Surf Forecasts:
Cabo Blanco surf forecast from 28 Aug 2026:
- Best quality surf: Friday 28 Aug, 10PM (local time) - 3ft (0.9m), 18s period, SW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 1PM (local time) - 4ft (1.2m), 17s period, SW swell with 861 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 10PM (local time) - 3ft (0.9m), 18s 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 Friday (Aug 28) at 10PM. The primary swell is predicted to be 0.9m and 18s period with a secondary swell of 0.8m 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 17s and forecast to arrive on Friday (Sep 04) 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+) | 10PM (Fri 28th Aug) | 3ft (0.9m) 18s |
| Best Surf | 10PM (Fri 28th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 1PM (Fri 4th Sep) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, let’s talk about Cabo Blanco in feet. It’s been a slow start to the run, but a nice little stretch of clean southwest groundswell is lining up.
This Friday morning, August 28th, it’s tiny: 2ft from the southwest, super long 20 second period, and dead flat calm. The energy is weak (359), so it’s a gamble, but you never know with these long-period pulses.
Saturday the 29th is the real opener. Swell pops to 4ft, still southwest, 16 second period, and glassy in the morning. The energy jumps to 666 – moderate to strong. That’s a proper window. Might be a little straight with that period on the beach, but in the clean morning it’ll be fun.
Sunday the 30th keeps it rolling: 4ft southwest, glassy, 14 seconds, and solid energy at 726. Mornings are your friend; the afternoons get stormy.
Monday the 31st: clean 3ft, 13 seconds, glassy conditions again. Energy is moderate (490).
Then it drops off a little. Tuesday (Sept 1) and Wednesday (Sept 2) mornings give you small, clean 3ft to 3ft waves, nothing special.
The big highlight of the second week is Friday morning, September 4th. We get a clean 4ft southwest groundswell, 17 second period, dead calm – glass. The energy is strong at 836. If the banks are good, that’s the session to wait for. Saturday the 5th pushes to 5ft with strong energy (1003), but the wind comes cross-onshore, so it won’t be as clean. Friday the 4th is the standout.
Later on, you get clean windows on Tuesday the 8th (2ft, 18 seconds, glassy) and Wednesday the 9th (4ft, 16 seconds, glassy). By the final Saturday the 12th, it’s small and messy.
Best calls: Saturday and Sunday mornings (Aug 29-30) are the peak first week. For the second week, Friday September 4th is the one to aim for. Water temp is 86°, about a touch warmer than average. Mornings are clean, afternoons bring storm risks.
Stay on the morning glass.
Rusty.
Short Range ForecastHeavy rain (total 42mm), heaviest during Sun night. Warm (max 29°C on Fri morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 70mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 20 | SW 20 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SW 17 | SW 16 | SW 19 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 186 | 219 | 595 | 581 | 823 | 733 | 676 | 521 | 368 | 347 | 304 | 245 | 220 | 216 | 180 | 215 | 227 | 222 | 201 | 284 | 528 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | glassy | on | glassy | glassy | on | glassy | glassy | cross-on | glassy | cross | cross-on | cross | glassy | on | glassy | glassy | on | glassy |
High Tide | 3:58PM2.79m | 4:22AM2.91m | 4:34PM2.86m | 4:55AM3.01m | 5:11PM2.88m | 5:29AM3.06m | 5:48PM2.86m | 6:05AM3.06m | 6:27PM2.80m | 6:44AM3.00m | 7:09PM2.69m | 7:28AM2.90m | 7:58PM2.56m | ||||||||
Low Tide | 10:08PM0.34m | 10:30AM0.40m | 10:42PM0.29m | 11:05AM0.32m | 11:16PM0.28m | 11:42AM0.28m | 11:51PM0.30m | 12:20PM0.28m | 00:29AM0.37m | 1:02PM0.34m | 1:11AM0.47m | 1:49PM0.43m | 2:00AM0.60m | ||||||||
 | |  | | | | | | | | |  |  | | | | | |  | |  | |
 | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:42 | — | — | 6:42 | — | — | 6:40 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — |
mm | 2 | 6 | 4 | 2 | 6 | 4 | 2 | 6 | 10 | 3 | 8 | 7 | — | 12 | 27 | — | 5 | 8 | — | 2 | — |
Temp °C | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 26 | 27 | 28 | 26 | 29 | 28 | 25 | 28 | 28 | 25 | 28 | 28 | 27 |
Feels °C | 33 | 33 | 32 | 33 | 31 | 32 | 33 | 31 | 31 | 32 | 32 | 31 | 32 | 31 | 29 | 32 | 31 | 28 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 7 | SSW 7 | SW 7 | SW 6 | SW 12 | SSW 12 | SSW 13 | SSW 6 | SSW 12 | SSW 12 | SSW 12 | SW 18 |
| kJ | 44 | 36 | 595 | 581 | 823 | 733 | 676 | 521 | 368 | 128 | 124 | 127 | 91 | 216 | 180 | 215 | 47 | 187 | 125 | 203 | 528 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SSW 6 | SSW 6 | SW 13 | SSW 13 | SW 13 | SW 12 | S 6 | W 6 | SSW 6 | SSW 13 | S 6 | SW 16 | SW 19 | SSW 11 |
| kJ | 129 | 219 | 48 | 45 | 44 | 38 | 33 | 42 | 75 | 347 | 304 | 245 | 220 | 39 | 28 | 31 | 215 | 29 | 201 | 284 | 145 |
Swell 3 Height (m) Direction Period (s) | SW 20 | SW 20 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 10 | S 20 | SW 20 | SW 20 | SW 20 | SW 18 | SW 18 | S 6 | SW 18 | SW 17 | SW 17 | S 6 | SW 15 | WSW 7 |
| kJ | 186 | 186 | 40 | 40 | 33 | 33 | 17 | 8 | 8 | 15 | 15 | 15 | 84 | 83 | 28 | 152 | 227 | 222 | 20 | 106 | 15 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SSW 7 | — | — | WSW 7 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 176 | — | — | 58 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 149 | 0 | 0 | 16 | 0 | 0 | 16 | 0 | 0 | 15 | 0 | 7 | 15 | 15 | 0 | 143 | 0 | 0 | 143 | 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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