Surf Forecasts:
Roca Alta surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 6AM (local time) - 6.5ft (2.0m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 6AM (local time) - 6.5ft (2.0m), 10s period, ENE swell with 748 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 6PM (local time) - 2.5ft (0.7m), 7s period with NE 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 (Sep 02) at 6PM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Roca Alta in the next 16 days are 2.0m 10s and forecast to arrive on Wednesday (Sep 09) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (Sep 06) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Wed 2nd Sep) | 2.5ft (0.7m) 7s |
| Best Surf | 6AM (Wed 9th Sep) | 6.5ft (2.0m) 10s |
| Most Powerful | 6AM (Wed 9th Sep) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Roca Alta over the next 16 days.
The Lowdown
Hey crew, Rusty here. Let’s break down the surf ahead for Roca Alta. This is a reef that needs experience, and we’ve got a slow start before things light up.
The first few days are flat and messy. Starting Wednesday the 2nd and Thursday the 3rd, we’ve got tiny waves around 3 to 3 feet from the ENE, with a short 7 to 8-second period. The energy is weak (93 to 113). Thursday morning goes glassy, so you might find a clean little ripple, but it’s not worth chasing.
From Friday the 4th through Monday the 7th, it’s the same story: waist-high or smaller, cross-onshore winds, and poor conditions. The energy builds a bit (up to 202) but the quality is trash for this exposed reef. Don't bother.
Tuesday the 8th is still onshore and average. Then Wednesday the 9th brings the first real change. Swell jumps to a solid 6 to 7 feet from the ENE, with a 10-second period. The combined energy hits 798. Still, cross-onshore winds keep it from being perfect, but the ocean has some real power.
The absolute standout is Thursday morning the 10th. This is the session. We’ve got 6 to 7 feet of ENE swell with a 10-second period and glassy, clean conditions. The combined energy is pumping at 849. That’s serious power for this reef. The wind is light and glassy – perfect. This is strictly for the advanced crew at this size. The swell is a touch off the ideal NE direction, but with that glass, you’re going to get clean, lined-up reef waves. It gets crowded when it’s good, so expect a few locals out.
Friday the 11th and Saturday the 12th drop off. Swell backs to 4 to 5 feet, cross-onshore winds return, and it’s back to marginal. Sunday the 13th is similar – poor conditions and smaller.
Looking into the second week: Monday morning the 14th offers a clean window with glassy conditions and swell around 4 feet. The energy is 238 – fun-sized and clean for a longer board.
Then Tuesday morning the 15th is another standout. Swell bumps back to 5 to 6 feet from the ENE with a 10-second period and glass. The combined energy is 544. This is another excellent window for the experienced surfer, just keep an eye on the long-range forecast.
Wednesday the 16th and Thursday the 17th fade back to small, onshore, and inconsistent. Thursday the 17th morning is glassy but the swell is tiny, barely 3 feet.
So, clear as mud? The first week is mostly a dud until Thursday the 10th – that’s the one. Second week has clean, punchy mornings on Monday the 14th and Tuesday the 15th. Don’t sleep on it.
Rusty, out.
Short Range ForecastModerate rain (total 12mm), heaviest on Wed night. Warm (max 29°C on Wed morning, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 18mm), heaviest on Sat night. Warm (max 29°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 7 | ENE 7 | ENE 10 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 98 | 68 | 70 | 151 | 108 | 113 | 103 | 153 | 202 | 192 | 171 | 175 | 158 | 166 | 202 | 187 | 192 | 165 | 133 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | glassy | glassy | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross-off | glassy | on | cross-off |
High Tide | 4:42AM0.09m | 4:25PM0.37m | 5:33AM0.08m | 5:10PM0.41m | 6:18AM0.08m | 5:57PM0.44m | 7:02AM0.08m | 6:45PM0.44m | 7:48AM0.08m | 7:34PM0.43m | 8:38AM0.09m | 8:25PM0.41m | |||||||
Low Tide | 11:24PM-0.01m | 8:57AM0.04m | 00:14AM-0.04m | 9:38AM0.03m | 1:00AM-0.06m | 10:24AM0.02m | 1:46AM-0.06m | 11:14AM0.01m | 2:31AM-0.06m | 12:06PM0.01m | 3:17AM-0.05m | 1:04PM0.01m | |||||||
 |  | |  | | | |  | |  | | | |  | | | | | | |
 | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — |
 | — | — | 5:39 | — | — | 5:39 | — | — | 5:38 | — | — | 5:38 | — | — | 5:37 | — | — | 5:37 | — |
mm | — | — | — | 5 | — | — | 3 | 1 | 3 | 2 | 3 | 3 | 5 | — | — | 3 | 2 | — | — |
Temp °C | 26 | 29 | 28 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 28 | 26 | 29 | 28 | 27 | 29 | 29 | 27 |
Feels °C | 30 | 32 | 31 | 32 | 32 | 32 | 31 | 31 | 31 | 32 | 32 | 30 | 30 | 32 | 31 | 32 | 33 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 10 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 98 | 68 | 70 | 151 | 108 | 113 | 103 | 153 | 202 | 192 | 171 | 175 | 158 | 166 | 202 | 187 | 192 | 165 | 133 |
Swell 2 Height (m) Direction Period (s) | ENE 13 | ENE 11 | ENE 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 17 | 25 | 40 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 10 | 22 | 128 | 0 | 0 | 128 | 10 | 22 | 22 | 10 | 22 | 22 | 10 | 22 | 123 | 0 | 0 | 123 | 0 |
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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