Isla Negra surfForecast / Santiago / Chile

information circle16 Day Weather and Surf, issued 1 pm Tuesday 12 May 2026 -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
12.1° C
(Which is 2.7°C colder than average for this time of year)

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 Tuesday (May 12) at 8PM. The primary swell is predicted to be 0.4m and 11s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Isla Negra in the next 16 days are 0.5m 15s and forecast to arrive on Wednesday (May 13) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 10s period and expected on Saturday (May 16) at 5PM.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 12th May)1.5ft (0.4m) 11s
Best Surf 8PM (Tue 12th May)1.5ft (0.4m) 11s
Most Powerful 2PM (Wed 13th May)1.5ft (0.5m) 15s

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 18°C on Thu morning, min 11°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Mon morning, min 12°C on Fri night). Wind will be generally light.

Tue
12
Wednesday
13
Thursday
14
Friday
15
Saturday
16
Sunday
17
Monday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
0
1
1
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
W
11
0.3
NW
13
0.4
WNW
15
0.5
NW
15
0.5
SW
16
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.3
NW
12
0.2
WNW
18
0.3
NW
12
0.2
WNW
13
0.3
WNW
16
0.3
WNW
16
0.1
NW
13
0.2
WNW
15
0.4
NW
15
0.4
NW
15
0.3
W
11
Wave Graph
Metric surfscale
Energy kJ
63
25
84
104
0
44
44
44
44
44
23
31
23
16
50
51
7
21
54
54
22
Wind (km/h)
10
SW
5
SSE
0
WSW
10
SW
5
NE
10
SSW
10
SSW
15
SSW
15
SSW
20
SSW
10
S
20
SSW
20
SSW
5
E
5
SSW
10
SSW
5
S
5
SW
10
SSW
5
S
10
SSW
cross-off
off
glassy
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
cross-off
glassy
cross-off
cross-off
glassy
cross-off
High Tide
6:47PM1.08m
7:40AM1.10m
7:38PM1.09m
8:18AM1.25m
8:28PM1.09m
8:57AM1.40m
9:17PM1.08m
9:39AM1.51m
10:07PM1.05m
10:24AM1.59m
10:58PM1.00m
11:12AM1.62m
11:51PM0.94m
12:03PM1.60m
Low Tide
1:18AM0.19m
1:44PM0.31m
1:53AM0.14m
2:35PM0.20m
2:30AM0.11m
3:25PM0.10m
3:08AM0.09m
4:15PM0.03m
3:49AM0.09m
5:07PM-0.01m
4:33AM0.11m
6:01PM-0.01m
5:20AM0.14m
part cloud
clear
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:30
7:31
7:31
7:31
7:33
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
5:55
5:54
5:53
5:53
5:52
5:52
5:52
Temp °C
13
12
15
15
15
18
17
15
17
15
13
13
13
13
15
15
14
16
17
14
17
11
11
15
13
14
16
14
12
14
11
9
8
8
12
12
12
12
14
14
12
14
Swell 1
Height (m)
Direction
Period (s)
0.8
SW
12
0.8
SW
12
0.9
SW
13
0.8
SW
13
0.6
SW
12
0.8
SW
14
0.8
SW
13
0.9
SW
8
1
SW
9
0.5
SW
12
1.4
SW
8
0.8
SW
17
0.9
SW
17
1.6
SW
10
1.5
SW
11
1.2
SW
10
1
SW
10
0.8
SW
10
0.8
SW
10
1
SW
13
1
SW
12
Energy kJ
178
164
249
205
116
245
212
94
148
71
286
427
459
541
487
268
185
130
130
305
291
Swell 2
Height (m)
Direction
Period (s)
0.5
W
11
0.5
SW
15
0.4
WNW
15
0.5
NW
15
0.5
SW
16
0.8
SW
8
0.4
NW
13
0.8
SW
13
0.6
SW
12
0.4
SW
16
0.6
SW
16
0.2
WNW
12
0.3
NW
12
1
SW
16
0.8
SW
15
1.1
SW
14
0.9
SW
14
0.8
SW
13
0.8
SW
13
0.4
NW
15
0.3
W
11
Energy kJ
63
104
84
104
118
82
44
199
116
94
159
14
23
480
305
520
308
246
205
54
22
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
16
0.3
NW
13
0.2
WSW
18
0.3
SW
17
0.5
SW
8
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.4
NW
13
0.3
NW
12
0.2
WNW
18
0.1
NW
18
0.2
WNW
13
0.3
WNW
16
0.3
WNW
16
0.1
NW
13
0.2
WNW
15
0.4
NW
15
0.2
W
12
0.2
WNW
15
Energy kJ
66
25
30
45
31
44
44
44
44
23
31
12
16
50
51
7
21
54
12
21
Wind waves
Height (m)
Direction
Period (s)
0.8
SW
9
1.3
SW
8
1.6
SW
9
1.8
SW
10
Energy kJ
107
211
430
707
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
2
1
1
1
1
3
2
4
3
4
1
1
3
2
1
1
1
Distance (km)
0
6
0
0
1
0
0
0
0
61
6
289
1119
1
0
0
1
13
0
0
0
Best forecast wave conditions in Santiago
Rating
(10 max)
1
3
3
3
3
3
3
3
2
3
4
4
4
4
4
3
3
3
3
Best forecast wave conditions in Chile
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
4
4
3
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
9
9
8
9
5
5
5
5
5
5
5
6
4
4
5
4
4
6
5
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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