Surf Forecasts:
Prainha surf forecast from 30 Jul 2026:
- Best quality surf: Sunday 2 Aug, 3AM (local time) - 3.5ft (1.0m), 7s period, E swell with glassy winds.
- Most powerful swell: Wednesday 5 Aug, 3AM (local time) - 4.5ft (1.3m), 6s period, S swell with 130 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 3AM (local time) - 3.5ft (1.0m), 7s 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 Sunday (Aug 02) at 3AM. The primary swell is predicted to be 1.0m and 7s period with a secondary swell of 0.1m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 1.3m 6s and forecast to arrive on Wednesday (Aug 05) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Wednesday (Aug 05) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 2nd Aug) | 3.5ft (1.0m) 7s |
| Best Surf | 3AM (Sun 2nd Aug) | 3.5ft (1.0m) 7s |
| Most Powerful | 3AM (Wed 5th Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Righto, grab a seat. It's Rusty here, and I've gotta be straight with you – this outlook for the next 16 days is a tough one. We're looking at a long stretch of flat-to-weak conditions, so you'll need to pick your moments very carefully.
The forecast kicks off on Thursday, July 30th with nothing doing – barely a ripple. The first real chance that's even worth a mention comes on the morning of Sunday, August 2nd. Prainha will see some weak 0.9ft easterly swell with a short period of 7 seconds. The wind will be a clean cross-off from the SSW, giving us some shape, but the wave energy is weak (83). It's surfable, but only just. The water temperature is a touch warmer than normal for the time of year at 67°.
Monday, August 3rd, we're back to near-flat conditions, and that pattern drags on for the entire first week. There's a long gap with no real standouts.
We finally see a pulse of energy arrive on Friday morning, August 7th. The swell lifts to 4ft from the SE with a period of 7 seconds, and with a light, glassy NW wind, it'll be clean. The combined energy jumps to a moderate 169, so there's a bit more push. It's still not great, but it's the best we've seen.
The morning of Saturday, August 8th, offers a little more. A 2ft SE swell with a long, clean period of 11 seconds from the NNW wind makes it glassy, and the energy is moderate at 123. That long period will give the waves some extra grunt.
A bit further out, on Monday morning, August 10th, we see a blip of energy – a 2ft SE swell with a very long period of 14 seconds and a moderate 205 energy rating, but the cross-shore wind will make it lumpy. The period is long enough that it'll break straight at Prainha, which is a beach break, so not ideal.
Honestly, the best you can say is that the morning of Friday, August 14th looks promising. We've got a glassy 2ft easterly swell with a clean 8-second period and a light westerly wind. The energy is weak at 55, but it'll be clean and rideable. It's a long way off, so take it with a grain of salt, but it's the standout of a very flat period.
This is a tough run. Keep your expectations low and your eyes on the glassy windows. The local break is Prainha, and you won't need to worry about crowds with this kind of consistency.
- Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Fri night, min 17°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 23mm), heaviest during Wed morning. Warm (max 21°C on Tue morning, min 16°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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 5 | SE 10 | E 7 | E 7 | ENE 4 | E 5 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5 | 4 | 8 | 6 | 15 | 19 | 72 | 79 | 81 | 85 | 69 | 39 | 38 | 38 | 51 | 50 | 45 | 41 | 43 | 41 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | cross-on | cross-on | glassy | on | cross | cross-off | cross | cross-off | glassy | on | cross | glassy | cross | cross | cross-off | cross-off | cross-off |
High Tide | 3:49PM1.33m | 3:42AM1.32m | 4:25PM1.31m | 4:20AM1.32m | 5:03PM1.27m | 5:00AM1.28m | 5:44PM1.20m | 5:45AM1.21m | 6:29PM1.10m | 6:39AM1.12m | 7:21PM0.99m | 7:46AM1.04m | 8:25PM0.89m | |||||||
Low Tide | 9:04PM0.36m | 9:22AM0.01m | 9:27PM0.33m | 9:51AM0.03m | 9:56PM0.33m | 10:23AM0.08m | 10:29PM0.34m | 10:57AM0.17m | 11:05PM0.37m | 11:36AM0.30m | 11:46PM0.41m | 12:22PM0.46m | 00:35AM0.47m | |||||||
 |  | |  | | | |  | | |  | | | | |  |  |  | | | |
 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — |
 | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 19 | 13 | — |
Temp °C | 17 | 18 | 17 | 18 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 18 | 21 | 19 | 17 | 16 | 16 | 16 |
Feels °C | 17 | 19 | 18 | 17 | 17 | 18 | 18 | 17 | 16 | 16 | 18 | 20 | 18 | 18 | 21 | 18 | 16 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 7 | E 7 | SSE 12 | E 5 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 |
| kJ | 16 | 9 | 8 | 4 | 13 | 19 | 72 | 79 | 81 | 85 | 69 | 39 | 38 | 38 | 51 | 50 | 45 | 41 | 43 | 41 |
Swell 2 Height (m) Direction Period (s) | SE 5 | SSE 4 | SE 5 | SSE 5 | E 7 | SE 9 | SE 10 | SSE 10 | S 10 | S 10 | S 4 | — | E 12 | ESE 11 | SE 12 | SE 12 | SE 11 | SSE 5 | SSE 5 | SE 6 |
| kJ | 4 | 2 | 1 | 3 | 3 | 3 | 4 | 9 | 2 | 2 | 3 | — | 3 | 13 | 23 | 22 | 19 | 18 | 16 | 11 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 13 | SE 13 | SE 5 | SE 11 | S 10 | — | — | — | — | — | SE 15 | SE 13 | SE 11 | SE 11 | ESE 10 | SE 11 | SE 10 | SE 10 |
| kJ | 5 | 4 | 7 | 6 | 1 | 4 | 8 | — | — | — | — | — | 9 | 7 | 18 | 18 | 10 | 18 | 16 | 15 |
Wind waves Height (m) Direction Period (s) | — | — | ESE 5 | ENE 4 | ENE 4 | — | — | — | — | S 3 | — | — | — | — | — | SE 2 | SSE 5 | S 6 | — | — |
| kJ | — | — | 5 | 3 | 15 | — | — | — | — | 5 | — | — | — | — | — | 1 | 37 | 50 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 74 | 140 | 140 | 249 | 61 | 61 | 73 | 4 | 0 | 128 | 0 | 33 | 73 | 4 | 0 | 126 | 100 | 126 | 28 | 0 |
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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