Surf Forecasts:
Cabo Blanco surf forecast from 4 Sep 2026:
- Best quality surf: Friday 4 Sep, 10PM (local time) - 4ft (1.2m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 5 Sep, 1PM (local time) - 4.5ft (1.4m), 16s period, SW swell with 906 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 10PM (local time) - 4ft (1.2m), 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 04) at 10PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 0.5m and 11s. 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 1.4m 16s and forecast to arrive on Saturday (Sep 05) 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 4th Sep) | 4ft (1.2m) 16s |
| Best Surf | 10PM (Fri 4th Sep) | 4ft (1.2m) 16s |
| Most Powerful | 1PM (Sat 5th Sep) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright lads, Rusty here. Let’s run through the Cabo Blanco forecast.
We’ve got a solid run of surf ahead. The opening morning is a real beauty, with a clean, glassy start and a good, long-period SW groundswell pushing in. The water is sitting at 86°F, which is a touch warmer than normal for this time of year.
The standout session is hands down Friday morning, September 4th. There’s a sweet 4ft SW groundswell rolling in with a very long 17-second period, and the wind is glassy from the ESE. The combined energy is solid (926), and with the exposed SW-facing setup, it’s going to peel nicely. The crowd factor is there, so expect some company, but for clean, lined-up waves, this is the one to be on.
The surf keeps ticking over through the weekend. Saturday morning, September 5th, bumps up a touch to 4ft from the SW, with a 16-second period, and it’s absolutely dead calm – glassy as a mirror. This is another top pick. The energy is still strong (886). By Sunday morning, the swell drops a little to 4ft, but it’s still glassy and clean.
Heading into the new week, the surf eases. Monday and Tuesday mornings are still worth a paddle, with 3ft and 2ft swells respectively, and clean conditions. The combined energy drops into the moderate zone (around 428-457). Wednesday morning, September 9th, offers a small 3ft SSW swell with glassy conditions, but the energy is getting lower.
The second week sees surf shrink further, but the quality holds on the mornings. Thursday, September 10th brings a slight bump back up to 3ft from the SW, with glassy conditions and a nice 15-second period – that’s a promising little window. The following Friday and Saturday mornings also look clean, with waist-high sets and glassy winds. The swell gets very small by the 14th, down to 1ft, but the period jumps to 18 seconds, so you’ll get long, slow lines rather than any punch.
Late in the window, around Saturday, September 19th, the early morning looks clean again with a 2ft SW swell and a 19-second period, but it’s a long-range call, so keep an eye on it.
The afternoons are the letdown – the wind swings onshore or cross-onshore and the forecast flags poor or marginal conditions. Stick to the dawn patrols.
Overall, the first four days are the clear winners. The surf is consistent, the swell direction is bang on, and the winds will have you smiling.
Rusty.
Short Range ForecastHeavy rain (total 53mm), heaviest during Sun night. Warm (max 30°C on Fri morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Wed afternoon. Warm (max 29°C on Mon afternoon, min 26°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 18 | SW 16 | SW 16 | SSW 16 | SW 16 | SW 18 | SW 15 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 772 | 841 | 728 | 803 | 793 | 657 | 623 | 536 | 463 | 379 | 261 | 249 | 270 | 278 | 258 | 318 | 258 | 703 | 318 | 496 | 560 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross | glassy | on | cross-off | glassy | on | glassy | glassy | cross-on | cross | glassy | cross-on | cross |
High Tide | 8:56PM2.42m | 9:21AM2.62m | 10:08PM2.34m | 10:36AM2.54m | 11:31PM2.36m | 11:56AM2.55m | 00:47AM2.50m | 1:09PM2.66m | 1:51AM2.71m | 2:10PM2.80m | 2:43AM2.92m | 3:02PM2.93m | 3:29AM3.09m | ||||||||
Low Tide | 2:45PM0.55m | 3:00AM0.74m | 3:53PM0.65m | 4:14AM0.84m | 5:10PM0.68m | 5:38AM0.84m | 6:26PM0.60m | 6:55AM0.72m | 7:31PM0.46m | 7:59AM0.55m | 8:25PM0.31m | 8:53AM0.37m | 9:13PM0.20m | ||||||||
 |  |  | | | |  | | |  | |  | | | | | | | | | | |
 | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:36 | — | — | 6:35 | — |
mm | — | 7 | 3 | 1 | 5 | 7 | — | 14 | 16 | — | — | — | — | — | 1 | 1 | 5 | 3 | 3 | 9 | 3 |
Temp °C | 30 | 29 | 27 | 29 | 29 | 27 | 28 | 28 | 25 | 28 | 29 | 27 | 29 | 29 | 27 | 29 | 28 | 27 | 29 | 29 | 27 |
Feels °C | 34 | 33 | 32 | 32 | 33 | 31 | 33 | 32 | 29 | 32 | 33 | 31 | 33 | 33 | 32 | 32 | 31 | 31 | 32 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 6 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SSW 16 | SW 16 | SW 18 | SW 15 | SW 16 | SW 16 |
| kJ | 772 | 841 | 728 | 803 | 793 | 657 | 623 | 536 | 91 | 379 | 261 | 249 | 175 | 170 | 258 | 318 | 258 | 703 | 318 | 496 | 560 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | SW 14 | S 6 | SW 6 | SSW 18 | SSW 18 | SW 16 | SSW 12 | SW 12 | SSW 12 | S 11 | SW 18 | S 10 | SSW 6 |
| kJ | 140 | 138 | 82 | 77 | 23 | 29 | 77 | 99 | 463 | 29 | 43 | 211 | 270 | 278 | 94 | 67 | 94 | 37 | 249 | 50 | 20 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | W 8 | W 8 | SW 9 | SSW 10 | WNW 8 | WNW 8 | W 11 | WSW 6 | SSW 19 | S 6 | SSW 6 | S 6 | S 7 | WNW 10 | WNW 10 | WNW 10 | SSW 10 | WNW 10 | WNW 10 |
| kJ | 14 | 14 | 12 | 6 | 22 | 9 | 14 | 13 | 9 | 20 | 148 | 18 | 12 | 11 | 14 | 37 | 35 | 33 | 32 | 20 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 6 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 15 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 143 | 0 | 0 | 16 | 0 | 0 | 7 | 15 | 0 | 16 | 0 | 0 | 167 | 0 | 0 | 16 | 15 | 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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