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Diria Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Diria surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 pm Friday 15 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
30.1° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Diria today?
The current surf forecast for Diria at 2AM is: 1.0m 14s primary swell from a Southwest direction and 0.2m 8s secondary swell from a North direction (forecast issued at 05:00pm May 15). An open ocean swell of 0.5m 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 (16 May) | 3ft (0.9m) | 13s |
| Afternoon (16 May) | 3ft (0.9m) | 13s |
| Evening (16 May) | 3ft (0.9m) | 13s |
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 Sun morning, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SSW 14 | SW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | |
469 | 469 | 456 | 373 | 357 | 352 | 309 | 309 | 304 | 304 | 253 | 253 | 253 | 261 | 288 | 253 | 288 | 243 | 180 | 178 | 175 | 175 | 175 | 178 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | off | off | off | off | cross-off | on | cross-on | cross-off | off | off | off | off | cross-off | glassy | cross-on | cross-off | off | off | off | off | cross-off | on | |
High Tide | 1:09PM2.54m | 1:44AM2.24m | 1:59PM2.66m | 2:34AM2.35m | 2:49PM2.73m | 3:24AM2.42m | ||||||||||||||||||
Low Tide | 7:36PM0.17m | 7:42AM0.28m | 8:25PM0.03m | 8:33AM0.18m | 9:14PM-0.05m | 9:24AM0.13m | ||||||||||||||||||
 |  |  | | |  |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — |
 | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | 5:58 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 31 | 32 | 30 | 28 | 27 | 27 | 31 | 32 | 29 | 30 | 29 | 28 | 27 | 27 | 31 | 33 | 30 | 31 | 29 | 28 | 27 | 27 | 30 | 30 |
33 | 34 | 30 | 30 | 30 | 30 | 33 | 35 | 30 | 34 | 31 | 30 | 29 | 30 | 32 | 37 | 31 | 34 | 29 | 29 | 29 | 30 | 33 | 31 | |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SSW 14 | SW 14 | SSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
 kJ | 469 | 469 | 456 | 373 | 357 | 352 | 309 | 309 | 304 | 304 | 253 | 253 | 253 | 261 | 288 | 253 | 288 | 243 | 180 | 178 | 175 | 175 | 175 | 178 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SSE 10 | SSE 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 7 | S 7 | S 6 | S 6 | S 6 | S 8 | S 8 |
| kJ | 46 | 66 | 46 | 52 | 50 | 43 | 42 | 41 | 40 | 40 | 40 | 25 | 25 | 25 | 24 | 35 | 35 | 23 | 21 | 20 | 12 | 12 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | NNW 4 | N 4 | N 4 | NW 12 | W 12 | NNW 8 | NNW 7 | NW 7 | NNW 4 | N 4 | N 4 | SW 20 | N 4 | SSW 20 | N 4 | SW 19 | N 4 | N 4 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 |
| kJ | 6 | 3 | 1 | 6 | 3 | 6 | 5 | 2 | 4 | 3 | 3 | 15 | 1 | 37 | 3 | 15 | 6 | 6 | 81 | 81 | 82 | 83 | 77 | 69 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | N 8 | — | — | N 4 | — | — | — | NNE 4 | NE 3 | NNE 4 | NNE 3 | N 4 | — | — | NNE 4 | NE 3 | NE 3 | NE 3 | NE 3 | — |
| kJ | — | — | — | — | 5 | — | — | 3 | — | — | — | 6 | 2 | 6 | 2 | 9 | — | — | 6 | 4 | 3 | 1 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 56 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 56 | 0 | 0 | 0 | 0 | 0 | 0 | 9 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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