Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 1 Sep 2026:
- Most powerful swell: Thursday 3 Sep, 11PM (local time) - 3.5ft (1.1m), 5s period, E swell with 62 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 1.1m 5s and forecast to arrive on Thursday (Sep 03) at 11PM. 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 Saturday (Sep 05) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Thu 3rd Sep) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in feet and Fahrenheit.
Right now, it’s flat. Dead flat. You’re looking at a solid two-week gap with no real surf to speak of. The first bit of energy doesn’t show up until mid-September.
The only spot we’re watching is Jupiter Inlet South Jetty (Jupiter-Inlet-South-Jetty). It’s an advanced spot, a beach and jetty setup, and it’s fairly consistent. The water is 86°F, which is about 1°F warmer than normal for this time of year – no big deal, just a little summer warmth left.
For the first week and a half, it’s a bust. You’ll see a few glassy mornings on Wednesday the 2nd and Thursday the 3rd, but the swell is tiny – 2ft and 1ft, with short period energy. The wind is light and even glassy at times, but there’s no wave. The combined energy is in the 30s and 40s (38). It’s a paddle and float, not a surf.
From the 5th through the 15th, it’s all poor surf conditions with tiny heights and weak energy. Winds are mostly onshore or cross-onshore. The combined energy values are often in the single digits (1 to 32). This is a long, blank run.
Then, on Wednesday the 16th of September, something shows up. The morning brings a 5ft swell from the NE, with a period of 8 seconds and combined energy of 271 – that’s moderate power. The afternoon bumps it to 5ft from the NE, with 284 energy. The wind is light and onshore, so it’ll be choppy, but it’s the first real wave in two weeks. The guidance calls it “marginal” and it’ll be messy, but for this spot, this is the standout. It’s short period, so not a classic groundswell, but it’s something.
Bottom line: the first 15 days are a write-off. The 16th offers a brief window of small, onshore NE swell for the advanced crew. It won’t stay this dead forever.
Rusty.
Short Range ForecastHeavy rain (total 44mm), heaviest during Thu morning. Warm (max 29°C on Tue afternoon, min 27°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Sat night. Warm (max 30°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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) | ESE 12 | ESE 11 | E 6 | ENE 6 | E 5 | ENE 9 | E 4 | E 5 | ESE 5 | ESE 4 | E 8 | ENE 8 | E 8 | E 8 | E 7 | E 9 | NE 9 | E 8 | E 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 14 | 22 | 18 | 11 | 20 | 15 | 12 | 53 | 36 | 26 | 5 | 6 | 4 | 4 | 1 | 2 | 3 | 3 | 3 | 7 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | on | cross-on | glassy | on | cross-on | on | on | cross | cross | cross-on | cross-off | cross | on | glassy | glassy | on | cross-on |
High Tide | 00:13AM0.87m | 1:00PM0.90m | 1:02AM0.84m | 1:57PM0.87m | 2:00AM0.83m | 3:02PM0.85m | 3:07AM0.82m | 4:13PM0.85m | 4:21AM0.83m | 5:23PM0.87m | 5:34AM0.87m | 6:25PM0.92m | ||||||||
Low Tide | 5:47PM0.21m | 6:09AM0.05m | 6:40PM0.27m | 7:06AM0.09m | 7:41PM0.32m | 8:12AM0.12m | 8:50PM0.35m | 9:24AM0.13m | 10:02PM0.34m | 10:34AM0.11m | 11:10PM0.29m | 11:38AM0.09m | 00:10AM0.22m | |||||||
 |  |  | |  | | | |  |  | | | | | |  | |  | | | |
 | — | — | 6:58 | — | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — |
 | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — |
mm | — | 3 | 2 | 2 | 11 | 13 | 2 | 4 | 7 | — | 4 | 4 | 5 | 10 | — | 1 | 2 | — | 1 | 6 |
Temp °C | 29 | 29 | 29 | 29 | 28 | 29 | 27 | 28 | 28 | 29 | 29 | 29 | 30 | 27 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 31 | 33 | 33 | 31 | 30 | 33 | 28 | 29 | 32 | 32 | 32 | 32 | 32 | 30 | 32 | 33 | 32 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 6 | ENE 6 | ENE 10 | E 5 | NE 9 | ENE 8 | E 8 | S 4 | SSE 4 | SE 4 | SE 4 | E 8 | — | E 8 | NE 9 | SSE 3 | E 8 | ENE 8 |
| kJ | 5 | 10 | 18 | 11 | 9 | 11 | 3 | 7 | 5 | 3 | 4 | 4 | 4 | 4 | — | 1 | 3 | 1 | 1 | 7 |
Swell 2 Height (m) Direction Period (s) | ESE 12 | ESE 11 | ENE 10 | ENE 10 | ESE 9 | ENE 9 | — | E 9 | E 8 | ENE 8 | ENE 4 | ENE 8 | E 8 | SE 4 | E 7 | NE 6 | E 7 | E 8 | NE 8 | ENE 4 |
| kJ | 14 | 22 | 10 | 10 | 8 | 15 | — | 2 | 1 | 6 | 2 | 6 | 4 | 1 | 1 | 2 | 1 | 1 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | SE 9 | ENE 11 | ESE 10 | ESE 10 | — | ESE 9 | — | E 8 | E 8 | E 8 | E 8 | E 8 | N 7 | N 7 | — | E 9 | NE 6 | NE 8 | — | E 8 |
| kJ | 3 | 12 | 10 | 9 | — | 7 | — | 1 | 1 | 1 | 5 | 1 | 1 | 1 | — | 2 | 1 | 3 | — | 1 |
Wind waves Height (m) Direction Period (s) | NE 4 | SE 4 | — | — | E 5 | — | E 4 | E 5 | ESE 5 | ESE 4 | ESE 4 | — | — | SSE 4 | — | SE 4 | SSE 3 | — | — | SE 4 |
| kJ | 5 | 1 | — | — | 20 | — | 12 | 53 | 36 | 26 | 2 | — | — | 1 | — | 1 | 1 | — | — | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 366 | 366 | 61 | 366 | 203 | 800 | 292 | 238 | 867 | 112 | 203 | 397 | 919 | 715 | 399 | 312 | 857 | 399 | 312 | 1236 |
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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