Surf Forecasts:
Armacao surf forecast from 2 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 6AM (local time) - 6.5ft (2.0m), 7s period, ENE swell with 394 kJ wave energy.
Best Forecast Surf Conditions for Armacao this week:
The most powerful waves expected at Armacao in the next 16 days are 2.0m 7s and forecast to arrive on Wednesday (Sep 09) 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 9s period and expected on Sunday (Sep 06) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Wed 9th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Armacao over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be straight with you – we're looking at a pretty bleak stretch here in Armacao. The first real whisper of swell doesn't show up until a week away, but honestly, the conditions are so messy it’s hard to get excited about anything. We've got a long gap of flat, clean days from the start of the period right through to September 9th, with nothing but poor surf and fresh winds. Best to keep the boards in the car and the wax in the wrapper for now.
Come Wednesday the 9th, things finally wake up. We get a pulse of NE groundswell pushing in. Wednesday morning we'll see swell building to about 5 ft on a short 7-second period, with a combined energy of 262 (moderate energy). It’s coming from the NE, which isn't ideal for the exposed spots. The wind is cross-onshore from the NNW at 18 mph, so it's gonna be lumpy and choppy. By the afternoon, the swell jumps up to 6 ft and the energy climbs to 402 (strong energy), still with a short period. On top of that, we get onshore wind from the NE at 9 mph. It’s not going to be pretty. With that much wind chop on a beach setup, this looks more like a kite session than a paddle-in wave.
For a little flicker of hope, look further ahead to September 17th. Thursday afternoon shows a 4 ft swell rolling in from the east, period of 6 seconds, and combined energy of 80 (weak energy). Wind will be a clean cross-off from the SSE at 12 mph, which is a solid improvement. Still, the energy is low, and it’s a long way out, so keep an eye on it but don’t pin your hopes on it yet.
Water temp earlier in the period was sitting around 66°, which is just about average for the time of year – nothing to write home about.
Short story: the best (and honestly only) chance for a surfable wave is that September 9th window, but only if you can handle wind-blown slop. The 17th offers the cleanest air but the weakest swell. For the rest of it, you’re better off finding something else to do.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Fri afternoon. Warm (max 21°C on Thu morning, min 13°C on Fri night). Winds increasing (light winds from the E on Wed afternoon, fresh winds from the SSE by Fri morning). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sat morning. Very mild (max 15°C on Sun morning, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 | SE 11 | SE 11 | N 3 | NNE 4 | NNE 5 | ESE 11 | SE 10 | S 7 | S 9 | S 9 | S 9 | S 8 | SSE 8 | S 10 | S 10 | ENE 7 | SE 10 | SE 10 | ENE 7 | ENE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 4 | 28 | 69 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 10 | 218 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | on | cross |
High Tide | 4:31PM0.57m | 5:26AM0.64m | 4:56PM0.50m | 11:55PM0.35m | 7:09AM0.55m | 00:08AM0.39m | 12:26PM0.76m | 00:17AM0.44m | 12:59PM0.82m | 00:12AM0.50m | 1:27PM0.85m | 00:05AM0.59m | 1:46PM0.84m | 00:19AM0.68m | |||||||
Low Tide | 12:29PM0.38m | 9:07PM0.29m | 8:55AM0.52m | 2:25PM0.45m | 9:13PM0.30m | 7:58AM0.55m | 9:22PM0.33m | 3:42AM0.27m | 9:01PM0.38m | 4:56AM0.17m | 6:39PM0.36m | 5:52AM0.07m | 7:03PM0.34m | 6:37AM-0.00m | 7:27PM0.33m | ||||||
 | |  | | |  |  |  |  | | | |  | |  | | | | | | | |
 | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — |
mm | — | — | — | — | — | — | — | 3 | 5 | 4 | 2 | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 21 | 21 | 17 | 16 | 16 | 14 | 14 | 14 | 14 | 15 | 14 | 13 | 13 | 13 | 14 | 17 | 17 | 15 |
Feels °C | 14 | 14 | 14 | 17 | 18 | 16 | 12 | 11 | 11 | 11 | 9 | 10 | 11 | 9 | 9 | 8 | 7 | 12 | 13 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 11 | E 8 | E 8 | SSE 9 | SSE 8 | SSE 5 | SSE 8 | E 8 | SSE 10 | SSE 10 | SSE 10 | SE 10 | SE 10 | SE 9 | E 6 |
| kJ | 509 | 584 | 524 | 360 | 242 | 145 | 76 | 46 | 92 | 106 | 94 | 20 | 73 | 20 | 551 | 471 | 543 | 348 | 230 | 208 | 106 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | E 9 | E 9 | ENE 9 | ENE 9 | NE 5 | ENE 6 | SE 10 | SSE 7 | E 9 | E 8 | E 8 | E 8 | — | E 8 | E 8 | E 8 | E 8 | E 7 | ENE 7 | SE 9 |
| kJ | 32 | 63 | 40 | 25 | 25 | 18 | 12 | 51 | 50 | 94 | 71 | 49 | 33 | — | 11 | 11 | 11 | 10 | 4 | 10 | 64 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 11 | ENE 8 | ENE 8 | S 9 | SE 10 | SE 9 | SE 10 | S 9 | SE 11 | — | — | — | ENE 7 | — | — | S 16 | S 15 |
| kJ | — | — | — | — | 2 | 24 | 22 | 2 | 27 | 23 | 17 | 40 | 4 | — | — | — | 5 | — | — | 5 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | N 3 | NNE 4 | NNE 5 | S 4 | SSE 5 | S 7 | S 9 | S 9 | S 9 | S 8 | SSE 8 | S 10 | S 10 | — | — | — | — | ENE 6 |
| kJ | — | — | — | 4 | 28 | 69 | 13 | 27 | 86 | 262 | 252 | 258 | 165 | 277 | 1537 | 1024 | — | — | — | — | 218 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 36 | 3 | 19 | 46 | 3 | 41 | 41 | 1 | 17 | 17 | 3 | 9 | 68 | 17 | 9 | 36 | 2 | 2 | 241 | 3 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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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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