Surf Forecasts:
Cabo Blanco surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 7AM (local time) - 3ft (0.9m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 1PM (local time) - 3.5ft (1.1m), 16s period, SW swell with 567 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 7AM (local time) - 3ft (0.9m), 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 7AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 1.5m and 8s. The wind is predicted to be cross-offshore 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 1PM. 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+) | 7AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Best Surf | 7AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Most Powerful | 1PM (Sat 15th Aug) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, crew, Rusty here breaking it down.
We've got a nice little opener this Saturday, August 15th, with a long-period groundswell coming from the southwest. The water is running much warmer than normal for this time of year at about 87°. The session to circle is Saturday morning at Cabo Blanco. Expect a clean 4ft SW groundswell with a very long 16-second period, and the wind is glassy from the west at just 3 mph. The wave energy is solid at 712. This is the one; the swell direction is perfect for this spot, and with glassy conditions, you’re looking at clean, lined-up sets. It gets crowded here sometimes, so be early.
Saturday afternoon goes downhill with a risk of thunderstorms and a messy cross-shore breeze. From Sunday the 16th through Wednesday the 20th, the swell drops to around 2ft to 3ft. There are still clean moments—Monday afternoon and Tuesday morning have light winds and small, surfable waves—but the energy is low (under 462). Thursday the 20th morning is a sneaky good call: dead calm and glassy with a 3ft SSW swell, though the period has dropped to 10 seconds. Energy is 295. Small but clean.
We slide into a flat spell from around August 23rd to the 27th. Swell is tiny, around 2ft to 2ft. You’ll see plenty of glassy mornings (Sunday the 23rd, Monday the 24th), but the energy is weak, topping out at 392. This is strictly longboard and small-wave gear.
Now, the long-range looks real promising. On Friday morning, August 28th, a pulse of very long-period SW groundswell arrives with a 20-second period and 2ft swell. The energy jumps to a moderate 582, with glassy conditions. A week and a half out, but a serious standout. Saturday the 29th morning is looking even better: calm and glassy with a 3ft SW groundswell, energy at 607, and that very long period. Sunday the 30th morning follows with another glassy 3ft SSW swell, energy at 684. Three back-to-back mornings of potential gold. With those long periods over 15 seconds, the waves will be straighter on the beach, so the point and reef sections should be your target.
To sum it up: this Saturday morning is a must. Then it gets small and clean until a very promising, but still uncertain, run at the very end of the month.
Rusty.
Short Range ForecastHeavy rain (total 98mm), heaviest during Sun afternoon. 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 27mm), heaviest during Thu night. Warm (max 29°C on Wed morning, min 25°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 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 567 | 560 | 539 | 355 | 355 | 355 | 231 | 280 | 268 | 238 | 258 | 362 | 217 | 214 | 160 | 157 | 440 | 349 | 325 | 303 | 270 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-on | cross-on | cross-on | cross | glassy | cross-off | glassy | on | glassy | glassy | on | cross | glassy | cross-on | cross | glassy | on | cross-off |
High Tide | 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 | 9 | 16 | 10 | 19 | 32 | 2 | 6 | 2 | — | 2 | 2 | — | 1 | 4 | 2 | 8 | 8 | — | 11 | 30 |
Temp °C | 29 | 29 | 26 | 28 | 26 | 25 | 25 | 25 | 24 | 28 | 28 | 26 | 29 | 29 | 27 | 28 | 28 | 26 | 28 | 28 | 25 |
Feels °C | 34 | 32 | 29 | 31 | 29 | 28 | 29 | 30 | 29 | 31 | 32 | 30 | 33 | 32 | 31 | 33 | 31 | 31 | 33 | 32 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 8 | SSW 8 | SSW 7 | SSW 8 | SSW 8 | SSW 9 | SSW 9 | SSW 10 | SSW 13 | SSW 11 | SSW 11 | SSW 11 | SSW 10 |
| kJ | 567 | 560 | 539 | 138 | 142 | 276 | 226 | 177 | 220 | 214 | 157 | 138 | 142 | 190 | 156 | 157 | 440 | 349 | 325 | 303 | 270 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 6 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | WSW 6 | WSW 6 | W 6 | W 6 | SSW 16 |
| kJ | 145 | 186 | 80 | 355 | 355 | 355 | 231 | 280 | 268 | 238 | 258 | 362 | 217 | 214 | 160 | 116 | 21 | 37 | 26 | 18 | 102 |
Swell 3 Height (m) Direction Period (s) | — | SW 8 | S 11 | S 11 | S 11 | S 11 | S 16 | S 16 | S 14 | S 13 | S 12 | W 7 | W 7 | W 14 | WSW 6 | WSW 6 | SW 18 | SW 19 | SSW 18 | SSW 18 | WSW 6 |
| kJ | — | 3 | 59 | 37 | 37 | 9 | 5 | 5 | 4 | 3 | 3 | 23 | 1 | 4 | 24 | 22 | 12 | 14 | 30 | 30 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 132 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 16 | 15 | 15 | 16 | 15 | 15 | 0 | 0 | 0 | 123 | 0 | 0 | 152 | 15 | 0 | 16 | 15 | 0 | 149 | 0 |
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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