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Surf Forecasts:

Las Avellanas surf break

Las Avellanas surfForecast / Guanacaste / Costa Rica

information circle12 Day Weather and Surf, issued 11 am Friday 23 Jan 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
28.1° C
 (Which is 1.3°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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jan 23) at 6PM. The primary swell is predicted to be 0.6m and 13s period with a secondary swell of 0.5m and 4s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Las Avellanas in the next 12 days are 0.7m 14s and forecast to arrive on Friday (Jan 30) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Jan 30) at 12AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Fri 23rd Jan)2ft (0.6m) 13s
Best Surf 3AM (Sat 24th Jan)2ft (0.6m) 13s
Most Powerful 9AM (Fri 30th Jan)2.5ft (0.7m) 14s

Table - best surf conditions forecast for Las Avellanas over the next 12 days.

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

Short Range Forecast Mostly dry. Warm (max 31°C on Fri morning, min 23°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 32°C on Wed afternoon, min 23°C on Mon night). Winds increasing (calm on Mon afternoon, fresh winds from the NE by Tue morning).

Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
1
1
0
1
1
0
1
2
1
1
0
0
0
0
0
2
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.5
SSW
0.5
SSW
0.5
SW
0.6
SSW
0.5
SW
0.6
SSW
0.5
SSW
0.6
SSW
0.7
SSW
0.6
SSW
0.4
SW
0.8
WNW
0.8
WNW
0.6
SSW
0.5
SW
0.7
SSW
0.6
SSW
Period(s) (?)131313131515121213151414131218121016161515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)142140138128123121711018617212014314911987171123173124196144
Wind
(km/h)
25
ENE
5
S
15
ENE
25
ENE
15
SW
20
ENE
15
NE
15
W
10
SE
10
ENE
5
W
20
ENE
30
NE
35
NE
30
ENE
35
NE
25
NE
20
ENE
25
NE
30
NE
20
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcrossoffoffcross-
on		offcross-
off		oncross-
off		cross-
off		glassoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off
High Tide
/ height (m)
5:56PM
2.41
6:09AM
2.23
6:37PM
2.42
6:54AM
2.14
7:22PM
2.39
7:44AM
2.04
8:14PM
2.34
8:44AM
1.96
9:15PM
2.29
9:53AM
1.90
10:24PM
2.27
11:09AM
1.92
11:36PM
2.29
Low Tide
/ height (m)
11:38AM
0.26
12:07AM
0.40
12:16PM
0.31
12:53AM
0.42
12:59PM
0.37
1:44AM
0.45
1:49PM
0.45
2:42AM
0.49
2:47PM
0.52
3:49AM
0.51
3:56PM
0.57
5:01AM
0.48
5:11PM
0.56
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Sunrise6:05--6:05--6:05--6:05--6:05--6:05--6:05--
Sunset-5:44--5:44--5:45--5:45--5:45--5:45--5:45-
clear
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C313027312926292826313127313127303227303126
Feels °C (?)323228333028302928323330272725273026272825
  • Map Icons:
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  • 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:
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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 12 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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