Surf Forecasts:
Roca Alta surf forecast from 5 Sep 2026:
- Best quality surf: Thursday 10 Sep, 3AM (local time) - 7ft (2.1m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 3AM (local time) - 7ft (2.1m), 10s period, ENE swell with 902 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 6PM (local time) - 4ft (1.2m), 8s 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 Saturday (Sep 05) at 6PM. The primary swell is predicted to be 1.2m and 8s period. 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 2.1m 10s and forecast to arrive on Thursday (Sep 10) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 5th Sep) | 4ft (1.2m) 8s |
| Best Surf | 3AM (Thu 10th Sep) | 7ft (2.1m) 10s |
| Most Powerful | 3AM (Thu 10th Sep) | 7ft (2.1m) 10s |
Table - best surf conditions forecast for Roca Alta over the next 16 days.
The Lowdown
Alright folks, Rusty here again, givin' it to you straight. We're lookin' at a slow start at Roca Alta—small, weak, short-period swell from the ENE with the wind all wrong. The combined swell energy is down around 157 (weak) and the waves are barely a couple feet. Not much to get excited about through the 8th of September.
Things pick up a bit on Wednesday the 9th of September—swell about 6ft from the ENE, with combined energy jumpin' to 643 (moderate). Still, the wind is cross-onshore, so it's a bit of a mess. You might get a couple, but it's nothin' special.
Now, Thursday the 10th of September is the one to circle. Light offshore breeze, clean conditions, and the swell bumps to about 7ft from the ENE with a 10-second period. The combined energy is sittin' at 849 (strong). That's the best look we get in the whole 16 days. The wave direction ain't perfect for Roca Alta's optimum NE, but it's close enough with that glassy wind to really get the reef workin'. This is expert territory—that size over a reef with that push is no joke.
Friday the 11th goes downhill quick. Swell drops to about 6ft, energy back under 500 (moderate), and cross-on wind messin' up the surface. The weekend and early next week are pretty flat, with small waves and onshore or cross-onshore breezes.
Tuesday the 15th of September morning brings a bit of hope—glassy conditions, swell around 5ft, 10-second period, and combined energy at 480 (moderate). That glass is a beaut, gives you smooth faces even if it ain't big. Wednesday the 16th morning is glassy too, but the swell is down to about 4ft.
From there, it's a slow fade to tiny, weak dribble. By the 18th and 19th, the combined energy is down below 150 (weak) and the swell is barely 3ft. Not even worth waxin' up for.
So here's the takeaway: your best bet is the morning of Thursday the 10th of September. Clean, solid, and ready for the experienced crew. The rest is a whole lotta waitin'.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Fri night. Warm (max 29°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 51mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 153 | 157 | 157 | 149 | 161 | 161 | 120 | 157 | 165 | 98 | 136 | 179 | 295 | 643 | 723 | 815 | 849 | 638 | 520 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | cross | cross | on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross | cross-off | cross-on | cross-off |
High Tide | 7:02AM0.08m | 6:45PM0.44m | 7:48AM0.08m | 7:34PM0.43m | 8:38AM0.09m | 8:25PM0.41m | 9:34AM0.12m | 9:18PM0.36m | 10:34AM0.15m | 10:16PM0.31m | 11:35AM0.18m | 11:22PM0.25m | |||||||
Low Tide | 1:46AM-0.06m | 11:14AM0.01m | 2:31AM-0.06m | 12:06PM0.01m | 3:17AM-0.05m | 1:04PM0.01m | 4:02AM-0.04m | 2:09PM0.03m | 4:46AM-0.02m | 3:27PM0.05m | 5:28AM0.00m | 5:02PM0.07m | |||||||
 |  | | | | | |  | | | | | | | | | |  | | |
 | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — |
 | — | — | 5:38 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:36 | — | — | 5:36 | — |
mm | 4 | 1 | 2 | 3 | 1 | 2 | 3 | — | 1 | 1 | — | 2 | 14 | 9 | 6 | 17 | 1 | 1 | 2 |
Temp °C | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 27 | 27 | 26 | 29 | 29 | 27 |
Feels °C | 32 | 33 | 33 | 32 | 32 | 32 | 31 | 32 | 32 | 32 | 32 | 32 | 31 | 30 | 31 | 30 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | ENE 10 | ENE 9 | ENE 10 | ENE 10 | ENE 10 | ENE 9 |
| kJ | 153 | 157 | 157 | 149 | 161 | 161 | 120 | 157 | 165 | 98 | 136 | 179 | 295 | 643 | 723 | 815 | 849 | 638 | 520 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 22 | 114 | 10 | 22 | 22 | 0 | 14 | 22 | 3 | 22 | 22 | 2 | 22 | 13 | 3 | 0 | 130 | 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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