
Surf Forecasts:
Marlin surf forecast from 12 Aug 2026:
- Best quality surf: Friday 14 Aug, 6AM (local time) - 4ft (1.2m), 13s period, S swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 9PM (local time) - 4.5ft (1.3m), 14s period, S swell with 663 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 6AM (local time) - 4ft (1.2m), 13s period with S swell.
Best Forecast Surf Conditions for Marlin this week:
The surf forecast for Marlin over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 14) at 6AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 1.0m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Marlin in the next 16 days are 1.3m 14s and forecast to arrive on Thursday (Aug 13) at 9PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 14th Aug) | 4ft (1.2m) 13s |
| Best Surf | 6AM (Fri 14th Aug) | 4ft (1.2m) 13s |
| Most Powerful | 9PM (Thu 13th Aug) | 4.5ft (1.3m) 14s |
Table - best surf conditions forecast for Marlin over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. Look, I’ll be straight with you – this 16-day window is a tough one for Marlin. The wind is a persistent problem, and the wave quality never really locks in. We’ve got a long stretch of poor conditions, so don’t get your hopes up too high just yet.
Things start off rough. From Wednesday the 12th right through the weekend, we’ve got rain showers and a persistent cross-onshore wind. The swell is there, with a solid S’ly groundswell showing up with a period of 14 seconds on the 12th and 17 seconds later that afternoon, which is that nice long-period energy. The combined energy is moderate to strong (376 and 552), but that wind just ruins it. The surface gets chopped up, and the lines are messy. It’s a write-off.
We get a slight reprieve by Friday the 14th. The wind eases to a light breeze, and the swell still has some S’ly groundswell in the mix with a period of 13 seconds. The combined energy is still strong (656). The morning is marginal, but it’s the best we’ve seen. The swell is around 4 feet, and with that lighter wind, the cross-onshore might just let a few clean ones slip through. It’s not a standout, but it’s the only window worth paddling out for.
From Saturday the 15th onward, it’s a real struggle. The wind stays onshore or cross-onshore, the swell mixes up, and the period drops significantly. By Tuesday the 18th, the swell bumps up to 6 feet but it’s short-period, wind-affected slop at 8 seconds. The combined energy is moderate (493), but it’s a lumpy, messy affair. The water temperature is about average for this time of year, nothing to write home about.
The second week is a dead zone. The swell drops right off, with a 16-day gap from about the 20th onwards where the guidance flags everything as poor. The energy drops to weak levels (63-65) by the 26th. There’s a brief spike of long-period S’ly swell on the 22nd with a period of 16-18 seconds, giving a combined energy of 884, but that wind is still cross-onshore and choppy. It’s a tease.
Honestly, Marlin needs a good offshore wind to make the most of that S’ly swell, and we’re not getting it. The best bet is Friday morning, the 14th of August. It’s the only time the wind drops enough to make the surf even marginal. Otherwise, this is a blank run. It’s a tough stretch for the area, but it won’t stay this way forever. Keep an eye on the forecasts.
Rusty.
Short Range ForecastHeavy rain (total 43mm), heaviest during Tue night. Warm (max 26°C on Wed morning, min 23°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Mon morning. Warm (max 26°C on Sat morning, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | S 16 | S 14 | S 17 | SSE 8 | SSE 7 | SSE 7 | S 13 | S 13 | S 12 | S 12 | S 13 | ESE 12 | S 16 | S 14 | S 13 | S 13 | S 12 | S 12 | ESE 6 |
Wave Graph | |||||||||||||||||||
181 | 191 | 283 | 581 | 276 | 198 | 511 | 480 | 305 | 239 | 284 | 293 | 596 | 577 | 430 | 335 | 232 | 180 | 162 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on |
High Tide | 3:06AM2.20m | 3:40PM2.13m | 3:48AM2.29m | 4:19PM2.15m | 4:27AM2.31m | 4:56PM2.12m | 5:06AM2.26m | 5:31PM2.04m | 5:43AM2.13m | 6:05PM1.93m | 6:21AM1.97m | 6:40PM1.80m | |||||||
Low Tide | 9:02PM0.23m | 9:29AM-0.06m | 9:42PM0.17m | 10:09AM-0.08m | 10:20PM0.14m | 10:48AM-0.03m | 10:56PM0.17m | 11:24AM0.07m | 11:32PM0.23m | 11:59AM0.21m | 00:08AM0.33m | 12:33PM0.38m | 00:46AM0.45m | ||||||
— | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:43 | — | — | 5:41 | — | — | 5:41 | — | — | |
— | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | |
mm | 14 | 3 | 5 | 14 | 5 | 1 | — | 1 | — | — | — | — | 1 | — | — | 1 | 3 | 3 | 17 |
Temp °C | 24 | 26 | 25 | 24 | 24 | 25 | 24 | 25 | 25 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 24 |
Feels °C | 24 | 26 | 26 | 24 | 23 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 14 | ESE 7 | S 14 | E 8 | ESE 8 | S 13 | S 13 | S 12 | ESE 9 | S 13 | ESE 12 | ESE 13 | S 14 | S 13 | S 13 | S 12 | S 12 | S 11 |
181 | 191 | 153 | 306 | 118 | 112 | 511 | 480 | 305 | 126 | 284 | 293 | 440 | 577 | 430 | 335 | 232 | 180 | 93 | |
Swell 2 Height (m) Direction Period (s) | ESE 9 | SE 11 | S 8 | S 14 | S 13 | S 12 | ESE 8 | ESE 8 | ESE 8 | S 12 | ESE 9 | S 13 | S 16 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 11 | S 8 |
8 | 5 | 116 | 294 | 212 | 107 | 146 | 119 | 120 | 239 | 103 | 212 | 596 | 203 | 196 | 143 | 105 | 65 | 34 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | S 17 | — | ESE 10 | S 15 | — | S 18 | S 16 | S 15 | ESE 11 | SSE 18 | — | — | — | — | — | ESE 11 | — |
5 | 5 | 283 | — | 18 | 112 | — | 57 | 186 | 218 | 71 | 102 | — | — | — | — | — | 65 | — | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | — | SSE 8 | SSE 7 | SSE 7 | — | — | — | — | — | — | — | ESE 5 | ESE 6 | E 6 | ESE 6 | ESE 6 | ESE 6 |
129 | 175 | — | 581 | 276 | 198 | — | — | — | — | — | — | — | 48 | 52 | 80 | 58 | 62 | 162 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 952 | 952 | 992 | 316 | 315 | 904 | 57 | 66 | 992 | 354 | 157 | 904 | 338 | 817 | 1489 | 324 | 925 | 979 | 904 |
Best forecast wave conditions in Bahia - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Marlin Surf forecast
The above surf forecast table for Marlin provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Marlin can be found by selecting the local surf guide option on the grey menu. Our Marlin 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 (Marlin) 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 Marlin 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.
Are you planning a holiday in Bahia - Norte? If you are looking for accommodation near Marlin, camping, hotels and holiday cottages in Bahia - Norte, consider staying in Conde which is 8 km (5 miles) away. Other places in and around Bahia - Norte where you can find information about places to rent, and car hire include Esplanada which is 44 km (27 miles) away, Rio Real, Estancia and Entre Rios.











