Surf Forecasts:
Renaca surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 8PM (local time) - 3.5ft (1.0m), 18s period, WSW swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 5PM (local time) - 7ft (2.1m), 12s period, SW swell with 1,269 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 8PM (local time) - 3.5ft (1.0m), 18s period with WSW swell.
Best Forecast Surf Conditions for Renaca this week:
The surf forecast for Renaca over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 8PM. The primary swell is predicted to be 1.0m and 18s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.9m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Renaca in the next 16 days are 2.1m 12s and forecast to arrive on Monday (Aug 10) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 10s period and expected on Monday (Aug 17) at 2PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 12th Aug) | 3.5ft (1.0m) 18s |
| Best Surf | 8PM (Wed 12th Aug) | 3.5ft (1.0m) 18s |
| Most Powerful | 5PM (Mon 10th Aug) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Renaca over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about Renaca in feet and Fahrenheit.
First few days are a bust. Monday and Tuesday are rough – that 7ft SW swell Monday morning is all cross-on wind and chop. Tuesday drops off but stays messy. Don’t bother.
Thursday, 13 August, is when it turns. Wind goes cross-off from the NNW, cleaning up a 4ft WSW swell with a 16-second period. That’s a good groundswell. Water temp is 58°, right on average. Thursday afternoon holds at 4ft and clean. That’s your first real window.
Saturday 15 August afternoon is a beauty. Glassy conditions – dead calm – with 3ft of SW swell at 16 seconds. The energy reading is 686, not huge, but with no wind, those waves will be silky and perfect. Best of the first week.
Sunday 16 August is solid too. Morning: 6ft WSW at 10 seconds, clean. Afternoon goes glassy again with 5ft SW at 9 seconds. Good, punchy surf for the experienced crew.
Now, the big one – Wednesday, 19 August. Afternoon delivers 8ft from the WSW, 14-second period, and a massive energy reading of 2460. Wind is a light cross-off from the NNW. This is expert-level, powerful, clean surf. Best of the whole 16-day forecast, but it’s a week and a half away, so keep watching. Thursday 20 August morning holds 7ft but gets blown out by afternoon.
The final few days, around Monday 24 and Tuesday 25 August, fade to smaller, cleaner waves – 4ft and then 2ft with glassy conditions on Tuesday morning. A nice, mellow end.
Renaca is an exposed SW break, and with those long-period swells (over 15 seconds), it’ll produce proper, lined-up waves. It’s advanced territory when it’s over 7ft, so leave the soft top at home on the 19th. Crowds can show up, but the quality days usually keep the numbers down.
Bottom line: Thursday 13 for the first good session, Saturday 15 afternoon for glassy perfection, and Wednesday 19 August for the serious stuff.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Wed morning, min 8°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Very mild (max 15°C on Thu morning, min 13°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 19 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | SW 13 | SW 13 | WSW 13 | SW 16 | WSW 14 | WSW 10 | SW 9 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1569 | 1269 | 899 | 515 | 288 | 140 | 177 | 399 | 594 | 768 | 576 | 431 | 232 | 180 | 178 | 144 | 367 | 419 | 508 | 440 | 424 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross | cross-off | cross-off | off | cross | cross-off | cross-off | cross-off | glassy | cross | cross-off | glassy | cross |
High Tide | 8:11AM1.44m | 8:55PM0.88m | 9:04AM1.54m | 9:43PM0.96m | 9:51AM1.60m | 10:26PM1.04m | 10:36AM1.60m | 11:08PM1.11m | 11:18AM1.55m | 11:49PM1.16m | 11:58AM1.45m | 00:29AM1.19m | 12:37PM1.30m | 1:10AM1.19m | |||||||
Low Tide | 3:07PM0.10m | 2:23AM0.19m | 3:52PM0.01m | 3:15AM0.11m | 4:33PM-0.05m | 4:04AM0.06m | 5:12PM-0.06m | 4:52AM0.04m | 5:48PM-0.04m | 5:38AM0.07m | 6:23PM0.01m | 6:25AM0.14m | 6:57PM0.09m | ||||||||
 | |  | | |  |  | |  | |  |  | | | | | | |  | | | |
 | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:17 | — | — | 6:17 | — |
mm | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 2 | 4 | 7 | 2 | — |
Temp °C | 10 | 12 | 9 | 10 | 12 | 9 | 13 | 13 | 13 | 15 | 13 | 13 | 14 | 14 | 13 | 15 | 15 | 14 | 13 | 13 | 13 |
Feels °C | 7 | 7 | 5 | 6 | 8 | 5 | 11 | 11 | 11 | 14 | 10 | 13 | 13 | 13 | 13 | 15 | 14 | 13 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | SW 13 | WNW 8 | W 11 | W 10 | W 10 | SW 13 | SW 13 | SW 13 |
| kJ | 1569 | 1269 | 899 | 515 | 288 | 140 | 69 | 399 | 594 | 768 | 576 | 431 | 232 | 180 | 144 | 144 | 314 | 354 | 352 | 230 | 162 |
Swell 2 Height (m) Direction Period (s) | — | W 8 | W 8 | WSW 15 | WSW 16 | WSW 14 | SW 19 | SW 10 | SW 5 | SW 8 | SW 8 | SW 9 | SW 8 | W 9 | SW 13 | WNW 7 | SW 16 | WSW 14 | SW 10 | W 8 | WSW 16 |
| kJ | — | 1 | 1 | 74 | 47 | 118 | 177 | 46 | 27 | 45 | 32 | 20 | 10 | 64 | 178 | 57 | 367 | 419 | 76 | 57 | 86 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 8 | W 7 | WSW 20 | WSW 14 | WSW 13 | SW 9 | — | NW 13 | NW 13 | NW 12 | SW 8 | W 10 | WSW 13 | NW 11 | W 13 | NW 11 | W 10 | NW 10 |
| kJ | — | — | — | 1 | 1 | 40 | 71 | 34 | 30 | — | 7 | 7 | 6 | 2 | 8 | 140 | 5 | 13 | 4 | 72 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 4 | SW 4 | SSW 5 | SW 5 | SW 5 | — | — | — | — | — | W 5 | — | — | — | — | WSW 10 | SW 9 | SW 8 |
| kJ | — | — | — | 5 | 15 | 37 | 49 | 45 | — | — | — | — | — | 2 | — | — | — | — | 508 | 440 | 424 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 167 | 3 | 3 | 5 | 3 | 3 | 3 | 3 | 0 | 0 | 0 | 68 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 3 |
Best forecast wave conditions in Santiago | |||||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||||
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Information about the Renaca Surf forecast
The above surf forecast table for Renaca provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Renaca can be found by selecting the local surf guide option on the grey menu. Our Renaca 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 (Renaca) 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 Renaca 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.
Renaca is 11 km (7 miles) from the city of Vina del Mar. If you plan a holiday in Santiago, look for hotels and other accommodation in Vina del Mar. Vina del Mar has rooms for a wide range of budgets as well as car hire and transport links.
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