Surf Forecasts:
Boca Barranca surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 12AM (local time) - 2.5ft (0.8m), 18s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 12AM (local time) - 2.5ft (0.8m), 18s period, SSW swell with 390 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 9PM (local time) - 2.5ft (0.8m), 14s period with SSW swell.
Best Forecast Surf Conditions for Boca Barranca this week:
The surf forecast for Boca Barranca over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 06) at 9PM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.8m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Boca Barranca in the next 16 days are 0.8m 18s and forecast to arrive on Thursday (Sep 10) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 6th Sep) | 2.5ft (0.8m) 14s |
| Best Surf | 12AM (Thu 10th Sep) | 2.5ft (0.8m) 18s |
| Most Powerful | 12AM (Thu 10th Sep) | 2.5ft (0.8m) 18s |
Table - best surf conditions forecast for Boca Barranca over the next 16 days.
The Lowdown
Alright, let’s switch over to feet and miles for you. Rusty here with the long-range look.
First thing you gotta know, the water's warm. It's about 87°F, which is a couple of degrees warmer than normal for this time of year, so no need for a thick suit.
The big day to circle on the calendar is Thursday, September 10th. That morning, Boca Barranca is the spot. We're looking at a clean 3ft SSW groundswell with a ton of power – the combined energy reading is 443, so there’s some proper juice in the water. The period is a long 18 seconds, which is classic point-break stuff. The wind will be glassy with a light offshore breeze. The swell direction is SSW, right in the break's sweet spot. This is going to be as good as it gets for the whole run.
Before that, you’ve got a bit of a wait. The first real chance is Wednesday morning, September 9th. Only 2ft of SSW swell, but it’s glassy, so you can have a fun, clean session on a longboard. The energy is moderate at 293.
Then Thursday the 10th, that's the day. Don't miss it.
Friday, September 11th has another glassy morning, but the swell is a touch smaller at 2ft from the SW. It's surfable, but nothing like the day before. From there, it’s a slow fade. The mornings on Saturday the 12th, Sunday the 13th, Tuesday the 15th, Wednesday the 16th, and Thursday the 17th all have glassy conditions but tiny, weak swell between 1ft and 2ft. The energy readings drop into the hundreds, so it's a real scratch-fest. The point is known to be inconsistent, so this run of small days is pretty standard.
Looking way ahead, Monday, September 21st has a bit of promise. Another glassy morning with a 2ft SSW groundswell and moderate energy at 249. It's two weeks out, so keep an eye on it, but don't book the day off work just yet.
So, here’s the deal: you get one absolute standout. Be at Boca Barranca early on Thursday, September 10th, for glassy 3ft SSW groundswell. Everything else is small, clean, and for the patient surfer.
Rusty.
Short Range ForecastHeavy rain (total 24mm), heaviest during Sun afternoon. Warm (max 30°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed afternoon. Warm (max 31°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SW 16 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 334 | 330 | 233 | 170 | 161 | 98 | 121 | 113 | 147 | 142 | 229 | 390 | 390 | 330 | 322 | 255 | 232 | 140 | 138 | 138 | 73 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | glassy | cross-on | cross | glassy | cross-on | cross | glassy | glassy | cross-on | cross-off | glassy | cross | cross-off | glassy | cross | off | glassy | cross | glassy |
High Tide | 10:01AM2.35m | 10:53PM2.14m | 11:20AM2.35m | 00:09AM2.26m | 12:32PM2.43m | 1:14AM2.44m | 1:34PM2.55m | 2:07AM2.63m | 2:27PM2.66m | 2:54AM2.79m | 3:14PM2.73m | 3:37AM2.89m | 3:58PM2.75m | ||||||||
Low Tide | 4:35PM0.59m | 4:59AM0.72m | 5:50PM0.54m | 6:16AM0.64m | 6:55PM0.42m | 7:22AM0.49m | 7:50PM0.29m | 8:17AM0.33m | 8:38PM0.19m | 9:06AM0.20m | 9:22PM0.13m | 9:50AM0.13m | 10:04PM0.13m | ||||||||
 |  |  | | |  | | | |  | |  | | |  | | | |  | | | |
 | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | 5:45 | — | — | 5:44 | — | — | 5:44 | — | — | 5:43 | — | — | 5:42 | — | — | 5:42 | — | — | 5:40 | — |
mm | 1 | 5 | 8 | 2 | 4 | — | 1 | 3 | — | — | 4 | 1 | — | 1 | — | — | 3 | — | — | 4 | 2 |
Temp °C | 30 | 28 | 27 | 28 | 26 | 26 | 29 | 29 | 27 | 30 | 30 | 26 | 31 | 30 | 27 | 31 | 30 | 27 | 30 | 29 | 27 |
Feels °C | 33 | 32 | 31 | 31 | 30 | 31 | 33 | 33 | 32 | 33 | 33 | 29 | 33 | 32 | 31 | 33 | 32 | 31 | 33 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 7 | SSW 7 | SSW 6 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SW 16 | SW 15 | SSW 14 | SSW 14 | SSW 14 | S 8 |
| kJ | 334 | 330 | 62 | 45 | 41 | 98 | 96 | 96 | 147 | 142 | 229 | 390 | 390 | 330 | 322 | 255 | 232 | 140 | 138 | 138 | 46 |
Swell 2 Height (m) Direction Period (s) | S 6 | SSW 7 | SSW 14 | SSW 14 | SSW 14 | S 6 | SSW 18 | SSW 6 | SSW 12 | SSW 12 | S 7 | SSW 8 | S 10 | S 9 | S 10 | SSW 6 | S 6 | S 6 | S 6 | S 6 | SSW 14 |
| kJ | 22 | 54 | 233 | 170 | 161 | 20 | 121 | 12 | 55 | 56 | 9 | 19 | 35 | 44 | 47 | 14 | 20 | 20 | 19 | 19 | 73 |
Swell 3 Height (m) Direction Period (s) | S 10 | SW 21 | SW 21 | SSW 20 | SSW 19 | SSW 18 | S 6 | SSW 17 | S 6 | SW 19 | SSW 20 | WNW 10 | W 10 | S 12 | W 10 | S 11 | S 10 | S 10 | S 10 | S 9 | SW 18 |
| kJ | 8 | 17 | 17 | 37 | 74 | 64 | 12 | 113 | 6 | 95 | 37 | 10 | 18 | 3 | 8 | 20 | 17 | 16 | 17 | 15 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 3 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 6 | 0 | 41 | 6 | 0 | 6 | 6 | 0 | 0 | 126 | 0 | 0 | 138 | 0 | 0 | 107 | 0 | 0 | 6 | 0 |
Best forecast wave conditions in Golfo de Nicoya | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the Boca Barranca Surf forecast
The above surf forecast table for Boca Barranca provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Boca Barranca can be found by selecting the local surf guide option on the grey menu. Our Boca Barranca 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 (Boca Barranca) 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 Boca Barranca 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.
Boca Barranca is 5 km (3 miles) from Chacarita. If you plan a holiday in Golfo de Nicoya, look for hotels and other accommodation in Chacarita. Chacarita has rooms for a wide range of budgets as well as car hire and transport links.
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