Surf Forecasts:
Cabo Blanco surf forecast from 11 Sep 2026:
- Best quality surf: Friday 11 Sep, 4AM (local time) - 3.5ft (1.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 11 Sep, 4AM (local time) - 3.5ft (1.0m), 16s period, SW swell with 496 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 4AM (local time) - 3.5ft (1.0m), 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 Friday (Sep 11) at 4AM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 0.8m and 7s. 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 1.0m 16s and forecast to arrive on Friday (Sep 11) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
| Best Surf | 4AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 4AM (Fri 11th Sep) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let’s have a proper look at what’s headed our way over the next couple of weeks.
We’ve got a solid run of small but clean groundswell on the cards for Cabo Blanco. The water’s sitting at 86°F which is a touch warmer than normal for this time of year, so you’ll be comfy in a spring suit at most.
The first real standout kicks off on Friday morning, September 11th. We’re looking at a classic SW groundswell rolling in at 3ft with a very long 16-second period. The kicker? The wind is dead calm, glassy as a mirror. The energy’s moderate at 540 and with zero wind, those waves will be clean, lined up, and offering proper shape. For a spot that’s exposed to the SW and fairly consistent, this is your window. The swell direction is right in the sweet spot for this break.
Then on Wednesday morning, September 16th, another beauty lines up. Same SW groundswell, 3ft with a 16-second period, and again glassy conditions with barely a breath of wind. Wave energy is moderate at 543, and the forecast confidence is still good here. This is another morning to have your board waxed and ready.
Outside of those two mornings, the rest of the outlook is pretty average. The afternoons get messy with onshore breezes or a risk of thunderstorms, and the swell stays small – mostly between 2ft and 3ft. The period does drop to around 8 seconds on the 14th and again on the 24th, which kills the wave quality for a point like this. On the 19th and 20th, a stronger cross-onshore breeze picks up to 9-12 mph, and the wave energy spikes to 564 but it’s all chop and poor conditions – that setup looks more interesting for a kite than a paddle.
Cabo Blanco is your only break in this forecast, so there’s no need to switch spots. Just pick your morning windows carefully.
Rusty.
Short Range ForecastHeavy rain (total 57mm), heaviest during Thu night. Warm (max 29°C on Fri morning, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 25mm), heaviest during Sun night. Warm (max 28°C on Mon afternoon, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 8 | SW 19 | S 8 | SW 18 | SW 18 | SW 18 | SW 18 | SW 16 | SSW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 489 | 365 | 248 | 248 | 211 | 144 | 140 | 94 | 183 | 113 | 152 | 258 | 249 | 312 | 376 | 447 | 353 | 305 | 301 | 293 | 183 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | on | cross-off | glassy | on | off | glassy | glassy | glassy | glassy | cross-on | cross-off | cross | cross-on | cross-off | glassy | cross-on | cross-off |
High Tide | 3:48PM3.02m | 4:11AM3.19m | 4:31PM3.05m | 4:50AM3.21m | 5:12PM3.01m | 5:28AM3.15m | 5:51PM2.92m | 6:05AM3.03m | 6:29PM2.77m | 6:42AM2.86m | 7:08PM2.59m | 7:21AM2.67m | 7:50PM2.40m | ||||||||
Low Tide | 9:40AM0.22m | 9:56PM0.14m | 10:23AM0.13m | 10:37PM0.14m | 11:04AM0.11m | 11:16PM0.20m | 11:43AM0.16m | 11:54PM0.31m | 12:21PM0.27m | 00:31AM0.46m | 1:00PM0.42m | 1:10AM0.63m | 1:41PM0.59m | 1:51AM0.81m | |||||||
 |  |  | | | | | | |  | | | | | |  | |  | | |  | |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 6:35 | — | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — |
mm | — | 3 | 2 | 1 | 6 | 6 | 1 | 17 | 5 | — | 2 | 3 | — | 3 | 4 | 2 | 6 | 7 | — | 4 | — |
Temp °C | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 28 | 25 | 27 | 28 | 26 | 28 | 28 | 27 | 28 | 27 | 26 | 28 | 28 | 26 |
Feels °C | 33 | 33 | 32 | 33 | 33 | 31 | 33 | 32 | 29 | 31 | 33 | 30 | 32 | 32 | 32 | 32 | 30 | 30 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 14 | SSW 8 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | S 8 | S 8 | SSW 8 | SSW 9 | SSW 9 | SW 16 | SSW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 489 | 365 | 248 | 248 | 72 | 106 | 101 | 94 | 125 | 113 | 103 | 107 | 101 | 106 | 376 | 447 | 353 | 305 | 301 | 293 | 183 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SSW 8 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 18 | SW 18 | SW 18 | SW 18 | SSW 9 | SSW 8 | SSW 7 | SSW 7 | SSW 6 | S 9 | S 9 |
| kJ | 49 | 48 | 42 | 51 | 211 | 144 | 140 | 84 | 82 | 73 | 152 | 258 | 249 | 312 | 103 | 87 | 63 | 58 | 57 | 76 | 53 |
Swell 3 Height (m) Direction Period (s) | W 5 | SSW 19 | S 10 | SSW 18 | SW 18 | SSW 18 | SSW 21 | SSW 16 | SW 19 | WSW 5 | SW 12 | SW 12 | SW 11 | SW 14 | SSW 11 | W 12 | W 12 | SSW 23 | SW 22 | WSW 6 | WSW 6 |
| kJ | 2 | 37 | 8 | 31 | 79 | 30 | 44 | 50 | 183 | 10 | 37 | 35 | 33 | 30 | 11 | 11 | 12 | 54 | 78 | 14 | 13 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 16 | 0 | 0 | 16 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 7 | 143 | 0 | 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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