Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 15 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 2PM (local time) - 6ft (1.8m), 8s period, NE swell with 393 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 1.8m 8s and forecast to arrive on Thursday (Sep 17) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Monday (Sep 21) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Thu 17th Sep) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Right then, let's have a look at the 16-day picture for Jupiter Inlet South Jetty. Honestly, it's a rough stretch. There's no real start to the swell; we kick off with dribble and it just doesn't get going. The whole outlook is plagued by persistent storm risks and winds that are mostly cross-onshore, which is a real shame for a spot that can be fun. You're looking at a solid few weeks of small, messy conditions.
Tuesday morning (15th September) is barely a whisper with 0.7 ft of weak, 8-second ENE windswell. The combined energy is a paltry 12, and a light cross-onshore breeze won't help. The water temp is 87°, which is a touch warmer than normal for this time of year, if you're bothered about that. It’s a write-off.
We see a tiny pulse mid-week. By Wednesday morning the 16th, the swell bumps to 3 ft from the NE, but with a short 5-second period and a cross-onshore wind at 12 mph, it's a choppy mess (energy 64). Thursday the 17th sees the biggest swell of the whole window – 5 ft from the NE, but again, short period and messy winds. The energy hits 314, which is moderate, but the cross-onshore and storm risk will have it lumpy as anything. This is expert territory in size, but conditions will be poor.
There’s a slight break in the wind on Friday morning the 18th, with the swell dropping to 4 ft and a light cross-onshore breeze, but it's still got that storm risk lingering. The energy is decent at 141.
Honestly, there's not a single standout session in this forecast. The only moments that might be passable are the Tuesday 22nd and Wednesday 23rd mornings. On Tuesday the 22nd, we get a glassy morning with a light SW wind and a mere 2 ft of ENE swell (energy 38). Wednesday the 23rd is also glassy in the morning with just 1 ft (energy 20). These are tiny, clean days for a longboard or a foiler, but for anyone wanting a proper wave, it's not happening.
The rest of the window is dominated by wind and tiny swells. Late in the month, around the 29th and 30th September, we see a long-period (12-second) swell, but it's only 1 ft to 3 ft and blown out by onshore winds. A longer period on such a small wave at a beach/jetty won't deliver much.
Given the persistent small, weak swell (energy values rarely climbing out of the double or low triple digits) and the constant cross-onshore chop, this stretch looks more interesting for kite surfing than paddle surfing if you're desperate for a session.
Keep an eye on the charts, but this one's looking like a blank run for the next fortnight. The setup for Jupiter Inlet South Jetty during this period is just not on.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 26°C on Thu night). Winds increasing (light winds from the ESE on Tue morning, fresh winds from the ENE by Wed night). | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Fri morning. Warm (max 29°C on Fri morning, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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) | ENE 8 | ENE 10 | ENE 10 | NE 5 | NNE 7 | NE 7 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | ESE 4 | NE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 9 | 9 | 52 | 193 | 240 | 306 | 308 | 173 | 131 | 94 | 64 | 49 | 32 | 25 | 23 | 17 | 8 | 7 | 5 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross |
High Tide | 12:05PM0.93m | 00:11AM0.87m | 12:47PM0.87m | 00:53AM0.83m | 1:33PM0.83m | 1:40AM0.79m | 2:26PM0.79m | 2:33AM0.77m | 3:26PM0.77m | 3:34AM0.75m | 4:28PM0.78m | 4:38AM0.77m | 5:27PM0.81m | ||||||||
Low Tide | 5:54PM0.30m | 6:13AM0.21m | 6:40PM0.37m | 7:01AM0.28m | 7:30PM0.43m | 7:57AM0.34m | 8:29PM0.48m | 8:58AM0.37m | 9:34PM0.49m | 10:00AM0.37m | 10:35PM0.48m | 10:55AM0.35m | 11:28PM0.43m | ||||||||
 |  |  | | |  | | | | | | | | | |  | | | | | | |
 | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — |
 | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — | — | 7:21 | — | — | 7:20 | — | — | 7:19 | — | — | 7:17 | — |
mm | — | 2 | 6 | 3 | 3 | 7 | 5 | 3 | 2 | 9 | 3 | 1 | 2 | 3 | 6 | — | 2 | 3 | 20 | 7 | 13 |
Temp °C | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 26 | 26 | 27 |
Feels °C | 32 | 31 | 31 | 30 | 29 | 28 | 28 | 29 | 30 | 32 | 32 | 31 | 31 | 30 | 29 | 30 | 29 | 28 | 27 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | SSE 3 | ENE 10 | ENE 9 | SE 4 | E 13 | E 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | SSE 4 | SE 4 | SSE 5 |
| kJ | 6 | 1 | 9 | 8 | 3 | 4 | 2 | 308 | 173 | 131 | 94 | 64 | 49 | 32 | 25 | 23 | 17 | 7 | 7 | 5 | 2 |
Swell 2 Height (m) Direction Period (s) | NE 10 | ENE 10 | — | E 9 | E 9 | — | E 13 | E 9 | E 9 | E 12 | E 12 | E 8 | E 7 | E 7 | SSE 5 | S 4 | SSE 4 | ENE 8 | NE 7 | NE 6 | ENE 7 |
| kJ | 4 | 9 | — | 2 | 1 | — | 3 | 2 | 1 | 3 | 3 | 1 | 1 | 1 | 4 | 1 | 1 | 6 | 7 | 2 | 5 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 9 | E 9 | E 9 | E 9 | — | E 13 | E 13 | — | E 12 | E 12 | E 12 | — | E 7 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 7 | NE 6 |
| kJ | 1 | 1 | 2 | 2 | 2 | — | 3 | 3 | — | 3 | 3 | 3 | — | 1 | 1 | 1 | 1 | 1 | 6 | 5 | 1 |
Wind waves Height (m) Direction Period (s) | SSE 3 | — | E 3 | NE 5 | NNE 7 | NE 7 | NE 8 | — | SE 4 | SE 4 | SE 4 | ESE 4 | SE 4 | SE 4 | ESE 4 | SE 4 | ESE 4 | ESE 4 | ENE 3 | ENE 3 | — |
| kJ | 1 | — | 5 | 52 | 193 | 240 | 306 | — | 4 | 4 | 3 | 8 | 11 | 7 | 5 | 2 | 1 | 8 | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 981 | 1596 | 920 | 1052 | 1590 | 718 | 718 | 366 | 1068 | 116 | 20 | 857 | 238 | 381 | 327 | 381 | 311 | 238 | 981 | 1746 | 1240 |
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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