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Diria Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Diria surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 11 pm Monday 11 May 2026 CSTForecast update in hr min s Forecast update imminent
Diria surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Diria sea temperature is
30.0° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Diria today?
The current surf forecast for Diria at 6AM is: 0.8m 15s primary swell from a Southwest direction and 0.2m 3s secondary swell from a North direction (forecast issued at 11:00pm May 11). An open ocean swell of 0.8m 10s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2.5ft (0.8m) | 15s |
| Afternoon (12 May) | 2.5ft (0.8m) | 14s |
| Evening (12 May) | 2.5ft (0.7m) | 14s |
Table - waves today at Diria. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 33°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 18 | SW 17 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | |
322 | 314 | 258 | 255 | 255 | 255 | 251 | 211 | 208 | 203 | 154 | 147 | 184 | 216 | 216 | 371 | 477 | 516 | 558 | 558 | 551 | 536 | 529 | 313 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | cross-off | on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross | glassy | cross-off | off | off | off | cross-off | cross-off | on | cross-on | cross-off | |
High Tide | 10:34AM2.07m | 11:00PM1.90m | 11:28AM2.22m | 11:58PM2.00m | 12:19PM2.38m | |||||||||||||||||||
Low Tide | 4:07AM0.69m | 4:57PM0.69m | 5:04AM0.63m | 5:54PM0.52m | 5:58AM0.52m | |||||||||||||||||||
 | | |  | |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — |
 | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 30 | 28 | 27 | 27 | 30 | 31 | 29 | 29 | 29 | 28 | 26 | 26 | 30 | 33 | 33 | 31 | 29 | 28 | 27 | 27 | 30 | 31 | 29 | 30 |
30 | 28 | 28 | 28 | 31 | 32 | 30 | 31 | 32 | 31 | 28 | 29 | 31 | 34 | 36 | 33 | 30 | 29 | 29 | 29 | 31 | 33 | 31 | 34 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | S 10 | S 10 | SW 15 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
 kJ | 322 | 314 | 258 | 128 | 128 | 255 | 133 | 133 | 133 | 131 | 131 | 133 | 136 | 92 | 92 | 371 | 477 | 516 | 558 | 558 | 551 | 536 | 529 | 313 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | SW 15 | SW 15 | S 10 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 14 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SW 16 |
| kJ | 112 | 100 | 128 | 255 | 255 | 130 | 251 | 211 | 208 | 203 | 151 | 147 | 147 | 144 | 147 | 94 | 138 | 136 | 135 | 104 | 102 | 102 | 73 | 261 |
Swell 3 Height (m) Direction Period (s) | N 4 | N 4 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | N 4 | N 4 | SW 18 | SW 18 | SW 18 | SW 17 | SSW 17 | SW 16 | SW 16 | SSW 13 | N 4 | NNE 4 | N 4 | NW 15 | NW 15 | NW 15 | NNW 4 | S 10 |
| kJ | 3 | 1 | 42 | 42 | 42 | 42 | 6 | 3 | 82 | 81 | 154 | 147 | 184 | 216 | 216 | 113 | 6 | 6 | 1 | 9 | 9 | 9 | 4 | 69 |
Wind waves Height (m) Direction Period (s) | — | NNE 4 | N 3 | N 3 | N 3 | N 4 | — | — | — | — | — | N 7 | — | NNW 5 | N 4 | — | — | — | — | N 12 | NNW 8 | — | — | — |
| kJ | — | 4 | 1 | 1 | 1 | 3 | — | — | — | — | — | 1 | — | 7 | 7 | — | — | — | — | 11 | 6 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 9 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 9 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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