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Surf Forecasts:

Islita surfForecast / Guanacaste / Costa Rica

information circle48hr Weather and Surf, issued 11 am Sunday 15 Mar 2026 CST
Forecast update in hr  min  s Forecast update imminent
Islita surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Islita sea temperature is
29.4° C
 (Which is 1.5°C warmer than normal for this time of year)

How big are the waves at Islita today?

The current surf forecast for Islita at 6PM is: 1.7m 18s primary swell from a South-southwest direction and 0.3m 7s secondary swell from a West-southwest direction (forecast issued at 11:00am March 15). An open ocean swell of 0.3m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (CST) & DateWave HeightWave Period
Morning (15 Mar)4.5ft (1.3m)18s
Afternoon (15 Mar)4.5ft (1.4m)18s
Evening (15 Mar)4.5ft (1.4m)17s

Table - waves today at Islita. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
4
2
1
3
4
4
4
4
4
2
1
3
4
3
4
3
3
1
1
2
3
3
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SSW
1.4
SSW
1.4
SSW
1.7
SSW
1.4
SSW
1.3
SSW
1.3
SSW
1.3
SSW
1.3
SSW
1.4
SSW
1.3
SSW
1.3
SSW
1.3
SSW
1
SW
1.2
SSW
1.2
SSW
1.1
SSW
1.2
SSW
1.3
SSW
1.2
SSW
0.8
SW
0.9
SW
0.9
SSW
0.9
SSW
Period(s) (?)181818181717161715161515151615151515161516151414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)11101259124516451125907854890669926766736726496637612485576740632371314289289
Wind
(km/h)
5
N
10
SSW
15
SW
10
WSW
5
SW
0
ESE
5
NNE
5
NE
0
E
15
SSW
15
SW
15
WSW
5
WSW
5
WNW
10
NNW
5
N
0
WNW
10
SW
15
SW
10
WSW
0
SSW
5
NW
10
NNW
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on		cross-
on		cross-
on		glassglassglassglassglassoncross-
on		crossglassglassoffoffglasscross-
on		cross-
on		crossglassglassoffoff
High Tide
/ height (m)
12:19PM
1.92
12:31AM
2.07
1:07PM
2.11
1:20AM
2.21
1:48PM
2.31
2:04AM
2.34
Low Tide
/ height (m)
6:02AM
0.74
6:20PM
0.82
6:51AM
0.62
7:12PM
0.66
7:33AM
0.48
7:57PM
0.48
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Sunrise5:48------5:48-------5:47-------5:47
Sunset--5:52-------5:52-------5:52-----
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------111---------
Temp. °C283030282727262528302928272726252830302827272625
Feels °C (?)303130303132302832323031313229293232323131312929
  • 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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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 Islita 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.

View detailed surf forecast for Islita at:
surf-forecast.com

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