Surf Forecasts:
Scardog Reef surf forecast from 18 Sep 2026:
- Best quality surf: Sunday 20 Sep, 6AM (local time) - 2.5ft (0.8m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 12PM (local time) - 3.5ft (1.0m), 18s period, SW swell with 588 kJ wave energy.
- Next surfable swell (1★+): Friday 18 Sep, 12PM (local time) - 2.5ft (0.8m), 13s period with SW swell.
Best Forecast Surf Conditions for Scardog Reef this week:
The surf forecast for Scardog Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 18) at 12PM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.5m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Scardog Reef in the next 16 days are 1.0m 18s and forecast to arrive on Monday (Sep 21) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Sep 20) at 6PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Fri 18th Sep) | 2.5ft (0.8m) 13s |
| Best Surf | 6AM (Sun 20th Sep) | 2.5ft (0.8m) 19s |
| Most Powerful | 12PM (Mon 21st Sep) | 3.5ft (1.0m) 18s |
Table - best surf conditions forecast for Scardog Reef over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 32°C on Sat afternoon, min 26°C on Thu night). Winds decreasing (fresh winds from the ENE on Thu night, calm by Sat night). | Days 5-7 Weather SummaryHeavy rain (total 55mm), heaviest during Tue morning. Warm (max 31°C on Sun afternoon, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 19 | SW 19 | SW 13 | SW 18 | SW 19 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 393 | 327 | 205 | 205 | 236 | 227 | 161 | 321 | 520 | 520 | 437 | 510 | 505 | 375 | 432 | 357 | 416 | 284 | 262 | 301 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:52PM1.97m | 7:09AM2.11m | 7:40PM1.84m | 7:59AM1.98m | 8:37PM1.73m | 8:58AM1.88m | 9:46PM1.68m | 10:07AM1.85m | 10:59PM1.72m | 11:15AM1.88m | 00:00AM1.84m | 12:14PM1.96m | 00:48AM1.99m | |||||||
Low Tide | 00:53AM0.60m | 1:34PM0.60m | 1:39AM0.73m | 2:29PM0.71m | 2:37AM0.84m | 3:34PM0.78m | 3:48AM0.90m | 4:44PM0.78m | 5:02AM0.88m | 5:45PM0.72m | 6:05AM0.79m | 6:34PM0.63m | ||||||||
 |  |  | |  |  | |  | | | |  | | | |  | | | | | |
 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — | 5:31 | — | — |
 | 5:43 | — | — | 5:42 | — | — | 5:40 | — | — | 5:40 | — | — | 5:39 | — | — | 5:38 | — | — | 5:38 | — |
mm | 1 | — | — | — | — | — | 1 | 5 | — | 4 | 19 | — | — | 8 | 14 | 6 | 4 | — | — | 4 |
Temp °C | 31 | 27 | 30 | 31 | 29 | 31 | 32 | 29 | 30 | 31 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 |
Feels °C | 31 | 26 | 31 | 33 | 33 | 33 | 36 | 34 | 32 | 33 | 31 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 18 | SW 19 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SSW 8 | SW 7 | SW 15 | WSW 7 |
| kJ | 393 | 327 | 205 | 205 | 202 | 163 | 161 | 321 | 520 | 520 | 437 | 510 | 505 | 375 | 432 | 357 | 220 | 171 | 262 | 77 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | S 9 | SW 20 | SW 19 | SW 19 | S 8 | SW 12 | SW 12 | SW 7 | SW 12 | S 7 | SW 11 | S 7 | S 7 | SW 10 | SW 16 | SW 15 | W 7 | SW 15 |
| kJ | 45 | 39 | 36 | 188 | 236 | 227 | 45 | 118 | 114 | 44 | 108 | 48 | 58 | 34 | 46 | 28 | 416 | 284 | 28 | 301 |
Swell 3 Height (m) Direction Period (s) | SW 22 | SW 21 | SW 20 | S 9 | S 9 | S 9 | SW 18 | S 7 | S 7 | SW 12 | S 8 | SW 11 | S 7 | SW 11 | SSW 11 | WNW 5 | SW 10 | SW 10 | SW 10 | SSW 9 |
| kJ | 118 | 160 | 144 | 37 | 39 | 36 | 155 | 36 | 24 | 114 | 43 | 77 | 24 | 58 | 46 | 3 | 46 | 4 | 25 | 8 |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 4 | NE 4 | — | — | NNE 3 | — | — | — | — | NW 4 | — | NW 5 | — | S 6 | S 7 | — | — | SSW 7 | S 7 |
| kJ | 22 | 17 | 4 | — | — | 1 | — | — | — | — | 4 | — | 5 | — | 6 | 131 | — | — | 76 | 39 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 6 | 14 | 14 | 0 | 6 | 6 | 0 | 0 | 0 | 30 | 30 | 20 | 20 | 32 | 30 | 118 | 47 | 47 | 65 | 20 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Scardog Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Scardog Reef Surf forecast
The above surf forecast table for Scardog Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Scardog Reef can be found by selecting the local surf guide option on the grey menu. Our Scardog Reef surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Scardog Reef) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Scardog Reef may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Scardog Reef is 44 km (27 miles) from San Juan del Sur. If you plan a holiday in Guanacaste, look for hotels and other accommodation in San Juan del Sur. San Juan del Sur has rooms for a wide range of budgets as well as car hire and transport links.
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