Surf Forecasts:
Barron Rivermouth surf forecast from 27 Aug 2026:
- Best quality surf: Saturday 29 Aug, 2AM (local time) - 3.5ft (1.1m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 5AM (local time) - 4.5ft (1.3m), 16s period, SW swell with 813 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 2AM (local time) - 1.5ft (0.5m), 15s period with SW swell.
Best Forecast Surf Conditions for Barron Rivermouth this week:
The surf forecast for Barron Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 2AM. The primary swell is predicted to be 0.5m and 15s period with a secondary swell of 0.6m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Barron Rivermouth in the next 16 days are 1.3m 16s and forecast to arrive on Saturday (Aug 29) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (MST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 27th Aug) | 1.5ft (0.5m) 15s |
| Best Surf | 2AM (Sat 29th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 5AM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Barron Rivermouth over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s talk about what’s happening at Barron Rivermouth. This is a point-river break that needs a proper SW groundswell to show its best, and it’s fairly consistent when it gets the right angle. The water is sitting at 89°F right now, which is a touch warmer than normal for this time of year, so you’ll be comfortable out there.
The first few days are a write-off. Wednesday the 26th and Thursday the 27th are small and choppy with cross-onshore winds. Swell is only 2ft to 2ft from the SW, energy is weak at 169, and the conditions are poor. Not worth paddling out.
Friday the 28th shows a slight bump. Morning brings 3ft SW swell, still cross-onshore and marginal. The afternoon looks a little more interesting with 4ft SW swell, a light onshore wind, and the energy jumping to 715. The wind's not ideal, but it’s the first sign of something moving.
Saturday the 29th is the real standout for the first week. Saturday morning we have glassy conditions, 3 mph offshore wind, and 4ft SW swell with a 16-second period. The energy is solid at 797. This is a long-period groundswell, and the glassy surface will make for clean, well-shaped waves at the rivermouth. The wind is offshore from the SSW, which is perfect for this break. Expect very good surf conditions. This is the best session of the whole forecast.
Sunday the 30th morning is still decent with 4ft SW swell, a light onshore wind, and marginal conditions. The afternoon gets choppy again. From Monday the 31st through to Wednesday the 2nd of September, it drops back to small, poor surf with cross-onshore winds and weak energy.
Thursday the 3rd of September sees a new pulse: 3ft SW swell but with a 18-second period. The morning is cloudy with a cross-shore wind, but Thursday afternoon turns glassy with a light NW breeze. The energy is up at 650. That’s another very good session with clean, long-period groundswell hitting the rivermouth.
Friday the 4th of September morning is also a standout. Glassy conditions, 4ft SW swell at 17 seconds, and energy hitting 915. This is the biggest energy of the whole outlook, and the wind is light offshore from the south. Expect very good surf again. The afternoon gets choppy, so make it a morning mission.
The weekend of the 5th and 6th is marginal, with smaller swell and cross-onshore winds. Monday the 7th morning has a clean cross-offshore wind and 2ft SW swell, which is good but small. Tuesday the 8th morning is glassy again with 2ft SW swell and a long 18-second period, offering clean little waves for the patient surfer.
From Wednesday the 9th through to the end of the forecast on Thursday the 10th, it’s back to poor and marginal conditions with cross-onshore winds and smaller swell. The energy drops below 600.
Bottom line: Saturday 29th August morning, Thursday 3rd September afternoon, and Friday 4th September morning are the sessions to target. The best of the lot is Saturday morning—glassy, clean, and a lovely SW groundswell rolling in.
Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Fri night. Warm (max 32°C on Wed afternoon, min 28°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat night. Warm (max 31°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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) | SW 15 | SW 15 | WSW 15 | SW 18 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 10 | SW 10 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 109 | 104 | 142 | 194 | 208 | 314 | 671 | 667 | 560 | 539 | 479 | 736 | 453 | 271 | 188 | 176 | 117 | 132 | 119 | 166 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | glassy | cross-on | on | glassy | glassy | cross-on | glassy | on | cross-on | cross-off | on | cross-on | off | cross-on | cross-on | cross-off |
High Tide | 7:37PM1.70m | 8:43AM1.49m | 8:09PM1.72m | 9:00AM1.55m | 8:40PM1.70m | 9:18AM1.60m | 9:13PM1.64m | 9:37AM1.64m | 9:47PM1.52m | 9:58AM1.66m | 10:24PM1.37m | 10:21AM1.65m | 11:07PM1.19m | |||||||
Low Tide | 2:20AM0.15m | 2:11PM0.63m | 2:41AM0.18m | 2:40PM0.53m | 3:03AM0.24m | 3:11PM0.46m | 3:24AM0.34m | 3:45PM0.41m | 3:44AM0.46m | 4:23PM0.40m | 4:03AM0.59m | 5:06PM0.44m | 4:18AM0.73m | |||||||
 |  |  | |  | | | | | |  | | | | | |  | | | | |
 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — |
 | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — |
mm | — | — | — | — | 1 | — | — | 10 | — | — | 3 | — | — | 5 | — | — | — | — | — | 2 |
Temp °C | 32 | 29 | 31 | 31 | 29 | 31 | 31 | 29 | 30 | 30 | 29 | 30 | 31 | 28 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 34 | 33 | 35 | 34 | 32 | 36 | 34 | 33 | 35 | 34 | 33 | 33 | 33 | 29 | 32 | 32 | 32 | 33 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 8 | WSW 8 | SW 10 | SW 9 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 10 | SW 10 | SW 9 | SW 9 | WSW 11 | WSW 11 | WSW 10 |
| kJ | 48 | 37 | 98 | 64 | 208 | 314 | 671 | 667 | 560 | 539 | 479 | 736 | 453 | 271 | 188 | 144 | 117 | 121 | 119 | 166 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | WSW 15 | WSW 14 | SW 8 | SW 13 | SW 7 | WSW 7 | SW 11 | SSW 11 | SW 10 | SW 20 | SW 10 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 109 | 104 | 142 | 138 | 32 | 85 | 25 | 18 | 233 | 204 | 142 | 15 | 113 | 195 | 179 | 176 | 113 | 132 | 104 | 106 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | WSW 12 | SW 18 | SW 18 | SW 13 | SW 7 | — | — | WSW 4 | WSW 5 | W 5 | SW 20 | SW 20 | WSW 4 | WSW 4 | WSW 4 | WSW 12 | SW 8 | SW 8 | SW 18 |
| kJ | 11 | 53 | 111 | 194 | 44 | 27 | — | — | 4 | 9 | 4 | 15 | 16 | 3 | 3 | 6 | 46 | 41 | 30 | 150 |
Wind waves Height (m) Direction Period (s) | WNW 3 | — | — | W 3 | W 3 | W 3 | WSW 7 | — | — | W 5 | — | — | W 7 | — | — | W 4 | — | — | — | — |
| kJ | 1 | — | — | 1 | 3 | 1 | 19 | — | — | 8 | — | — | 4 | — | — | 6 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 271 | 0 | 99 | 271 | 0 | 99 | 271 | 0 | 0 | 271 | 0 | 99 | 271 | 0 | 99 | 105 | 0 | 99 | 271 | 0 |
Best forecast wave conditions in Sinaloa | ||||||||||||||||||||
Best forecast wave conditions in Mexico | ||||||||||||||||||||
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Information about the Barron Rivermouth Surf forecast
The above surf forecast table for Barron Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Barron Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Barron Rivermouth 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 (Barron Rivermouth) 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 Barron Rivermouth 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 Sinaloa? If you are looking for accommodation near Barron Rivermouth, camping, hotels and holiday cottages in Sinaloa, consider staying in Mazatlan which is 16 km (10 miles) away. Other places in and around Sinaloa where you can find information about places to rent, and car hire include Escuinapa de Hidalgo which is 58 km (36 miles) away and El Salto, 99 km (61 miles) away.
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