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Surf Forecasts:

Las Avellanas surf break

Las Avellanas surfForecast / Guanacaste / Costa Rica

information circle16 Day Weather and Surf, issued 11 am Saturday 14 Mar 2026 CST
Forecast 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
28.8° C
 (Which is 1.5°C warmer than normal for this time of year)

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 (Mar 14) at 9PM. The primary swell is predicted to be 0.9m and 19s period with a secondary swell of 0.8m and 12s. 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 1.5m 18s and forecast to arrive on Sunday (Mar 15) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 14s period and expected on Friday (Mar 20) at 6AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 14th Mar)3ft (0.9m) 19s
Best Surf12AM (Sun 15th Mar)3.5ft (1.1m) 19s
Most Powerful 3PM (Sun 15th Mar)5ft (1.5m) 18s

Table - best surf conditions forecast for Las Avellanas over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 32°C on Sat morning, min 24°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Wed night. Warm (max 31°C on Thu morning, min 25°C on Tue night). Wind will be generally light.

Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
4
3
1
4
4
1
3
3
0
3
2
0
2
1
0
3
2
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SSW
0.6
SSW
1.1
SSW
1.3
SSW
1.5
SSW
1.2
SSW
1.4
SSW
1.1
SW
1
SW
0.9
SW
0.9
SSW
0.9
SSW
0.8
SW
0.8
SSW
0.7
SSW
0.5
SW
0.5
SW
0.9
SSW
0.9
SSW
0.9
SSW
0.7
SW
Period(s) (?)212119181817171616161614141313141315141315
Wave
Graph
(?)Metric surfscale
Energy kJ (?)30730392210421324776110861750240241928925120117610087355341299209
Wind
(km/h)
25
ENE
15
SW
20
ENE
15
ENE
20
WSW
10
E
5
E
20
WSW
0
SE
0
NNE
20
WSW
0
WSW
5
NNE
20
WSW
0
NW
5
NE
15
WSW
15
E
25
ENE
15
WSW
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
on		offcross-
off		onoffoffcross-
on		glassglassonglassglassonglasscross-
off		onoffoffcross-
on		off
High Tide
/ height (m)
11:14AM
1.70
11:30PM
1.88
12:16PM
1.83
12:29AM
1.98
1:05PM
2.00
1:18AM
2.10
1:46PM
2.19
2:02AM
2.23
2:25PM
2.38
2:44AM
2.33
3:04PM
2.54
3:25AM
2.41
3:43PM
2.66
Low Tide
/ height (m)
5:13PM
0.89
6:00AM
0.71
6:18PM
0.79
6:50AM
0.60
7:10PM
0.64
7:32AM
0.48
7:55PM
0.47
8:11AM
0.35
8:37PM
0.31
8:49AM
0.24
9:18PM
0.17
9:28AM
0.16
9:59PM
0.07
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Sunrise5:50--5:50--5:50--5:48--5:48--5:48--5:47--
Sunset-5:53--5:53--5:53--5:53--5:53--5:53--5:53-
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
rain showers
part cloud
part cloud
clear
part cloud
part cloud
clear
Rain (mm)
--------------5------
Temp. °C323128312927302927302927302927312927312827
Feels °C (?)333227322930313030313030303030322930322929
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 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.

View detailed surf forecast for Las Avellanas at:
surf-forecast.com

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.

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