
Surf Forecasts:
Armacao surf forecast from 12 Aug 2026:
- Most powerful swell: Monday 17 Aug, 3PM (local time) - 7ft (2.2m), 9s period, ENE swell with 794 kJ wave energy.
Best Forecast Surf Conditions for Armacao this week:
The most powerful waves expected at Armacao in the next 16 days are 2.2m 9s and forecast to arrive on Monday (Aug 17) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 9s period and expected on Monday (Aug 17) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Mon 17th Aug) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Armacao over the next 16 days.
The Lowdown
Right, let’s talk about Armação over the next couple of weeks. I’m looking at the charts here and, honestly, it’s a pretty grim stretch for the most part. We’ve got a serious quiet spell coming up. There’s hardly any push for days on end, and when a little bump does show, the wind is usually a mess. You’re going to have to be patient and pick your moments.
The whole period kicks off with next to nothing. Wednesday the 12th and Thursday the 13th are a write-off – tiny, choppy junk on Wednesday, then flat on Thursday. Friday the 14th offers a glimmer, with a glassy morning and a tiny 0.7ft swell from the ENE, but it’s just too small to do anything with. The afternoon sees a bit more size, 2ft from the NE, but it’s still pretty weak, with the combined energy at only 19. It’s not worth paddling out for.
Then we hit a real dry patch. From Saturday the 15th right through to late in the month, the swell is mostly absent, or when it does show up, it’s either blown out or has no shape. Saturday the 15th afternoon sees a brief pulse of 4ft from the NNE, but it’s a short-period, messy cross-onshore affair. The wind is all over the place.
The one day that gets my attention is Monday the 17th. The afternoon brings a solid 7ft swell from the ENE, with a period of 9 seconds and a chunky combined energy of 794. That’s some real push. But, and it’s a big but, the wind is howling from the north at 19 mph, blowing straight onshore. That’s going to turn it into a lumpy, choppy mess. For a surfer, that’s a no-go. For a kiter, that setup with that much wind and that much swell might actually look pretty interesting. If you’re paddling, save your energy.
There’s a little more energy on the 19th with a 3ft groundswell from the ENE (period 8 seconds, energy 161), but again, it’s cross-onshore and choppy. The rest of the week into the 20th and 21st sees plenty of clean, glassy mornings, but with zero swell. It’s a cruel tease.
The last week of August is more of the same. A few small 2ft to 2ft pulses from the NNE and NE on the 22nd, but the wind is clean offshore. That’s about the best you’ll find in this entire run – small, clean, and rideable if you’re on a longboard. After that, it’s flat again right through to the 27th.
So, here’s the bottom line. There’s no standout day. The best on offer is probably the late morning of Saturday the 22nd, with a clean 2ft from the NNE. It’s tiny, but it’s clean. The other possible option is the afternoon of Monday the 17th, but only if you’re a kitesurfer looking for wind and chop. For a straight paddle surfer, this is a long, frustrating stretch. The water temp is about what you’d expect for this time of year, so no surprises there.
Rusty.
Short Range ForecastHeavy rain (total 37mm), heaviest during Fri afternoon. Very mild (max 18°C on Thu morning, min 12°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 30mm), heaviest during Fri night. Warm (max 22°C on Mon afternoon, min 17°C on Fri night). Winds increasing (light winds from the NNE on Fri night, fresh winds from the N by Mon afternoon). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 12 | NE 7 | NE 3 | NE 4 | SSE 14 | SSE 14 | ENE 6 | ENE 6 | NE 6 | NE 6 | ESE 8 | NNE 4 | NNE 4 | NNE 4 | N 3 | ENE 8 | N 4 | ENE 9 | E 9 |
Wave Graph | |||||||||||||||||||
0 | 8 | 3 | 9 | 0 | 0 | 6 | 4 | 19 | 9 | 0 | 42 | 46 | 22 | 1 | 527 | 39 | 794 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | off | cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:01AM0.70m | 2:44PM0.81m | 1:29AM0.77m | 2:54PM0.76m | 2:01AM0.83m | 3:07PM0.72m | 2:34AM0.85m | 3:24PM0.69m | 3:09AM0.83m | 3:42PM0.67m | 3:45AM0.78m | 4:02PM0.65m | |||||||
Low Tide | 8:18AM-0.07m | 8:56PM0.37m | 8:54AM-0.05m | 9:16PM0.38m | 9:27AM-0.00m | 9:29PM0.37m | 9:55AM0.08m | 9:24PM0.34m | 10:15AM0.18m | 9:07PM0.30m | 10:18AM0.28m | 9:18PM0.27m | |||||||
— | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | |
— | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | 8 | 1 | — | — | 1 | 3 | 8 | 7 | 9 | 19 | 4 | 3 | 1 | 2 | 1 | — | — | — | — |
Temp °C | 12 | 14 | 16 | 16 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 19 | 22 | 19 |
Feels °C | 11 | 11 | 14 | 14 | 18 | 14 | 19 | 20 | 20 | 19 | 18 | 19 | 19 | 21 | 22 | 21 | 18 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 14 | SSE 9 | SE 8 | SE 14 | ESE 8 | ESE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 |
554 | 480 | 488 | 243 | 691 | 635 | 154 | 141 | 532 | 178 | 181 | 163 | 169 | 145 | 181 | 223 | 273 | 363 | 332 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | SE 15 | ENE 5 | ENE 5 | SSE 13 | SSE 13 | SE 7 | SSE 13 | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SE 10 | SE 10 | SSE 10 | SSE 10 | SSE 10 |
5 | 4 | 1 | 223 | 8 | 10 | 290 | 357 | 147 | 430 | 177 | 111 | 68 | 42 | 28 | 27 | 10 | 11 | 11 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 6 | ENE 6 | — | NE 6 | E 16 | E 16 | E 13 | ESE 14 | ESE 13 | — | SSE 12 | — | S 9 |
— | — | — | — | — | — | 6 | 4 | — | 9 | 5 | 5 | 3 | 18 | 17 | — | 14 | — | 2 | |
Wind waves Height (m) Direction Period (s) | — | NE 7 | NE 3 | NE 4 | — | S 3 | — | — | NE 6 | — | — | NNE 4 | NNE 4 | NNE 4 | N 3 | ENE 8 | N 4 | ENE 9 | — |
— | 8 | 3 | 9 | — | 7 | — | — | 19 | — | — | 42 | 46 | 22 | 1 | 527 | 39 | 794 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2 | 2 | 3 | 3 | 6 | 36 | 9 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 42 | 2 | 27 | 62 | 3 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Armacao Surf forecast
The above surf forecast table for Armacao provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Armacao can be found by selecting the local surf guide option on the grey menu. Our Armacao 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 (Armacao) 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 Armacao 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.
Armacao is 19 km (12 miles) from the city of 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.











