
Surf Forecasts:
Armacao surf forecast from 8 Sep 2026:
- Most powerful swell: Friday 11 Sep, 3PM (local time) - 3.5ft (1.1m), 8s period, NE swell with 154 kJ wave energy.
Best Forecast Surf Conditions for Armacao this week:
The most powerful waves expected at Armacao in the next 16 days are 1.1m 8s and forecast to arrive on Friday (Sep 11) 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 3.0m 11s period and expected on Saturday (Sep 12) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Fri 11th Sep) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Armacao over the next 16 days.
The Lowdown
Alright, Rusty here. It’s been a tough stretch for surf around here, and I gotta be straight with you: this outlook is a bit of a dry spell. The first solid recommendation doesn’t pop up until the end of the period, so we’re looking at a long gap of nearly two weeks with nothing worth paddling out for.
Let’s start with the big picture. The forecast is pretty grim for the first week and a half. From Tuesday, the 8th of September, right through to the 22nd, there’s a whole lot of nothing. The wind is mostly onshore or cross-onshore, and the swell is tiny, short-period junk. Even when the wind turns clean and offshore, like on the morning of the 15th (SW 10 km/h), there’s no swell to work with. It’s just a flat, sad ocean. The water temperature is sitting at 64.8°F, which is a touch cooler than usual for this time of year (about 1.3°F below average), so not a big deal, but you’ll still want a decent spring suit.
The first real glimmer of hope comes on the morning of Wednesday, the 23rd of September. Armacao will see a small pulse of swell from the ENE at 3.3ft, but with a period of just 6 seconds. That’s weak, short-period windswell, and the combined energy is a low 64 – you’ll be scratching for anything. The wind will be onshore from the NE at 9 mph, which isn’t ideal. The good news? The day before, on the 22nd, we had clean offshore winds, so the water might be a little less messy, but it’s still not a standout. There’s no real “best on offer” here; it’s more of a “maybe you can get a few close-out walls if you’re desperate.” For a beginner, that 3.3ft is fine, but the short period and onshore wind will make it bumpy.
If you’re aching for something, the afternoon of Saturday the 12th had a tiny 2.0ft swell from the ENE with a 9-second period and clean cross-offshore winds from the S at 22 mph. The combined energy was only 59 – weak. That’s a distant memory, but it shows the pattern: the only clean moments come with no swell or with a flat ocean.
Look, I don’t want to sugarcoat it. For the next two weeks, save your wax and your energy. The forecasts can change, but right now, this is a blank run. A break like Armacao, which is fairly exposed, can get a little something when the wind is right, but it’s not happening this time. For the few days around the 21st and 22nd, we see some strong offshore winds (SW 16 mph on the 21st afternoon, SSW 9 mph on the 22nd morning), but no swell to match. It’s just a clean, empty ocean.
Hang in there, mate. Sometimes the ocean just takes a holiday.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 24°C on Fri morning, min 16°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 53mm), heaviest during Fri afternoon. Warm (max 23°C on Fri afternoon, min 15°C on Fri night). Winds decreasing (fresh winds from the SSW on Fri night, light winds from the ENE by Sun night). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | E 6 | SE 9 | E 8 | SSE 12 | SSE 12 | E 8 | NNE 4 | SSE 13 | N 2 | NE 8 | ENE 8 | SSE 9 | ENE 9 | SSE 10 | SE 10 | SE 10 | SE 10 | ESE 7 | ESE 8 | ESE 8 |
Wave Graph | ||||||||||||||||||||
31 | 0 | 0 | 0 | 0 | 0 | 21 | 0 | 1 | 154 | 89 | 0 | 59 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-on | cross-on | on | off |
High Tide | 00:19AM0.68m | 1:55PM0.81m | 00:44AM0.77m | 1:59PM0.78m | 1:14AM0.84m | 2:08PM0.75m | 1:45AM0.87m | 2:23PM0.73m | 2:18AM0.87m | 2:40PM0.72m | 2:52AM0.84m | 2:59PM0.70m | ||||||||
Low Tide | 7:27PM0.33m | 7:17AM-0.04m | 7:50PM0.32m | 7:53AM-0.04m | 8:11PM0.31m | 8:25AM-0.00m | 8:27PM0.28m | 8:52AM0.07m | 8:36PM0.25m | 9:13AM0.16m | 8:37PM0.21m | 9:23AM0.25m | 8:42PM0.18m | |||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | |
mm | — | — | — | — | 3 | — | — | — | — | 13 | 1 | — | — | 1 | — | 2 | 25 | 11 | 5 | — |
Temp °C | 20 | 17 | 20 | 21 | 18 | 20 | 21 | 20 | 24 | 23 | 18 | 17 | 17 | 16 | 17 | 17 | 16 | 16 | 17 | 17 |
Feels °C | 17 | 17 | 20 | 21 | 19 | 20 | 22 | 19 | 22 | 22 | 18 | 11 | 11 | 12 | 15 | 15 | 13 | 15 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | E 6 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 | SSE 12 | ENE 8 | E 8 | E 9 | SSE 10 | SE 10 | SE 10 | SE 10 | ESE 7 | ESE 8 | ESE 8 |
45 | 39 | 89 | 119 | 132 | 107 | 109 | 84 | 86 | 26 | 89 | 20 | 37 | 554 | 365 | 296 | 499 | 203 | 240 | 483 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SE 9 | SE 10 | SSE 12 | SSE 12 | SSE 12 | SSE 15 | SSE 13 | SSE 12 | ESE 13 | E 12 | E 12 | ENE 9 | ENE 8 | E 9 | E 9 | ENE 8 | SE 9 | S 9 | SSE 10 |
80 | 88 | 98 | 174 | 125 | 81 | 193 | 116 | 56 | 17 | 3 | 11 | 59 | 24 | 38 | 39 | 24 | 103 | 43 | 31 | |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 7 | SSE 13 | SSE 9 | S 12 | SE 16 | SE 8 | N 5 | SE 13 | ESE 13 | NW 4 | — | — | — | S 13 | SE 12 | E 8 | SSE 9 | SE 11 | SE 9 |
23 | 11 | 34 | 30 | 146 | 66 | 3 | 11 | 7 | 17 | 6 | — | — | — | 28 | 74 | 1 | 26 | 61 | 166 | |
Wind waves Height (m) Direction Period (s) | E 6 | — | — | — | — | — | NNE 4 | — | N 2 | NE 8 | SSE 11 | SSE 9 | SSE 11 | SSE 10 | — | — | — | ENE 7 | — | — |
31 | — | — | — | — | — | 21 | — | 1 | 154 | 23 | 506 | 792 | 1202 | — | — | — | 160 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 42 | 2 | 1 | 19 | 1 | 3 | 2 | 2 | 2 | 3 | 38 | 17 | 68 | 9 | 9 | 42 | 3 | 428 | 2 | 6 |
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.










