Guiones Surf Break

Lat Long: 9.93° N 85.67° W

Guiones Surf Forecast and Surf Report

Issued: 11 pm 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Guiones sea temperature is
30.4°C
2.6° 

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


Guiones surf forecast from 20 Sep 2026:

  • Best quality surf: Sunday 20 Sep, 6AM (local time) - 2.5ft (0.8m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 21 Sep, 9AM (local time) - 3.5ft (1.1m), 18s period, SW swell with 679 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 6AM (local time) - 2.5ft (0.8m), 19s period with SW swell.

Best Forecast Surf Conditions for Guiones this week:

The surf forecast for Guiones over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 6AM. The primary swell is predicted to be 0.8m and 19s period with a secondary swell of 0.7m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Guiones in the next 16 days are 1.1m 18s and forecast to arrive on Monday (Sep 21) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 20th Sep)2.5ft (0.8m) 19s
Best Surf 6AM (Sun 20th Sep)2.5ft (0.8m) 19s
Most Powerful 9AM (Mon 21st Sep)3.5ft (1.1m) 18s

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


Short Range Forecast

Heavy rain (total 102mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 25°C on Sat night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Tue afternoon).

Days 5-7 Weather Summary

Heavy rain (total 34mm), heaviest during Tue night. Warm (max 29°C on Wed morning, min 25°C on Tue night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
2
3
3
3
2
3
1
2
3
1
2
2
1
2
2
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SW
18
0.9
SW
19
0.9
SW
19
0.9
SW
18
1.1
SW
18
1
SW
17
0.9
SW
16
1
SW
16
0.9
SW
16
1
SW
16
0.8
SW
16
0.8
SW
15
0.8
SW
15
0.8
SW
14
0.8
SW
14
0.8
SW
13
0.7
SW
13
0.8
SW
13
0.9
SW
14
Wave Graph
Metric surfscale
Energy kJ
325
614
614
516
679
582
443
498
421
480
339
309
301
293
277
215
171
212
341
Wind (km/h)
20
ENE
5
N
5
W
10
E
10
SE
15
SE
15
SE
15
ESE
25
S
5
SSE
10
SE
15
S
10
SE
5
SE
10
S
5
ENE
10
SE
15
SSE
10
E
Wind State
off
glassy
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-on
off
cross-off
cross
cross-off
High Tide
8:58AM1.69m
9:49PM1.53m
10:09AM1.66m
11:02PM1.57m
11:18AM1.69m
00:02AM1.68m
12:15PM1.77m
00:49AM1.82m
1:03PM1.87m
1:29AM1.98m
1:46PM1.97m
2:06AM2.13m
Low Tide
2:38AM0.78m
3:34PM0.71m
3:51AM0.83m
4:44PM0.71m
5:05AM0.80m
5:45PM0.65m
6:07AM0.72m
6:33PM0.57m
6:57AM0.59m
7:15PM0.47m
7:39AM0.46m
7:52PM0.38m
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:31
5:31
5:31
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:39
5:38
5:37
5:37
5:37
5:37
 mm
61
1
10
11
4
5
4
6
9
4
5
3
2
6
5
6
Temp °C
28
29
29
27
27
26
26
27
27
26
29
29
27
28
28
27
28
28
27
Feels °C
32
32
34
30
30
29
29
29
28
29
32
32
30
32
31
31
31
31
31
  • 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 Guiones Surf forecast

The above surf forecast table for Guiones provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Guiones can be found by selecting the local surf guide option on the grey menu. Our Guiones 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 (Guiones) 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 Guiones 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.

Guiones is 34 km (21 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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