Surf Forecasts:
Tongo Reef surf forecast from 21 Aug 2026:
- Best quality surf: Thursday 27 Aug, 9PM (local time) - 4ft (1.2m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 12PM (local time) - 6ft (1.8m), 16s period, SW swell with 1,685 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 9PM (local time) - 4.5ft (1.3m), 9s period with SSE swell.
Best Forecast Surf Conditions for Tongo Reef this week:
The surf forecast for Tongo Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 9PM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.8m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tongo Reef in the next 16 days are 1.8m 16s and forecast to arrive on Friday (Aug 28) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Tuesday (Aug 25) at 3PM.
| Wave Type | Time (-06) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 21st Aug) | 4.5ft (1.3m) 9s |
| Best Surf | 9PM (Thu 27th Aug) | 4ft (1.2m) 18s |
| Most Powerful | 12PM (Fri 28th Aug) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Tongo Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's break down what's on the menu for the next couple of weeks.
First up, the water is sitting at 78°F, which is a whopping 8°F warmer than usual for this time of year. That's very unusual, so you can leave the thick wetsuit at home. We're looking at Tongo Reef, a fairly consistent reef break that's exposed to the south. It's an advanced spot, so keep that in mind.
To be honest, the start of this run is a bit flat and messy. Friday the 21st through to Thursday the 27th is a real struggle. We're seeing small, weak swell in the 2ft to 5ft range, mostly from the SSE, with a short period that just doesn't have any punch. The combined energy is weak to moderate, topping out around 692 (moderate) on the Saturday afternoon, but it's just not doing anything special. The wind is a steady cross-off from the SSE, which keeps things clean, but the waves are too weak to get excited about. The guidance says "marginal," and that's being kind.
Now, hold onto your boards, because things start to change on Friday the 28th. The swell really kicks in. Friday afternoon looks like the standout. We've got a solid 6ft of swell from the SW, with a 16-second period – that's proper groundswell energy. The combined energy is a massive 1715 (strong), and with a gentle cross-off breeze from the south, it's going to be clean. For a reef break like this, that long-period SW groundswell is going to reel off nicely. This is the one for experienced surfers, no doubt about it. Saturday the 29th still has some good size, with 6ft from the SW, but the energy drops a touch to 1229, and the wind picks up a bit, so it's still a good option but not quite as clean as Friday.
After that little spike, the surf settles back into a more mellow pattern for the start of September. We've got some consistent 5ft to 5ft SW swell from the 3rd through the 5th, with periods around 15-17 seconds. The energy is in the moderate to strong range, around 1000-1300, and the wind looks clean. It's not the barnstormer of the 28th, but it's consistent, clean, and will be a fun run for those who know the reef. It's worth a paddle.
So, to sum it up: the first week is a write-off, but the real action is on Friday the 28th of August. That afternoon session is the pick of the entire forecast. The following weekend into early September has consistent, clean swell that's worth your time.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri night, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Mon morning, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 14 | SW 19 | SW 18 | SW 18 | SW 16 | SW 19 | SW 19 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 383 | 294 | 254 | 274 | 274 | 330 | 319 | 346 | 390 | 261 | 251 | 178 | 142 | 102 | 90 | 155 | 154 | 214 | 446 | 361 | 1099 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 9:46PM1.46m | 9:58AM1.52m | 11:05PM1.48m | 11:12AM1.53m | 00:11AM1.55m | 12:14PM1.59m | 1:01AM1.66m | 1:04PM1.68m | 1:41AM1.77m | 1:46PM1.78m | 2:16AM1.88m | 2:23PM1.87m | 2:49AM1.98m | ||||||||
Low Tide | 3:20PM0.68m | 3:45AM0.86m | 4:39PM0.70m | 5:13AM0.86m | 5:52PM0.65m | 6:23AM0.79m | 6:46PM0.56m | 7:13AM0.68m | 7:29PM0.46m | 7:53AM0.56m | 8:05PM0.36m | 8:28AM0.45m | 8:38PM0.28m | ||||||||
 | |  |  |  |  | | | | | | | | | | | | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 6:04 | — | — | 6:04 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
Feels °C | 25 | 24 | 27 | 25 | 26 | 25 | 25 | 25 | 26 | 25 | 24 | 25 | 24 | 23 | 24 | 23 | 24 | 24 | 24 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 14 | SSE 8 | SW 15 | SW 18 | SSE 6 | SSE 6 | SW 16 | SW 18 |
| kJ | 383 | 294 | 254 | 274 | 274 | 218 | 213 | 172 | 134 | 261 | 251 | 178 | 142 | 102 | 24 | 107 | 154 | 60 | 51 | 295 | 1099 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 11 | SSW 11 | SSW 10 | SW 10 | SW 10 | SW 14 | SW 18 | SW 14 | SW 16 | SW 19 | SSE 6 | SSE 6 |
| kJ | 272 | 203 | 236 | 151 | 149 | 330 | 319 | 346 | 390 | 47 | 46 | 42 | 25 | 25 | 51 | 155 | 73 | 214 | 446 | 41 | 31 |
Swell 3 Height (m) Direction Period (s) | N 8 | SW 20 | SW 20 | SSW 19 | SW 18 | SSW 12 | SSW 12 | SW 12 | SW 11 | N 6 | N 8 | N 7 | N 9 | N 8 | SW 19 | SSW 9 | SSW 9 | SW 14 | SW 14 | SW 19 | WSW 13 |
| kJ | 6 | 100 | 98 | 248 | 269 | 98 | 94 | 69 | 60 | 1 | 1 | 1 | 6 | 5 | 90 | 17 | 16 | 93 | 121 | 361 | 113 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SSE 8 | SSE 8 | SSE 8 | S 5 | S 5 | S 6 | S 6 | S 6 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 96 | 92 | 102 | 45 | 75 | 75 | 80 | 69 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 1309 | 0 | 984 | 1309 | 977 | 977 | 0 | 0 | 977 | 1297 | 995 | 977 | 1253 | 980 | 977 | 94 | 0 | 94 | 1271 | 94 |
Best forecast wave conditions in Galapagos - San Cristobal | |||||||||||||||||||||
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Information about the Tongo Reef Surf forecast
The above surf forecast table for Tongo Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tongo Reef can be found by selecting the local surf guide option on the grey menu. Our Tongo Reef 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 (Tongo Reef) 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 Tongo Reef 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 Galapagos - San Cristobal? If you are looking for accommodation near Tongo Reef, camping, hotels and holiday cottages in Galapagos - San Cristobal, consider staying in Galapagos Islands which is 3 km (2 miles) away. Other places in and around Galapagos - San Cristobal where you can find information about places to rent, and car hire include San Cristobal which is 53 km (33 miles) away and Bahia de la Academia, 79 km (49 miles) away.
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