Surf Forecasts:
Joaquina surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 3AM (local time) - 4ft (1.2m), 10s period, SSE swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 6AM (local time) - 5ft (1.6m), 10s period, S swell with 545 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 12AM (local time) - 2.5ft (0.8m), 8s period with SE swell.
Best Forecast Surf Conditions for Joaquina this week:
The surf forecast for Joaquina over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 12AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.6m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Joaquina in the next 16 days are 1.6m 10s and forecast to arrive on Wednesday (Sep 16) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Saturday (Sep 19) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 15th Sep) | 2.5ft (0.8m) 8s |
| Best Surf | 3AM (Thu 17th Sep) | 4ft (1.2m) 10s |
| Most Powerful | 6AM (Wed 16th Sep) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Joaquina over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s talk about Joaquina in feet and miles per hour. This forecast requires some patience, no doubt. The first week is mostly a write-off, with winds blowing the wrong way and the swell small and choppy.
From Monday the 14th through Saturday the 19th, expect poor conditions. Winds are cross or cross-on, swell heights only 2-4ft at best, and with short periods around 8-9 seconds, it’s all windswell slop. The combined wave energy sits in the 100 to 400 range, so moderate but ugly.
Then we hit a real flat spell. From Sunday the 20th to Wednesday morning the 23rd, it’s barely a ripple – swell heights under half a foot, energy readings dropping to single digits. Dead flat for about four days. You could nearly walk out to the sandbar.
The one session that’s worth circling on the calendar is Thursday morning, September 24th. Joaquina will see a clean 4ft swell from the east, with a period of 8 seconds and a nice offshore NNW wind blowing around 9 mph. That’s the recipe for clean, lined-up waves. Combined energy reads 203, moderate, but the offshore breeze will really clean things up. For an exposed sandbar that likes east swell, this is your best window. Just remember that short period means less grunt, but for a fun morning session, it’s the standout.
After that, Friday the 25th and the rest of the run goes back to small, weak, and onshore. Nothing else to chase.
Bottom line: save your energy for the 24th morning. That’s the one.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun night. Very mild (max 17°C on Tue morning, min 13°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Sat afternoon. Very mild (max 19°C on Fri morning, min 15°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | SSE 7 | SE 9 | SE 9 | SE 8 | SE 8 | SSE 8 | SE 7 | SSE 8 | SSE 8 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SE 10 | NE 6 | SE 12 | E 8 | SSE 9 | E 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 93 | 107 | 88 | 80 | 118 | 262 | 67 | 145 | 177 | 435 | 214 | 79 | 160 | 94 | 88 | 49 | 163 | 16 | 264 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | off | cross-off | cross-off | cross | cross | cross | cross |
High Tide | 3:03AM0.87m | 3:10PM0.73m | 3:37AM0.81m | 3:28PM0.70m | 4:13AM0.74m | 3:46PM0.67m | 4:55AM0.65m | 4:01PM0.62m | 5:54AM0.56m | 12:38PM0.58m | 00:14AM0.34m | 12:08PM0.63m | |||||||
Low Tide | 9:19AM0.25m | 8:47PM0.18m | 9:16AM0.33m | 9:06PM0.18m | 9:14AM0.40m | 9:29PM0.20m | 9:12AM0.46m | 9:54PM0.26m | 8:52AM0.51m | 3:16PM0.57m | 10:21PM0.33m | ||||||||
 |  |  |  |  |  |  | | | | | | |  | | | |  |  | |
 | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:05 | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — |
mm | 1 | 1 | — | — | — | — | 2 | — | — | — | — | — | — | 1 | 2 | 5 | 4 | 9 | 17 |
Temp °C | 15 | 14 | 15 | 14 | 17 | 16 | 15 | 17 | 17 | 15 | 18 | 18 | 18 | 19 | 19 | 19 | 18 | 19 | 19 |
Feels °C | 12 | 12 | 14 | 13 | 15 | 13 | 13 | 14 | 13 | 11 | 15 | 15 | 17 | 18 | 18 | 18 | 16 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SE 9 | SE 9 | SE 8 | SE 8 | SE 9 | SE 7 | SSE 8 | E 8 | SSE 11 | SSE 11 | SSE 8 | SSE 10 | SE 10 | SE 9 | SSE 9 | E 8 | SSE 9 | E 8 |
| kJ | 93 | 107 | 88 | 80 | 118 | 91 | 67 | 145 | 30 | 435 | 214 | 61 | 160 | 94 | 88 | 49 | 163 | 16 | 264 |
Swell 2 Height (m) Direction Period (s) | E 8 | SSE 11 | S 9 | SSE 8 | E 8 | E 8 | E 8 | E 8 | E 13 | ESE 8 | ESE 8 | SSE 11 | ESE 10 | ENE 5 | ENE 5 | SE 12 | SE 9 | SSE 11 | ENE 9 |
| kJ | 21 | 98 | 41 | 57 | 31 | 55 | 55 | 43 | 3 | 20 | 19 | 79 | 20 | 12 | 21 | 23 | 21 | 12 | 135 |
Swell 3 Height (m) Direction Period (s) | SE 12 | E 8 | SSE 11 | E 8 | SSE 11 | SSE 10 | SSE 12 | SE 16 | E 12 | E 12 | ESE 12 | E 7 | — | ESE 10 | ESE 9 | SE 12 | SE 11 | SSE 11 | SSE 12 |
| kJ | 38 | 11 | 47 | 23 | 22 | 41 | 58 | 9 | 12 | 3 | 13 | 9 | — | 30 | 16 | 37 | 20 | 12 | 14 |
Wind waves Height (m) Direction Period (s) | SSW 7 | S 11 | — | — | SSW 2 | SSE 8 | S 6 | — | SSE 8 | — | — | NE 2 | ENE 4 | NE 5 | NE 6 | E 6 | NE 7 | E 8 | — |
| kJ | 121 | 475 | — | — | 1 | 262 | 59 | — | 177 | — | — | 1 | 6 | 26 | 72 | 97 | 107 | 266 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 6 | 6 | 6 | 0 | 6 | 30 | 6 | 6 | 82 | 6 | 0 | 28 | 0 | 0 | 71 | 60 | 60 | 60 | 60 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Joaquina Surf forecast
The above surf forecast table for Joaquina provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Joaquina can be found by selecting the local surf guide option on the grey menu. Our Joaquina 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 (Joaquina) 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 Joaquina 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.
Joaquina is 9 km (6 miles) from Florianopolis. If you plan a holiday in Florianópolis, look for hotels and other accommodation in Florianopolis. Florianopolis has rooms for a wide range of budgets as well as car hire and transport links.
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