Isla Negra Surf Forecast

/ Santiago (21 surf breaks) /

Chile (94 surf breaks)

Surf Forecasts:

Isla Negra surfForecast / Santiago / Chile

12 Day Weather and Surf, issued 2 pm Monday 15 Sep 2025 -04

Forecast 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 13.0° C
(Which is normal for this time of year)

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 Tuesday (Sep 16) at 3AM. The primary swell is predicted to be 1.3m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Isla Negra in the next 12 days are 1.5m 13s and forecast to arrive on Monday (Sep 15) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 12s period and expected on Tuesday (Sep 16) at 12PM.

Wave Type	Time (-04) & Date	Wave Height & Period
Next good surf (1 star+)	3AM (Tue 16th Sep)	4.5ft (1.3m) 13s
Best Surf	3AM (Tue 16th Sep)	4.5ft (1.3m) 13s
Most Powerful	9PM (Mon 15th Sep)	5ft (1.5m) 13s

Table - best surf conditions forecast for Isla Negra over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Mostly dry. Very mild (max 15°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light.											Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Sat morning. Very mild (max 15°C on Thu afternoon, min 11°C on Sat night). Wind will be generally light.
	Mon 15		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	2	0	3	0	2	1	0	1	1	1	2	1	0	1	1	0	1	1	0	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	W	W	W	WSW	W	WSW	W	W	W	WSW	WNW
Period(s) (?)	14	13	12	16	11	11	11	11	10	10	9	9	9	10	10	10	9	8	8	8	15
Wave Graph (?)
Energy (?)	1805	0	509	31	604	464	419	278	169	262	270	235	194	268	308	469	281	152	131	110	141
Wind (km/h)	SW	SSW	S	SW	NNW	NNE	NW	NE	E	WSW	E	ENE	WNW	NNE	ENE	WNW	ENE	E	SW	S	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	off	cross- off	on	cross- on	on	cross	cross- off	cross	glass	cross	cross- on	cross- on	cross	cross- on	cross	cross- off	cross- off	off	off
High Tide / height (m)		6:36PM 0.72	6:49AM 1.23		8:08PM 0.78	8:05AM 1.28		9:05PM 0.87	9:01AM 1.34		9:47PM 0.96	9:46AM 1.37		10:22PM 1.05	10:25AM 1.38		10:53PM 1.13	10:59AM 1.35		11:23PM 1.20	11:31AM 1.30
Low Tide / height (m)		11:48PM 0.44		2:08PM 0.25	1:20AM 0.40		3:04PM 0.17	2:28AM 0.32		3:46PM 0.11		3:20AM 0.24	4:20PM 0.07		4:04AM 0.17	4:50PM 0.05		4:43AM 0.13	5:18PM 0.05		5:21AM 0.11

	Mon 15		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
Sunrise	-	-	7:45	-	-	7:43	-	-	7:41	-	-	7:39	-	-	7:39	-	-	7:37	-	-	7:35
Sunset	7:37	-	-	7:37	-	-	7:38	-	-	7:39	-	-	7:39	-	-	7:40	-	-	7:42	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	1	3	-	-	-	-	-	-
Temp. °C	14	12	14	14	12	14	15	12	15	15	13	15	15	14	15	15	13	13	14	12	15
Feels °C (?)	9	8	11	11	11	12	12	11	13	13	12	13	12	13	13	13	13	10	10	9	11

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Santiago

Wind Update Still cross-shore at Isla Negra (light winds from the WSW at Santo Domingo Airport 22 km from Isla Negra). No surfable waves
1 hour 5 minutes ago Isla Negra

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22 km away, 1 h 5 min ago

17 km/h

WSW

0.0

13.0

Air / Water (°C)

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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 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.