Surf Forecasts:
Cabo Blanco surf forecast from 23 Aug 2026:
- Best quality surf: Friday 28 Aug, 10PM (local time) - 3ft (0.9m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 29 Aug, 4PM (local time) - 4.5ft (1.3m), 16s period, SW swell with 823 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 7AM (local time) - 2ft (0.6m), 14s period with SSW 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 Sunday (Aug 23) at 7AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.8m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cabo Blanco in the next 16 days are 1.3m 16s and forecast to arrive on Saturday (Aug 29) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 26) at 4AM.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 23rd Aug) | 2ft (0.6m) 14s |
| Best Surf | 10PM (Fri 28th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 4PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, I’ve had a good look at what’s coming up for us here. Let’s get into it.
The next couple of days are a bit of a write-off, honestly – small, weak swell and messy afternoon winds mean you’re not missing much. Things really start to wake up from the end of next week. We’ve got a nice run of building swell with some real standouts, especially for those who can get out early.
The first real session to pencil in is Monday morning, August 24th at Cabo Blanco. It’s not big – just about 2 ft from the SW, but the wind is dead calm, glassy as a mirror. That’s your window. The combined swell energy is moderate at 345 – enough for a longboard or a funboard to get a few. Don’t sleep on it; that kind of clean condition doesn’t last long.
Friday morning, August 28th, is another good call. The wind is NE 0 mph, glassy again. Swell is up a touch to 2 ft from the SW, and the period is a very long 20 seconds. That’s pure groundswell energy, and at a point break like Cabo Blanco, it’ll set up nicely. Combined energy is a solid 406. Clean and lined up.
But the real highlight, the one I’m most amped for, is Saturday morning, August 29th. We’re looking at about 4 ft of SW swell with those classic long-period pulses. Wind is calm – glass – and the combined energy jumps to 763. That’s moderate to strong energy. The consistency is fairly consistent, and while crowds are *sometimes* an issue here, a Saturday morning with conditions that good will definitely draw a few extra heads. Expect a bit of company, but it’s worth it for the quality.
Sunday morning, August 30th, pushes it over the edge for the experienced crew. Swell hits about 4 ft from the SW, combined energy is 1102 – that's strong. Glassy conditions again. At over 5 ft, this is getting into expert-only territory, especially with that power behind it. If you’ve got the skills, you’ll be in for a treat.
Looking further out, Thursday morning, September 4th and Friday morning, September 5th are both rated excellently but are still a week and more away. On the 4th, we’ve got about 4 ft SW swell, long 18-second period, glassy wind, and combined energy of 1112. The 5th is the biggest of the run at about 5 ft with 16-second period and a combined energy of 1381. Glassy morning again. Strong wave energy, powerful swell. These are promising, but as always, don’t bank on the details this far out. Keep an eye on the charts.
Later in the window, Sunday morning, September 7th offers about 3 ft from the SW with a 14-second period. Clean with NE 0 mph winds. It’s good, solid surf, but after the earlier punch, it’s a step back. Still worth a paddle if you missed the peak.
Overall, the next two weeks have some absolute gems at Cabo Blanco. The water temperature is about average for the time of year, nothing wild, but with that glassy, long-period SW groundswell? That’s the magic recipe here.
Get on it.
Rusty
Short Range ForecastHeavy rain (total 38mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 71mm), heaviest during Tue night. Warm (max 29°C on Fri morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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) | SW 19 | SW 18 | SSW 18 | SW 18 | SSW 17 | SW 16 | SW 16 | SSW 16 | SSW 15 | SW 15 | SSW 15 | SSW 14 | SW 18 | SW 18 | SW 17 | SW 20 | SW 20 | SW 18 | SW 16 | SW 16 | SW 15 |
Wave Graph | |||||||||||||||||||||
184 | 168 | 216 | 155 | 202 | 274 | 129 | 171 | 158 | 106 | 84 | 81 | 81 | 81 | 142 | 239 | 186 | 595 | 581 | 823 | 724 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | glassy | on | cross | glassy | cross-on | cross-off | glassy | on | glassy | glassy | on | cross | glassy | on | glassy | glassy | on | cross |
High Tide | 11:56AM2.24m | 00:52AM2.11m | 1:02PM2.31m | 1:49AM2.24m | 1:56PM2.43m | 2:34AM2.42m | 2:41PM2.56m | 3:13AM2.60m | 3:21PM2.69m | 3:48AM2.77m | 3:58PM2.79m | 4:22AM2.91m | 4:34PM2.86m | ||||||||
Low Tide | 5:38AM1.12m | 6:32PM0.90m | 6:49AM1.07m | 7:31PM0.80m | 7:47AM0.96m | 8:18PM0.67m | 8:34AM0.81m | 8:58PM0.54m | 9:15AM0.66m | 9:34PM0.43m | 9:53AM0.52m | 10:08PM0.34m | 10:30AM0.40m | 10:42PM0.29m | |||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 6:45 | — | — | 6:44 | — | — | 6:44 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:42 | — | |
mm | 1 | 4 | 2 | 1 | 4 | 5 | 4 | 7 | 39 | — | 3 | 7 | 1 | 9 | 6 | — | 6 | 3 | 1 | 9 | 7 |
Temp °C | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 25 | 28 | 28 | 26 | 28 | 28 | 25 | 29 | 28 | 26 | 29 | 28 | 26 |
Feels °C | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 29 | 31 | 31 | 31 | 32 | 31 | 28 | 33 | 31 | 31 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 10 | S 10 | SW 16 | S 9 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SW 6 | SSW 6 | SW 6 | SSW 7 | SW 16 | SW 7 |
113 | 142 | 139 | 117 | 117 | 274 | 55 | 45 | 58 | 56 | 53 | 53 | 32 | 37 | 42 | 38 | 49 | 94 | 138 | 823 | 173 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 18 | SW 12 | SSW 17 | S 9 | SW 16 | SSW 16 | SSW 15 | SW 15 | SSW 15 | SSW 14 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 16 | SW 18 | SW 16 | SSW 7 | SW 15 |
121 | 116 | 216 | 73 | 202 | 74 | 129 | 171 | 158 | 106 | 84 | 81 | 81 | 81 | 142 | 129 | 181 | 595 | 581 | 99 | 724 | |
Swell 3 Height (m) Direction Period (s) | SW 19 | SW 18 | SSW 13 | SW 18 | SSW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SSW 10 | SSW 19 | SW 14 | SW 15 | SSW 12 | SW 20 | SW 20 | S 11 | SW 13 | WSW 7 | S 10 |
184 | 168 | 114 | 155 | 57 | 36 | 36 | 30 | 30 | 30 | 22 | 36 | 49 | 76 | 50 | 239 | 186 | 38 | 44 | 79 | 18 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 111 | 0 | 0 | 16 | 15 | 0 | 16 | 0 | 0 | 152 | 0 | 0 | 16 | 15 | 0 | 50 | 0 | 0 | 16 | 15 |
Best forecast wave conditions in Golfo Dulce | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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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.











