Surf Forecasts:
How big are the waves at Ostional today (31 Aug):
- Morning surf: Morning surf (31 Aug, local time) - 4ft (1.2m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (31 Aug, local time) - 3.5ft (1.1m), 13s period with SW swell.
- Evening surf: Evening surf (31 Aug, local time) - 3.5ft (1.1m), 13s period with SW swell.
The current surf forecast for Ostional at 4PM is: 1.1m 13s primary swell from a Southwest direction and 0.5m 6s secondary swell from a South-southwest direction, 0.3m 6s secondary swell from a West-southwest direction (forecast issued at 11:00am August 31). The wind direction is predicted to be onshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Aug) | 4ft (1.2m) | 13s |
| Afternoon (31 Aug) | 3.5ft (1.1m) | 13s |
| Evening (31 Aug) | 3.5ft (1.1m) | 13s |
Table - waves today at Ostional. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Tue night. Warm (max 30°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | |||||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||||||
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 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
503 | 444 | 444 | 380 | 380 | 331 | 326 | 316 | 301 | 297 | 297 | 252 | 220 | 220 | 223 | 238 | 246 | 354 | 326 | 318 | 318 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | cross-on | glassy | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-on | on | on | cross | cross-off |
High Tide | 4:47PM2.33m | 5:06AM2.53m | 5:26PM2.28m | 5:46AM2.50m | 6:09PM2.20m | ||||||||||||||||
Low Tide | 10:42AM0.24m | 10:50PM0.23m | 11:22AM0.24m | 11:28PM0.27m | 12:04PM0.28m | ||||||||||||||||
5:33 | — | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — | |
— | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:51 | — | — | |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | 1 | 4 | 1 | — | — | 1 | 1 | 1 |
Temp °C | 29 | 30 | 29 | 28 | 28 | 26 | 26 | 25 | 29 | 29 | 29 | 27 | 27 | 26 | 26 | 26 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 33 | 32 | 33 | 32 | 32 | 29 | 29 | 28 | 33 | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 32 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 13 | SW 13 | SW 12 | SW 12 |
503 | 444 | 444 | 380 | 380 | 331 | 326 | 316 | 301 | 297 | 297 | 252 | 220 | 95 | 110 | 94 | 71 | 238 | 238 | 223 | 212 | |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | SSW 6 | SSW 6 | S 6 | S 6 | S 7 | S 7 | S 7 | S 7 | SW 18 | SW 18 | SW 18 | SW 12 | SW 12 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 16 |
12 | 12 | 14 | 20 | 18 | 22 | 23 | 33 | 33 | 32 | 112 | 112 | 112 | 220 | 223 | 238 | 238 | 354 | 326 | 318 | 318 | |
Swell 3 Height (m) Direction Period (s) | WSW 6 | SW 6 | W 10 | W 10 | W 9 | W 9 | W 9 | SW 19 | SW 18 | SW 18 | W 8 | W 8 | W 8 | SW 18 | SW 18 | SW 18 | SW 18 | SW 6 | SSW 6 | SSW 6 | SSW 6 |
3 | 5 | 8 | 7 | 7 | 14 | 14 | 56 | 84 | 113 | 12 | 12 | 5 | 112 | 154 | 194 | 246 | 20 | 31 | 29 | 30 | |
Wind waves Height (m) Direction Period (s) | — | — | WSW 6 | — | — | — | — | — | — | — | S 6 | S 6 | S 6 | — | — | — | — | — | — | — | — |
— | — | 6 | — | — | — | — | — | — | — | 51 | 50 | 60 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 17 | 17 | 25 | 0 | 0 | 0 | 0 | 0 | 25 | 227 | 11 | 0 | 0 | 0 | 0 | 7 | 25 | 308 | 7 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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