Surf Forecasts:
Cabo Blanco surf forecast from 1 Sep 2026:
- Best quality surf: Friday 4 Sep, 1AM (local time) - 3ft (0.9m), 18s period, SW swell with cross-offshore 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★+): Monday 31 Aug, 10PM (local time) - 3ft (0.9m), 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 31) at 10PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.7m and 6s. 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 (Mon 31st Aug) | 3ft (0.9m) 13s |
| Best Surf | 1AM (Fri 4th Sep) | 3ft (0.9m) 18s |
| 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, surfers, Rusty here. Let’s get into it. We’re looking at a pretty solid run of surf coming up for Cabo Blanco. The water is sitting at a warm 86°F, which is a touch warmer than normal for this time of year, so you might not need a full wetsuit.
The pattern starts off a bit messy. Monday morning the 31st has some small 3ft SW swell (combined energy of 371), but that risk of thunderstorms and a cross-wind makes it a scratch for me. The afternoon is similar, just poor.
The real action starts to fire up on Tuesday morning September 1st. We’ve got a clean 3ft SW swell rolling in with glassy conditions. That’s the kind of start you want.
Then, the standout window is hands down Friday morning September 4th. It’s going to be glassy and calm, with a clean 4ft SW groundswell coming in at 17 seconds. The combined energy is a solid 962, which is proper moderate energy. This is the pick of the whole forecast. The swell direction is locking in perfectly with what this spot loves. Crowds are possible here, so get in early.
Saturday morning the 5th is also a cracker: 4ft SW swell, glassy, calm winds. That’s a step up in size but still very manageable for most. The energy is 871 – still strong. Sunday morning the 6th keeps the trend going with 4ft SW swell and glassy conditions.
As we move into the second week, the consistency drops off a little but the windows are still there. Tuesday morning September 8th brings a clean 3ft SSW swell with a light cross-offshore breeze. Thursday morning the 10th is also a standout morning with 3ft SW swell and glassy conditions, and the energy is 704. The afternoons are mostly a write-off with thunderstorms and onshore wind.
The last few days of the forecast, from the 13th onward, the swell gets smaller and the energy drops into the 200s, but there are still some clean, glassy mornings to be had if you’re desperate for a paddle. A long-period 1ft SW swell on Monday morning the 14th is a bit of a tease but it’s there.
Best bet: Lock in Friday morning September 4th. It’s the highlight of the whole run.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Mon night. Warm (max 29°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Sat afternoon. Warm (max 29°C on Thu morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 13 | SSW 13 | SSW 13 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SW 17 | SW 16 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 347 | 304 | 295 | 220 | 216 | 180 | 215 | 227 | 222 | 203 | 350 | 528 | 772 | 841 | 728 | 803 | 793 | 666 | 623 | 614 | 463 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | glassy | glassy | cross-on | cross | glassy | on | cross | glassy | on | cross-off | glassy | on | cross-off | glassy | on | cross | glassy | cross-on | glassy |
High Tide | 5:48PM2.86m | 6:05AM3.06m | 6:27PM2.80m | 6:44AM3.00m | 7:09PM2.69m | 7:28AM2.90m | 7:58PM2.56m | 8:19AM2.76m | 8:56PM2.42m | 9:21AM2.62m | 10:08PM2.34m | 10:36AM2.54m | 11:31PM2.36m | ||||||||
Low Tide | 11:42AM0.28m | 11:51PM0.30m | 12:20PM0.28m | 00:29AM0.37m | 1:02PM0.34m | 1:11AM0.47m | 1:49PM0.43m | 2:00AM0.60m | 2:45PM0.55m | 3:00AM0.74m | 3:53PM0.65m | 4:14AM0.84m | 5:10PM0.68m | ||||||||
 | |  |  | | | | |  |  | | | | | | | | |  | | | |
 | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — |
mm | 3 | 8 | 12 | — | 3 | 2 | — | 3 | — | — | 3 | 1 | — | 7 | 2 | 1 | 12 | 1 | 1 | 9 | 5 |
Temp °C | 29 | 28 | 26 | 27 | 27 | 26 | 28 | 28 | 27 | 29 | 28 | 27 | 29 | 28 | 26 | 29 | 28 | 26 | 28 | 28 | 25 |
Feels °C | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 31 | 31 | 33 | 32 | 30 | 33 | 32 | 30 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SSW 13 | SSW 13 | SW 12 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 |
| kJ | 347 | 304 | 295 | 220 | 216 | 180 | 215 | 215 | 187 | 125 | 203 | 528 | 772 | 841 | 728 | 803 | 793 | 666 | 623 | 614 | 463 |
Swell 2 Height (m) Direction Period (s) | S 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SW 16 | SW 19 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | S 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 |
| kJ | 18 | 34 | 41 | 40 | 36 | 29 | 27 | 31 | 34 | 203 | 350 | 200 | 176 | 173 | 106 | 30 | 43 | 41 | 41 | 38 | 30 |
Swell 3 Height (m) Direction Period (s) | WSW 5 | SW 20 | W 10 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SSW 7 | SW 15 | W 9 | W 9 | W 9 | W 8 | SSW 10 | SSW 9 | W 9 | WNW 9 | W 8 | WNW 8 |
| kJ | 6 | 15 | 8 | 84 | 83 | 82 | 152 | 227 | 222 | 25 | 106 | 14 | 14 | 14 | 12 | 38 | 17 | 14 | 15 | 5 | 13 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | WSW 10 | NW 3 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 33 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 0 | 0 | 15 | 7 | 0 | 152 | 7 | 0 | 16 | 0 | 0 | 143 | 0 | 0 | 16 | 15 | 0 | 15 | 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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