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Surf Forecasts:

Islita surfForecast / Guanacaste / Costa Rica

information circle48hr Weather and Surf, issued 11 am Sunday 18 Jan 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
28.5° C
 (Which is 1.3°C warmer than normal for this time of year)

How big are the waves at Islita today?

The current surf forecast for Islita at 2PM is: 0.4m 12s primary swell from a Southwest direction and 0.3m 12s secondary swell from a South-southwest direction (forecast issued at 11:00am January 18). The wind direction is predicted to be glassy.

Time (CST) & DateWave HeightWave Period
Morning (18 Jan)1.5ft (0.5m)12s
Afternoon (18 Jan)1.5ft (0.4m)12s
Evening (18 Jan)1ft (0.3m)17s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
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)
1
0
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
0
1
1
2
1
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.5
SW
0.4
SW
0.4
SW
0.4
SSW
0.3
SSW
0.4
SSW
0.4
SSW
0.4
SSW
0.4
SSW
0.5
S
0.6
SSW
0.6
SSW
0.5
S
0.6
SSW
0.5
S
0.5
S
0.5
SSW
0.6
SSW
0.5
SSW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.5
SW
Period(s) (?)121212121716161616151515141413131313131818171616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6936365457868685811101671671071439090101137938310910669125
Wind
(km/h)
10
NE
5
S
5
SSE
5
ENE
15
NNE
15
NNE
15
NNE
15
NNE
10
NE
5
ESE
10
S
5
ESE
10
NNE
15
NNE
15
N
10
NNE
10
NE
5
SSE
5
S
5
ENE
10
NNE
10
NNE
10
N
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		onglassglassoffoffoffcross-
off		cross-
off		glassonglassoffoffoffoffcross-
off		onglassglassoffoffoffoff
High Tide
/ height (m)
2:53PM
2.15
2:56AM
2.38
3:31PM
2.26
3:35AM
2.43
4:08PM
2.36
4:13AM
2.46
Low Tide
/ height (m)
8:41AM
0.39
8:48PM
0.59
9:18AM
0.31
9:28PM
0.52
9:54AM
0.25
10:07PM
0.46
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Sunrise6:03-------6:03-------6:03-------
Sunset--5:39-------5:40-------5:40-----
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C283030282625252528303028262525242830292826252424
Feels °C (?)313334322726262630323132282626253032313228272526
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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