Surf Forecasts:
La Barra surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 3AM (local time) - 3ft (0.9m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 12AM (local time) - 3ft (0.9m), 16s period, SSW swell with 392 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 9PM (local time) - 3ft (0.9m), 16s period with SSW swell.
Best Forecast Surf Conditions for La Barra this week:
The surf forecast for La Barra over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 9PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.8m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at La Barra in the next 16 days are 0.9m 16s and forecast to arrive on Wednesday (Aug 19) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Wednesday (Aug 19) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 18th Aug) | 3ft (0.9m) 16s |
| Best Surf | 3AM (Wed 19th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 12AM (Wed 19th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for La Barra over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of surf on the cards for La Barra, and it’s one of those setups that’s going to really reward the early birds. The whole window is packed with potential, but there are a couple of absolute gems.
The overall pattern is a sustained, consistent SSW swell, with a lot of those early mornings coming in glassy. The water’s sitting at 88°, which is a touch warmer than normal for this time of year – you’ll be leaving the wetsuit at home.
The standouts are the mornings of Saturday 29 August and Sunday 30 August. The swell bumps up to 4 ft to 4 ft from the SSW, with a period of 15 to 17 seconds – that’s proper groundswell, with heaps of energy. The combined energy readings are 748 and 797, which is strong wave energy. And the wind? Glassy. Zero. It doesn’t get any cleaner. Because it’s a river/jetty setup, that long-period SSW energy is going to wrap in beautifully, offering well-shaped, lined-up waves. The crowd factor is ‘sometimes’ here, so on a Saturday and Sunday morning with conditions like this, you’d expect a few others to have the same idea, but it’s far from a circus.
Let’s walk through the fortnight.
Tuesday 18 August kicks off with a glassy 3 ft SSW swell (14s period) in the morning – that’s a nice, clean 417 energy reading. The afternoon goes cross-on and choppy, so the morning is the only window.
Wednesday 19 August is another cracker of a morning – dead calm, 3 ft of SSW swell, period 15s, energy 452. The afternoon gets messy with a cross-on 12 mph breeze.
Thursday 20 August – glassy morning again, 3 ft of S swell (14s), energy 416. The afternoon turns choppy with a cross-on breeze and the swell period drops to 8s, so it gets short and messy.
Friday 21 August – calm morning, 4 ft from the S (11s), energy 421. Good solid waves. Afternoon cross-on again.
Saturday 22 August – lovely start, glassy, 3 ft S swell (11s), energy 451. Afternoon cross-on ruins it.
Sunday 23 August – glassy morning, though the swell drops to 2 ft from the SSW (14s), energy 434. Still clean but smaller. The afternoon goes cross-shore and marginal.
Monday 24 August – small but glassy, 2 ft (18s period!), energy 399. That long period makes it look better than the height suggests, but it’s a small day.
Tuesday 25 August – glassy morning, 2 ft SSW (16s), energy 353. Clean but small.
Wednesday 26 August – another glassy start, 2 ft (15s), energy 218. Getting smaller.
Thursday 27 August – no good windows here. Both morning and afternoon are cross-on and choppy, with swell down to 1 ft.
Friday 28 August – morning is marginal with a risk of thunderstorms and cross-on wind. Swell is 3 ft (16s), energy 410, but the wind is a problem.
Saturday 29 August – standout morning. Glassy, 4 ft of SSW groundswell at 17s, energy 748. This is the real deal. Waves are going to be clean, powerful, and well-shaped. The afternoon goes cross-on, so make the most of the morning.
Sunday 30 August – standout morning. Dead calm, 4 ft from the SSW (15s), energy 797. That’s the biggest, cleanest swell of the run. The period is just a touch shorter than the day before, but the size and glassy conditions are unbeatable.
Monday 31 August – glassy morning, 4 ft SSW (14s), energy 858. That’s the highest energy reading of the lot. The afternoon goes onshore, but the morning is another top-tier session.
Tuesday 1 September – calm morning, 4 ft SSW (13s), energy 576. Clean and solid. Afternoon goes cross-on and choppy.
Wednesday 2 September – glassy morning, 2 ft from the SSW (18s period – very long!), energy 626. That’s a super long-period groundswell; it’ll be a bit more selective at the river mouth, but the shape should be excellent.
There’s no real gap in the action here – maybe a couple of afternoons that are write-offs, but the mornings are consistent. From the start, almost every morning offers something rideable, and the last few days of August and first of September are the clear highlights.
This is a spot that breaks fairly consistently, so the whole run has a good feel to it. Just remember, the river mouth can handle that long-period swell really well, so don’t write off the days with 15-second-plus periods – they’ll be the ones with the best shape.
Get amongst it. Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 31°C on Tue morning, min 26°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 54mm), heaviest during Sat night. Warm (max 31°C on Fri morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 14 | SSE 8 | SSW 13 | S 11 | S 11 | S 11 | SSW 16 | S 11 | SSW 14 | SSW 14 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||||
303 | 321 | 392 | 344 | 268 | 229 | 372 | 223 | 145 | 307 | 302 | 279 | 231 | 224 | 220 | 161 | 214 | 286 | 180 | 267 | 310 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | off | glassy | cross-on | off | glassy | cross-on | off | glassy | cross | cross | glassy | cross-on | off |
High Tide | 6:47PM1.66m | 7:12AM1.84m | 7:32PM1.53m | 7:58AM1.73m | 8:20PM1.42m | 8:48AM1.64m | 9:15PM1.33m | 9:44AM1.57m | 10:18PM1.28m | 10:45AM1.55m | 11:24PM1.29m | 11:46AM1.57m | 00:26AM1.35m | ||||||||
Low Tide | 12:48PM0.27m | 00:51AM0.28m | 1:34PM0.36m | 1:34AM0.38m | 2:24PM0.45m | 2:19AM0.48m | 3:19PM0.53m | 3:12AM0.56m | 4:22PM0.57m | 4:13AM0.60m | 5:26PM0.56m | 5:18AM0.61m | 6:24PM0.52m | ||||||||
5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | |
— | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | |
mm | — | 1 | 1 | — | — | — | — | — | 1 | — | — | 4 | — | 1 | 45 | — | — | 4 | — | — | — |
Temp °C | 31 | 31 | 27 | 31 | 31 | 29 | 31 | 31 | 29 | 31 | 31 | 27 | 31 | 31 | 26 | 30 | 31 | 28 | 30 | 30 | 27 |
Feels °C | 32 | 33 | 32 | 31 | 32 | 33 | 32 | 32 | 34 | 31 | 32 | 31 | 33 | 33 | 29 | 32 | 33 | 32 | 33 | 33 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | S 14 | SSE 8 | SE 7 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 | S 10 | S 10 | S 9 | SSW 17 | SSW 16 |
303 | 321 | 392 | 344 | 268 | 229 | 372 | 223 | 55 | 307 | 302 | 279 | 231 | 224 | 185 | 125 | 122 | 88 | 83 | 267 | 310 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SE 7 | SE 7 | SSW 13 | S 10 | SE 6 | SE 8 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 18 | SSW 12 | S 9 | SE 7 |
83 | 78 | 85 | 67 | 48 | 30 | 31 | 154 | 90 | 21 | 82 | 123 | 215 | 166 | 220 | 161 | 156 | 286 | 136 | 85 | 30 | |
Swell 3 Height (m) Direction Period (s) | SSW 18 | S 10 | SSW 9 | SSW 8 | SSW 9 | S 8 | SW 18 | SSW 10 | SSW 13 | SSW 15 | SSW 15 | SE 7 | SE 6 | SSW 20 | SE 7 | SSW 19 | SSW 18 | SSW 13 | SSW 18 | SSW 12 | S 9 |
31 | 8 | 8 | 41 | 48 | 33 | 13 | 10 | 145 | 93 | 46 | 21 | 5 | 75 | 33 | 148 | 214 | 149 | 180 | 56 | 63 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 3 | — | — | SE 8 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | 54 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 644 | 0 | 0 | 295 | 0 | 0 | 470 | 0 | 0 | 138 | 0 | 0 | 138 | 0 | 0 | 295 | 3 | 0 | 120 | 0 |
Best forecast wave conditions in Guatemala - Pacific Coast | |||||||||||||||||||||
Best forecast wave conditions in Guatemala | |||||||||||||||||||||
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Information about the La Barra Surf forecast
The above surf forecast table for La Barra provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at La Barra can be found by selecting the local surf guide option on the grey menu. Our La Barra 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 (La Barra) 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 La Barra 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.
La Barra is 9 km (6 miles) from San Jose. If you plan a holiday in Guatemala - Pacific Coast, look for hotels and other accommodation in San Jose. San Jose has rooms for a wide range of budgets as well as car hire and transport links.











