Surf Forecasts:
Joaquina surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 9AM (local time) - 5.5ft (1.7m), 14s period, SSE swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 12PM (local time) - 6ft (1.8m), 14s period, SSE swell with 1,247 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 2.5ft (0.7m), 8s period with E 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 Thursday (Aug 20) at 3AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Joaquina in the next 16 days are 1.8m 14s and forecast to arrive on Monday (Aug 24) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 9s period and expected on Saturday (Aug 22) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 9AM (Mon 24th Aug) | 5.5ft (1.7m) 14s |
| Most Powerful | 12PM (Mon 24th Aug) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Joaquina over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s ahead for Joaquina.
The next week and a half is a bit of a mixed bag, with a lot of small, blown-out days to start. Honestly, there’s nothing really worth paddling out for until that Monday the 24th. We’ve got a stretch of very small, mostly messy conditions from Tuesday the 18th right through to Saturday the 22nd, with waves barely breaking 1.6ft to 3.9ft and cross-onshore winds messing up the surface. It’s a tough run, with the combined swell energy staying weak to moderate (between 6 and 213). A little window shows up on Saturday morning the 22nd with chest-high 3.9ft SSE swell, but it's still light cross-onshore wind and the conditions are marginal at best.
Now, mark your calendars for Monday the 24th of August. That morning is the real standout. We’re looking at a solid 5.6ft swell from the SSE with a very long period of 14 seconds – that’s proper groundswell energy, and the combined swell energy is strong at 1112. To top it off, the wind goes glassy, just a slight air, meaning you’re going to get clean, lined-up waves. At this size, it’s a bit much for beginners, but for any intermediate to expert surfer, that’s the pick of the forecast.
After that, conditions drop off again. Tuesday the 25th still has some 4.3ft SSE swell with clean, cross-off winds, but it’s not the same quality. Wednesday the 26th sees the swell drop back to 2.6ft. It’s generally clean but much smaller. The following week flattens out again, with very poor conditions and tiny swell through to the start of September. The combined energy dips right back down to weak levels (46 to 166). We’ve got a 2nd September morning with a 3.0ft SE swell and clean conditions, but it’s a marginal one for a paddle.
So, keep your eyes on that Monday the 24th – it’s the only real standout in this run.
Short Range ForecastMostly dry. Warm (max 26°C on Tue afternoon, min 18°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Fri morning, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | SE 9 | SE 10 | S 10 | E 14 | E 14 | E 13 | SSE 7 | SSE 7 | SSE 7 | S 8 | S 8 | S 7 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 11 | SSE 11 | SSE 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 3 | 4 | 3 | 4 | 4 | 3 | 11 | 26 | 26 | 5 | 5 | 28 | 254 | 213 | 336 | 360 | 478 | 451 | 416 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 4:34AM0.74m | 4:34PM0.64m | 5:18AM0.65m | 4:52PM0.60m | 6:21AM0.56m | 1:10PM0.55m | 12:32PM0.61m | 12:33PM0.68m | 11:20PM0.51m | 12:47PM0.75m | 11:56PM0.60m | ||||||||
Low Tide | 9:31PM0.27m | 10:02AM0.36m | 9:58PM0.27m | 9:57AM0.44m | 10:32PM0.30m | 9:38AM0.50m | 2:43PM0.54m | 2:21AM0.34m | 4:22AM0.29m | 6:28PM0.44m | 5:27AM0.21m | 6:42PM0.38m | |||||||
 |  | | | | |  |  |  | | | | | | |  | | | | |
 | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 25 | 26 | 22 | 19 | 20 | 18 | 21 | 20 | 20 | 22 | 20 | 16 | 15 | 14 | 13 | 13 | 14 | 13 |
Feels °C | 19 | 25 | 26 | 24 | 18 | 19 | 19 | 21 | 19 | 21 | 20 | 18 | 13 | 12 | 9 | 8 | 10 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | E 7 | E 7 | SSE 9 | SSE 9 | E 9 | SSE 9 | SSE 11 | SSE 11 | SSE 11 |
| kJ | 212 | 171 | 176 | 147 | 84 | 60 | 55 | 57 | 41 | 42 | 45 | 70 | 254 | 213 | 41 | 360 | 478 | 451 | 416 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 10 | S 10 | S 9 | — | E 13 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | S 8 | S 10 | E 8 | E 9 | — | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 3 | 4 | 2 | 2 | — | 3 | 11 | 26 | 26 | 3 | 5 | 2 | 69 | 55 | — | 25 | 13 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | SE 8 | SE 8 | E 14 | E 14 | S 9 | SSE 4 | SSE 9 | E 12 | S 8 | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | 3 | 4 | 4 | 1 | 2 | 17 | 3 | 5 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 8 | NNW 4 | NE 8 | SSW 3 | SSW 3 | SSE 3 | — | — | NE 3 | N 4 | — | S 7 | S 9 | S 9 | SSE 9 | — | — | — | — |
| kJ | 467 | 8 | 428 | 2 | 2 | 2 | — | — | 3 | 9 | — | 28 | 828 | 635 | 336 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 3 | 12 | 3 | 6 | 27 | 3 | 0 | 60 | 3 | 3 | 6 | 23 | 6 | 858 | 23 | 6 | 23 | 6 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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