Surf Forecasts:
The Reef (Culebra) surf forecast from 10 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 11AM (local time) - 5ft (1.6m), 7s period, E swell with 250 kJ wave energy.
Best Forecast Surf Conditions for The Reef (Culebra) this week:
The most powerful waves expected at The Reef (Culebra) in the next 16 days are 1.6m 7s and forecast to arrive on Thursday (Sep 10) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 8s period and expected on Thursday (Sep 10) at 2PM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 10th Sep) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for The Reef (Culebra) over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s cookin’ for The Reef at Culebra.
Look, straight up, this is a tough stretch. The whole 16-day forecast is a write-off for any decent paddling session. There simply isn’t a single window with surf worth chasing. The waves are either too small, too short period, or the wind is just ruining any chance of a good shape.
Starting with Thursday the 10th, we’ve got a bit of swell height at 5 ft, but it’s coming from the east with a short 7 second period and a fresh 19 mi/h cross-offshore wind. The combined energy is weak at 282 (actually moderate, but the quality is poor), so it’s messy and not offering anything for a surfer. That’s the theme for the whole first week. By Friday the 11th, the swell drops to 1 ft and stays tiny. Saturday the 12th through Tuesday the 15th is all tiny waves, mostly under 2 ft, with moderate to fresh cross-shore winds making it lumpy. The swell energy is in the low double digits or teens, which is basically flat. Wednesday the 16th sees a slight lift to 5 ft, but it’s a 6-second windswell from the east, and still cross-shore winds, so poor conditions.
Moving into the second week, from Thursday the 17th right through to Friday the 25th of September, it’s the same story. The swell heights hover around 0.6 ft to 2 ft. The swell energy never gets above 82, which is weak. There are a few cleaner windows with cross-offshore breezes, but with waves that tiny, you’d be on a foamie just for a paddle. The long-period (11-12 second) swells that do appear on the 17th, 18th, 19th, 20th, and 25th are from the north-northeast, which is offshore for Culebra, and they are clean, but the swell size is negligible at 0.6 ft to 2 ft. Not enough to break properly.
So, there are no standouts here. No time to grab a board. This is a classic flat spell for the area. The water temperature is about average for the time of year, but you won’t be needing a wetsuit for the surf, just a towel for a swim. The only positive I can offer is that forecasts can always change, but as it stands, leave the quiver at home.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Wed night. Warm (max 29°C on Thu afternoon, min 28°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Sun night. Warm (max 28°C on Sat night, min 27°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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) | E 6 | E 7 | E 8 | NNE 8 | NNE 8 | NNE 8 | E 8 | N 7 | ENE 4 | E 5 | E 5 | E 5 | E 5 | ENE 9 | NNE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 211 | 250 | 245 | 24 | 24 | 24 | 32 | 10 | 26 | 88 | 71 | 67 | 49 | 16 | 11 | 15 | 7 | 13 | 14 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 7:36AM0.32m | 8:26PM0.39m | 8:34AM0.36m | 9:00PM0.37m | 9:27AM0.39m | 9:31PM0.34m | 10:16AM0.40m | 10:01PM0.30m | 11:04AM0.40m | 10:29PM0.27m | 11:52AM0.39m | 10:58PM0.25m | |||||||
Low Tide | 2:17AM0.14m | 1:58PM0.07m | 2:48AM0.12m | 2:56PM0.09m | 3:18AM0.10m | 3:53PM0.12m | 3:47AM0.09m | 4:48PM0.14m | 4:17AM0.07m | 5:44PM0.16m | 4:48AM0.06m | 6:41PM0.17m | |||||||
 |  |  | | |  |  | | | | | | | | |  | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:29 | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — |
mm | 8 | 3 | — | 3 | — | — | — | — | — | 3 | — | 2 | 4 | 3 | — | 1 | 1 | 2 | 4 |
Temp °C | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 27 | 27 | 29 | 28 | 27 | 30 | 28 | 28 | 28 | 26 | 27 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | NE 11 | NNE 10 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | E 8 | N 7 | SE 6 | N 6 | NNE 10 | ENE 10 | ENE 9 | ENE 9 | NNE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 |
| kJ | 30 | 31 | 29 | 24 | 24 | 24 | 32 | 10 | 16 | 3 | 9 | 18 | 29 | 16 | 11 | 15 | 7 | 13 | 14 |
Swell 2 Height (m) Direction Period (s) | N 10 | N 6 | NE 10 | N 13 | SE 8 | E 8 | N 8 | NE 11 | ESE 8 | NNE 10 | N 6 | NNE 10 | NNE 9 | NNE 8 | NE 11 | NNE 7 | N 7 | N 6 | N 10 |
| kJ | 7 | 1 | 4 | 3 | 3 | 1 | 11 | 5 | 12 | 10 | 3 | 9 | 15 | 13 | 5 | 5 | 4 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | N 6 | — | — | — | — | N 12 | NE 9 | E 8 | N 7 | N 14 | N 13 | N 13 | NNE 12 | NE 12 | — | NE 11 | NE 10 | NE 10 | E 13 |
| kJ | 1 | — | — | — | — | 3 | 3 | 1 | 9 | 4 | 3 | 3 | 14 | 5 | — | 5 | 4 | 4 | 3 |
Wind waves Height (m) Direction Period (s) | E 6 | E 7 | E 8 | E 6 | E 6 | E 6 | E 5 | E 6 | ENE 4 | E 5 | E 5 | E 5 | E 5 | E 5 | E 6 | E 5 | E 5 | E 6 | E 6 |
| kJ | 211 | 250 | 245 | 117 | 101 | 101 | 59 | 83 | 26 | 88 | 71 | 67 | 49 | 62 | 69 | 48 | 97 | 80 | 86 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 452 | 79 | 79 | 98 | 457 | 79 | 139 | 520 | 878 | 414 | 487 | 871 | 74 | 487 | 270 | 82 | 487 | 454 | 68 |
Best forecast wave conditions in Puerto Rico | |||||||||||||||||||
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Information about the The Reef (Culebra) Surf forecast
The above surf forecast table for The Reef (Culebra) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Reef (Culebra) can be found by selecting the local surf guide option on the grey menu. Our The Reef (Culebra) 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 (The Reef (Culebra)) 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 The Reef (Culebra) 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.
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