Surf Forecasts:
How big are the waves at Islita today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 3ft (0.9m), 19s period with SW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 3ft (0.9m), 19s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 2.5ft (0.8m), 18s period with SW swell.
The current surf forecast for Islita at 2PM is: 0.9m 19s primary swell from a Southwest direction and 0.8m 7s secondary swell from a South direction (forecast issued at 11:00am September 20). The wind direction is predicted to be onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 3ft (0.9m) | 19s |
| Afternoon (20 Sep) | 3ft (0.9m) | 19s |
| Evening (20 Sep) | 2.5ft (0.8m) | 18s |
Table - waves today at Islita. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 31mm), heaviest during Mon morning. Warm (max 29°C on Sun morning, min 25°C on Tue night). Wind will be generally light. | |||||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 621 | 621 | 614 | 510 | 452 | 437 | 510 | 510 | 679 | 679 | 582 | 487 | 380 | 443 | 443 | 504 | 498 | 427 | 421 | 421 | 421 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | glassy | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 8:58AM1.94m | 9:50PM1.76m | 10:09AM1.90m | 11:03PM1.81m | 11:18AM1.95m | ||||||||||||||||
Low Tide | 3:34PM0.82m | 3:52AM0.96m | 4:45PM0.81m | 5:06AM0.93m | 5:45PM0.75m | ||||||||||||||||
 | |  |  |  |  | |  | | | | | | |  | | | | | | | |
 | 5:31 | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — |
 | — | — | 5:38 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — |
mm | — | — | — | — | — | 2 | 3 | 3 | 5 | 2 | — | — | — | — | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
Temp °C | 27 | 29 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 31 | 33 | 32 | 31 | 31 | 31 | 30 | 30 | 29 | 30 | 31 | 31 | 31 | 30 | 29 | 29 | 30 | 30 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | S 7 | S 7 | SSW 7 | SSW 6 | SSW 6 | SW 16 | SW 16 | SW 16 | SSW 6 | SW 16 | SW 16 | SW 16 |
| kJ | 621 | 621 | 614 | 510 | 452 | 437 | 510 | 510 | 679 | 94 | 110 | 93 | 90 | 70 | 443 | 504 | 498 | 88 | 421 | 421 | 421 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SSW 7 | SSW 7 | SW 11 | SW 16 | S 7 | S 7 | S 7 |
| kJ | 60 | 59 | 61 | 66 | 68 | 52 | 51 | 48 | 61 | 679 | 582 | 487 | 380 | 443 | 58 | 64 | 30 | 427 | 53 | 39 | 39 |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SSW 11 | SW 11 | SW 11 | SW 11 | SW 6 | WSW 6 | WSW 6 |
| kJ | 116 | 114 | 94 | 93 | 91 | 90 | 85 | 82 | 60 | 59 | 59 | 58 | 58 | 58 | 47 | 30 | 30 | 30 | 31 | 26 | 26 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 7 | — | — | — | — | — | — | SSE 3 | S 7 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 107 | — | — | — | — | — | — | 7 | 107 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 0 | 0 | 57 | 57 | 5 | 33 | 0 | 14 | 14 | 30 | 70 | 0 | 19 | 14 | 14 | 19 | 59 | 39 | 39 | 14 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
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