Surf Forecasts:
Prainha surf forecast from 10 Jul 2026:
- Best quality surf: Friday 10 Jul, 9PM (local time) - 3ft (0.9m), 14s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 12 Jul, 9PM (local time) - 6ft (1.8m), 12s period, SE swell with 887 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 9AM (local time) - 1.5ft (0.4m), 14s period with ESE 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 Friday (Jul 10) at 9AM. The primary swell is predicted to be 0.4m and 14s period with a secondary swell of 0.4m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 1.8m 12s and forecast to arrive on Sunday (Jul 12) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Thursday (Jul 16) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Fri 10th Jul) | 1.5ft (0.4m) 14s |
| Best Surf | 9PM (Fri 10th Jul) | 3ft (0.9m) 14s |
| Most Powerful | 9PM (Sun 12th Jul) | 6ft (1.8m) 12s |
Table - best surf conditions forecast for Prainha over the next 16 days.
Alright folks, Rusty here. Let's have a look at what's on the cards for the next couple of weeks.
Well, honestly, mate, it's a pretty flat and quiet run ahead. There are no proper standouts to get genuinely excited about. The whole 16-day window is looking like a long stretch of small, ordinary waves. We're talking about a solid 16 days with nothing that really qualifies as a solid session, so you’re looking at a long gap of marginal conditions.
The only real option on the table is Prainha. It's an advanced wave, and it's been consistent, so it will have waves, but they are going to be small. The water temp is sitting at 64°, which is about 1° cooler than usual for this time of year, so pretty average really.
Let's walk through it. Starting Friday July 10th, we get a tiny 1 ft swell from the ESE with a period of 14 seconds. The combined energy is weak (119), and it's clean with a light offshore WSW breeze, but it's just too small to do much with. Saturday July 11th is a bit bigger at 3 ft, still from the ESE, but the wind is a light cross-shore all day, which isn't ideal. The combined energy is moderate (273), but the conditions are just marginal.
Sunday July 12th is much the same—3 ft to 3 ft, clean in the morning with a light offshore, but nothing special. The energy is still moderate (197 to 320). Monday July 13th sees a jump in size to 5 ft from the SSE, but the period drops to a short 8 seconds, and with a moderate cross-shore wind, it's going to be a messy, poor surf day. That one is a write-off.
The rest of the week and into the next is a rinse and repeat of small surf. Mornings on the 14th, 15th, 16th, 17th, and 18th offer clean conditions with glassy or light offshore winds, but the swell is consistently between 2 ft and 3 ft. The combined energy barely gets into the moderate range (100 to 150). It’s there, but it’s not worth a paddle out unless you’re desperate.
Looking further out, the 22nd sees a morning with 4 ft of short-period (7 seconds) SSE swell and glassy conditions, but the energy is still only moderate (194). And the 25th has a 3 ft to 4 ft SE swell, also with a short period, under a light cross-offshore breeze. Again, it’s surfable, but very ordinary.
Keep your expectations low, lads. There's nothing to chase here for the next two weeks.
Rusty out.
Short Range ForecastModerate rain (total 16mm), heaviest on Sat night. Warm (max 21°C on Sun afternoon, min 15°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Tue afternoon, min 12°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||||
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) | ESE 14 | ESE 12 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | SE 12 | SSE 8 | SE 11 | SE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 9 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 78 | 136 | 285 | 273 | 269 | 242 | 172 | 260 | 403 | 303 | 121 | 122 | 65 | 79 | 110 | 106 | 132 | 108 | 120 | 141 | 142 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | glassy | cross | cross | cross | off | cross-off | cross | cross | cross | cross-off | off | cross-on | cross | off | cross-on | cross-off | glassy | cross-on | cross-on |
High Tide | 11:59AM1.17m | 00:18AM0.98m | 1:02PM1.26m | 1:09AM1.01m | 1:57PM1.34m | 1:54AM1.05m | 2:45PM1.37m | 2:34AM1.10m | 3:30PM1.36m | 3:13AM1.15m | 4:11PM1.31m | 3:50AM1.19m | 4:49PM1.23m | ||||||||
Low Tide | 7:38PM0.40m | 7:11AM0.32m | 8:28PM0.40m | 7:43AM0.22m | 9:11PM0.43m | 8:08AM0.14m | 9:42PM0.49m | 8:31AM0.08m | 9:39PM0.56m | 8:57AM0.04m | 9:10PM0.57m | 9:25AM0.05m | 9:24PM0.54m | ||||||||
 |  |  | | | |  | |  | | | | | |  | | | | | | | |
 | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — |
 | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — |
mm | — | 1 | 4 | — | 2 | 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 16 | 17 | 17 | 17 | 19 | 21 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 16 | 17 | 17 | 18 |
Feels °C | 20 | 17 | 15 | 17 | 16 | 18 | 19 | 18 | 13 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 12 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 12 | ESE 12 | SE 12 | SE 8 | SE 11 | SE 10 | SE 10 | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 9 | E 8 |
| kJ | 41 | 136 | 285 | 273 | 269 | 242 | 172 | 260 | 403 | 71 | 121 | 122 | 65 | 79 | 110 | 106 | 119 | 108 | 120 | 141 | 142 |
Swell 2 Height (m) Direction Period (s) | ESE 14 | ESE 15 | SE 3 | — | — | — | SE 8 | SE 19 | SE 10 | ESE 12 | SSE 10 | E 8 | ESE 7 | ESE 9 | ESE 9 | S 10 | SE 9 | ENE 5 | SE 10 | SE 11 | ESE 10 |
| kJ | 78 | 44 | 2 | — | — | — | 10 | 15 | 4 | 121 | 72 | 33 | 30 | 30 | 7 | 2 | 132 | 17 | 28 | 18 | 71 |
Swell 3 Height (m) Direction Period (s) | ENE 4 | ENE 4 | — | — | — | S 14 | SE 20 | SE 7 | — | — | ESE 8 | E 8 | E 7 | E 9 | — | — | — | SE 11 | SE 10 | — | SE 10 |
| kJ | 1 | 1 | — | — | — | 4 | 15 | 45 | — | — | 20 | 1 | 1 | 2 | — | — | — | 20 | 47 | — | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSE 7 | SSE 8 | SSE 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 359 | 303 | 37 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 91 | 0 | 4 | 4 | 52 | 0 | 33 | 61 | 61 | 129 | 0 | 0 | 73 | 4 | 0 | 73 | 0 | 0 | 73 | 4 |
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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