE 4 | SSE 5 | SSE 5 | ENE 8 | E 8 |
| kJ | 41 | 123 | 132 | 138 | 84 | 37 | 38 | 21 | 10 | 8 | 4 | 4 | 7 | 4 | 4 | 5 | 2 | 7 | 6 |
Swell 2 Height (m) Direction Period (s) | NE 10 | E 8 | E 9 | E 8 | E 8 | NE 8 | NE 8 | SE 4 | NE 10 | NE 9 | NE 9 | SE 9 | E 9 | ENE 8 | ENE 9 | E 9 | ENE 8 | E 8 | E 8 |
| kJ | 26 | 1 | 2 | 1 | 1 | 34 | 11 | 9 | 14 | 13 | 3 | 3 | 6 | 7 | 8 | 6 | 7 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 8 | — | — | — | — | E 8 | E 8 | NE 8 | SE 7 | SE 8 | SE 8 | NE 8 | NE 6 | ESE 9 | ESE 9 | SE 9 | SE 8 | — | E 11 |
| kJ | 1 | — | — | — | — | 1 | 1 | 11 | 2 | 2 | 3 | 3 | 1 | 7 | 8 | 3 | 3 | — | 2 |
Wind waves Height (m) Direction Period (s) | SSE 2 | ESE 3 | ESE 3 | ESE 4 | ESE 4 | SE 4 | SE 4 | SSE 4 | SE 4 | SE 4 | SE 4 | SE 4 | SE 4 | ESE 4 | ESE 4 | ESE 3 | ESE 3 | ESE 4 | E 4 |
| kJ | 1 | 1 | 2 | 7 | 12 | 9 | 6 | 7 | 4 | 8 | 11 | 9 | 7 | 5 | 3 | 2 | 2 | 4 | 11 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 718 | 718 | 718 | 366 | 397 | 0 | 48 | 112 | 364 | 328 | 857 | 1586 | 112 | 238 | 1018 | 238 | 203 | 1602 | 328 |
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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