Surf Forecasts:
How big are the waves at Islita today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 2.5ft (0.8m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 2.5ft (0.8m), 13s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 2ft (0.6m), 20s period with SW swell.
The current surf forecast for Islita at 5PM is: 0.6m 20s primary swell from a Southwest direction and 0.8m 13s secondary swell from a Southwest direction, 0.6m 9s secondary swell from a South direction (forecast issued at 11:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 2.5ft (0.8m) | 13s |
| Afternoon (18 Sep) | 2.5ft (0.8m) | 13s |
| Evening (18 Sep) | 2ft (0.6m) | 20s |
Table - waves today at Islita. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 29mm), heaviest during Sun afternoon. Warm (max 31°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||||
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 13 | SW 13 | SW 13 | SW 20 | SW 20 | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 21 | SW 18 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 205 | 205 | 205 | 239 | 239 | 236 | 236 | 234 | 227 | 206 | 199 | 199 | 274 | 328 | 432 | 441 | 621 | 621 | 614 | 510 | 452 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | cross-on | glassy | glassy | off | off | glassy | on | cross-on | glassy | glassy | cross | glassy | cross-off | glassy | on | cross-on | glassy | cross-off |
High Tide | 7:06AM2.18m | 7:39PM1.92m | 7:56AM2.04m | 8:38PM1.80m | 8:58AM1.94m | ||||||||||||||||
Low Tide | 1:31PM0.63m | 1:39AM0.79m | 2:27PM0.75m | 2:38AM0.91m | 3:34PM0.82m | ||||||||||||||||
 | |  |  | |  |  | | | | | | | | |  | | | | | | |
 | 5:31 | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | 5:39 | — | — | — | — | — | — | — | 5:38 | — | — | — | — | — | — | — | 5:38 | — | — |
mm | — | — | — | 2 | 3 | — | — | — | — | — | — | — | 3 | 4 | 1 | 2 | — | — | 2 | 5 | 4 |
Temp °C | 29 | 31 | 30 | 28 | 28 | 28 | 27 | 26 | 29 | 30 | 30 | 28 | 27 | 27 | 26 | 27 | 28 | 29 | 29 | 27 | 26 |
Feels °C | 33 | 35 | 34 | 32 | 33 | 33 | 31 | 30 | 34 | 33 | 34 | 33 | 32 | 31 | 31 | 31 | 33 | 33 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | S 7 | S 7 | S 7 | SW 18 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 |
| kJ | 205 | 205 | 205 | 205 | 175 | 175 | 172 | 172 | 134 | 134 | 51 | 51 | 51 | 328 | 432 | 441 | 621 | 621 | 614 | 510 | 452 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 9 | S 9 | S 9 | SW 20 | SW 19 | SW 19 | SW 19 | S 8 | S 8 | SW 13 | SW 12 | SW 12 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | SSW 7 |
| kJ | 51 | 52 | 53 | 55 | 239 | 236 | 236 | 234 | 44 | 54 | 132 | 126 | 120 | 51 | 36 | 34 | 47 | 48 | 64 | 64 | 63 |
Swell 3 Height (m) Direction Period (s) | SW 20 | SW 20 | SW 20 | SW 20 | S 9 | S 9 | S 9 | S 8 | SW 19 | SW 18 | SW 18 | SW 18 | SW 21 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SW 12 | SSW 12 |
| kJ | 198 | 190 | 186 | 239 | 56 | 38 | 53 | 49 | 227 | 206 | 199 | 199 | 274 | 118 | 116 | 116 | 116 | 114 | 94 | 112 | 91 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 56 | 64 | 64 | 0 | 0 | 0 | 0 | 0 | 64 | 57 | 0 | 0 | 14 | 0 | 0 | 0 | 57 | 57 | 0 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
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