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Islita Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Islita surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 11 am Tuesday 19 May 2026 CSTForecast 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
30.7° C
(Which is 1.9°C warmer than normal for this time of year)How big are the waves at Islita today?
The current surf forecast for Islita at 5PM is: 0.6m 17s primary swell from a Southwest direction and 0.6m 14s secondary swell from a Southwest direction (forecast issued at 11:00am May 19). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 1.5ft (0.4m) | 18s |
| Afternoon (19 May) | 2ft (0.6m) | 14s |
| Evening (19 May) | 2.5ft (0.8m) | 16s |
Table - waves today at Islita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Thu night. Warm (max 32°C on Tue morning, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 18 | SW 18 | SW 14 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | |
109 | 109 | 164 | 188 | 314 | 310 | 371 | 206 | 208 | 206 | 261 | 208 | 302 | 191 | 269 | 262 | 266 | 266 | 266 | 322 | 318 | 314 | 258 | 255 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | on | on | cross-on | glassy | off | off | off | glassy | on | cross | glassy | cross-off | off | off | cross-off | glassy | on | on | on | cross-on | cross-on | glassy | glassy | |
High Tide | 4:32PM2.80m | 5:09AM2.57m | 5:24PM2.69m | 6:04AM2.52m | 6:19PM2.54m | |||||||||||||||||||
Low Tide | 10:18AM0.15m | 10:54PM-0.05m | 11:12AM0.21m | 11:47PM0.04m | 12:09PM0.32m | 00:41AM0.16m | ||||||||||||||||||
 | | |  |  | | | | | |  | |  | | | | | | | | | |  |  | |
 | 5:20 | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — |
 | — | — | 5:55 | — | — | — | — | — | — | — | 5:55 | — | — | — | — | — | — | — | 5:55 | — | — | — | — | 5:55 |
— | — | — | — | 1 | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | 1 | 3 | 1 | — | — | |
Temp °C | 30 | 32 | 31 | 30 | 29 | 28 | 27 | 27 | 30 | 32 | 30 | 30 | 29 | 28 | 27 | 27 | 30 | 31 | 31 | 29 | 28 | 28 | 28 | 28 |
34 | 34 | 34 | 35 | 34 | 31 | 30 | 30 | 34 | 34 | 34 | 35 | 33 | 32 | 30 | 30 | 34 | 33 | 34 | 33 | 32 | 32 | 33 | 33 | |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
 kJ | 103 | 103 | 164 | 167 | 314 | 310 | 371 | 206 | 208 | 206 | 261 | 208 | 302 | 191 | 269 | 262 | 266 | 266 | 266 | 322 | 318 | 314 | 258 | 255 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | SW 17 | SW 12 | SW 12 | S 7 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 13 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | S 7 | S 7 | S 8 | S 8 | S 8 |
| kJ | 28 | 28 | 28 | 188 | 73 | 73 | 16 | 113 | 114 | 114 | 83 | 138 | 103 | 69 | 68 | 66 | 65 | 61 | 59 | 14 | 25 | 28 | 28 | 41 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | S 7 | S 7 | S 7 | SSW 16 | S 7 | S 7 | S 7 | SSW 7 | S 7 | S 7 | SW 19 | S 7 | S 7 | S 7 | S 7 | S 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 |
| kJ | 109 | 109 | 109 | 27 | 26 | 16 | 52 | 16 | 15 | 15 | 16 | 15 | 15 | 126 | 15 | 15 | 14 | 8 | 9 | 30 | 30 | 29 | 29 | 27 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 9 | NW 9 | — | S 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | 14 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 39 | 64 | 56 | 0 | 0 | 0 | 0 | 0 | 56 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | 64 | 33 | 14 | 14 | 0 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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