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Surf Forecasts:
Isla Negra surfForecast / Santiago / Chile
12 Day Weather and Surf, issued 8 am Sunday 16 Nov 2025 -04
Best Forecast Surf Conditions for Isla Negra this week:
The surf forecast for Isla Negra over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Nov 17) at 12AM. The primary swell is predicted to be 0.5m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Isla Negra in the next 12 days are 1.3m 11s and forecast to arrive on Wednesday (Nov 19) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 11s period and expected on Monday (Nov 17) at 6PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 17th Nov) | 1.5ft (0.5m) 14s |
| Best Surf | 12AM (Fri 21st Nov) | 2.5ft (0.7m) 12s |
| Most Powerful | 6PM (Wed 19th Nov) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Isla Negra over the next 12 days.
Short Range Forecast Mostly dry. Very mild (max 18°C on Tue morning, min 12°C on Sun night). Winds increasing (light winds from the S on Sun morning, fresh winds from the SSW by Mon afternoon). | Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Fri afternoon, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 13 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 12 | 18 | 17 | 16 | 16 | 16 | 16 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 0 | 176 | 102 | 99 | 125 | 93 | 44 | 61 | 60 | 42 | 72 | 53 | 74 | 71 | 147 | 121 | 76 | 67 | 171 | 171 | 124 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | on | on | cross- on | glass | glass | cross- off | cross- off | glass | cross | glass | glass | cross- on | glass |
High Tide / height (m) | 9:23PM 1.20 | 9:29AM 1.02 | 9:53PM 1.28 | 10:07AM 1.00 | 10:23PM 1.33 | 10:44AM 0.97 | 10:54PM 1.37 | 11:21AM 0.94 | 11:26PM 1.39 | 11:57AM 0.90 | 12:01AM 1.38 | 12:34PM 0.86 | 12:37AM 1.35 | ||||||||
Low Tide / height (m) | 2:56PM 0.19 | 3:37AM 0.26 | 3:26PM 0.20 | 4:17AM 0.21 | 3:55PM 0.21 | 4:55AM 0.17 | 4:24PM 0.23 | 5:32AM 0.15 | 4:54PM 0.25 | 6:09AM 0.15 | 5:25PM 0.27 | 6:48AM 0.17 | 5:57PM 0.30 | ||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
| Sunrise | 6:35 | - | - | 6:33 | - | - | 6:33 | - | - | 6:33 | - | - | 6:33 | - | - | 6:31 | - | - | 6:31 | - | - |
| Sunset | - | 8:27 | - | - | 8:28 | - | - | 8:29 | - | - | 8:30 | - | - | 8:30 | - | - | 8:31 | - | - | 8:32 | - |
 | |  | | |  | | | | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 14 | 17 | 17 | 15 | 18 | 16 | 14 | 17 | 17 | 15 | 16 | 16 | 14 | 17 | 18 | 15 | 18 | 18 | 15 |
| Feels °C (?) | 13 | 11 | 11 | 13 | 10 | 10 | 15 | 13 | 13 | 14 | 15 | 14 | 15 | 14 | 13 | 14 | 16 | 14 | 17 | 16 | 14 |
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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 12 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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