Surf Forecasts:
Isla Negra surf forecast from 26 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8AM (local time) - 10ft (3.0m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 10ft (3.0m), 14s period, WSW swell with 4,061 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 5PM (local time) - 6ft (1.8m), 12s period with WSW swell.
Best Forecast Surf Conditions for Isla Negra this week:
The surf forecast for Isla Negra over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 5PM. The primary swell is predicted to be 1.8m and 12s period with a secondary swell of 0.1m and 20s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Isla Negra in the next 16 days are 3.0m 14s and forecast to arrive on Thursday (Aug 27) 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 0.9m 7s period and expected on Tuesday (Sep 01) at 5PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 26th Aug) | 6ft (1.8m) 12s |
| Best Surf | 8AM (Thu 27th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 11AM (Thu 27th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Isla Negra over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Very mild (max 14°C on Wed morning, min 11°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Sun night. Very mild (max 16°C on Sat afternoon, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | WSW 13 | WSW 12 | WSW 12 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 236 | 755 | 828 | 2117 | 4061 | 3594 | 2436 | 1751 | 1766 | 1256 | 887 | 743 | 550 | 439 | 494 | 540 | 394 | 387 | 90 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | off | off | cross-off | cross-on | glassy | glassy | glassy | cross-off | off | cross-off | cross-off | on | on | cross-off | cross-off | cross-off | off |
High Tide | 9:24PM0.88m | 9:24AM1.35m | 9:53PM0.95m | 9:56AM1.39m | 10:22PM1.01m | 10:27AM1.40m | 10:52PM1.08m | 10:58AM1.38m | 11:22PM1.14m | 11:30AM1.32m | 11:55PM1.19m | 12:03PM1.23m | 00:30AM1.22m | ||||||
Low Tide | 2:53AM0.27m | 4:03PM0.13m | 3:28AM0.21m | 4:30PM0.09m | 4:03AM0.16m | 4:55PM0.07m | 4:39AM0.14m | 5:21PM0.07m | 5:16AM0.14m | 5:47PM0.09m | 5:55AM0.16m | 6:15PM0.12m | |||||||
 |  | |  |  | | | | |  |  | | | |  |  | | | | |
 | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — |
 | 6:23 | — | 6:24 | — | — | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — |
mm | — | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — |
Temp °C | 13 | 14 | 13 | 13 | 12 | 13 | 12 | 13 | 14 | 12 | 14 | 16 | 13 | 14 | 15 | 14 | 14 | 14 | 14 |
Feels °C | 11 | 12 | 11 | 11 | 11 | 10 | 11 | 11 | 12 | 10 | 11 | 13 | 11 | 11 | 11 | 11 | 11 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | W 10 | WSW 12 | WSW 12 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | SW 12 | WSW 6 |
| kJ | 148 | 755 | 828 | 2117 | 4061 | 3594 | 2436 | 1751 | 1766 | 1256 | 887 | 743 | 550 | 439 | 494 | 540 | 394 | 66 | 80 |
Swell 2 Height (m) Direction Period (s) | WSW 13 | W 20 | W 20 | — | — | — | — | NW 15 | — | — | — | — | NW 13 | WSW 15 | SW 18 | SW 16 | SW 16 | SW 15 | WSW 11 |
| kJ | 236 | 8 | 8 | — | — | — | — | 8 | — | — | — | — | 7 | 42 | 13 | 41 | 61 | 55 | 90 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 20 | NW 13 | — | SW 20 | SW 12 | WSW 18 | SW 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 7 | — | 15 | 23 | 32 | 96 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 11 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 387 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 58 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 58 | 82 | 0 | 48 | 425 | 0 |
Best forecast wave conditions in Santiago | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Isla Negra surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Isla Negra Surf forecast
The above surf forecast table for Isla Negra provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Isla Negra can be found by selecting the local surf guide option on the grey menu. Our Isla Negra 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 (Isla Negra) 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 Isla Negra 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.
Isla Negra is 19 km (12 miles) from the city of San Antonio. If you plan a holiday in Santiago, look for hotels and other accommodation in San Antonio. San Antonio has rooms for a wide range of budgets as well as car hire and transport links.
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