Surf Forecasts:
How big are the waves at Islita today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 3.5ft (1.1m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 3ft (0.9m), 14s period with SW swell.
- Evening surf: Evening surf (18 Aug, local time) - 3.5ft (1.0m), 16s period with SW swell.
The current surf forecast for Islita at 7AM is: 1.1m 14s primary swell from a Southwest direction and 0.9m 8s secondary swell from a South direction (forecast issued at 11:00pm August 17). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 3.5ft (1.1m) | 14s |
| Afternoon (18 Aug) | 3ft (0.9m) | 14s |
| Evening (18 Aug) | 3.5ft (1.0m) | 16s |
Table - waves today at Islita. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 18mm), heaviest on Tue afternoon. Warm (max 29°C on Tue morning, min 25°C on Tue night). Wind will be generally light. | |||||||||||||||||
Tuesday 18 | Wednesday 19 | ||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||
 kJ | 428 | 410 | 410 | 410 | 422 | 379 | 331 | 400 | 477 | 477 | 453 | 355 | 355 | 350 | 305 | 248 | 245 |
Wind (km/h) | |||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | glassy | glassy | on | cross-on | cross | glassy | glassy | glassy | off | off | glassy | glassy | cross-off | off |
High Tide | 6:22AM2.54m | 6:44PM2.24m | 7:04AM2.38m | 7:29PM2.07m | |||||||||||||
Low Tide | 00:06AM0.30m | 12:40PM0.37m | 00:48AM0.46m | 1:25PM0.51m | |||||||||||||
 |  |  |  |  | | | | | | |  | |  | | | | |
 | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:57 | — | — |
mm | 2 | — | — | — | 1 | 2 | 3 | 2 | 3 | 3 | 1 | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 28 | 29 | 28 | 28 | 27 | 26 | 26 | 25 | 26 | 27 | 28 | 28 | 26 |
Feels °C | 31 | 31 | 29 | 31 | 33 | 33 | 31 | 32 | 32 | 30 | 31 | 29 | 30 | 31 | 32 | 32 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | S 8 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | S 8 | S 8 | SSW 9 |
| kJ | 428 | 410 | 410 | 410 | 422 | 379 | 120 | 400 | 477 | 477 | 453 | 355 | 355 | 350 | 113 | 116 | 126 |
Swell 2 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | S 8 | S 8 | S 8 | SW 14 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 | SSW 8 | S 8 | SW 14 | SW 14 | SW 14 |
| kJ | 112 | 108 | 88 | 93 | 100 | 124 | 331 | 117 | 95 | 95 | 101 | 109 | 112 | 91 | 305 | 248 | 245 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | S 13 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | SW 6 | NW 7 | NW 7 | SW 20 |
| kJ | 18 | 8 | 8 | 8 | 8 | 3 | 3 | 3 | 11 | 11 | 10 | 10 | 9 | 10 | 2 | 2 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||
Distance (km) | 33 | 14 | 0 | 0 | 0 | 30 | 30 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||
Header Global | |||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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