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Surf Forecasts
Las Avellanas surf break

Las Avellanas surfForecast / Guanacaste / Costa Rica

information circle12 Day Weather and Surf, issued 11 pm Thursday 19 Jun 2025 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
29.6° C
 (Which is 1.1°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 (Jun 20) at 6AM. The primary swell is predicted to be 0.5m and 14s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Las Avellanas in the next 12 days are 1.7m 8s and forecast to arrive on Tuesday (Jun 24) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Wednesday (Jun 25) at 12PM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 20th Jun)1.5ft (0.5m) 14s
Best Surf12PM (Tue 24th Jun)5.5ft (1.7m) 8s
Most Powerful12PM (Tue 24th Jun)5.5ft (1.7m) 8s

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

Hourly12 Days
Guanacaste Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tue
01
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
2
1
1
2
1
1
1
1
0
1
1
2
2
2
3
2
1
2
2
2
2
2
2
1
2
1
0
2
1
0
1
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
SW
0.5
SW
0.6
SW
0.5
SW
0.7
SW
0.6
SW
0.6
SW
0.6
SW
0.5
SW
0.5
SW
0.5
SW
0.6
SW
1.5
SSW
1.6
SSW
1.7
SSW
1.6
SSW
0.5
SW
0.6
SW
0.6
SW
0.8
SW
0.8
SW
0.8
SW
0.8
SW
0.6
SW
0.7
SW
0.5
SW
0.6
SW
0.6
SW
0.4
SW
0.4
SW
0.5
SW
0.6
W
0.6
W
0.6
W
0.5
W
0.5
W
Period(s) (?)141515161414141414131314888812191817161615161414141313131277777
Wave
Graph
(?)Metric surfscale
Energy (?)263194213202195133166186122144124226406453581374133304268358563439440333319175189210109931113636372424
Wind
(km/h)
10
E
15
ENE
10
SW
10
E
15
ENE
5
SSW
15
SSE
5
E
5
SSW
10
E
5
ESE
10
E
10
ESE
10
E
10
NE
15
ESE
10
ESE
10
SE
10
SE
10
SSE
15
S
10
ESE
5
S
5
S
5
SSE
0
NE
10
WNW
5
WSW
5
E
10
SW
5
E
10
ENE
5
W
15
ENE
15
ENE
5
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
on		offcross-
off		glasscross-
off		glasscross-
on		offglassoffcross-
off		offcross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		glasscrossglassglassonglassoffcross-
on		offcross-
off		onoffcross-
off		cross-
on
High Tide
/ height (m)
9:23AM
2.32
9:53PM
1.99
10:23AM
2.38
11:00PM
2.01
11:25AM
2.44
12:04AM
2.07
12:25PM
2.50
1:05AM
2.16
1:23PM
2.55
2:03AM
2.25
2:19PM
2.59
2:57AM
2.33
3:11PM
2.59
3:48AM
2.38
4:02PM
2.55
4:38AM
2.40
4:50PM
2.47
5:27AM
2.39
5:38PM
2.37
6:14AM
2.35
6:25PM
2.24
7:00AM
2.29
Low Tide
/ height (m)
2:56AM
0.49
3:51PM
0.50
3:56AM
0.50
4:55PM
0.42
5:00AM
0.47
5:58PM
0.32
6:04AM
0.41
6:57PM
0.21
7:05AM
0.35
7:52PM
0.12
8:03AM
0.28
8:45PM
0.05
8:58AM
0.25
9:35PM
0.03
9:51AM
0.25
10:24PM
0.04
10:42AM
0.29
11:10PM
0.10
11:32AM
0.36
11:56PM
0.20
12:22PM
0.44
12:40AM
0.32
1:13PM
0.53
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Tue
01
Sunrise-5:22--5:22--5:22--5:22--5:24--5:24--5:24--5:24--5:24--5:24--5:24--5:24-
Sunset--6:06--6:06--6:07--6:07--6:07--6:07--6:07--6:07--6:07--6:07--6:07--6:07
clearpart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm mod rainrain showersthunderstorm heavy rainheavy rainmod rainlight rainmod rainlight rainmod rainthunderstorm mod rainthunderstorm thunderstorm light rainpart cloudrain showerspart cloudpart cloudpart cloudpart cloudthunderstorm thunderstorm part cloudthunderstorm thunderstorm rain showersthunderstorm
Rain (mm)
--51111193788111174917362674-3----44-89111
Temp. °C273029272929262726252624242425242626252625252425252828262928262928262928
Feels °C (?)303533313334283230293027272828273030282927282729293231293332303332293332

Short Range Forecast: Heavy rain (total 47mm), heaviest during Sat afternoon. Warm (max 30°C on Fri morning, min 25°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 66mm), heaviest during Mon afternoon. Warm (max 26°C on Mon morning, min 24°C on Sun night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 85mm), heaviest during Thu night. Warm (max 28°C on Sat morning, min 23°C on Thu night). Wind will be generally light.

Long Range Forecast: Heavy rain (total 42mm), heaviest during Mon night. Warm (max 29°C on Sun morning, min 25°C on Sat night). Wind will be generally light.

  • 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)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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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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