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Islita Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Islita surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 11 pm Monday 11 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
30.4° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Islita today?
The current surf forecast for Islita at 4AM is: 0.6m 15s primary swell from a Southwest direction and 0.8m 10s secondary swell from a South direction (forecast issued at 11:00pm May 11). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2.5ft (0.7m) | 15s |
| Afternoon (12 May) | 2.5ft (0.7m) | 14s |
| Evening (12 May) | 2.5ft (0.7m) | 14s |
Table - waves today at Islita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 32°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 | 3 PM | 6 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 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | |
322 | 314 | 174 | 217 | 217 | 217 | 214 | 169 | 206 | 197 | 189 | 152 | 147 | 219 | 216 | 502 | 483 | 453 | 509 | 429 | 551 | 543 | 536 | 313 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | off | off | off | glassy | on | cross-on | on | glassy | glassy | glassy | off | cross-off | on | cross-on | on | glassy | glassy | glassy | off | glassy | on | on | glassy | |
High Tide | 10:35AM2.17m | 11:02PM2.00m | 11:29AM2.32m | 00:00AM2.11m | 12:20PM2.49m | |||||||||||||||||||
Low Tide | 4:09AM0.72m | 4:58PM0.71m | 5:05AM0.65m | 5:54PM0.53m | 6:00AM0.54m | |||||||||||||||||||
 |  |  |  | | | | |  | | |  | | | | | | | | | | | | | |
 | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — |
 | — | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:54 | — |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | |
Temp °C | 29 | 28 | 27 | 27 | 29 | 30 | 30 | 29 | 28 | 28 | 27 | 26 | 30 | 32 | 30 | 29 | 29 | 28 | 27 | 27 | 30 | 30 | 30 | 29 |
34 | 31 | 30 | 30 | 33 | 32 | 33 | 33 | 32 | 33 | 31 | 29 | 32 | 34 | 32 | 33 | 34 | 33 | 31 | 31 | 35 | 32 | 33 | 33 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 |
 kJ | 322 | 314 | 141 | 130 | 130 | 130 | 130 | 141 | 125 | 125 | 125 | 128 | 131 | 133 | 138 | 502 | 483 | 453 | 509 | 429 | 551 | 543 | 536 | 313 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 16 |
| kJ | 112 | 102 | 174 | 217 | 217 | 217 | 214 | 169 | 206 | 197 | 189 | 147 | 147 | 144 | 144 | 133 | 133 | 100 | 98 | 96 | 96 | 69 | 68 | 226 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 8 | SSW 15 | SSW 15 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | W 12 | NW 12 | W 12 | W 12 | W 12 | W 12 | W 15 | W 15 | S 10 |
| kJ | 1 | 1 | 71 | 42 | 69 | 42 | 21 | 37 | 85 | 83 | 154 | 152 | 147 | 219 | 216 | 3 | 6 | 3 | 3 | 3 | 3 | 4 | 4 | 68 |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 8 | — | — | — | — | — | — | — | NW 8 | NW 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 3 | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 57 | 64 | 64 | 0 | 0 | 0 | 0 | 0 | 30 | 59 | 56 | 0 | 0 | 0 | 0 | 0 | 64 | 64 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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