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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 Saturday 16 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
30.6° C
(Which is 1.7°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: 0.8m 13s primary swell from a Southwest direction and 0.5m 9s secondary swell from a South direction (forecast issued at 11:00am May 16). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 May) | 3ft (0.9m) | 13s |
| Afternoon (16 May) | 3ft (0.9m) | 13s |
| Evening (16 May) | 2.5ft (0.8m) | 13s |
Table - waves today at Islita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Sat night. Warm (max 31°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SW 13 | SW 13 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 12 | SSW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SW 16 | SW 13 | SSW 17 | SW 18 | SW 18 | |
257 | 253 | 253 | 205 | 219 | 253 | 257 | 250 | 136 | 142 | 142 | 99 | 101 | 180 | 178 | 175 | 175 | 178 | 154 | 132 | 178 | 202 | 246 | 152 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | on | cross-on | glassy | glassy | glassy | glassy | cross-off | glassy | on | on | on | glassy | glassy | cross-off | cross-off | glassy | on | on | cross-on | glassy | glassy | off | off | |
High Tide | 2:00PM2.77m | 2:36AM2.48m | 2:50PM2.85m | 3:26AM2.55m | 3:41PM2.86m | 4:17AM2.58m | ||||||||||||||||||
Low Tide | 7:44AM0.29m | 8:26PM0.02m | 8:35AM0.19m | 9:14PM-0.06m | 9:26AM0.14m | 10:04PM-0.09m | ||||||||||||||||||
 | |  |  | |  |  |  | | | |  | | | | |  | | | | | | | | |
 | 5:20 | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — |
 | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | 5:55 |
— | — | 1 | 3 | 4 | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | 1 | — | — | — | — | |
Temp °C | 30 | 31 | 30 | 29 | 29 | 28 | 27 | 27 | 29 | 31 | 31 | 30 | 29 | 28 | 27 | 27 | 30 | 31 | 31 | 29 | 29 | 28 | 27 | 27 |
35 | 34 | 33 | 34 | 35 | 33 | 31 | 31 | 33 | 34 | 34 | 34 | 34 | 32 | 31 | 31 | 34 | 33 | 34 | 33 | 34 | 33 | 31 | 31 | |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SW 13 | SW 13 | SSW 14 | SSW 14 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SSW 13 | SW 13 | S 7 | S 7 | S 7 |
 kJ | 257 | 253 | 253 | 205 | 219 | 253 | 257 | 250 | 136 | 122 | 99 | 99 | 101 | 180 | 178 | 175 | 175 | 178 | 154 | 116 | 178 | 34 | 33 | 32 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | SSW 12 | SSW 15 | SSW 15 | S 7 | S 7 | S 6 | S 6 | S 8 | S 8 | S 8 | S 8 | S 7 | S 7 | SSW 13 | SW 18 | SSW 12 |
| kJ | 41 | 40 | 40 | 40 | 40 | 40 | 39 | 36 | 96 | 142 | 142 | 23 | 21 | 19 | 11 | 31 | 30 | 29 | 41 | 39 | 36 | 114 | 246 | 103 |
Swell 3 Height (m) Direction Period (s) | NW 8 | NW 12 | NW 12 | SW 16 | SW 16 | SW 20 | SW 20 | SW 20 | S 9 | S 8 | S 8 | SSW 14 | SSW 14 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 18 | SSW 17 | SSW 13 | SW 18 |
| kJ | 3 | 6 | 6 | 63 | 61 | 15 | 15 | 15 | 36 | 35 | 34 | 82 | 82 | 81 | 82 | 86 | 79 | 71 | 69 | 132 | 152 | 202 | 109 | 152 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 64 | 109 | 0 | 0 | 0 | 0 | 0 | 0 | 56 | 64 | 56 | 0 | 0 | 0 | 0 | 0 | 70 | 270 | 64 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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