Surf Forecasts:
Cabo Blanco surf forecast from 25 Aug 2026:
- Best quality surf: Friday 28 Aug, 10PM (local time) - 3ft (0.9m), 18s period, SW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 4PM (local time) - 4.5ft (1.3m), 16s period, SW swell with 823 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 10AM (local time) - 1.5ft (0.5m), 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 Tuesday (Aug 25) at 10AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 0.6m 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 1.3m 16s and forecast to arrive on Saturday (Aug 29) at 4PM. 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+) | 10AM (Tue 25th Aug) | 1.5ft (0.5m) 16s |
| Best Surf | 10PM (Fri 28th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 4PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Cabo Blanco over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's talk about the surf.
Alright, let's be straight with you. This outlook covers a single spot: Cabo Blanco. The energy is moderate overall, with the combined swell energy readings mostly in the 200 to 900 range (moderate to strong). We've got a real long-range, long-period groundswell (15-20 seconds) running, which is great for shape and power, but at a point break like Cabo Blanco, it should set up nicely.
For Tuesday the 25th, we kick it off with an early glass-off. The morning starts with a risk of thunderstorms but near-calm southerly wind making it glassy. The swell is a tiny 2ft from the SW with a very long 16-second period. With combined energy around 220 (weak-moderate), it’s small but clean for a warm-up. The afternoon turns onshore, so hit it early.
Wednesday the 26th brings another glassy window. A light NNW breeze keeps it clean in the morning with 2ft of SW swell, 15-second period, and energy around 206 (weak-moderate). Conditions turn choppy by the afternoon.
Thursday the 27th is a bit messy, with a light cross-shore wind and a small 1ft SW swell at a very long 18-second period. It’s marginal, but the energy is still there at 207 (weak-moderate). The afternoons are looking poor through this stretch.
Friday the 28th morning is a gem – flat calm, glassy, with a 2ft SW swell. That long 20-second period is a beautiful thing. The combined energy ticks up to 355 (moderate). It’s small but perfect. The afternoon gets a bit of onshore breeze.
Now, here’s the first real standout. Saturday the 29th morning is your best bet in the first week. Glassy conditions with a calm wind from the SE. The swell bumps up to a clean 4ft from the SW, 16-second period, and the energy jumps to a solid 747 (strong). That is clean, punchy, and would be a fantastic session.
Sunday the 30th morning is also very good. Glassy again with a light westerly breeze, 4ft of SW swell, 14-second period, and strong energy at 646. Another beautiful morning.
The middle of the week (31st to 1st Sept) is a write-off with onshore winds and poor surf quality. The energy drops a bit, and it’s choppy.
But then we get a second wind. Wednesday the 2nd of September afternoon is a real standout. It’s a risk of thunderstorms, but the wind is coming from the ESE – that's clean cross-offshore. The swell is only 2ft from the SW, but the period is 17 seconds, and the combined energy spikes to 520 (strong). The forecast says "expect very good surf conditions." That is a sneaky-good, clean afternoon session with a lot of push for its size.
Thursday the 3rd of September morning continues with that same clean cross-offshore wind and 2ft of SW swell, 16-second period. Energy is 405 (moderate). Worth a paddle.
Then we have another clear winner. Friday the 4th of September morning is a top pick. Flat calm, glassy, with a 4ft SW swell and an 18-second period. The energy is pumping at 882 (strong). That is a high-quality, long-period groundswell with zero wind. That's the one to write in the diary.
The rest of the second week (5th to 9th) shows smaller early morning windows of glassy or clean conditions with swell around 3ft to 4ft, but the wind gets tricky in the afternoons. The 6th and 7th of September both have calm, clear mornings with clean 4ft and 3ft swells respectively – solid options for a dawn session.
Overall, Saturday the 29th of August morning and Friday the 4th of September morning are the standouts. Clean, glassy, and decent swell. The near-term stuff (this week) is reliable; the early September call looks promising but needs to firm up. There are no gaps with no surf; the swell is consistent, just some afternoons are blown out.
Rusty.
Short Range ForecastHeavy rain (total 57mm), heaviest during Wed night. Warm (max 29°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 41mm), heaviest during Sun night. Warm (max 29°C on Fri morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 | SSW 16 | SSW 15 | SW 15 | S 7 | SSW 6 | SW 18 | SW 18 | SW 17 | SW 20 | SW 20 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 7 | SW 13 |
Wave Graph | |||||||||||||||||||||
129 | 171 | 158 | 106 | 94 | 140 | 81 | 81 | 140 | 186 | 186 | 595 | 581 | 823 | 666 | 614 | 521 | 368 | 347 | 355 | 245 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | on | cross | cross | cross-on | glassy | glassy | on | glassy | glassy | on | cross-on | glassy | cross-on | cross | glassy | on | cross-on |
High Tide | 1:56PM2.43m | 2:34AM2.42m | 2:41PM2.56m | 3:13AM2.60m | 3:21PM2.69m | 3:48AM2.77m | 3:58PM2.79m | 4:22AM2.91m | 4:34PM2.86m | 4:55AM3.01m | 5:11PM2.88m | 5:29AM3.06m | 5:48PM2.86m | ||||||||
Low Tide | 8:18PM0.67m | 8:34AM0.81m | 8:58PM0.54m | 9:15AM0.66m | 9:34PM0.43m | 9:53AM0.52m | 10:08PM0.34m | 10:30AM0.40m | 10:42PM0.29m | 11:05AM0.32m | 11:16PM0.28m | 11:42AM0.28m | 11:51PM0.30m | ||||||||
6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | 6:44 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:42 | — | — | 6:40 | — | — | 6:40 | — | |
mm | 7 | 10 | 4 | — | 8 | 14 | — | 9 | 5 | 3 | 7 | — | — | 8 | 4 | 1 | 7 | 11 | 5 | 13 | 39 |
Temp °C | 29 | 29 | 27 | 29 | 29 | 25 | 29 | 28 | 26 | 29 | 29 | 27 | 29 | 28 | 27 | 29 | 29 | 26 | 28 | 27 | 25 |
Feels °C | 33 | 33 | 31 | 33 | 33 | 29 | 33 | 31 | 30 | 33 | 33 | 32 | 33 | 31 | 31 | 32 | 32 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | S 9 | SSW 16 | S 7 | S 7 | S 7 | SSW 6 | S 6 | S 6 | S 7 | SSW 6 | SSW 16 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 6 | SW 13 | SW 13 | SW 6 |
55 | 171 | 37 | 74 | 94 | 140 | 52 | 41 | 32 | 35 | 181 | 595 | 581 | 823 | 666 | 614 | 521 | 109 | 347 | 253 | 134 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | S 8 | SSW 15 | SW 15 | SSW 15 | SSW 14 | WSW 6 | SW 18 | SW 17 | SW 16 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 14 | W 10 | SW 20 | SW 13 |
129 | 37 | 158 | 106 | 84 | 81 | 34 | 81 | 140 | 129 | 28 | 36 | 43 | 57 | 42 | 33 | 57 | 368 | 2 | 15 | 245 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 11 | SW 11 | SSW 11 | SSW 19 | SW 18 | SW 15 | WSW 6 | SW 20 | SW 20 | S 11 | SSW 11 | S 10 | S 10 | S 10 | S 10 | W 11 | SW 20 | W 13 | W 8 |
36 | 30 | 30 | 30 | 11 | 36 | 81 | 76 | 10 | 186 | 186 | 38 | 40 | 31 | 31 | 17 | 2 | 2 | 15 | 3 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 7 | — | — | WSW 6 | W 5 | — | — | — | — | — | — | — | — | — | SW 7 | SW 7 | — |
— | — | — | — | 65 | — | — | 26 | 9 | — | — | — | — | — | — | — | — | — | 189 | 355 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 143 | 15 | 0 | 15 | 15 | 7 | 16 | 15 | 0 | 7 | 0 | 0 | 143 | 0 | 0 | 15 | 0 | 7 | 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.











