Surf Forecasts:
Prainha surf forecast from 23 Jul 2026:
- Best quality surf: Thursday 23 Jul, 12PM (local time) - 2ft (0.6m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 12AM (local time) - 6ft (1.9m), 8s period, SSE swell with 438 kJ wave energy.
- Next surfable swell (1★+): Thursday 23 Jul, 12PM (local time) - 2ft (0.6m), 8s period with E swell.
Best Forecast Surf Conditions for Prainha this week:
The surf forecast for Prainha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 23) at 12PM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.1m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 1.9m 8s and forecast to arrive on Friday (Jul 24) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 8s period and expected on Friday (Jul 24) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 23rd Jul) | 2ft (0.6m) 8s |
| Best Surf | 12PM (Thu 23rd Jul) | 2ft (0.6m) 8s |
| Most Powerful | 12AM (Fri 24th Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright crew, Rusty here. Let’s break down what’s coming at Prainha for the next couple of weeks. Fair warning – it’s going to be a quiet stretch, so we gotta hunt for the clean windows.
We start off with a tiny, clean window on Thursday morning, July 23rd. Swell is only about 2ft from the east with a short, weak 8-second period. The combined energy is weak (73). The wind is a light offshore from the WSW, so the surface will be clean. It’s surfable, but nothing special. Water temp is 66°, right about normal for this time of year.
The best bet of the whole forecast lands on the morning of Monday, July 27th. It’s not big at all – maybe 2ft from the ESE – but the wind goes dead calm, giving us a glassy, perfect surface. The energy is low at 50, but for a clean, tiny wave session on a longboard, this is your moment. Prainha is an advanced spot, very consistent, and exposed to the swell. It’ll be breaking, even if small. Just be aware, crowds are a possibility.
After that, it’s a long dry spell. From Tuesday, July 28th through to Saturday, August 1st, there’s pretty much nothing worth paddling for. The swell gets even smaller and the wind is either onshore or messy. We get a couple of glassy mornings on July 31st and August 3rd, but the swell is just 2ft with very weak energy.
Looking into the second week, the best chance comes on Friday morning, August 7th. A small 2ft swell from the SE shows up with a slightly longer 10-second period, and a light offshore wind from the WNW will keep it clean. The combined energy hits 129 (moderate), which is the strongest in the whole run. It’s a promising little session, but it’s more than a week out, so keep your expectations in check.
For us paddle surfers, it’s a tough run. With the small swell and onshore winds most afternoons, this exposed beach setup might actually look better for the kite kiters than for us.
Stay tuned to those morning glass-offs, and I’ll see you out there.
- Rusty
Short Range ForecastMostly dry. Warm (max 23°C on Thu morning, min 16°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sun afternoon. Warm (max 20°C on Tue morning, min 17°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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 8 | E 8 | SSE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 9 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 66 | 49 | 438 | 73 | 76 | 78 | 76 | 95 | 97 | 79 | 48 | 45 | 46 | 47 | 42 | 28 | 27 | 26 | 18 | 19 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-off | cross-off | cross | glassy | cross | on | cross | cross | cross-on | cross-on | glassy | on | cross | glassy | cross-on | glassy | cross | on | cross-off |
High Tide | 10:17AM0.93m | 10:25PM0.85m | 11:34AM0.99m | 11:33PM0.90m | 12:35PM1.08m | 00:28AM0.97m | 1:22PM1.16m | 1:14AM1.06m | 2:02PM1.24m | 1:54AM1.15m | 2:38PM1.29m | 2:30AM1.23m | 3:14PM1.32m | ||||||||
Low Tide | 6:26PM0.63m | 5:56AM0.45m | 7:10PM0.56m | 6:41AM0.35m | 7:43PM0.51m | 7:15AM0.26m | 8:08PM0.46m | 7:44AM0.18m | 8:26PM0.43m | 8:09AM0.12m | 8:36PM0.41m | 8:33AM0.06m | 8:47PM0.38m | ||||||||
 |  |  | | |  | | |  | |  |  | | | | | | |  | |  | |
 | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | 1 | 1 | — | 12 |
Temp °C | 23 | 19 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 18 | 19 | 19 | 19 | 20 | 19 | 19 | 22 | 21 | 18 |
Feels °C | 23 | 18 | 15 | 16 | 17 | 19 | 18 | 18 | 19 | 17 | 19 | 19 | 20 | 19 | 20 | 21 | 20 | 21 | 24 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | SE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ENE 6 | ENE 7 | E 8 |
| kJ | 66 | 49 | 129 | 73 | 76 | 78 | 76 | 95 | 97 | 79 | 48 | 45 | 46 | 47 | 42 | 28 | 27 | 26 | 14 | 15 | 32 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SSE 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | ENE 4 | ENE 4 | ENE 7 | ENE 6 | ENE 6 | E 6 | SE 8 | SE 9 | ESE 8 |
| kJ | 5 | 25 | 34 | 32 | 19 | 18 | 18 | 18 | 18 | 10 | 10 | 9 | 1 | 1 | 9 | 13 | 13 | 12 | 18 | 19 | 7 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 8 | — | — | — | — | — | SE 14 | SE 15 | SE 13 | SSE 12 | ENE 3 | E 7 | E 7 | — | SE 13 | SE 12 | S 12 | S 11 | S 11 | S 10 |
| kJ | 2 | 5 | — | — | — | — | — | 7 | 33 | 27 | 14 | 1 | 4 | 4 | — | 7 | 6 | 3 | 2 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | SE 2 | SSE 8 | — | — | — | — | — | — | — | — | NE 3 | — | SSE 2 | S 3 | — | — | — | — | — | — |
| kJ | — | 2 | 438 | — | — | — | — | — | — | — | — | 2 | — | 1 | 2 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 100 | 61 | 0 | 59 | 0 | 4 | 73 | 4 | 4 | 4 | 4 | 0 | 73 | 11 | 11 | 128 | 11 | 61 | 73 | 52 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Prainha Surf forecast
The above surf forecast table for Prainha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Prainha can be found by selecting the local surf guide option on the grey menu. Our Prainha 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 (Prainha) 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 Prainha 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.
Prainha is 14 km (9 miles) from Sao Francisco do Sul. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Sao Francisco do Sul. Sao Francisco do Sul has rooms for a wide range of budgets as well as car hire and transport links.
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