Surf Forecasts:
Barron Rivermouth surf forecast from 26 Aug 2026:
- Best quality surf: Friday 28 Aug, 11PM (local time) - 3.5ft (1.1m), 17s period, SW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 2AM (local time) - 4.5ft (1.3m), 16s period, SW swell with 931 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 2AM (local time) - 2ft (0.6m), 16s 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 Wednesday (Aug 26) at 2AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.8m and 9s. The wind is predicted to be cross-offshore 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 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (MST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 26th Aug) | 2ft (0.6m) 16s |
| Best Surf | 11PM (Fri 28th Aug) | 3.5ft (1.1m) 17s |
| Most Powerful | 2AM (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 get into it.
Look, I’ll level with you – the first week and a half is a real grind. We’ve got a long stretch of small, messy, poor surf at Barron Rivermouth. The energy is mostly weak, with combined energy readings in the low hundreds, and the wind is a constant cross-onshore. The water’s a touch warmer than normal at 89°, but that’s the only nice thing I can say. You’ll be twiddling your thumbs.
The first real hope arrives on Sunday, August 30th, in the morning. Glassy conditions, a light S wind, and a 3ft SW groundswell with a 14-second period. The combined energy comes in at 446 – moderate – and the overcast sky is gone. It’s still not big, but it’s the cleanest it’s been all week. That’s your best bet early on.
Then there’s a real gap. Monday and Tuesday are a write-off again. On Wednesday, September 2nd, we start to see a shift. The swell gets a bit of a longer period (16 seconds) and the energy climbs into the 400s, but the wind is still a cross or cross-on shore. It’s marginal, but the potential is there.
The real standout, though, is shaping up for Monday, September 7th, in the afternoon. This is the one to circle on the calendar. We’re looking at a solid 5ft SW groundswell, with a period of 13 seconds. The combined energy is a full 947 – that’s proper moderate energy. And the wind? Completely dead calm, glassy. That’s a recipe for some very good surf. The break is a point/river mouth, so that long-period energy will wrap in nicely. It’s a rare moment of calm in an otherwise rough stretch.
After that, the swell really picks up. Tuesday, September 8th, sees 6ft to 6ft SW swell, but the wind goes cross-shore and cross-on, making it a bit of a gnarly paddle. The energy jumps to 1427 and then 2295 – that’s strong wave energy. This is for the experienced crew only. Then on Wednesday, September 9th, we’re into 8ft WSW swell with a clean cross-off wind, but at that size, it’s expert territory. The energy reads 2612 and 3134 – very strong.
So, to sum it up: the early part is a bust. Your best clean window is Sunday morning, August 30th, and the absolute standout is Monday afternoon, September 7th. That’s the one where the stars align. The big stuff later in the second week is for the heavy hitters.
Stay patient, and keep your eyes on that Monday.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 31°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Warm (max 31°C on Fri afternoon, min 26°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 11 | SW 16 | SW 16 | 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 14 | SW 13 | SW 13 | SW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 217 | 203 | 157 | 109 | 104 | 142 | 194 | 208 | 314 | 671 | 931 | 560 | 611 | 421 | 350 | 346 | 285 | 215 | 176 | 171 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | on | cross-on | glassy | on | cross-on | off | cross-on | cross-on | cross | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | off |
High Tide | 7:05PM1.63m | 8:28AM1.42m | 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 | |||||||
Low Tide | 1:58AM0.17m | 1:43PM0.73m | 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 | |||||||
 |  |  | |  | | | | | | | | |  | | | | | | | |
 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — |
 | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — |
mm | — | 1 | — | — | — | — | — | 3 | — | — | 1 | — | — | 5 | — | — | 1 | — | — | — |
Temp °C | 31 | 29 | 31 | 31 | 29 | 31 | 31 | 29 | 30 | 31 | 30 | 30 | 31 | 30 | 29 | 30 | 29 | 30 | 30 | 29 |
Feels °C | 34 | 34 | 35 | 33 | 33 | 35 | 34 | 33 | 34 | 35 | 35 | 35 | 34 | 35 | 33 | 33 | 34 | 34 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 9 | SW 8 | SW 8 | WSW 8 | SW 10 | WSW 9 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
| kJ | 217 | 99 | 80 | 48 | 37 | 98 | 53 | 208 | 314 | 671 | 931 | 560 | 611 | 421 | 350 | 346 | 285 | 215 | 176 | 171 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | WSW 15 | WSW 14 | SW 8 | SW 13 | WSW 7 | WSW 7 | SSW 11 | SSW 10 | SW 10 | SW 10 | SW 9 | SSW 8 | SSW 8 | SW 8 | SW 8 |
| kJ | 125 | 203 | 157 | 109 | 104 | 142 | 138 | 32 | 85 | 19 | 18 | 154 | 114 | 154 | 94 | 84 | 38 | 23 | 28 | 31 |
Swell 3 Height (m) Direction Period (s) | SW 22 | SW 11 | SSW 11 | SSW 10 | WSW 12 | SW 18 | SW 18 | SW 13 | WSW 7 | SSW 10 | WSW 7 | WSW 6 | — | WSW 5 | WSW 4 | SW 20 | W 6 | WSW 19 | WSW 9 | SW 9 |
| kJ | 18 | 19 | 12 | 11 | 53 | 111 | 194 | 44 | 21 | 19 | 15 | 11 | — | 9 | 2 | 16 | 5 | 36 | 8 | 22 |
Wind waves Height (m) Direction Period (s) | W 3 | — | — | WNW 3 | — | — | W 3 | — | — | — | — | — | W 6 | — | — | W 6 | — | — | W 6 | — |
| kJ | 1 | — | — | 1 | — | — | 1 | — | — | — | — | — | 23 | — | — | 1 | — | — | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 271 | 0 | 99 | 271 | 0 | 99 | 273 | 0 | 99 | 271 | 14 | 99 | 359 | 0 | 0 | 271 | 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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