Las Avellanas Surf Break

Las Avellanas Surf Forecast and Surf Report

Lat Long: 10.24° N 85.85° W

Issued: 5 am 13 Jun 2026 (local time)

Forecast update in  hr  min

Today's Las Avellanas sea temperature is
29.5° C

Slightly warmer than usual

Las Avellanas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (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 Forecast

Moderate 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 Summary

Heavy 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
Rating
(10 max)
2
2
2
1
2
2
3
2
4
3
2
4
2
1
3
3
1
3
3
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
16
1.1
SW
15
0.9
SSW
15
0.9
SSW
14
0.9
SW
14
0.8
SW
15
0.6
SW
24
0.7
SW
14
1.1
SW
21
0.9
SW
21
1.2
SW
19
1.2
SW
19
1
SW
18
1.1
SW
18
1.1
SW
18
0.9
SW
16
0.9
SW
16
1.1
SW
16
1
SW
16
1.1
SW
17
1.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
573
544
377
362
301
276
347
214
1005
742
1070
1059
623
686
769
454
432
643
504
751
744
Wind (km/h)
15
ENE
10
W
15
ENE
20
ENE
10
S
15
SE
5
NE
0
NW
0
N
5
ENE
15
WSW
5
SSE
10
W
10
W
5
SSE
5
N
10
W
5
ESE
10
E
10
S
5
ESE
Wind State
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
part cloud
part cloud
clear
clear
thunderstorm
thunderstorm
part cloud
mod rain
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
part cloud
thunderstorm
rain showers
rain showers
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:22
5:22
5:22
5:22
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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)
1.1
SW
16
1.1
SW
15
0.9
SSW
15
0.9
SSW
14
0.9
SW
14
0.8
SW
15
0.9
SW
15
0.9
S
6
1.1
SW
21
0.9
SW
21
1.2
SW
19
1.2
SW
19
1
SW
18
1.1
SW
18
1.1
SW
18
0.9
SW
16
0.9
SW
16
1.1
SW
16
1
SW
16
1.1
SW
17
1.3
SW
15
Energy kJ
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)
0.4
S
8
0.4
S
8
0.5
S
8
0.5
S
8
0.5
S
16
0.6
SSW
15
0.7
S
6
0.7
SW
14
0.8
SW
14
0.8
S
7
0.8
SSW
13
0.6
SW
12
0.8
SSW
12
0.7
SSW
12
0.8
SSW
13
0.8
SW
6
0.8
SW
6
0.8
SSW
13
0.7
S
12
0.6
SSW
12
0.7
SSW
11
Energy kJ
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)
0.2
W
7
0.2
SSW
20
0.4
SSW
18
0.4
SSW
17
0.5
S
8
0.5
S
8
0.6
SW
24
0.5
S
14
0.5
S
13
0.7
SW
13
0.7
S
7
0.6
S
7
0.6
S
7
0.6
S
6
0.5
SSW
6
0.5
S
15
0.8
SSW
14
0.6
SW
6
0.6
SW
6
0.5
SW
6
0.3
S
12
Energy kJ
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)
0.4
NNE
5
0.4
NNW
4
0.4
NNE
4
0.4
NNE
4
0.3
SSE
3
0.9
S
6
Energy kJ
7
5
5
5
2
61
Nearest Offshore or Glassy
Rating
(10 max)
3
3
2
2
2
2
3
2
4
3
4
4
3
3
3
3
3
3
3
3
3
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
Rating
(10 max)
3
3
3
2
3
3
3
2
4
3
4
4
3
3
4
3
3
3
3
3
3
Best forecast wave conditions in Costa Rica
Rating
(10 max)
3
3
3
3
3
3
3
2
4
3
4
4
3
3
4
3
3
3
3
3
3
Header Global
Rating
(10 max)
5
5
5
5
4
5
5
4
5
4
5
4
8
4
8
9
9
9
6
5
5
  • 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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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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