Surf Forecasts:
Cabo Blanco surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 10AM (local time) - 3.5ft (1.1m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 7AM (local time) - 3.5ft (1.1m), 16s period, SW swell with 574 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 10AM (local time) - 3.5ft (1.1m), 16s 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 Saturday (Aug 15) at 10AM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 0.7m and 12s. 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 1.1m 16s and forecast to arrive on Saturday (Aug 15) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 15th Aug) | 3.5ft (1.1m) 16s |
| Best Surf | 10AM (Sat 15th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 7AM (Sat 15th Aug) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, listen up, this is Rusty. Let's get into it.
For the next couple of weeks, our main man is Cabo Blanco. This exposed spot is picking up a consistent run of SW groundswell, and we've got a few windows of absolute magic. The water temp is sitting about average for the time of year, so you won't need the extra rubber just yet.
The standout session is hands down Saturday morning, the 30th of August. That’s your target. We're looking at a solid 5ft swell from the SSW with a very long 15-16 second period and clean as a whistle. The wind is calm, making for glassy conditions and the combined energy is a strong 1102. This is proper, powerful groundswell. That long period stuff can be a bit straight at beach breaks, but at a point setup like Cabo Blanco, it's going to be unreal. The surf quality is excellent, but at this size, it's for experienced surfers only.
Before we get there, Saturday morning the 15th of August is also a serious shout. The swell is a bit smaller at 4ft, but it's from the SW with a very long 16-second period. The wind is light, from the WNW at 3 mph, making for glassy, clean conditions. The combined energy is a solid 712. It’s going to be a lot of fun and more manageable for a wider crew. Keep in mind crowds are possible at this spot.
The long range also shows some potential. Friday morning the 28th of August looks promising with a 2ft swell, but a 19-second period and calm winds (energy 599). There are a few other mornings with clean glassy conditions and smaller swell, like Monday the 17th and Wednesday the 19th of August, but the energy is lower so the waves will be small. The second week is a bit of a slow burn with smaller surf and more onshore afternoons, but the 30th is the clear highlight. The 17th of August Monday morning looks interesting with a 5ft swell, but the period is a short 7 seconds, so it will be a bit crumbly and less powerful.
Rusty, signing off.
Short Range ForecastHeavy rain (total 139mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Tue afternoon. Warm (max 29°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SSW 9 | SW 14 | SSW 10 | SSW 13 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 567 | 560 | 539 | 355 | 355 | 355 | 234 | 280 | 268 | 288 | 258 | 362 | 217 | 214 | 160 | 154 | 159 | 297 | 325 | 303 | 286 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross-on | cross-on | glassy | glassy | cross-on | cross-off | cross-off | cross-on | glassy | glassy | glassy | cross | cross | glassy | cross-off | glassy | cross-on | cross |
High Tide | 5:19AM3.24m | 5:36PM3.07m | 6:00AM3.20m | 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 | |||||||
Low Tide | 11:29AM0.15m | 11:44PM0.08m | 12:13PM0.20m | 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 | ||||||||
 | |  | |  | |  |  | | | | | |  |  | | | | | | | |
 | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:47 | — | — | 6:47 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — |
mm | 2 | 11 | 30 | 2 | 10 | 71 | — | 1 | 2 | 1 | 5 | 13 | — | — | 1 | 1 | 6 | 1 | — | 11 | 13 |
Temp °C | 29 | 29 | 25 | 27 | 27 | 24 | 27 | 28 | 26 | 28 | 28 | 26 | 27 | 28 | 27 | 29 | 27 | 26 | 29 | 29 | 25 |
Feels °C | 32 | 32 | 29 | 31 | 31 | 28 | 31 | 32 | 30 | 32 | 32 | 31 | 31 | 33 | 32 | 33 | 31 | 30 | 33 | 32 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 6 | SW 15 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 9 | SSW 9 | SSW 10 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
| kJ | 567 | 560 | 539 | 109 | 355 | 349 | 234 | 160 | 144 | 167 | 148 | 127 | 134 | 176 | 143 | 154 | 159 | 297 | 325 | 303 | 286 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 6 | SW 15 | S 11 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 13 | W 6 | W 6 | SSW 18 | W 6 |
| kJ | 145 | 186 | 80 | 355 | 37 | 355 | 231 | 280 | 268 | 288 | 258 | 362 | 217 | 214 | 160 | 118 | 147 | 18 | 25 | 30 | 16 |
Swell 3 Height (m) Direction Period (s) | — | SW 8 | S 11 | S 11 | W 12 | S 11 | S 16 | S 10 | S 10 | S 13 | S 12 | W 8 | W 7 | WSW 7 | WSW 6 | WSW 6 | WSW 6 | SW 13 | SSW 18 | SW 15 | SSW 16 |
| kJ | — | 3 | 59 | 37 | 3 | 9 | 5 | 18 | 8 | 3 | 3 | 1 | 1 | 15 | 16 | 16 | 15 | 82 | 30 | 8 | 102 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSW 7 | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | W 6 | W 6 | W 6 |
| kJ | — | — | — | — | 120 | — | — | — | — | — | — | — | — | — | — | — | — | 46 | 43 | 24 | 23 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 15 | 0 | 15 | 7 | 0 | 0 | 24 | 0 | 0 | 143 | 0 | 0 | 0 | 15 | 8 | 0 | 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.
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