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Surf Forecasts:
Isla Negra surfForecast / Santiago / Chile
16 Day Weather and Surf, issued 1 pm Monday 13 Apr 2026 -04Forecast update in hr min s Forecast update imminent
Isla Negra surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Isla Negra sea temperature is
15.1° C
(Which is slightly cooler than normal)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 Friday (Apr 17) at 5PM. The primary swell is predicted to be 0.3m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Isla Negra in the next 16 days are 0.4m 14s and forecast to arrive on Sunday (Apr 19) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 13s period and expected on Sunday (Apr 19) at 11AM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 17th Apr) | 1ft (0.3m) 16s |
| Best Surf | 5PM (Fri 17th Apr) | 1ft (0.3m) 16s |
| Most Powerful | 5AM (Sun 19th Apr) | 1.5ft (0.4m) 14s |
Table - best surf conditions forecast for Isla Negra over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Very mild (max 19°C on Wed morning, min 12°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Fri morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||
Mon 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 12 | 12 | 12 | 12 | 19 | 13 | 18 | 18 | 18 | 15 | 16 | 16 | 16 | 16 | 14 | 15 | 15 | 15 | 13 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 27 | 7 | 6 | 14 | 23 | 22 | 7 | 7 | 30 | 30 | 12 | 22 | 50 | 50 | 10 | 10 | 41 | 54 | 54 | 8 | 17 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- on | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- off | glass | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- off | ||
High Tide / height (m) | |||||||||||||||||||||||
Low Tide / height (m) | |||||||||||||||||||||||
Mon 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||
| Sunrise | - | - | 7:07 | - | - | 7:09 | - | - | 7:09 | - | - | 7:09 | - | - | 7:11 | - | - | 7:11 | - | - | 7:11 | ||
| Sunset | 6:25 | - | - | 6:24 | - | - | 6:22 | - | - | 6:22 | - | - | 6:21 | - | - | 6:20 | - | - | 6:19 | - | - | ||
 |  |  |  | | | | | | |  | | | | | |  | | | | | |||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 17 | 14 | 15 | 15 | 14 | 19 | 18 | 15 | 17 | 19 | 17 | 21 | 19 | 17 | 17 | 17 | 15 | 13 | 13 | 13 | 14 | ||
| Feels °C (?) | 15 | 13 | 14 | 14 | 12 | 16 | 14 | 14 | 16 | 18 | 17 | 21 | 17 | 17 | 16 | 15 | 13 | 9 | 8 | 11 | 11 | ||
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FREE! Surf-Forecast.com widget for your website
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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