Surf Forecasts:
Cabo Blanco surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 1AM (local time) - 3ft (0.9m), 16s period, SW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 4PM (local time) - 4ft (1.2m), 13s period, SSW swell with 484 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 2.5ft (0.8m), 14s period with SW swell.
Best Forecast Surf Conditions for Cabo Blanco this week:
The surf forecast for Cabo Blanco over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 10AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.3m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cabo Blanco in the next 16 days are 1.2m 13s and forecast to arrive on Thursday (Aug 20) at 4PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 17th Aug) | 2.5ft (0.8m) 14s |
| Best Surf | 1AM (Wed 19th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 4PM (Thu 20th Aug) | 4ft (1.2m) 13s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a proper look at what’s on the table for the next couple of weeks at Cabo Blanco.
We’ve got a solid run of SW groundswell on the way, and the secret here is the wind. For the most part, it’s looking light and often glassy, especially in the mornings. The water’s sitting at 87° – that’s much warmer than usual for this time of year, so you can leave the thick winter rubber at home. The swell energy is moderate, hovering around the 400-500 mark, which means there’s decent push without it getting out of control.
The real standout is coming up on Saturday, 29th August. The afternoon session looks like a cracker: clean 0.9m (about 3 ft) of SSW groundswell (period 16s), combined energy of 533, and glassy conditions. That’s a proper long-period groundswell hitting an exposed SW break – it’ll wrap in with shape and power. This is the pick of the whole forecast. The Sunday after that still looks good too, with clean 0.9m (3 ft) SSW swell and light winds. Crowds can be an issue here sometimes, so get in early.
For a closer-to-home call, Tuesday morning, 18th August is worth paddling out for. It’s glassy, with a 0.9m (3 ft) SW swell from a solid 14-second period. Combined energy is 442. That’s clean and fun, with no wind to mess it up. The Thursday after that, 20th August, shows a bump in size – 1.0m (about 3 ft) SSW in the morning with glass – but the period drops to 10 seconds, so it’ll be a bit less lined up.
There’s a noticeable dip in swell around the 23rd to the 27th, where we drop to 0.5m (2 ft) or lower. The energy drops way down too, with combined numbers in the 100-200 range. That’s a proper lull, but there are still some glassy mornings if you just want a longboard and some peace. The break is fairly consistent, so this quiet spell shouldn’t last forever.
From Friday, 28th August morning, the swell picks back up with a clean 0.6m (2 ft) SW groundswell, then builds into that cracker Saturday. The 31st August keeps the 0.9m (3 ft) SW rolling in, with a glassy morning – a solid way to end the outlook.
Keep an eye on the tides for Cabo Blanco, and remember: that long-period groundswell on the 29th is a point-style setup here, so it’ll hold its shape better than a beach break would.
Stay stoked.
Rusty.
Short Range ForecastHeavy rain (total 46mm), heaviest during Sun afternoon. Warm (max 28°C on Tue morning, min 24°C on Sun afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 29°C on Fri morning, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SSW 10 | SSW 10 | SSW 13 | SSW 12 | SSW 11 | SSW 11 | SSW 10 | S 10 | S 10 | SSW 10 |
Wave Graph | ||||||||||||||||||||
355 | 355 | 231 | 280 | 268 | 288 | 258 | 362 | 217 | 214 | 163 | 166 | 484 | 454 | 376 | 359 | 265 | 204 | 196 | 154 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | cross-on | glassy | cross-off | cross | off | cross-off | glassy | glassy | glassy | on | glassy | glassy | on | cross-off | glassy | cross-on | glassy |
High Tide | 6:19PM2.96m | 6:41AM3.09m | 7:01PM2.80m | 7:21AM2.92m | 7:44PM2.60m | 8:03AM2.73m | 8:30PM2.40m | 8:48AM2.53m | 9:21PM2.22m | 9:40AM2.37m | 10:24PM2.09m | 10:44AM2.26m | 11:39PM2.05m | |||||||
Low Tide | 00:26AM0.21m | 12:56PM0.30m | 1:06AM0.39m | 1:39PM0.45m | 1:48AM0.59m | 2:23PM0.61m | 2:32AM0.78m | 3:13PM0.77m | 3:23AM0.95m | 4:13PM0.89m | 4:25AM1.08m | 5:23PM0.94m | ||||||||
— | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
6:47 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | |
mm | 19 | 7 | 3 | 8 | 2 | 4 | 2 | 1 | — | — | — | — | 5 | — | — | 3 | 1 | — | 3 | 1 |
Temp °C | 26 | 25 | 27 | 26 | 25 | 28 | 28 | 25 | 26 | 27 | 26 | 28 | 28 | 26 | 29 | 29 | 26 | 29 | 29 | 27 |
Feels °C | 30 | 29 | 32 | 30 | 30 | 31 | 31 | 29 | 30 | 32 | 31 | 33 | 32 | 31 | 32 | 32 | 30 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 9 | SSW 9 | SSW 9 | SSW 10 | SSW 10 | SSW 13 | SSW 12 | SSW 11 | SSW 11 | SSW 10 | S 10 | S 10 | SSW 10 |
105 | 135 | 193 | 143 | 111 | 140 | 117 | 166 | 166 | 173 | 163 | 166 | 484 | 454 | 376 | 359 | 265 | 204 | 196 | 154 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 12 | SW 19 | WSW 5 | S 12 | SW 16 | SW 16 | SSW 15 | SSW 14 |
355 | 355 | 231 | 280 | 268 | 288 | 258 | 362 | 217 | 214 | 160 | 116 | 47 | 14 | 6 | 42 | 127 | 119 | 142 | 134 | |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | S 10 | S 10 | S 13 | S 12 | W 8 | W 7 | — | S 14 | S 13 | SW 18 | SW 16 | SSW 18 | SSW 18 | S 11 | SSW 21 | SSW 20 | SW 20 |
37 | 20 | 9 | 18 | 8 | 3 | 3 | 1 | 1 | — | 4 | 28 | 12 | 10 | 30 | 30 | 38 | 44 | 38 | 60 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 15 | 0 | 149 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 149 | 0 | 0 | 16 | 0 |
Best forecast wave conditions in Golfo Dulce | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Cabo Blanco Surf forecast
The above surf forecast table for Cabo Blanco provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cabo Blanco can be found by selecting the local surf guide option on the grey menu. Our Cabo Blanco 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 (Cabo Blanco) 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 Cabo Blanco 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 Golfo Dulce? If you are looking for accommodation near Cabo Blanco, camping, hotels and holiday cottages in Golfo Dulce, consider staying in Golfito which is 31 km (19 miles) away. Other places in and around Golfo Dulce where you can find information about places to rent, and car hire include Puerto Armuelles which is 32 km (20 miles) away, La Concepcion, Pedregal and David.











