- Forecast
- Maps
- Live
- Weather State
- Spot Information
Las Avellanas Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Las Avellanas surfForecast / Guanacaste / Costa Rica
16 Day Weather and Surf, issued 11 pm Tuesday 28 Apr 2026 CSTForecast update in hr min s Forecast update imminent
Las Avellanas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Las Avellanas sea temperature is
29.6° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Las Avellanas this week:
The surf forecast for Las Avellanas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Apr 30) at 12AM. The primary swell is predicted to be 0.6m and 13s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Las Avellanas in the next 16 days are 0.9m 15s and forecast to arrive on Wednesday (May 06) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 14s period and expected on Wednesday (Apr 29) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 30th Apr) | 2ft (0.6m) 13s |
| Best Surf | 6AM (Thu 30th Apr) | 3ft (0.9m) 13s |
| Most Powerful | 6AM (Wed 6th May) | 3ft (0.9m) 15s |
Table - best surf conditions forecast for Las Avellanas over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 32°C on Wed morning, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Sat night. Warm (max 32°C on Mon morning, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | Saturday 2 | Sunday 3 | Monday 4 | Tue 5 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
SSW 14 | WNW 16 | SSW 14 | SSW 13 | WNW 15 | SW 13 | S 10 | SSW 12 | SW 12 | WNW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 18 | SW 13 | SW 13 | SW 16 | SW 16 | SW 15 | |
371 | 25 | 308 | 135 | 42 | 63 | 0 | 52 | 39 | 40 | 67 | 66 | 63 | 106 | 104 | 152 | 96 | 113 | 206 | 314 | 171 | |
Wind (km/h) | |||||||||||||||||||||
off | off | cross-on | off | cross-off | cross-on | cross-off | cross-off | on | cross-on | cross-on | on | cross-on | glassy | on | glassy | cross-off | cross-on | cross-off | glassy | cross-on | |
High Tide | 00:57AM2.08m | 1:14PM2.32m | 1:43AM2.13m | 1:55PM2.37m | 2:24AM2.17m | 2:33PM2.40m | 3:02AM2.19m | 3:09PM2.41m | 3:39AM2.19m | 3:46PM2.39m | 4:16AM2.17m | 4:23PM2.34m | 4:54AM2.11m | 5:00PM2.26m | |||||||
Low Tide | 6:59AM0.50m | 7:36PM0.38m | 7:43AM0.47m | 8:17PM0.30m | 8:22AM0.44m | 8:54PM0.25m | 9:00AM0.42m | 9:31PM0.23m | 9:37AM0.42m | 10:07PM0.24m | 10:13AM0.45m | 10:44PM0.28m | 10:51AM0.50m | ||||||||
 |  | | |  | | | | |  | | |  |  | | | | | |  | | |
 | — | 5:26 | — | — | 5:26 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 |
— | — | — | — | — | — | — | — | — | 4 | — | — | 8 | 2 | 1 | 2 | — | 4 | 1 | 1 | 7 | |
Temp °C | 29 | 32 | 29 | 28 | 32 | 29 | 29 | 30 | 30 | 28 | 30 | 30 | 29 | 30 | 30 | 29 | 32 | 29 | 27 | 29 | 29 |
30 | 34 | 30 | 31 | 34 | 30 | 32 | 31 | 32 | 30 | 33 | 32 | 33 | 32 | 33 | 34 | 36 | 31 | 29 | 34 | 32 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 14 | SSW 14 | SSW 13 | S 12 | S 11 | S 10 | S 10 | S 10 | S 11 | S 12 | S 11 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 9 | SW 16 | SW 15 |
 kJ | 371 | 400 | 308 | 135 | 243 | 155 | 92 | 94 | 102 | 110 | 132 | 154 | 144 | 108 | 138 | 96 | 90 | 64 | 83 | 314 | 171 |
Swell 2 Height (m) Direction Period (s) | S 8 | WNW 16 | SW 13 | S 10 | WNW 15 | SW 13 | S 12 | SSW 12 | S 13 | S 13 | SSE 11 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 16 | S 9 | S 9 |
| kJ | 50 | 25 | 27 | 69 | 42 | 63 | 75 | 52 | 54 | 28 | 22 | 66 | 63 | 106 | 104 | 95 | 88 | 113 | 206 | 56 | 38 |
Swell 3 Height (m) Direction Period (s) | WNW 16 | N 5 | WNW 14 | WNW 15 | SW 14 | WNW 16 | S 15 | SW 12 | SW 12 | WNW 14 | SW 16 | SSW 12 | WNW 13 | NW 4 | NW 4 | SW 18 | SW 16 | S 15 | SW 13 | S 13 | WNW 10 |
| kJ | 25 | 2 | 20 | 21 | 31 | 48 | 17 | 38 | 39 | 40 | 67 | 15 | 17 | 6 | 4 | 152 | 96 | 106 | 83 | 55 | 36 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 4 | — | — | W 3 | — | — | WNW 2 | — | — | NW 3 | NW 4 | — | — | — | — | — | SE 3 | — | — |
| kJ | — | — | 1 | — | — | 1 | — | — | 1 | — | — | 2 | 5 | — | — | — | — | — | 5 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 11 | 1 | 0 | 0 | 64 | 11 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 64 | 0 | 0 | 1 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Las Avellanas 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 Las Avellanas Surf forecast
The above surf forecast table for Las Avellanas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Las Avellanas can be found by selecting the local surf guide option on the grey menu. Our Las Avellanas 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 (Las Avellanas) 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 Las Avellanas 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.
Las Avellanas is 45 km (28 miles) from Nicoya. If you plan a holiday in Guanacaste, look for hotels and other accommodation in Nicoya. Nicoya has rooms for a wide range of budgets as well as car hire and transport links.
Nearest