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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 Sunday 31 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
30.1° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Islita today (01 Jun):
- Morning surf: Morning surf (01 Jun, local time) - 5ft (1.6m), 18s period with SW swell.
- Afternoon surf: Afternoon surf (01 Jun, local time) - 5ft (1.6m), 17s period with SW swell.
- Evening surf: Evening surf (01 Jun, local time) - 5ft (1.6m), 17s period with SW swell.
The current surf forecast for Islita at 3AM is: 1.6m 18s primary swell from a Southwest direction and 1.1m 13s secondary swell from a South direction (forecast issued at 11:00pm May 31). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jun) | 5ft (1.6m) | 18s |
| Afternoon (01 Jun) | 5ft (1.6m) | 17s |
| Evening (01 Jun) | 5ft (1.6m) | 17s |
Table - waves today at Islita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 30mm), heaviest during Tue night. Warm (max 31°C on Mon morning, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | ||||||||||||||||||||||
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 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | 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 18 | SW 18 | |
1323 | 1215 | 1516 | 1482 | 1634 | 1615 | 1579 | 1560 | 1383 | 1201 | 1144 | 1001 | 989 | 894 | 894 | 783 | 773 | 743 | 649 | 631 | 543 | 543 | 1136 | 1111 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-on | on | on | on | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | |
High Tide | 3:17AM2.19m | 3:22PM2.40m | 3:56AM2.20m | 4:01PM2.38m | 4:36AM2.19m | 4:39PM2.34m | ||||||||||||||||||
Low Tide | 9:07PM0.31m | 9:13AM0.54m | 9:45PM0.30m | 9:52AM0.54m | 10:23PM0.32m | 10:32AM0.58m | ||||||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — |
 | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:59 | — |
— | 1 | 3 | 1 | 1 | — | 2 | 3 | 2 | 1 | 1 | 1 | — | 1 | 1 | 3 | 5 | — | — | 1 | — | 1 | 1 | 1 | |
Temp °C | 29 | 28 | 28 | 28 | 30 | 31 | 30 | 29 | 29 | 28 | 27 | 27 | 30 | 30 | 30 | 29 | 28 | 28 | 27 | 27 | 29 | 30 | 30 | 29 |
35 | 34 | 33 | 33 | 36 | 35 | 34 | 34 | 35 | 33 | 31 | 31 | 34 | 32 | 33 | 34 | 33 | 33 | 32 | 32 | 34 | 33 | 34 | 34 | |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | 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 18 | SW 18 |
 kJ | 1323 | 1215 | 1516 | 1482 | 1634 | 1615 | 1579 | 1560 | 1383 | 1201 | 1144 | 1001 | 989 | 894 | 894 | 783 | 773 | 743 | 649 | 631 | 543 | 543 | 1136 | 1111 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | SW 20 | SW 20 | SW 19 | SW 20 | S 10 | SSW 9 |
| kJ | 569 | 537 | 434 | 427 | 350 | 345 | 339 | 256 | 244 | 240 | 189 | 177 | 134 | 132 | 123 | 116 | 114 | 82 | 306 | 306 | 450 | 455 | 48 | 69 |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | — | — | — | — | — | W 18 | — | — | — | SW 22 | SSW 22 | SW 21 | SW 21 | SW 21 | SW 20 | SW 20 | S 11 | S 10 | S 10 | S 10 | W 15 | SW 22 |
| kJ | 248 | 200 | — | — | — | — | — | 6 | — | — | — | 18 | 45 | 72 | 113 | 108 | 137 | 188 | 82 | 78 | 74 | 49 | 4 | 163 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 57 | 57 | 64 | 0 | 0 | 0 | 0 | 14 | 39 | 64 | 33 | 0 | 0 | 0 | 0 | 0 | 57 | 64 | 5 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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