Surf Forecasts:
The Reef (Culebra) surf forecast from 31 Aug 2026:
- Best quality surf: Monday 31 Aug, 5PM (local time) - 3ft (0.9m), 9s period, ENE swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 8AM (local time) - 4.5ft (1.3m), 9s period, ENE swell with 237 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 5PM (local time) - 3ft (0.9m), 9s period with ENE swell.
Best Forecast Surf Conditions for The Reef (Culebra) this week:
The surf forecast for The Reef (Culebra) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 5PM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.1m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Reef (Culebra) in the next 16 days are 1.3m 9s and forecast to arrive on Monday (Aug 31) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Monday (Aug 31) at 11AM.
| Wave Type | Time (AST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Mon 31st Aug) | 3ft (0.9m) 9s |
| Best Surf | 5PM (Mon 31st Aug) | 3ft (0.9m) 9s |
| Most Powerful | 8AM (Mon 31st Aug) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for The Reef (Culebra) over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's be straight with you. The next couple of weeks are looking pretty grim for a proper surf. We've got one spot on the radar, The Reef (Culebra), but it's a long, flat, and frustrating road ahead for most of the forecast. I'm not gonna sugarcoat it.
Looking at the whole 16-day window, the pattern is mostly small, weak, and unappealing. We’re looking at a lot of days with waves barely pushing 1.6ft, with short, weak periods and a lot of cross-shore wind. It’s the kind of stuff that’ll have you staring at the ocean from the car park, wondering if it’s even worth the walk. The energy in the water is consistently weak, with values often dipping below 100, which tells you everything you need to know.
The most honest thing I can say is that the first real window of anything is on Monday the 31st of August. The surface is still messy with a fresh southeast breeze, but we're looking at 3.6ft of short-period easterly swell. It's not going to be pretty, and the water temp at 85.3°F is about average for this time of year, so no surprises there. The afternoon cleans up with the wind dropping right out, but the swell also backs off a touch. It's surfable but very ordinary – a 1/10 if I'm being generous. This is a reef break and it’s very consistent, so it’ll be breaking, but with that wind and small, weak swell, it’s not going to be an enjoyable session for anyone but the most desperate. The wind is cross-off, so it’s not all bad, but it’s not good.
Then we hit a proper dead zone. From the 1st through to the 5th of September, it’s just terrible. We're talking ankle-biters at 0.7ft to 1.6ft, with periods of 4 to 10 seconds. The winds are mostly onshore or cross, and there’s a lot of storm risk and chop. The combined energy numbers are laughably low – mostly in the teens and thirties. You'd be better off finding a swimming pool. This is a blank run that lasts for days.
The weekend of the 5th and 6th sees a slight pulse, but it’s messy. Saturday afternoon has a jump to 3.6ft but with a 5-second period and strong east winds – that’s just a blown-out, windy mess. Sunday afternoon on the 6th is the closest thing we get to a highlight in week one. The wind swings offshore from the south-southeast, and the swell holds at 2.3ft from the east-northeast. It’s still small, but clean and glassy, and a period of 8 seconds is workable. Energy is still weak (76), but for a couple of hours it might offer a few clean, if gutless, little waves. Still, I wouldn’t be rushing out.
The second week, starting September 7th, is more of the same. Small swell, mostly poor conditions, and persistent onshore or cross-off breezes. There are peeks of cleaner conditions on the Monday and Tuesday mornings, but the swell hovers around 2.3ft at best, and the energy is moderate at best (107 one day). It’s all very lackluster. From the 9th onward, the swell direction swings to the north and northeast with a period that stretches to 12 seconds on the 9th. That's a longer period, which is a good sign, but the size is only 1.3ft and the wind remains a problem. We’re just not getting the energy to make it count.
As we head into the middle of September, from the 10th to the 15th, the surf stays small and weak. The period fluctuates but the size remains below 2.3ft. The wind is constantly messing things up, and the energy values stay low. It’s consistently poor, and the finder files give it a zero rating for almost every session.
So here’s the long and short of it: there are no standout days. You're looking at a lot of close-outs and grovels. The only reason to even get your feet wet is the offshore wind window on the afternoon of September 6th, but even that is marginal. For a reef break like The Reef (Culebra), you need a decent swell and clean conditions, and we’re getting neither. With the swell so small and the winds mostly cross, the setup looks more interesting for a kite surfer than a paddler. It tends not to stay this poor for long, but for now, keep your board in the car.
Short Range ForecastModerate rain (total 16mm), heaviest on Mon night. Warm (max 28°C on Mon night, min 25°C on Mon afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Thu night. Warm (max 29°C on Fri afternoon, min 28°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | ENE 9 | ENE 9 | E 9 | NE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | NNE 10 | E 7 | E 4 | NNE 9 | ENE 7 | ENE 7 | N 8 | E 5 | E 5 | ENE 8 | ENE 8 | E 9 |
Wave Graph | |||||||||||||||||||||
176 | 106 | 52 | 10 | 21 | 21 | 11 | 18 | 11 | 11 | 11 | 30 | 8 | 9 | 18 | 1 | 55 | 45 | 83 | 70 | 78 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross-off | off | off |
High Tide | 10:56AM0.36m | 10:31PM0.30m | 11:50AM0.37m | 11:00PM0.27m | 12:49PM0.38m | 11:31PM0.24m | 1:53PM0.38m | 00:09AM0.23m | 3:04PM0.39m | 1:01AM0.21m | 4:15PM0.40m | 2:18AM0.21m | 5:21PM0.41m | 3:50AM0.22m | |||||||
Low Tide | 5:07PM0.15m | 4:54AM0.05m | 6:09PM0.17m | 5:28AM0.02m | 7:22PM0.19m | 6:11AM0.00m | 8:51PM0.20m | 7:04AM-0.01m | 10:25PM0.20m | 8:08AM-0.01m | 11:40PM0.19m | 9:22AM0.00m | 00:31AM0.18m | ||||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 6:36 | — | — | 6:35 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | |
mm | 1 | 1 | 3 | 4 | 1 | 3 | 1 | — | 2 | — | — | 3 | 4 | — | — | — | 2 | 4 | 1 | — | 5 |
Temp °C | 27 | 26 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 |
Feels °C | 26 | 28 | 28 | 28 | 28 | 28 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 30 | 28 | 28 | 29 | 29 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | E 9 | NE 8 | SSE 6 | SSE 6 | E 8 | E 8 | SSE 5 | E 7 | SE 5 | NNE 10 | ENE 7 | ENE 7 | ENE 7 | N 8 | N 8 | SE 6 | ENE 8 | ENE 8 | E 9 |
176 | 106 | 52 | 10 | 21 | 14 | 11 | 18 | 11 | 4 | 6 | 10 | 5 | 9 | 18 | 1 | 1 | 15 | 83 | 70 | 78 | |
Swell 2 Height (m) Direction Period (s) | NNE 11 | NE 10 | NE 7 | NE 10 | E 8 | E 8 | NE 11 | NE 6 | E 8 | NNE 10 | E 7 | SE 8 | ESE 9 | ESE 8 | NE 9 | S 8 | S 8 | N 8 | SE 9 | ESE 9 | NE 10 |
11 | 4 | 16 | 4 | 21 | 21 | 5 | 9 | 10 | 11 | 9 | 3 | 7 | 7 | 3 | 1 | 1 | 1 | 20 | 8 | 27 | |
Swell 3 Height (m) Direction Period (s) | — | — | NNE 10 | N 12 | NE 8 | NE 9 | N 9 | NNE 11 | NNE 11 | NE 6 | NNE 10 | S 8 | NNE 9 | NNE 9 | S 8 | — | — | — | NNE 8 | NNE 8 | NNE 8 |
— | — | 10 | 3 | 9 | 3 | 2 | 12 | 11 | 2 | 10 | 1 | 8 | 8 | 1 | — | — | — | 6 | 6 | 12 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 5 | E 8 | ENE 5 | NE 5 | E 5 | SE 6 | ENE 3 | E 5 | ENE 4 | E 4 | E 5 | ESE 5 | ESE 5 | E 5 | E 5 | E 5 | SE 4 | SSE 5 | SE 6 |
101 | 106 | 30 | 140 | 15 | 11 | 29 | 19 | 4 | 22 | 11 | 30 | 36 | 33 | 35 | 48 | 55 | 45 | 17 | 46 | 88 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 74 | 0 | 39 | 105 | 105 | 68 | 105 | 193 | 68 | 585 | 1185 | 82 | 270 | 105 | 83 | 189 | 371 | 74 | 79 | 0 | 0 |
Best forecast wave conditions in Puerto Rico | |||||||||||||||||||||
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.











