Las Avellanas Surf Break

Las Avellanas Surf Forecast and Surf Report

Lat Long: 10.24° N 85.85° W

Issued: 11 am 10 Jun 2026 (local time)

Forecast update in  hr  min

Today's Las Avellanas sea temperature is
30.1° C

1.4°C warmer than normal for this time of year

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 10 Jun 2026:

  • Best quality surf: Monday 15 Jun, 9PM (local time) - 3.5ft (1.1m), 21s period, SW swell with offshore 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★+): Wednesday 10 Jun, 9PM (local time) - 4ft (1.2m), 14s period with SSW 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 Wednesday (Jun 10) at 9PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 1.2m and 9s. The wind is predicted to be glassy 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 0.7m 7s period and expected on Monday (Jun 15) at 12AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 10th Jun)4ft (1.2m) 14s
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

Mostly dry. Warm (max 29°C on Wed morning, min 25°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 22mm), heaviest during Sun afternoon. Warm (max 31°C on Sat morning, min 26°C on Sat night). Wind will be generally light.

Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
3
2
0
2
2
1
1
3
1
2
2
1
3
3
0
4
3
2
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SSW
16
1.3
SSW
16
1
SSW
14
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.9
SSW
13
0.8
SSW
17
0.8
SSW
16
1.1
SW
16
1.1
SW
15
0.9
SSW
15
0.9
SSW
14
0.9
SW
14
0.9
SW
15
0.6
SW
24
0.8
SW
14
1.1
SW
21
0.9
SW
21
1.2
SW
19
1.2
SW
19
Wave Graph
Metric surfscale
Energy kJ
909
848
425
362
362
246
277
368
334
573
544
377
362
301
340
347
251
1005
742
1070
1059
Wind (km/h)
0
WSW
10
W
0
SE
5
E
10
W
10
NNW
15
NNW
15
NW
20
NNW
10
ENE
10
WSW
5
E
10
E
10
SW
10
SE
5
SSE
15
S
5
ENE
5
E
10
SW
0
N
Wind State
glassy
on
glassy
glassy
on
cross
cross
cross-on
cross
cross-off
cross-on
off
off
cross-on
cross-off
glassy
cross
off
glassy
cross-on
glassy
High Tide
9:47AM2.20m
10:16PM1.90m
10:44AM2.29m
11:19PM1.96m
11:42AM2.40m
00:20AM2.06m
12:39PM2.51m
1:18AM2.17m
1:36PM2.61m
2:14AM2.29m
2:31PM2.67m
3:08AM2.40m
3:24PM2.69m
Low Tide
4:15PM0.60m
4:17AM0.59m
5:16PM0.48m
5:18AM0.52m
6:14PM0.33m
6:18AM0.42m
7:10PM0.19m
7:17AM0.31m
8:04PM0.07m
8:14AM0.22m
8:57PM-0.02m
9:10AM0.16m
9:48PM-0.06m
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:20
5:20
5:22
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:04
6:04
6:04
6:05
6:05
6:05
 mm
1
3
1
5
4
2
5
1
1
2
1
Temp °C
29
29
27
29
29
27
29
29
28
31
30
28
31
30
28
30
29
27
29
29
28
Feels °C
32
32
31
32
31
30
31
31
31
35
33
32
35
34
32
33
31
31
32
32
33
Swell 1
Height (m)
Direction
Period (s)
1.4
SSW
16
1.3
SSW
16
1.1
W
9
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.9
SSW
13
0.8
SSW
17
0.8
SSW
16
1.1
SW
16
1.1
SW
15
0.9
SSW
15
0.9
SSW
14
0.9
SW
14
0.9
SW
15
0.9
SW
15
0.8
SW
14
1.1
SW
21
0.9
SW
21
1.2
SW
19
1.2
SW
19
Energy kJ
909
848
190
362
362
246
277
368
334
573
544
377
362
301
340
309
251
1005
742
1070
1059
Swell 2
Height (m)
Direction
Period (s)
1.1
W
9
1.1
W
9
1
SSW
14
0.9
WNW
8
0.8
WNW
8
0.6
WNW
7
0.6
SSW
18
0.7
SW
13
0.8
SSW
13
0.4
WNW
7
0.4
WNW
7
0.5
S
8
0.5
S
8
0.5
S
16
0.6
SSW
15
0.6
S
7
0.6
S
14
0.8
SW
14
0.8
SW
13
0.9
SW
13
0.6
SW
12
Energy kJ
184
194
425
112
81
43
209
178
195
15
17
29
29
132
172
39
140
218
208
245
116
Swell 3
Height (m)
Direction
Period (s)
0.3
S
8
0.4
S
7
0.3
S
7
0.3
S
7
0.6
SSW
18
0.5
WNW
7
0.4
S
7
0.7
WNW
4
0.4
SSW
8
0.5
S
8
0.4
SSW
18
0.4
SSW
17
0.5
S
7
0.4
SW
22
0.6
SW
24
0.6
S
7
0.5
SSW
13
0.4
S
7
0.4
S
7
0.5
S
7
Energy kJ
10
17
9
9
218
26
15
14
19
29
106
95
28
123
347
39
102
15
15
23
Wind waves
Height (m)
Direction
Period (s)
0.5
WNW
7
0.7
S
7
Energy kJ
26
54
Nearest Offshore or Glassy
Rating
(10 max)
4
4
3
2
2
3
3
3
3
3
3
2
2
2
3
3
2
4
3
4
4
Distance (km)
0
1
0
0
1
1
1
1
61
0
1
0
0
1
0
0
25
0
0
1
0
Best forecast wave conditions in Guanacaste
Rating
(10 max)
4
4
3
2
2
3
3
3
3
3
3
3
2
2
3
3
2
4
3
4
4
Best forecast wave conditions in Costa Rica
Rating
(10 max)
4
4
3
3
2
3
3
3
3
3
3
3
2
3
3
3
2
4
3
4
4
Header Global
Rating
(10 max)
8
5
7
6
6
8
7
5
5
5
5
5
9
5
5
5
5
5
7
8
8
  • 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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