Surf Forecasts:
Joaquina surf forecast from 17 Aug 2026:
- Best quality surf: Sunday 23 Aug, 6AM (local time) - 4.5ft (1.3m), 11s period, SSE swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 7ft (2.1m), 12s period, S swell with 1,164 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 6AM (local time) - 4.5ft (1.3m), 11s period with SSE 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 Sunday (Aug 23) at 6AM. The primary swell is predicted to be 1.3m and 11s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Joaquina in the next 16 days are 2.1m 12s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 11s period and expected on Monday (Aug 24) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 23rd Aug) | 4.5ft (1.3m) 11s |
| Best Surf | 6AM (Sun 23rd Aug) | 4.5ft (1.3m) 11s |
| Most Powerful | 3AM (Mon 24th Aug) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Joaquina over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s break down what’s in store for Joaquina over the next couple of weeks.
Right off the bat, I gotta be straight with you – the next several days are gonna be a tough watch. From Monday morning the 17th straight through to Saturday the 22nd, we’ve got barely a ripple. Swell heights are flat at 0.3ft to 2ft, and the energy is weak (28). Winds are mostly cross-off or cross-onshore, but it doesn’t matter because there’s hardly any swell to work with. It’s a rough patch, and you’re better off waxing your board at home.
Looking at the whole 16-day run, the real standout is Sunday the 23rd. That morning, things finally start to breathe. We’ve got glassy conditions – zero wind – and a clean 4ft SSE swell rolling in with an 11-second period and moderate energy (328). It’s not huge, but that glassy, clean surface will make it feel like a different spot. This is the best on offer for the near term.
Monday the 24th takes a step back with onshore winds and a choppy 5ft SSE swell (587 energy), so paddle out early if you can.
Now, here’s the one I’m getting excited about – Tuesday the 25th. That morning brings a light NW offshore breeze, 4ft of SSE swell, a 12-second period, and strong energy (526). The conditions are clean, the set waves have some push, and it’s the pick of the whole outlook. Get in the water if you can.
The rest of that week is mixed. Wednesday the 26th is surfable but small and ordinary. Thursday the 27th and Friday the 28th improve with clean 4ft to 4ft E swells and moderate energy (299). Friday afternoon the 28th turns glassy again with a 3ft S swell at 13 seconds and strong energy (628) – that’s a sweet little window.
Saturday the 29th morning is still clean, but by afternoon and into Sunday the 30th, the wind swings onshore and the quality drops.
Then on Monday the 31st of August, we get a late highlight. The afternoon brings a solid 5ft SSE swell, 14-second period, and very strong energy (1006). With a light cross-off breeze and clean conditions, this is a proper session for experienced surfers. The long period from the SSE is a classic groundswell – it’ll wrap in nicely at Joaquina’s sandbar setup.
Into Tuesday the 1st of September, the wind turns onshore again and the quality falls off.
Overall, the best windows are Sunday morning the 23rd, Tuesday morning the 25th, Friday afternoon the 28th, and Monday afternoon the 31st.
Keep your eyes on the horizon, and don’t let the flat spells get you down.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Thu morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | SE 10 | SSE 10 | SE 10 | S 10 | S 10 | E 14 | S 4 | S 8 | S 7 | SSE 10 | SSE 9 | SSE 8 | S 8 | S 8 | SSE 9 | SSE 9 | SSE 8 | SSE 9 | SSE 11 | SSE 11 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 25 | 10 | 4 | 8 | 3 | 4 | 9 | 5 | 24 | 19 | 16 | 14 | 5 | 29 | 213 | 173 | 160 | 262 | 328 | 346 | 1074 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | on | glassy | cross-off | cross-off | off | off | cross-on | cross-on | cross | cross-on | cross-on | glassy | on | cross-on |
High Tide | 4:14PM0.67m | 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 | 10:11AM0.28m | 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 | ||||||||
 |  |  | | | | | |  | | | | |  | | | |  | | | | |
 | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 18 | 23 | 24 | 21 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 |
Feels °C | 19 | 19 | 17 | 22 | 23 | 23 | 21 | 21 | 22 | 18 | 19 | 21 | 18 | 13 | 13 | 14 | 11 | 10 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | E 7 | E 8 | SSE 9 | SSE 9 | E 9 | SSE 9 | SSE 11 | SSE 11 | SSE 12 |
| kJ | 223 | 200 | 221 | 167 | 176 | 147 | 84 | 60 | 55 | 57 | 42 | 55 | 66 | 108 | 213 | 173 | 57 | 262 | 328 | 346 | 461 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSE 10 | SE 10 | S 10 | S 10 | S 9 | S 4 | S 4 | S 7 | SSE 6 | SSE 9 | SSE 8 | S 8 | — | E 9 | E 9 | SE 15 | SSE 12 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 25 | 10 | 4 | 8 | 2 | 2 | 3 | 1 | 24 | 16 | 16 | 14 | 5 | — | 101 | 57 | 8 | 101 | 13 | 12 | 6 |
Swell 3 Height (m) Direction Period (s) | E 12 | — | — | SE 8 | SE 8 | E 14 | E 14 | S 8 | SE 12 | SSE 10 | SE 6 | SSE 6 | SSE 5 | — | — | — | SSE 14 | ENE 9 | — | — | — |
| kJ | 3 | — | — | 3 | 3 | 4 | 4 | 5 | 5 | 19 | 8 | 3 | 3 | — | — | — | 20 | 25 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NNE 4 | NE 8 | NNW 4 | NNW 4 | S 4 | S 4 | — | — | — | NE 4 | N 4 | — | S 8 | SSW 9 | — | SSE 8 | — | — | — | S 12 |
| kJ | — | 10 | 467 | 16 | 9 | 2 | 9 | — | — | — | 14 | 10 | — | 29 | 572 | — | 160 | — | — | — | 1074 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 61 | 49 | 12 | 36 | 3 | 6 | 14 | 3 | 4 | 60 | 3 | 3 | 31 | 6 | 6 | 82 | 6 | 0 | 28 | 23 |
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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