Surf Forecasts:
Algarrobo surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 4ft (1.2m), 16s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 11AM (local time) - 6ft (1.8m), 15s period, WSW swell with 1,467 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 4ft (1.2m), 16s period with WSW swell.
Best Forecast Surf Conditions for Algarrobo this week:
The surf forecast for Algarrobo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 2AM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 1.3m and 13s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Algarrobo in the next 16 days are 1.8m 15s and forecast to arrive on Wednesday (Aug 19) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Friday (Aug 21) at 5AM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 19th Aug) | 4ft (1.2m) 16s |
| Best Surf | 2AM (Wed 19th Aug) | 4ft (1.2m) 16s |
| Most Powerful | 11AM (Wed 19th Aug) | 6ft (1.8m) 15s |
Table - best surf conditions forecast for Algarrobo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Algarrobo. This is a reef and pier setup, and it's a pretty consistent spot, so there’s plenty to talk about over the next couple of weeks.
We start off a bit grotty on Tuesday, the 18th of August. The morning has a 4.6ft SW swell, but that cross-on southerly wind at 9 mph has it chopped and messy. The afternoon doesn't get any better with 3.9ft swell and a stronger breeze. That's a session to sit out.
Now, hang on to your board, because Wednesday the 19th is where it really fires up. The morning brings a clean 5.9ft swell from the WSW with a 15-second period. That's proper groundswell, and with a light north wind blowing cross-offshore, the conditions are clean. The combined energy is pumping at 1649 (moderate to strong). This is a standout for experienced surfers. Then the afternoon goes glassy – a 3 mph westerly wind makes it dead calm, and the swell holds at 5.9ft with a 14-second period. That’s about as good as it gets. If you can get out there, Wednesday is the day.
Thursday the 20th and Friday the 21st are a write-off. The wind swings back to a cross-on shore, speeds are up around 12 mph, and the swell gets messy. You’ll be battling chop, not surfing waves. The weekend is no better; Saturday the 22nd and Sunday the 23rd are poor, with the swell dropping right down to 1.3ft and the energy fading to just 190 (weak). There’s a gap of about four days of pretty average surf here.
We get a little glimmer on Monday the 24th afternoon. The swell is only 3.6ft, but the wind turns cross-offshore from the NE at 6 mph, and the water is clean. It’s small, but it’s rideable. Tuesday the 25th is glassy again in the afternoon with a 2ft swell, but it's tiny. Still, a clean 2ft is better than a choppy 4.9ft.
The real action picks up again on Thursday the 27th of August. The afternoon is glassy, with a 2.6ft swell from the WSW, but the period is a massive 18 seconds. That's an incredibly long groundswell, and the combined energy is 887 (moderate). It’s small, but it will be clean and lined up. That’s a sneaky good session.
Friday the 28th sees a bump in swell to 5.2ft with a 15-second period, but the wind is cross-on, so it’s a bit lumpy. The energy is solid at 1243 (strong), but the wind holds it back from being a classic.
Now, look out. Saturday the 29th of August morning brings a big 9.8ft swell from the WSW. That is a serious push, with energy at 2614 (very strong). This is for experts only. The wind is cross-shore, so it will be a bit of a beast to handle. The afternoon stays big at 8.2ft, but the wind picks up and makes it messy.
Sunday the 30th is still big, with a 6.9-7.2ft swell, but it's a bit softer. The water temperature is about average for this time of year, nothing unusual to report.
The best bet in the second week is Monday the 31st of August. The morning is glassy with a 5.9ft WSW swell, 11-second period, and the energy is 856 (moderate). The conditions will be clean and the waves will be solid. That’s a very strong option for a good session.
After that, it fades out again. Tuesday the 1st of September is poor, and Wednesday the 2nd has a 5.9ft swell but the wind is bad. So, to wrap it up: Wednesday the 19th of August is your absolute standout, with Thursday the 27th and Monday the 31st of August being the other top options. Don't sleep on that glassy Thursday.
Short Range ForecastMostly dry. Very mild (max 15°C on Tue afternoon, min 11°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Fri afternoon, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 12 | SW 12 | WSW 15 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | SW 11 | WSW 10 | SW 11 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 12 |
Wave Graph | |||||||||||||||||||
747 | 551 | 584 | 751 | 1467 | 1332 | 1110 | 1100 | 699 | 469 | 408 | 743 | 237 | 467 | 147 | 147 | 115 | 85 | 350 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-off | cross-off | glassy | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy |
High Tide | 1:53AM1.17m | 2:00PM0.98m | 2:41AM1.13m | 2:49PM0.84m | 3:39AM1.08m | 3:59PM0.73m | 4:53AM1.06m | 5:49PM0.68m | 6:16AM1.08m | 7:25PM0.71m | 7:22AM1.14m | 8:17PM0.76m | |||||||
Low Tide | 8:09AM0.33m | 8:06PM0.29m | 9:14AM0.42m | 8:46PM0.38m | 10:42AM0.47m | 9:42PM0.46m | 12:23PM0.46m | 11:05PM0.50m | 1:39PM0.40m | 00:28AM0.48m | 2:28PM0.32m | 1:28AM0.42m | |||||||
— | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | |
6:19 | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 14 | 15 | 12 | 14 | 15 | 13 | 14 | 15 | 13 | 17 | 18 | 16 | 18 | 17 | 13 | 15 | 16 | 14 |
Feels °C | 10 | 11 | 12 | 9 | 12 | 13 | 13 | 11 | 11 | 10 | 13 | 14 | 14 | 15 | 14 | 12 | 13 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | WSW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | SW 18 | SW 8 | SW 16 | WSW 10 | SW 7 | W 9 | SW 7 | WSW 12 |
747 | 551 | 320 | 599 | 1467 | 1332 | 1110 | 1100 | 699 | 469 | 408 | 13 | 210 | 10 | 147 | 147 | 41 | 79 | 350 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | WSW 16 | WSW 15 | WSW 16 | SW 8 | SW 8 | SW 7 | — | W 21 | SW 7 | W 20 | SW 18 | WSW 10 | W 15 | SW 13 | WSW 10 | SW 11 | WSW 9 | SW 6 |
82 | 412 | 584 | 751 | 182 | 138 | 36 | — | 9 | 169 | 8 | 13 | 237 | 4 | 6 | 75 | 31 | 26 | 30 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 7 | — | — | — | — | — | SW 20 | — | — | — | W 15 | SW 16 | SSW 12 | W 12 | WSW 15 | SW 10 |
— | — | — | 115 | — | — | — | — | — | 15 | — | — | — | 4 | 10 | 53 | 12 | 85 | 28 | |
Wind waves Height (m) Direction Period (s) | — | — | SW 4 | — | — | — | — | — | SW 6 | SSE 3 | SW 7 | SW 11 | — | SW 11 | SW 7 | — | SW 7 | — | — |
— | — | 24 | — | — | — | — | — | 134 | 1 | 152 | 743 | — | 467 | 147 | — | 115 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 14 | 14 | 370 | 0 | 0 | 0 | 14 | 42 | 370 | 20 | 29 | 41 | 14 | 14 | 14 | 20 | 14 | 14 | 0 |
Best forecast wave conditions in Santiago | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
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Information about the Algarrobo Surf forecast
The above surf forecast table for Algarrobo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Algarrobo can be found by selecting the local surf guide option on the grey menu. Our Algarrobo 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 (Algarrobo) 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 Algarrobo 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.
Algarrobo is 21 km (13 miles) from the city of Valparaiso. If you plan a holiday in Santiago, look for hotels and other accommodation in Valparaiso. Valparaiso has rooms for a wide range of budgets as well as car hire and transport links.











