Guiones Surf Break

Lat Long: 9.93° N 85.67° W

Guiones Surf Forecast and Surf Report

Issued: 5 am 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Guiones sea temperature is
30.1° C
1.8° 

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


Guiones surf forecast from 12 Jul 2026:

  • Best quality surf: Tuesday 14 Jul, 9PM (local time) - 2ft (0.6m), 18s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 19 Jul, 9AM (local time) - 3.5ft (1.0m), 14s period, S swell with 372 kJ wave energy.
  • Next surfable swell (1★+): Sunday 12 Jul, 9PM (local time) - 2ft (0.6m), 12s period with SSW 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 (Jul 12) at 9PM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.8m and 7s. Another secondary swell of 0.6m and 12s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Guiones in the next 16 days are 1.0m 14s and forecast to arrive on Sunday (Jul 19) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 6s period and expected on Monday (Jul 13) at 3AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 12th Jul)2ft (0.6m) 12s
Best Surf 9PM (Tue 14th Jul)2ft (0.6m) 18s
Most Powerful 9AM (Sun 19th Jul)3.5ft (1.0m) 14s

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


Alright folks, Rusty here. Let’s have a look at what’s coming our way for the next couple of weeks. We’ve got a stretch of surf coming, but you gotta be patient. The early part of the week is pretty quiet, but things start to build and then really get going towards the end of the run.

For the first few days, starting Sunday July 12th, it’s a bit of a write-off. We’ve got some small swell around 3ft from the SW, but the wind is all wrong with a cross-onshore breeze. The water temp is about average for this time of year, nothing crazy. Monday the 13th sees things clean up nicely though. A light offshores in the morning and the swell, while small at 2ft from the SW, has decent period. It’s clean and the energy is moderate (362). Tuesday looks similar – offshore winds and clean surf, with the swell a touch bigger at 2ft. Wednesday and Thursday keep that same theme: small, clean, and on the glassy side. This is great for the beginners out there, but don’t expect any power. Through this whole first week the combined energy stays in the moderate range – think 300s to 500s.

Now, the weekend of July 18th and 19th starts to look more interesting. Saturday morning the 18th, we’ve got a clean 3ft swell with a 12-second period and the combined energy ramping up to 515. That’s a solid looking wave for Guiones. The wind is offshore from the ENE. Sunday the 19th is another standout morning – glassy, offshore, with 3ft of swell from the S. The sets are starting to have a bit more push to them.

But here’s where it gets exciting. The real fireworks are in the last few days. On Saturday July 25th, we’re looking at a proper groundswell event. The swell is from the SW with a very long period of 21 seconds and an energy reading of 1173 – that’s strong energy, no doubt. The height is 3ft, but with that kind of period, you’re going to get some long, clean lines and big gaps between sets. The wind is offshore in the morning, so it’ll be clean. This is the kind of day for the experienced crew – don’t take a foamie out for this one. Then Sunday July 26th is even bigger. We’re seeing 4ft swell from the SW, again with a long 19-second period. The energy readings just keep climbing, hitting 1478 in the morning. The wind is offshore and clean. Monday the 27th looks like the peak with 4ft swell and energy at 1487.

The standout is the period from Saturday the 25th through Monday the 27th. The quality of the swell combined with those perfect offshore winds is the best on offer. This is not for beginners; the long period and solid size mean it’s a proper groundswell that will wrap in nicely, but it needs a reef or point to really shine. Expect crowds at Guiones, it’s a popular spot and for good reason.

So the first week is small and clean for the learners, but the second week is where the real juice is. Get your board ready for that last weekend.

Rusty.

Short Range Forecast

Moderate rain (total 19mm), heaviest on Mon night. Warm (max 29°C on Sun morning, min 24°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 6mm), mostly falling on Thu afternoon. Warm (max 29°C on Wed morning, min 25°C on Wed night). Wind will be generally light.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
2
2
2
2
2
1
2
2
1
2
2
1
2
2
2
2
2
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
14
0.9
SW
14
0.6
SW
13
0.7
SW
14
0.7
SW
13
0.5
SW
19
0.7
S
14
0.7
SSW
14
0.6
SW
18
0.7
SSW
13
0.6
SW
16
0.6
SW
16
0.6
SSW
13
1
SSW
13
0.8
S
14
0.9
SSW
14
0.9
SSW
13
0.8
SSW
13
0.8
SSW
12
0.8
SSW
12
0.9
SSW
13
Wave Graph
Metric surfscale
Energy kJ
301
268
132
194
183
184
206
207
197
181
201
161
137
326
261
356
312
229
164
164
282
Wind (km/h)
10
NW
15
WNW
10
NE
5
ENE
5
W
10
ESE
5
NE
5
WNW
10
NE
10
ENE
5
SW
5
NNE
5
ESE
5
WSW
10
NE
5
NE
5
SSW
10
NE
5
NE
10
SW
5
NE
Wind State
cross
cross-on
off
glassy
glassy
cross-off
glassy
cross-on
cross-off
off
on
glassy
glassy
on
off
cross-off
glassy
cross-off
cross-off
on
cross-off
High Tide
12:19PM2.20m
1:02AM1.94m
1:21PM2.28m
2:01AM2.07m
2:18PM2.35m
2:57AM2.20m
3:12PM2.38m
3:49AM2.30m
4:04PM2.38m
4:39AM2.36m
4:54PM2.32m
5:27AM2.36m
5:42PM2.22m
Low Tide
6:51PM0.23m
7:02AM0.34m
7:49PM0.12m
8:03AM0.25m
8:43PM0.02m
9:00AM0.18m
9:33PM-0.03m
9:55AM0.14m
10:22PM-0.04m
10:47AM0.15m
11:09PM0.01m
11:38AM0.20m
11:55PM0.10m
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<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
5:28
5:28
5:28
5:28
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:07
6:07
6:07
6:07
6:07
6:07
 mm
1
1
2
14
1
1
3
1
1
4
4
Temp °C
29
29
27
28
29
26
26
27
26
29
28
27
28
29
27
29
29
27
30
29
27
Feels °C
32
32
31
32
34
30
30
31
28
33
32
32
32
33
31
33
33
31
34
33
32
  • 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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