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Islita Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Islita surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 pm Thursday 21 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
30.5° C
(Which is 1.8°C warmer than normal for this time of year)How big are the waves at Islita today?
The current surf forecast for Islita at 2AM is: 0.8m 15s primary swell from a Southwest direction and 0.5m 8s secondary swell from a South direction (forecast issued at 05:00pm May 21). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 May) | 2ft (0.6m) | 14s |
| Afternoon (22 May) | 2.5ft (0.8m) | 14s |
| Evening (22 May) | 2.5ft (0.8m) | 14s |
Table - waves today at Islita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Thu night. Warm (max 31°C on Thu afternoon, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 9 AM | 12 PM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 18 | SW 19 | SW 18 | |
266 | 322 | 318 | 314 | 258 | 255 | 169 | 167 | 248 | 241 | 234 | 238 | 231 | 155 | 153 | 151 | 201 | 302 | 163 | 163 | 169 | 409 | 577 | 272 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | glassy | glassy | cross-off | glassy | on | on | on | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | off | glassy | on | |
High Tide | 6:19PM2.54m | 7:01AM2.45m | 7:17PM2.38m | 8:01AM2.38m | 8:20PM2.22m | 9:02AM2.33m | ||||||||||||||||||
Low Tide | 12:09PM0.32m | 00:41AM0.16m | 1:10PM0.44m | 1:37AM0.30m | 2:14PM0.55m | 2:37AM0.44m | ||||||||||||||||||
 |  | |  | |  | |  | | |  | | | | | | | | | | | |  | | |
 | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — |
 | 5:55 | — | — | — | — | — | — | — | 5:55 | — | — | — | — | — | — | — | 5:55 | — | — | — | — | — | — | 5:57 |
— | 1 | 3 | — | — | 2 | 1 | — | 1 | 1 | — | — | 1 | 1 | — | — | 1 | 2 | — | — | — | — | — | — | |
Temp °C | 31 | 29 | 29 | 28 | 28 | 27 | 30 | 31 | 30 | 29 | 29 | 28 | 28 | 27 | 30 | 31 | 30 | 29 | 28 | 28 | 28 | 27 | 29 | 30 |
33 | 33 | 33 | 33 | 33 | 31 | 35 | 34 | 33 | 33 | 34 | 33 | 33 | 31 | 35 | 34 | 34 | 34 | 34 | 33 | 33 | 31 | 34 | 32 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 18 | SW 19 | S 8 |
 kJ | 266 | 322 | 318 | 314 | 258 | 255 | 169 | 167 | 248 | 241 | 234 | 238 | 231 | 78 | 97 | 90 | 84 | 80 | 80 | 84 | 84 | 409 | 577 | 66 |
Swell 2 Height (m) Direction Period (s) | SW 11 | S 7 | S 7 | S 7 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 9 | S 9 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 13 | SW 16 | SW 16 | S 8 | S 8 | SW 15 |
| kJ | 59 | 15 | 16 | 27 | 28 | 28 | 41 | 42 | 43 | 45 | 65 | 78 | 80 | 155 | 153 | 151 | 201 | 302 | 109 | 163 | 169 | 88 | 68 | 178 |
Swell 3 Height (m) Direction Period (s) | S 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SW 21 | SW 13 | SSW 10 | SW 16 | SW 13 | SW 13 | SW 9 | SW 9 | SW 18 |
| kJ | 9 | 30 | 30 | 29 | 29 | 27 | 26 | 25 | 16 | 15 | 15 | 9 | 9 | 9 | 9 | 70 | 58 | 9 | 163 | 108 | 85 | 3 | 3 | 272 |
Wind waves Height (m) Direction Period (s) | S 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 266 | 33 | 30 | 0 | 0 | 0 | 0 | 39 | 138 | 33 | 0 | 0 | 0 | 0 | 0 | 64 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | 57 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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