
Surf Forecasts:
Renaca surf forecast from 10 Aug 2026:
- Best quality surf: Saturday 15 Aug, 5AM (local time) - 6ft (1.9m), 12s period, W swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 2AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,521 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 5PM (local time) - 2.5ft (0.8m), 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 5PM. The primary swell is predicted to be 0.8m and 18s period with a secondary swell of 0.5m and 10s. Another secondary swell of 0.9m and 6s 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 2.5m 14s and forecast to arrive on Monday (Aug 10) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Saturday (Aug 15) at 8PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 12th Aug) | 2.5ft (0.8m) 18s |
| Best Surf | 5AM (Sat 15th Aug) | 6ft (1.9m) 12s |
| Most Powerful | 2AM (Mon 10th Aug) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Renaca over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s in store for Renaca over the next couple of weeks.
It’s been a bit of a slow spell to start, with mostly cross-onshore wind and messy conditions, but there’s some real shine coming through. The overall pattern looks like we’ll have to be patient through the first half of the week, but then it starts to clean up, with a few proper standout windows that are worth circling on the calendar.
Monday 10th August kicks things off with a bit of swell at 7 ft from the SW, but the wind is a cross-onshore mess, so it’s not really one to get excited about. The wave energy is pumping at 1569, but the quality just isn't there.
Tuesday 11th sees the swell dropping off fast, down to 5 ft in the morning and then 4 ft in the arvo, and the wind stays on it. Not your day.
Now, here’s where it picks up. Wednesday 12th afternoon comes in glassy, with a clean 3 ft from the WSW. The period is a ripper at 18 seconds – that’s proper groundswell – and energy sits at 533. That’s the first real clean one, but it’s small.
Thursday 13th is the real gem of the early run. The morning is glassy again, with a gorgeous 4 ft WSW swell at 16 seconds and energy of 813. The water temp is about average for the time of year, so nothing wild to report. The afternoon stays clean with light offshore wind, 4 ft and a 15-second period. This is a top window – clean, good shape, and that long period means longer waits between sets but easier paddling out.
Friday 14th is clean in the morning, though smaller at 3 ft, and the arvo gets a bit crossed up.
Then Saturday 15th comes back strong. The morning has 6 ft from the W, 12 seconds, clean wind, energy at 920. The afternoon is even better: 6 ft from the WNW, 11 seconds, clean, with energy jumping to 1072. That’s excellent surf for experienced surfers, clean and punchy.
Sunday 16th is a write-off with onshore wind building to 16 mph in the arvo – messy and choppy.
Monday 17th the morning is absolute gold. Glassy conditions, 7 ft from the SW with a 9-second period, energy at 882. That’s clean, punchy, and overhead for many. The afternoon gets a bit wind-affected though.
Tuesday 18th – a real standout. The morning has a fresh 19 mph offshore wind, 7 ft SW at 15 seconds – that’s a very long period groundswell – and energy is a massive 2055. It’s clean. The afternoon is even better: 7 ft SW at 14 seconds, clean, energy at 1737, and the comment says it’s excellent for experts. This is a top day if you’re an experienced surfer.
Wednesday 19th morning is glassy, 6 ft SW at 13 seconds, energy of 1831 – another cracker for the experts. The arvo gets a bit gusty onshore though.
Thursday 20th and Friday 21st are mixed, with some clean windows but nothing that screams standout compared to the earlier days. Saturday 22nd and Sunday 23rd bring a huge pulse: 10 ft from the WSW. This is big – way too big for beginners, and only for serious experts. The energy readings are massive (2723, 2976, 2568). The wind is favorable, but the swell size is the story here. The Sunday afternoon drops to a still-chunky 8 ft, clean, and that's definitely an expert-only session.
The final days, Monday 24th and Tuesday 25th, ease off into smaller, cleaner conditions, with Tuesday morning looking like a nice glassy 3 ft SW – a calm finish.
So, if I’m picking my best on offer: Thursday 13th for the glassy, long-period groundswell that’s clean and manageable, and Tuesday 18th for the sheer power, long period, and offshore wind – that’s the one for the experienced crew. The 10 ft days on the 22nd and 23rd are only for the brave.
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Wed morning, min 8°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Very mild (max 15°C on Thu morning, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 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) | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | WSW 19 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | W 13 | W 12 | WNW 11 | SW 14 |
Wave Graph | |||||||||||||||||||
2521 | 1569 | 1269 | 899 | 515 | 288 | 140 | 142 | 399 | 594 | 768 | 576 | 431 | 232 | 225 | 704 | 840 | 631 | 401 | |
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 | cross-on | cross-on | glassy | cross | glassy | cross-off | off | cross-off | cross | glassy | cross-off | cross-off | 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 | |||||||
Low Tide | 1:23AM0.27m | 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 | |||||||
— | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | |
6:14 | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:17 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 | — | — | — | 2 | 3 | 1 |
Temp °C | 9 | 10 | 12 | 9 | 10 | 12 | 10 | 13 | 13 | 13 | 15 | 14 | 13 | 14 | 15 | 14 | 13 | 14 | 13 |
Feels °C | 5 | 7 | 8 | 5 | 6 | 8 | 7 | 12 | 10 | 11 | 14 | 11 | 10 | 14 | 14 | 14 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | 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 | W 9 | W 13 | W 12 | WNW 11 | W 10 |
2521 | 1569 | 1269 | 899 | 515 | 288 | 140 | 69 | 399 | 594 | 768 | 576 | 431 | 232 | 185 | 704 | 840 | 631 | 230 | |
Swell 2 Height (m) Direction Period (s) | W 9 | — | W 8 | W 8 | WSW 15 | WSW 16 | WSW 14 | WSW 19 | SW 10 | SW 5 | SW 8 | WSW 8 | SW 9 | W 10 | WSW 13 | WSW 13 | SW 17 | WSW 16 | SW 14 |
2 | — | 1 | 1 | 74 | 94 | 118 | 142 | 46 | 22 | 45 | 38 | 20 | 32 | 225 | 219 | 75 | 436 | 401 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 8 | W 7 | WSW 20 | WSW 14 | WSW 13 | SW 9 | — | NW 13 | NW 13 | WSW 8 | SW 8 | — | NW 11 | NW 11 | N 5 |
— | — | — | — | 1 | 1 | 40 | 71 | 34 | 41 | — | 7 | 7 | 6 | 2 | — | 5 | 5 | 13 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 4 | SSW 5 | SW 6 | SW 6 | — | — | W 8 | — | — | — | — | NNE 3 | — | — |
— | — | — | — | — | 15 | 48 | 61 | 54 | — | — | 32 | — | — | — | — | 2 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 5 | 3 | 3 | 3 | 167 | 3 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 15 | 0 | 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.











