Surf Forecasts:
Marlin surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 9AM (local time) - 7ft (2.1m), 8s period, SE swell with 565 kJ wave energy.
Best Forecast Surf Conditions for Marlin this week:
The most powerful waves expected at Marlin in the next 16 days are 2.1m 8s and forecast to arrive on Tuesday (Aug 18) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 7s period and expected on Saturday (Aug 22) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Tue 18th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Marlin over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the outlook for Marlin over the next couple of weeks is a bit of a rough patch. Don't get your hopes up too high just yet.
Looking at the whole picture, we're in for a long, quiet spell. There's really nothing worth paddling out for from Tuesday, August 18th, all the way through to at least Monday, August 24th. The swell is small, the wind is mostly onshore or cross-onshore, and the wave energy is weak. For example, on that first Tuesday, we've got a 7ft swell from the SE, but it's wind-blown and messy with a 16 mph onshore wind, and the combined energy (702) just tells you it's not clean. It's a frustrating stretch of small, choppy junk.
Things start to look a little more interesting right around Wednesday, August 26th. That afternoon, a new S swell starts to show, and while it's small at 3ft, the period is a very long 17 seconds – that's pure groundswell energy. The energy jumps to 609, but the wind is still onshore. By Thursday morning, August 27th, that swell fills in a bit more to 4ft from the S with a period of 18 seconds, and the combined energy is a solid 1129. That's moderate energy and the long period means it will have some push. But – and it's a big but – the wind is cross-onshore, so it's going to be choppy.
The real kicker is that Marlin is an exposed beach break. A long-period S swell like that, with a period over 15 seconds, can be tricky at a beach break – it tends to close out and be a bit too straight. It would be a much better fit for a point or a reef. Because of the cross-onshore wind and the beach break setup, this whole event is probably more interesting for the kite surfers than for us paddle surfers.
So, to sum it up: the first week is a write-off. The second week has a pulse of proper, long-period groundswell from the S, but the wind and the break type are working against it. It's promising, but uncertain. Keep an eye on the forecasts, but don't cancel your plans just yet.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Mon night. Warm (max 25°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat afternoon, min 22°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 8 | SE 8 | ESE 7 | SE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | E 6 | E 6 | E 6 | SE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 515 | 565 | 528 | 398 | 430 | 400 | 322 | 242 | 232 | 202 | 208 | 145 | 86 | 99 | 57 | 79 | 67 | 50 | 50 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | on | on | on | cross-on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | on |
High Tide | 7:00AM1.77m | 7:18PM1.65m | 7:46AM1.58m | 8:05PM1.51m | 8:49AM1.42m | 9:13PM1.39m | 10:25AM1.34m | 10:54PM1.37m | 12:08PM1.39m | 00:21AM1.46m | 1:10PM1.52m | 1:15AM1.61m | |||||||
Low Tide | 00:46AM0.45m | 1:09PM0.55m | 1:29AM0.59m | 1:54PM0.72m | 2:28AM0.71m | 3:04PM0.85m | 4:06AM0.78m | 4:58PM0.88m | 5:49AM0.73m | 6:24PM0.80m | 6:54AM0.60m | 7:16PM0.67m | |||||||
 |  | |  | | | |  | |  |  | | | | | | | | | |
 | — | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — |
 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — | — | 5:25 | — |
mm | 8 | 2 | 1 | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 23 | 22 | 23 | 23 | 24 | 25 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 24 | 26 | 25 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 13 | S 12 | SE 8 | SE 9 | SE 8 | SE 8 | SSE 9 | SE 8 | SE 8 | ESE 8 | ESE 8 | SE 8 | ESE 8 | SE 8 | ESE 7 | SE 8 | E 6 | E 6 |
| kJ | 93 | 89 | 137 | 398 | 430 | 400 | 322 | 129 | 232 | 70 | 208 | 145 | 86 | 99 | 57 | 35 | 28 | 50 | 20 |
Swell 2 Height (m) Direction Period (s) | SE 11 | S 11 | ESE 10 | S 11 | S 11 | S 10 | S 10 | SE 12 | S 12 | S 9 | S 12 | SE 12 | SSE 11 | ENE 7 | S 10 | S 12 | S 10 | SE 7 | S 9 |
| kJ | 29 | 38 | 10 | 114 | 57 | 50 | 28 | 6 | 3 | 2 | 3 | 6 | 11 | 15 | 2 | 3 | 2 | 25 | 2 |
Swell 3 Height (m) Direction Period (s) | — | ESE 10 | SE 12 | — | — | — | SE 13 | S 13 | S 14 | S 13 | S 12 | SE 12 | — | S 11 | S 12 | S 10 | — | S 10 | — |
| kJ | — | 10 | 6 | — | — | — | 7 | 3 | 4 | 3 | 3 | 5 | — | 2 | 3 | 2 | — | 2 | — |
Wind waves Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | — | — | — | — | ESE 7 | E 8 | ESE 8 | ENE 6 | — | ENE 7 | ENE 7 | ENE 7 | E 6 | E 6 | — | SE 7 |
| kJ | 515 | 565 | 528 | — | — | — | — | 242 | 117 | 202 | 28 | — | 26 | 75 | 48 | 79 | 67 | — | 50 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 904 | 904 | 904 | 315 | 315 | 925 | 338 | 324 | 925 | 315 | 157 | 1308 | 338 | 154 | 2954 | 338 | 992 | 992 | 324 |
Best forecast wave conditions in Bahia - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marlin surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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