Surf Forecasts:
Armacao surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 6PM (local time) - 6ft (1.9m), 9s period, NE swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 9PM (local time) - 7ft (2.1m), 9s period, NE swell with 657 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 6PM (local time) - 6ft (1.9m), 9s period with NE swell.
Best Forecast Surf Conditions for Armacao this week:
The surf forecast for Armacao over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 6PM. The primary swell is predicted to be 1.9m and 9s period with a secondary swell of 1.1m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Armacao in the next 16 days are 2.1m 9s and forecast to arrive on Monday (Aug 17) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Saturday (Aug 15) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 18th Aug) | 6ft (1.9m) 9s |
| Best Surf | 6PM (Tue 18th Aug) | 6ft (1.9m) 9s |
| Most Powerful | 9PM (Mon 17th Aug) | 7ft (2.1m) 9s |
Table - best surf conditions forecast for Armacao over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what Armação has on offer over the next couple of weeks. Gotta be straight with you – this stretch is looking pretty quiet. We’ve got a long run of days where the ocean just isn't cooperating, so don't get your hopes up too high just yet.
We’re looking at a significant gap with no real surf to speak of right from the start. It’s not until the afternoon of Sunday, 16 August that we finally see a pulse of energy, with a 6 ft swell rolling in from the ENE (period of 8 seconds). Combined energy hits 327 (moderate), but the problem is the wind. It's a cross-onshore breeze at 16 mph, making for choppy, bumpy conditions. That’s not what we want.
The following week stays pretty poor. Monday the 17th has a brief window of a 5 ft ENE swell, but again onshore winds ruin it. By Tuesday the 18th, we see the biggest swell of the whole outlook – a 6 ft NE swell pushing the combined energy up to 511 (strong). But the wind stays stubbornly cross-onshore from the north at 12 mph. For an intermediate spot like Armação, that 6 ft with poor wind is messy and hard to control.
We then hit another dead zone. From Wednesday the 19th through to the end of the month, the swell just vanishes. There are a few glassy mornings here and there – Friday the 21st, Saturday the 29th, Sunday the 30th – but with no waves to ride, it’s just flat calm. You'll see clean conditions with offshore or even glassy winds, but no swell to go with it. The only exception is the evening of Friday, 28 August, which shows a small 5 ft ENE swell (7 seconds) and a combined energy of 197 (moderate). The wind is clean and cross-offshore, but it’s a one-off, and the swell period is short.
Water temp is sitting at 66°F, which is just about average for this time of year at Armação. Nothing to write home about there.
So what’s the call? The Tuesday, 18 August afternoon has the most size, but it’s chopped up. If you’re determined to paddle out and don't mind the bump, it’ll be the only option with any power. Cleaner but smaller is the Friday, 28 August afternoon, which is the pick for a cleaner but much weaker session.
Honestly, this is one of those stretches where you’re probably better off waiting for a change in the forecast. For kitesurfers, the consistent cross-offshore winds on the 22nd, 23rd, and 24th might offer something, but for paddle surfing, it’s a tough read. Hang in there, folks.
- Rusty
Short Range ForecastHeavy rain (total 23mm), heaviest during Sat morning. Warm (max 22°C on Mon morning, min 17°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 19°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | E 7 | E 8 | E 8 | NE 8 | ENE 8 | ENE 8 | NNW 3 | ENE 8 | NE 9 | N 4 | NE 9 | E 9 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | E 7 | SSE 9 | SSE 9 |
Wave Graph | |||||||||||||||||||||
0 | 0 | 0 | 375 | 339 | 421 | 2 | 262 | 594 | 22 | 471 | 0 | 0 | 0 | 0 | 0 | 85 | 60 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | glassy | cross | glassy |
High Tide | 3:24PM0.69m | 3:09AM0.83m | 3:42PM0.67m | 3:45AM0.78m | 4:02PM0.65m | 4:23AM0.71m | 4:23PM0.62m | 5:07AM0.63m | 4:43PM0.59m | 6:06AM0.54m | 12:41PM0.53m | 11:51PM0.34m | 12:28PM0.60m | ||||||||
Low Tide | 9:55AM0.08m | 9:24PM0.34m | 10:15AM0.18m | 9:07PM0.30m | 10:18AM0.28m | 9:18PM0.27m | 9:49AM0.36m | 9:43PM0.26m | 9:34AM0.42m | 10:13PM0.29m | 9:13AM0.48m | 2:40PM0.52m | 10:48PM0.34m | ||||||||
6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | |
— | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | |
mm | 13 | 7 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 18 | 19 | 20 | 19 | 22 | 22 | 19 | 26 | 26 | 21 | 21 | 19 | 19 | 23 | 23 | 22 | 20 | 19 | 17 |
Feels °C | 18 | 19 | 18 | 19 | 19 | 18 | 20 | 20 | 19 | 25 | 26 | 22 | 22 | 17 | 19 | 22 | 22 | 19 | 20 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 10 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 8 | E 8 | E 8 | E 8 | SSE 7 | ENE 8 | E 7 | SSE 9 | SSE 9 |
251 | 292 | 279 | 234 | 198 | 201 | 230 | 10 | 281 | 222 | 232 | 151 | 115 | 84 | 61 | 61 | 9 | 60 | 52 | 108 | 88 | |
Swell 2 Height (m) Direction Period (s) | SSE 12 | SSE 11 | SSE 11 | SSE 10 | SE 10 | SSE 10 | SE 10 | — | SE 11 | S 10 | S 10 | S 9 | S 9 | E 13 | S 4 | SSE 7 | SSE 10 | SSE 8 | SSE 6 | E 8 | E 8 |
243 | 154 | 103 | 72 | 50 | 40 | 25 | — | 4 | 2 | 2 | 2 | 1 | 4 | 1 | 16 | 18 | 14 | 10 | 57 | 69 | |
Swell 3 Height (m) Direction Period (s) | — | E 16 | E 15 | E 14 | ESE 13 | E 13 | — | — | SE 8 | — | SE 8 | E 13 | SE 8 | SE 13 | S 7 | SSE 11 | E 12 | SSE 6 | S 8 | — | S 20 |
— | 5 | 4 | 15 | 18 | 13 | — | — | 3 | — | 3 | 4 | 2 | 7 | 4 | 11 | 3 | 4 | 5 | — | 8 | |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | — | NE 8 | ENE 8 | ENE 8 | NNW 3 | ENE 8 | NE 9 | N 4 | NE 9 | — | — | SSE 3 | S 3 | — | ENE 8 | NW 4 | S 5 | — | — |
474 | 588 | — | 375 | 339 | 421 | 2 | 262 | 594 | 22 | 471 | — | — | 4 | 4 | — | 85 | 7 | 29 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 36 | 3 | 2 | 3 | 241 | 62 | 19 | 46 | 27 | 62 | 3 | 1 | 1 | 41 | 1 | 2 | 241 | 4 | 19 | 32 | 2 |
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.











