Surf Forecasts:
Roca Alta surf forecast from 12 Aug 2026:
- Best quality surf: Sunday 16 Aug, 12AM (local time) - 10ft (3.0m), 11s period, ENE swell with glassy winds.
- Most powerful swell: Sunday 16 Aug, 3AM (local time) - 10ft (3.0m), 11s period, ENE swell with 2,138 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 6AM (local time) - 5.5ft (1.7m), 10s period with ENE swell.
Best Forecast Surf Conditions for Roca Alta this week:
The surf forecast for Roca Alta over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 6AM. The primary swell is predicted to be 1.7m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Roca Alta in the next 16 days are 3.0m 11s and forecast to arrive on Sunday (Aug 16) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 17) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 12th Aug) | 5.5ft (1.7m) 10s |
| Best Surf | 12AM (Sun 16th Aug) | 10ft (3.0m) 11s |
| Most Powerful | 3AM (Sun 16th Aug) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Roca Alta over the next 16 days.
The Lowdown
Alright, let’s get into this. We’re looking at just one break here, Roca Alta, so the whole story is about that reef. There’s a bit of a wait for the first decent surf, which doesn’t show up until the 12th, so plan around that. The overall vibe is a mix of building and fading swell with a few clean windows.
The first real chance is Wednesday morning, 12th August. We’ve got 1.8m of ENE swell, period around 10 seconds, giving it moderate energy (609). The wind is light from the NW, but it’s cross-onshore, so expect a little texture on the surface. It’s a marginal call. Then Thursday morning, 13th August, the wind swings to dead calm – glassy. The swell is 1.6m from the ENE, 9-second period, with moderate energy (398). That’s a very clean setup for a reef. Thursday afternoon stays glassy with 1.5m waves.
The big one, the one you’ve got to be ready for, is Sunday morning, 16th August. The swell jumps to a solid 3.0m from the ENE, 10-second period, and the combined energy is a massive 1980. That is serious power. The wind is glassy from the WNW. This is top-tier surf for experienced surfers only. Over 2.5m, this reef is going to be heavy, and the long period means the sets will have a lot of punch. Water temp is 29°, which is normal for this time of year.
Sunday afternoon gets wind-affected, and the swell starts to drop. Monday, 17th August, still has 2.5m in the morning but the wind is a moderate cross-shore, so it’s messy. After that, the quality drops off. There’s a small, clean window on Saturday morning, 22nd August, with a glassy 1.3m ENE swell, but the energy is low (217). It’s surfable but nothing to get excited about. The rest of the second week is mostly small, onshore, or choppy, with very little to recommend.
So, the standout here is the early session on Sunday, 16th August – big, glassy, and powerful. That’s the one. The first week has a couple of clean days too, but the second week is a long, quiet stretch.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Tue night. Warm (max 29°C on Tue afternoon, min 25°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 261mm), heaviest during Sun afternoon. Warm (max 29°C on Fri afternoon, min 23°C on Sun morning). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | ENE 8 | ENE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 10 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | NE 10 | NE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 309 | 362 | 609 | 508 | 469 | 398 | 339 | 202 | 207 | 212 | 302 | 798 | 1093 | 1980 | 1980 | 1599 | 1358 | 1172 | 846 | 573 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | cross-on | on | cross-off | glassy | glassy | cross | cross | on | cross | cross | cross-on | glassy | glassy | cross | cross-off | cross | cross | cross |
High Tide | 10:33PM0.40m | 12:16PM0.08m | 11:30PM0.35m | 1:27PM0.12m | 00:32AM0.30m | 2:26PM0.18m | 1:40AM0.24m | 3:17PM0.23m | 2:52AM0.19m | 4:01PM0.27m | 4:03AM0.16m | 4:42PM0.31m | ||||||||
Low Tide | 6:33AM-0.06m | 4:03PM0.04m | 7:17AM-0.05m | 5:44PM0.07m | 7:58AM-0.04m | 7:37PM0.08m | 8:37AM-0.02m | 9:20PM0.06m | 9:12AM-0.01m | 10:43PM0.03m | 9:46AM0.01m | 11:50PM0.00m | ||||||||
 |  | | | | | | |  | | | | | |  | |  |  | |  | |
 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — |
 | 5:51 | — | — | 5:51 | — | — | 5:51 | — | — | 5:50 | — | — | 5:50 | — | — | 5:49 | — | — | 5:49 | — |
mm | 2 | 5 | 2 | 4 | 4 | 2 | 2 | 1 | — | 1 | 8 | 4 | 8 | 60 | 31 | 66 | 80 | 3 | 5 | 14 |
Temp °C | 29 | 27 | 29 | 28 | 26 | 28 | 29 | 27 | 29 | 29 | 27 | 27 | 27 | 25 | 24 | 23 | 24 | 24 | 24 | 24 |
Feels °C | 32 | 32 | 33 | 31 | 30 | 32 | 34 | 31 | 32 | 32 | 31 | 30 | 30 | 29 | 27 | 25 | 27 | 25 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 9 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 10 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 10 | NE 10 | NE 9 |
| kJ | 309 | 362 | 609 | 508 | 469 | 398 | 339 | 202 | 207 | 212 | 302 | 798 | 1093 | 1980 | 1980 | 1599 | 1358 | 1172 | 846 | 573 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 86 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 114 | 0 | 2 | 180 | 0 | 0 | 0 | 10 | 10 | 180 | 2 | 22 | 22 | 0 | 0 | 13 | 0 | 22 | 173 | 13 |
Best forecast wave conditions in Limon | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
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Information about the Roca Alta Surf forecast
The above surf forecast table for Roca Alta provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Roca Alta can be found by selecting the local surf guide option on the grey menu. Our Roca Alta 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 (Roca Alta) 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 Roca Alta 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 Limon? If you are looking for accommodation near Roca Alta, camping, hotels and holiday cottages in Limon, consider staying in Puerto Limon which is 1 km (1 miles) away. Other places in and around Limon where you can find information about places to rent, and car hire include Siquirres which is 52 km (32 miles) away, Turrialba, Guapiles and Changuinola.
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