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Diria Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Diria surfForecast / Guanacaste / Costa Rica
48hr Weather and Surf, issued 5 am Thursday 30 Apr 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
29.7° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Diria today?
The current surf forecast for Diria at 9AM is: 0.3m 15s primary swell from a West-northwest direction and 0.3m 14s secondary swell from a Southwest direction (forecast issued at 05:00am April 30). An open ocean swell of 0.9m 12s is not directed at the surf break, a second open ocean swell of 0.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 1ft (0.3m) | 15s |
| Afternoon (30 Apr) | 1.5ft (0.4m) | 13s |
| Evening (30 Apr) | 1.5ft (0.4m) | 12s |
Table - waves today at Diria. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Fri night. Warm (max 32°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 | 9 PM | 12 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 13 | WNW 15 | WNW 15 | SW 13 | SW 13 | SW 13 | SSW 12 | S 10 | WNW 13 | SW 12 | SSW 12 | SSW 13 | SSW 13 | SW 12 | WNW 14 | WNW 14 | WNW 14 | NW 4 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | |
135 | 42 | 42 | 63 | 63 | 44 | 49 | 0 | 18 | 38 | 52 | 55 | 55 | 25 | 40 | 40 | 18 | 2 | 67 | 66 | 66 | 66 | 65 | 63 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-on | cross-on | cross | off | off | off | off | cross-off | on | on | cross-on | cross-off | cross-off | glassy | cross-off | cross | on | cross-on | cross | cross | glassy | |
High Tide | 1:43AM2.13m | 1:55PM2.37m | 2:24AM2.17m | 2:33PM2.40m | 3:02AM2.19m | 3:09PM2.41m | ||||||||||||||||||
Low Tide | 7:43AM0.47m | 8:17PM0.30m | 8:22AM0.44m | 8:54PM0.25m | 9:00AM0.42m | 9:31PM0.23m | ||||||||||||||||||
 |  | |  | |  | | | | | | | |  | | |  | | | | | | | | |
 | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | 5:24 |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | 5:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 4 | — | — | — | — | — | 2 | 1 | 1 | |
Temp °C | 27 | 26 | 30 | 32 | 30 | 30 | 30 | 28 | 27 | 27 | 30 | 31 | 30 | 29 | 27 | 27 | 27 | 27 | 29 | 30 | 29 | 28 | 28 | 28 |
30 | 29 | 32 | 34 | 31 | 32 | 33 | 29 | 29 | 29 | 32 | 32 | 31 | 32 | 29 | 31 | 31 | 31 | 33 | 32 | 31 | 30 | 31 | 33 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | S 13 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 11 | S 11 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 |
 kJ | 135 | 276 | 243 | 163 | 155 | 90 | 92 | 92 | 92 | 98 | 94 | 94 | 94 | 106 | 110 | 157 | 132 | 132 | 132 | 155 | 154 | 149 | 146 | 144 |
Swell 2 Height (m) Direction Period (s) | S 10 | WNW 15 | SW 14 | SW 13 | SW 13 | SSW 11 | SSW 12 | S 12 | S 12 | SSW 12 | SSW 12 | SSW 13 | SSW 13 | S 13 | S 13 | WNW 14 | SSE 10 | SSE 11 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 |
| kJ | 94 | 42 | 31 | 63 | 63 | 43 | 49 | 75 | 76 | 29 | 52 | 55 | 55 | 53 | 29 | 40 | 22 | 22 | 67 | 66 | 66 | 66 | 65 | 63 |
Swell 3 Height (m) Direction Period (s) | WNW 15 | S 16 | WNW 15 | WNW 15 | WNW 16 | SW 13 | SW 12 | S 15 | WNW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 12 | WNW 14 | SW 13 | WNW 14 | NW 4 | SSE 11 | SW 13 | NNW 4 | NNW 4 | WNW 4 | WNW 13 |
| kJ | 21 | 20 | 42 | 44 | 48 | 44 | 38 | 17 | 18 | 38 | 38 | 39 | 26 | 25 | 40 | 26 | 18 | 2 | 22 | 25 | 1 | 1 | 2 | 17 |
Wind waves Height (m) Direction Period (s) | NE 4 | — | NNE 5 | NNW 5 | WNW 2 | — | — | — | NNE 4 | NNE 4 | — | NNW 4 | WNW 3 | W 3 | — | NW 4 | NW 4 | — | — | NW 4 | — | — | — | — |
| kJ | 1 | — | 2 | 4 | 1 | — | — | — | 1 | 1 | — | 1 | 1 | 1 | — | 1 | 1 | — | — | 2 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 1 | 0 | 9 | 17 | 9 | 0 | 14 | 14 | 0 | 0 | 9 | 9 | 9 | 1 | 0 | 9 | 14 | 6 | 9 | 9 | 9 | 8 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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