Surf Forecasts:
Las Avellanas surf forecast from 13 Jun 2026:
- Best quality surf: Monday 15 Jun, 9PM (local time) - 3.5ft (1.1m), 21s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 16 Jun, 6PM (local time) - 4.5ft (1.3m), 19s period, SW swell with 1,336 kJ wave energy.
- Next surfable swell (1★+): Saturday 13 Jun, 12PM (local time) - 3.5ft (1.1m), 16s period with SW swell.
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 Saturday (Jun 13) at 12PM. The primary swell is predicted to be 1.1m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Las Avellanas in the next 16 days are 1.3m 19s and forecast to arrive on Tuesday (Jun 16) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Monday (Jun 15) at 3PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sat 13th Jun) | 3.5ft (1.1m) 16s |
| Best Surf | 9PM (Mon 15th Jun) | 3.5ft (1.1m) 21s |
| Most Powerful | 6PM (Tue 16th Jun) | 4.5ft (1.3m) 19s |
Table - best surf conditions forecast for Las Avellanas over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Mon afternoon. Warm (max 32°C on Sun morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Tue afternoon. Warm (max 30°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||
AM | 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 16 | SW 15 | SSW 15 | SSW 14 | SW 14 | SW 15 | SW 24 | SW 14 | SW 21 | SW 21 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 15 |
Wave Graph | |||||||||||||||||||||
573 | 544 | 377 | 362 | 301 | 276 | 347 | 214 | 1005 | 742 | 1070 | 1059 | 623 | 686 | 769 | 454 | 432 | 643 | 504 | 751 | 744 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | cross-on | glassy | on | on | glassy | glassy | on | glassy | off | cross | glassy |
High Tide | 12:39PM2.51m | 1:18AM2.17m | 1:36PM2.61m | 2:14AM2.29m | 2:31PM2.67m | 3:08AM2.40m | 3:24PM2.69m | 4:02AM2.47m | 4:17PM2.66m | 4:55AM2.51m | 5:10PM2.57m | 5:48AM2.50m | 6:03PM2.45m | ||||||||
Low Tide | 7:10PM0.19m | 7:17AM0.31m | 8:04PM0.07m | 8:14AM0.22m | 8:57PM-0.02m | 9:10AM0.16m | 9:48PM-0.06m | 10:05AM0.15m | 10:39PM-0.05m | 11:00AM0.19m | 11:30PM0.01m | 11:56AM0.26m | 00:21AM0.11m | ||||||||
5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | |
— | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | |
mm | — | — | — | — | 3 | 4 | — | 7 | 1 | — | 13 | 5 | 5 | 9 | 10 | — | 2 | 2 | 3 | 2 | 3 |
Temp °C | 31 | 30 | 27 | 32 | 30 | 28 | 29 | 29 | 26 | 30 | 28 | 27 | 28 | 27 | 25 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 34 | 34 | 30 | 35 | 33 | 30 | 33 | 34 | 31 | 35 | 31 | 31 | 31 | 30 | 30 | 32 | 31 | 32 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SSW 15 | SSW 14 | SW 14 | SW 15 | SW 15 | S 6 | SW 21 | SW 21 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 15 |
573 | 544 | 377 | 362 | 301 | 276 | 309 | 68 | 1005 | 742 | 1070 | 1059 | 623 | 686 | 769 | 454 | 432 | 643 | 504 | 751 | 744 | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | S 16 | SSW 15 | S 6 | SW 14 | SW 14 | S 7 | SSW 13 | SW 12 | SSW 12 | SSW 12 | SSW 13 | SW 6 | SW 6 | SSW 13 | S 12 | SSW 12 | SSW 11 |
18 | 19 | 30 | 31 | 132 | 172 | 32 | 214 | 218 | 63 | 215 | 118 | 187 | 131 | 186 | 49 | 46 | 229 | 141 | 104 | 126 | |
Swell 3 Height (m) Direction Period (s) | W 7 | SSW 20 | SSW 18 | SSW 17 | S 8 | S 8 | SW 24 | S 14 | S 13 | SW 13 | S 7 | S 7 | S 7 | S 6 | SSW 6 | S 15 | SSW 14 | SW 6 | SW 6 | SW 6 | S 12 |
4 | 37 | 106 | 95 | 28 | 28 | 347 | 98 | 92 | 178 | 46 | 32 | 31 | 30 | 24 | 109 | 247 | 31 | 23 | 17 | 26 | |
Wind waves Height (m) Direction Period (s) | NNE 5 | NNW 4 | NNE 4 | NNE 4 | — | SSE 3 | — | — | S 6 | — | — | — | — | — | — | — | — | — | — | — | — |
7 | 5 | 5 | 5 | — | 2 | — | — | 61 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 1 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 7 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










