Surf Forecasts:
The Rock-Costa Azul surf forecast from 16 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11PM (local time) - 3.5ft (1.1m), 16s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 8AM (local time) - 3.5ft (1.1m), 19s period, SW swell with 819 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 11PM (local time) - 3.5ft (1.1m), 16s period with SSW swell.
Best Forecast Surf Conditions for The Rock-Costa Azul this week:
The surf forecast for The Rock-Costa Azul over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 11PM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 0.6m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The Rock-Costa Azul in the next 16 days are 1.1m 19s and forecast to arrive on Sunday (Sep 20) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Tuesday (Sep 22) at 2PM.
| Wave Type | Time (MST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 15th Sep) | 3.5ft (1.1m) 16s |
| Best Surf | 11PM (Tue 15th Sep) | 3.5ft (1.1m) 16s |
| Most Powerful | 8AM (Sun 20th Sep) | 3.5ft (1.1m) 19s |
Table - best surf conditions forecast for The Rock-Costa Azul over the next 16 days.
The Lowdown
Okay, let’s break this down for the crew who are keen on The Rock–Costa Azul. It’s a proper reef break, and for the next week and a half, there’s a solid run of clean, rideable surf on the way before things get seriously heavy.
Starting from Tuesday the 15th, we’ve got a modest 0.8m SSW swell at 16 seconds, and the water is a warm 31°, which is way above normal for this time of year. The afternoon is looking clean with a light cross-offshore breeze. It’s not big, but it’s clean and fun.
Wednesday the 16th bumps the swell up to 1.1m, same direction, and the afternoon is again clean. The mornings are a bit questionable tide-wise, but the arvos are where it’s at. Thursday the 17th holds at 1.0m, and Friday the 18th, the period stretches out to 19 seconds, giving the waves a lot more push, even though the height drops a touch to 0.7m.
The weekend keeps things around the 0.9 to 1.0m mark. There’s a slight risk of a thunderstorm on the 20th, but the wind stays favorable. Then we hit the real sweet spot from the 21st through the 24th. The swell is a consistent 1.0 to 1.1m from the SW, the winds are light and often glassy, and this is when The Rock will be at its best. Great lines, good consistency, clean faces.
The 25th and 26th see the swell ease to around 0.9 to 1.1m with a shorter period of 12 to 13 seconds. It’s still rideable, but the punch isn’t quite there. You’ll still get some clean ones on the glassy mornings.
Now, here’s the warning. From the 28th onward, things ramp up big time. The swell jumps to 1.7m, then 2.4m on the 28th, and by the 29th we’re looking at a solid 3.5m from the S. The 30th is even bigger – 4.5m in the morning, pushing 5.0m in the afternoon, with huge amounts of energy in the water. That’s far too big for this break. It’ll be a washing machine over the reef, and unless you’re a top-tier expert, it’s a no-go. Honestly, that kind of size and power is more suited to the kite surfers than anyone on a paddle board.
So, to be clear: the first couple of weeks are your window. The 21st to the 24th is the pick of the bunch for the advanced surfer. The last two days of September are for the brave and the crazy.
This is Rusty, signing off. Stay sharp out there.
Short Range ForecastMostly dry. Warm (max 33°C on Fri morning, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Fri night. Warm (max 32°C on Fri afternoon, min 28°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 20 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 19 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 322 | 627 | 575 | 544 | 515 | 394 | 367 | 388 | 450 | 380 | 465 | 455 | 455 | 621 | 678 | 553 | 745 | 754 | 694 | 644 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | on | cross-off | off | cross | cross-off | off | cross-on | cross-off | off | cross | cross-off | off | cross-off | cross-off | off | cross-off | off | cross-off |
High Tide | 10:46PM1.08m | 10:13AM1.52m | 11:15PM0.92m | 10:24AM1.44m | 10:28AM1.34m | 9:55AM1.24m | 8:18AM1.19m | 4:33PM1.23m | 7:28AM1.22m | 5:32PM1.35m | ||||||||||
Low Tide | 4:48PM0.46m | 3:37AM0.74m | 5:25PM0.56m | 3:20AM0.79m | 6:26PM0.68m | 11:35PM0.65m | 00:01AM0.53m | 12:17PM1.10m | 00:21AM0.43m | 12:16PM0.97m | 00:40AM0.35m | |||||||||
 |  | | | | | | | | |  | |  |  | | | | | | | |
 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 3 | — | 1 | 1 | — | — | — |
Temp °C | 31 | 28 | 31 | 31 | 29 | 32 | 32 | 29 | 33 | 32 | 29 | 32 | 32 | 28 | 32 | 32 | 28 | 31 | 31 | 28 |
Feels °C | 34 | 32 | 34 | 35 | 33 | 35 | 35 | 33 | 36 | 35 | 32 | 35 | 34 | 32 | 35 | 33 | 31 | 34 | 35 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 18 | SW 19 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 |
| kJ | 322 | 627 | 575 | 544 | 515 | 394 | 367 | 273 | 246 | 192 | 465 | 455 | 455 | 621 | 678 | 553 | 745 | 754 | 694 | 644 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSW 21 | SSE 8 | SW 20 | SW 19 | SW 19 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | S 11 | S 11 | S 10 |
| kJ | 246 | 61 | 43 | 43 | 44 | 305 | 47 | 388 | 450 | 380 | 178 | 169 | 131 | 117 | 111 | 109 | 73 | 62 | 88 | 115 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | SW 6 | SSW 12 | SW 23 | SW 21 | SSE 9 | SSW 21 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 |
| kJ | 62 | 9 | 55 | 140 | 224 | 44 | 297 | 68 | 54 | 52 | 61 | 41 | 40 | 37 | 27 | 27 | 28 | 28 | 18 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WNW 3 | — | WNW 5 | WNW 4 | — | — | WNW 7 | — | W 8 | WNW 7 | W 7 | W 4 | WNW 3 | WNW 4 | WNW 4 | WNW 4 |
| kJ | — | — | — | — | 7 | — | 8 | 11 | — | — | 28 | — | 41 | 31 | 24 | 13 | 9 | 8 | 18 | 19 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 13 | 0 | 0 | 8 | 0 | 0 | 3 | 0 | 0 | 426 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Baja Sur | ||||||||||||||||||||
Best forecast wave conditions in Mexico | ||||||||||||||||||||
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Information about the The Rock-Costa Azul Surf forecast
The above surf forecast table for The Rock-Costa Azul provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Rock-Costa Azul can be found by selecting the local surf guide option on the grey menu. Our The Rock-Costa Azul 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 Rock-Costa Azul) 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 Rock-Costa Azul 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.
The Rock-Costa Azul is 13 km (8 miles) from Cabo San Lucas. If you plan a holiday in Baja Sur, look for hotels and other accommodation in Cabo San Lucas. Cabo San Lucas has rooms for a wide range of budgets as well as car hire and transport links.
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