Surf Forecasts:
Jupiter Inlet South Jetty surf forecast from 9 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 8AM (local time) - 3ft (0.9m), 5s period, SE swell with 35 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 5s and forecast to arrive on Saturday (Aug 15) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 5s period and expected on Saturday (Aug 15) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 15th Aug) | 3ft (0.9m) 5s |
Table - best surf conditions forecast for Jupiter Inlet South Jetty over the next 16 days.
The Lowdown
Alright, Rusty here, checking in on the local surf. I’m not gonna sugarcoat it—this is a tough stretch. For the next 16 days, the Jupiter Inlet South Jetty is the only spot in the game, and the surf is just poor. It’s a blank run from the start.
For the first week, from Sunday, August 9th through the 16th, the swell is tiny. We’re talking ankle to knee-high at best, with the wind mostly cross-on or onshore, making it a bumpy mess. The combined energy is weak, barely cracking 36 on Sunday morning and dropping to a pitiful 4 on Wednesday the 12th. That Wednesday morning is glassy, but with a 0.1m wave, you’re not riding anything. The 13th of August has a clean cross-offshore wind, but again, the swell is a goose egg.
The only real pulse comes on Monday, August 17th. The swell bumps up to 0.7m from the NNE, with a combined energy of 54. The wind is cross-shore in the morning and cross-on in the afternoon, so it’s not clean. It’s the biggest we’ll see, but it’s still a "poor surf conditions" call. The water temp is a warm 85°F, which is about average for the time of year, so at least you won’t be cold while you’re waiting for nothing.
The second week is more of the same. The 20th of August, a Thursday, has a clean cross-offshore morning wind, but the swell is just 0.3m. The 21st of August, a Friday, has a clean offshore wind, but it’s on a 0.2m, 9-second period ENE swell. You’ll be sitting on a flat ocean. The 18th of August, a Tuesday morning, is glassy with 0.7m swell and a combined energy of 47, which is the best you’ll get for clean conditions, but it’s still weak.
The jetty works best with a NE swell direction, and we’re mostly getting ESE, SE, and ENE. The period is short, usually under 8 seconds, so it’s just wind slop. There’s a 13-second period on the 14th, but it’s only 0.1m, so it’s a tease.
No standouts here. The best on offer is that Tuesday morning, the 18th of August, with glassy conditions and 0.7m. It’ll be weak, but it’s the most ridable wave of the whole run. A stretch like this in the area can happen, so don’t get too down—forecasts can change, and it usually doesn’t stay this flat for long.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 30°C on Sun morning, min 28°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 30°C on Wed afternoon, min 27°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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) | ESE 4 | E 7 | ENE 7 | SE 5 | SE 5 | ENE 7 | ENE 9 | ENE 8 | SE 4 | NE 9 | SE 4 | SSE 3 | NE 8 | SE 3 | SE 3 | ESE 4 | SE 4 | ESE 4 | SE 5 | ESE 5 | SE 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 27 | 16 | 17 | 11 | 9 | 8 | 7 | 5 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 10 | 33 | 13 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross | glassy | on | cross | cross-off | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:40PM0.84m | 6:45AM0.83m | 7:37PM0.89m | 7:46AM0.88m | 8:29PM0.94m | 8:42AM0.92m | 9:16PM0.96m | 9:34AM0.95m | 10:01PM0.97m | 10:22AM0.95m | 10:44PM0.96m | 11:10AM0.94m | 11:26PM0.92m | ||||||||
Low Tide | 11:47AM-0.06m | 00:20AM0.15m | 12:46PM-0.10m | 1:17AM0.09m | 1:41PM-0.13m | 2:11AM0.02m | 2:33PM-0.13m | 3:01AM-0.03m | 3:23PM-0.11m | 3:49AM-0.06m | 4:11PM-0.06m | 4:36AM-0.07m | 4:58PM0.01m | ||||||||
 | |  |  | | | | | | | | | | | | | | |  | |  | |
 | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — |
 | — | 8:01 | — | — | 8:00 | — | — | 8:00 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 30 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 32 | 30 | 32 | 31 | 32 | 31 | 33 | 32 | 31 | 33 | 32 | 30 | 33 | 32 | 30 | 31 | 32 | 31 | 32 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | E 7 | ENE 7 | ENE 9 | SE 5 | SSE 6 | SSE 5 | SSE 5 | NE 8 | SSE 4 | NE 8 | NE 8 | — | E 7 | E 7 | SSE 4 | SSE 4 | NE 13 | ENE 12 | S 5 | NE 11 |
| kJ | 10 | 27 | 16 | 7 | 11 | 6 | 6 | 2 | 3 | 1 | 3 | 3 | — | 1 | 1 | 3 | 4 | 7 | 14 | 13 | 5 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | S 4 | SSE 4 | E 7 | ENE 7 | ENE 7 | ENE 9 | E 7 | E 7 | ESE 3 | E 7 | E 7 | E 7 | NE 8 | NE 8 | E 8 | E 8 | NE 8 | E 8 | ENE 12 | E 8 |
| kJ | 8 | 3 | 4 | 4 | 9 | 9 | 8 | 3 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 1 | 1 | 2 | 1 | 13 | 5 |
Swell 3 Height (m) Direction Period (s) | E 7 | ENE 9 | ENE 9 | E 7 | ENE 8 | ENE 9 | E 7 | ENE 8 | E 7 | NE 9 | E 7 | E 7 | NE 8 | E 7 | E 7 | E 7 | NE 13 | E 7 | NE 8 | E 8 | ESE 8 |
| kJ | 1 | 8 | 8 | 1 | 7 | 7 | 3 | 7 | 1 | 3 | 1 | 1 | 3 | 1 | 1 | 1 | 7 | 1 | 2 | 5 | 6 |
Wind waves Height (m) Direction Period (s) | ESE 4 | SE 5 | SE 4 | SE 5 | E 4 | SE 4 | ESE 4 | ESE 4 | SE 4 | — | SE 4 | SSE 3 | SSE 3 | SE 3 | SE 3 | ESE 4 | SE 4 | ESE 4 | SE 5 | ESE 5 | SE 5 |
| kJ | 17 | 10 | 4 | 17 | 5 | 5 | 3 | 2 | 5 | — | 2 | 3 | 1 | 2 | 5 | 6 | 4 | 10 | 33 | 13 | 23 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 238 | 1538 | 203 | 109 | 1562 | 109 | 715 | 1631 | 388 | 653 | 1623 | 566 | 388 | 474 | 1031 | 1012 | 867 | 328 | 867 | 1516 | 109 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
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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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