Surf Forecasts:
Armacao surf forecast from 21 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 9AM (local time) - 5ft (1.6m), 7s period, NE swell with 226 kJ wave energy.
Best Forecast Surf Conditions for Armacao this week:
The most powerful waves expected at Armacao in the next 16 days are 1.6m 7s and forecast to arrive on Thursday (Aug 27) at 9AM. 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 10s period and expected on Friday (Aug 21) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Thu 27th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Armacao over the next 16 days.
The Lowdown
Alright, I’m lookin’ at the charts for Armacao, and I gotta be straight with you—it’s a tough stretch ahead. From now and well into the first half of September, there’s barely a ripple to get excited about. The guidance tells me this spot is fairly consistent and fairly exposed to swell, but the finder’s showing a long, grim run of poor surf conditions. We’re talking about a solid gap of nearly two weeks with no real surf on offer, just tiny, weak windswell and a lot of flat spells.
The first real chance of anything even worth a mention shows up on Friday, August 28th, in the afternoon. That’s the first time we see a little bit of pulse. The swell is coming from the northeast at 7 ft, and the period is a short 8 seconds, so it’s a bit of a messy, windswell feel. The wind is light and cross-shore, so the surface will be okay, but the wave quality is only marginal at best. The combined swell energy is 553 (moderate energy), so there’s some push, but it’s not gonna be a clean, lined-up day. This is expert-level size, and the short period means it’ll be a bit lumpy and tough to find a rhythm.
Before that, there’s nothing. Zip. It’s flat, or it’s onshore with tiny junky waves. The water temp is sitting at 67°, which is about normal for this time of year—nothing unusual there.
Monday, September 1st in the morning, we see a tiny little spike of 2 ft from the north with a period of 4 seconds, but that’s basically a lake ripple. The wind is light and cross-offshore, so it’ll be glassy clean, but there’s just no energy to work with. Not worth paddling out.
So, if you’re desperate for a paddle, the only window is that Friday afternoon, August 28th. It’s not a standout, it’s just the only thing on the board. The rest of the 16-day window is a write-off. For a spot that’s fairly consistent, this is a rough run, but it happens. Keep your eyes peeled for a change in the forecast, but for now, I’d be looking at other hobbies.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Very mild (max 19°C on Wed night, min 12°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | SSE 8 | SSE 8 | S 10 | S 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | SSE 14 | ENE 7 | SSE 15 | SSE 14 | SSE 13 | SSE 13 | NNE 3 | NE 4 | NE 5 | NE 6 | NE 7 | NNE 4 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 43 | 14 | 6 | 6 | 0 | 5 | 0 | 0 | 0 | 0 | 7 | 18 | 73 | 162 | 226 | 10 | 68 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-off | off | cross-off | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 12:28PM0.60m | 12:35PM0.66m | 11:25PM0.49m | 12:50PM0.72m | 11:53PM0.57m | 1:08PM0.77m | 00:18AM0.65m | 1:28PM0.80m | 00:42AM0.73m | 1:48PM0.82m | 1:07AM0.79m | 2:08PM0.83m | 1:33AM0.84m | ||||||||
Low Tide | 4:14AM0.27m | 6:21PM0.42m | 5:19AM0.20m | 6:35PM0.37m | 6:06AM0.12m | 6:57PM0.33m | 6:44AM0.05m | 7:21PM0.29m | 7:19AM-0.00m | 7:47PM0.27m | 7:53AM-0.04m | 8:15PM0.25m | |||||||||
 | |  |  |  | | | |  | | |  | | | | |  |  | | | | |
 | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | — | — | — |
Temp °C | 18 | 17 | 14 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 16 | 17 | 16 | 17 | 17 | 19 | 22 | 22 | 19 |
Feels °C | 17 | 12 | 9 | 9 | 8 | 9 | 10 | 8 | 9 | 10 | 11 | 13 | 13 | 14 | 14 | 17 | 17 | 19 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | E 7 | SSE 9 | SSE 10 | ENE 9 | SSE 10 | SSE 12 | SSE 12 | SSE 14 | SSE 13 | SSE 15 | SSE 14 | SSE 13 | SSE 13 | SSE 12 | SE 14 | SE 13 | SE 14 | SE 13 | SE 13 | ENE 7 |
| kJ | 58 | 37 | 506 | 399 | 25 | 274 | 379 | 551 | 1247 | 936 | 1467 | 850 | 606 | 489 | 294 | 799 | 569 | 667 | 398 | 290 | 68 |
Swell 2 Height (m) Direction Period (s) | E 7 | NNW 4 | E 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 7 | SE 16 | — | — | — | SE 17 | SE 16 | — | ENE 5 | ENE 6 | ENE 7 | E 7 | SE 13 |
| kJ | 35 | 1 | 30 | 23 | 43 | 14 | 6 | 6 | 4 | 521 | — | — | — | 44 | 357 | — | 20 | 55 | 82 | 61 | 156 |
Swell 3 Height (m) Direction Period (s) | E 11 | — | — | — | — | — | — | — | — | ENE 7 | — | — | — | — | — | — | SE 17 | — | — | — | — |
| kJ | 2 | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | 135 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 8 | S 10 | S 10 | SSE 9 | — | — | S 3 | — | — | — | — | — | — | NNE 3 | NE 4 | NE 5 | NE 6 | NE 7 | NNE 4 | NNW 3 |
| kJ | — | 164 | 1325 | 978 | 336 | — | — | 5 | — | — | — | — | — | — | 7 | 18 | 73 | 162 | 226 | 10 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 42 | 17 | 9 | 17 | 4 | 2 | 17 | 4 | 9 | 41 | 2 | 2 | 3 | 2 | 2 | 2 | 3 | 3 | 74 | 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.
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