Surf Forecasts:
Cabo Blanco surf forecast from 10 Aug 2026:
- Best quality surf: Friday 14 Aug, 7AM (local time) - 2.5ft (0.8m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 4AM (local time) - 3.5ft (1.1m), 16s period, SW swell with 603 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 10AM (local time) - 2.5ft (0.7m), 13s 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 Monday (Aug 10) at 10AM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.5m and 9s. 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 4AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 10th Aug) | 2.5ft (0.7m) 13s |
| Best Surf | 7AM (Fri 14th Aug) | 2.5ft (0.8m) 19s |
| Most Powerful | 4AM (Sat 15th Aug) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s cookin’ for Cabo Blanco.
We’ve got a solid run of small, clean SW groundswell on the horizon – nothing massive, but the consistency and the windows of glassy conditions are real nice. The water temp is about average for this time of year, so no surprises there.
The standout is Friday morning, August 14th. That’s the one to circle. Swell’s building to 3 ft from the SW with a long 18-second period – that’s pure groundswell energy, and it’s gonna wrap in nicely. The wind is dead calm, glassy as a mirror. The combined energy is moderate (678), and the forecast is pointing to very good surf. This is the pick of the whole outlook.
Saturday morning, August 15th is another belter. Swell holds at 4 ft from the SW, still a nice 16-second period, and again – glassy conditions with that WNW breeze barely a whisper. Combined energy is moderate (753). Very good surf on offer.
The pattern holds into the following week. Tuesday afternoon, August 18th serves up a clean, glassy 3 ft SW swell with a 15-second period – combined energy moderate (529) and very good conditions.
Then Wednesday morning, August 19th brings a little push: 5 ft from the SSW at 11 seconds. That’s a solid, fun size, but it’s on the edge of being a handful for beginners. The wind is light and offshore from the ESE, keeping it glassy. Combined energy is moderate (707) and the forecast is for very good waves.
Later in the run, Sunday morning, August 23rd and Monday morning, August 24th both show glassy starts with nice long-period groundswell (19 and 18 seconds respectively) from the SW. Swell sizes are small (2 ft to 2 ft), but the energy is moderate (585 and 550) and the conditions are very good. Keep an eye on those – the long period will make for clean, lined-up waves, best on a point or reef.
There’s a bit of a gap in the middle – the afternoons are pretty much all blown out with onshore SW winds, so stick to the morning sessions. The winds are light and variable or glassy for all the highlight mornings.
Overall, the best on offer is definitely Friday August 14th morning, with Saturday August 15th morning and Wednesday August 19th morning as the other standouts. Get on it.
Rusty.
Short Range ForecastHeavy rain (total 36mm), heaviest during Wed afternoon. Warm (max 30°C on Mon morning, min 25°C on Wed afternoon). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 34mm), heaviest during Sat afternoon. Warm (max 29°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 13 | SW 12 | SSW 15 | SW 18 | SW 18 | SW 17 | SW 16 | S 14 | SW 15 | SSW 12 | SW 14 | SW 20 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 147 | 157 | 150 | 159 | 319 | 145 | 208 | 153 | 174 | 162 | 160 | 186 | 457 | 595 | 582 | 567 | 486 | 539 | 355 | 355 | 355 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | glassy | cross-on | cross | glassy | on | glassy | glassy | on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross | cross | on | cross |
High Tide | 1:14PM2.76m | 2:01AM2.65m | 2:18PM2.89m | 2:58AM2.86m | 3:13PM3.01m | 3:49AM3.05m | 4:04PM3.10m | 4:35AM3.18m | 4:51PM3.12m | 5:19AM3.24m | 5:36PM3.07m | 6:00AM3.20m | 6:19PM2.96m | ||||||||
Low Tide | 6:57AM0.70m | 7:42PM0.39m | 8:04AM0.55m | 8:40PM0.23m | 9:03AM0.39m | 9:31PM0.09m | 9:56AM0.25m | 10:18PM0.02m | 10:44AM0.17m | 11:02PM0.01m | 11:29AM0.15m | 11:44PM0.08m | 12:13PM0.20m | 00:26AM0.21m | |||||||
 |  |  |  | |  | | | | | | | | | | | | | |  |  | |
 | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | — | 6:49 | — | — | 6:47 | — | — | 6:47 | — |
mm | 1 | — | — | — | 5 | 5 | 2 | 22 | 1 | — | 3 | — | — | 6 | 9 | 3 | 12 | 34 | 1 | 7 | 8 |
Temp °C | 30 | 30 | 28 | 30 | 29 | 28 | 30 | 29 | 26 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 25 | 27 | 28 | 26 |
Feels °C | 34 | 33 | 33 | 34 | 32 | 32 | 33 | 32 | 31 | 32 | 33 | 31 | 32 | 32 | 32 | 32 | 31 | 29 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SW 12 | SSW 12 | S 8 | SW 18 | SW 13 | SW 16 | SSW 8 | SSW 7 | SSW 12 | S 8 | S 7 | SSW 11 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 7 | SW 15 | SSW 7 |
| kJ | 147 | 157 | 99 | 50 | 319 | 142 | 208 | 79 | 52 | 162 | 74 | 47 | 217 | 595 | 582 | 567 | 486 | 539 | 99 | 355 | 197 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | SSW 15 | SSW 14 | SSW 14 | S 9 | S 9 | S 14 | SW 15 | S 7 | SW 14 | S 12 | SW 18 | SSW 12 | S 12 | SSW 12 | SSW 12 | SSW 7 | SW 15 | S 11 | SW 15 |
| kJ | 41 | 39 | 150 | 131 | 183 | 57 | 54 | 153 | 174 | 51 | 160 | 96 | 457 | 189 | 180 | 186 | 232 | 82 | 355 | 57 | 355 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SSW 15 | S 9 | SW 18 | S 9 | SW 17 | SSW 13 | SW 16 | S 14 | SW 15 | S 12 | SW 20 | W 13 | SW 14 | SW 10 | — | W 13 | S 11 | S 11 | W 12 | S 11 |
| kJ | 129 | 88 | 37 | 159 | 57 | 145 | 114 | 125 | 103 | 106 | 77 | 186 | 4 | 74 | 4 | — | 3 | 60 | 37 | 3 | 20 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 7 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 120 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 167 | 8 | 0 | 15 | 15 | 0 | 16 | 0 | 0 | 16 | 0 | 0 | 15 | 0 | 0 | 149 | 15 | 7 | 16 | 16 |
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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