Guiones Surf Break

Lat Long: 9.93° N 85.67° W

Guiones Surf Forecast and Surf Report

Issued: 5 am 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Guiones sea temperature is
29.7° C
1.7° 

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


Guiones surf forecast from 30 Jul 2026:

  • Best quality surf: Thursday 30 Jul, 9PM (local time) - 4ft (1.2m), 14s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 30 Jul, 3PM (local time) - 4ft (1.2m), 14s period, SW swell with 589 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 9PM (local time) - 4ft (1.2m), 14s 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 Thursday (Jul 30) at 9PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.2m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Guiones in the next 16 days are 1.2m 14s and forecast to arrive on Thursday (Jul 30) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 5s period and expected on Sunday (Aug 02) at 12AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 30th Jul)4ft (1.2m) 14s
Best Surf 9PM (Thu 30th Jul)4ft (1.2m) 14s
Most Powerful 3PM (Thu 30th Jul)4ft (1.2m) 14s

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


The Lowdown

Alright, folks, let’s talk about Guiones. The water’s a balmy 86°, a touch warmer than usual for this time of year – feels like a tropical bath.

The surf starts proper on Thursday morning, July 30th. It’s clear, with a light offshore breeze from the NE and a 4ft SW swell rolling in at a long 14 seconds. That’s a quality groundswell with a solid moderate energy level (694). It’s a standout for the week. The wind is offshore and it’s clean, so you’ll be looking at lined-up waves peeling off the bank. This is the best wave of the near-term, no question. The afternoon sees the wind swing around to the south, getting cross-on, and the quality drops off fast.

Friday morning, July 31st, is another clean start with a lighter 3ft SW swell, still that long 14-second period. The offshore breeze is lighter, but the surf is still good. It’s a good session for a beginner board, but the real power is missing. The afternoons remain a write-off with cross-on wind.

Saturday and Sunday mornings, August 1st and 2nd, are clean and glassy – the Sunday morning is absolutely glassy, with a tiny 2ft SW swell but a very long 15-second period. That’s a proper groundswell, and it’ll be clean as a whistle, but the size is small. It’s a longboard special.

The real standout for the entire outlook is shaping up for the second week. Look at Saturday morning, August 8th – a 3ft SSW swell, period of 16 seconds, and a clean offshore wind from the NE. The energy is strong (633). That’s a pure, clean line-up. Then, Wednesday morning, August 12th, is a cracker: 3ft SW swell, 18-second period, and a light offshore breeze. The energy is high (580). That’s a long-period groundswell that will wrap beautifully into the point. It’s the pick of the whole run.

There’s a long gap of very ordinary afternoons and some smaller days in between, but don’t let that fool you. The mornings are where it’s at. The 12th and 13th August mornings are both very good, with the 13th showing a 3ft SW swell, 16-second period, and clean conditions. The 14th August morning is also very good with a 3ft SW swell and 15-second period.

Crowds are listed as “often” at Guiones, so expect company, especially on those clean morning windows. It’s a consistent, exposed beginner-to-intermediate spot, so it’s a popular choice. The wave quality will be worth the line-up.

There’s a big gap in the middle of the second week where the wind turns onshore and the quality plummets, but the mornings are the clear winners. This is a classic case of the morning being the only show in town.

Alright, that’s the story. Get on it, but get up early.

Rusty.

Short Range Forecast

Light rain (total 9mm), mostly falling on Fri night. Warm (max 31°C on Thu morning, min 26°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 22mm), heaviest during Sun night. Warm (max 29°C on Mon morning, min 26°C on Sun night). Wind will be generally light.

Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
3
2
0
2
2
1
2
2
1
2
2
0
2
0
1
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
14
1.2
SW
14
1.1
SW
14
1
SW
14
1
SW
13
0.9
SSW
13
0.9
SW
13
0.9
SW
13
0.7
SW
12
0.6
SW
15
0.7
SW
15
0.6
SW
14
0.9
SW
13
0.8
SW
13
0.6
SSW
13
0.9
SSW
8
0.8
SSW
8
0.8
SSW
8
0.8
SSW
8
0.7
S
8
0.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
667
589
485
357
342
290
238
234
147
137
209
167
299
208
111
112
94
87
85
63
73
Wind (km/h)
10
NE
10
S
10
NE
5
NE
10
S
10
NE
10
NE
10
S
10
ENE
0
ENE
15
S
0
ESE
0
ESE
10
SW
0
SW
10
NNW
10
WSW
5
SSE
5
ENE
10
SW
10
E
Wind State
off
cross-on
off
off
cross-on
cross-off
off
cross
off
glassy
cross
glassy
glassy
on
glassy
cross
on
glassy
off
on
cross-off
High Tide
3:20PM2.07m
3:51AM2.03m
3:57PM2.09m
4:26AM2.10m
4:34PM2.08m
5:01AM2.14m
5:11PM2.05m
5:36AM2.16m
5:49PM2.00m
6:13AM2.16m
6:30PM1.93m
6:55AM2.14m
7:16PM1.85m
Low Tide
9:13AM0.47m
9:37PM0.28m
9:52AM0.43m
10:11PM0.26m
10:30AM0.40m
10:45PM0.26m
11:08AM0.38m
11:19PM0.28m
11:47AM0.38m
11:54PM0.32m
12:29PM0.39m
00:34AM0.37m
1:15PM0.41m
1:19AM0.42m
clear
clear
clear
clear
part cloud
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
<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
5:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:05
6:05
6:05
6:05
6:04
6:04
 mm
5
2
2
1
4
2
3
2
3
7
4
2
Temp °C
31
31
28
30
30
28
31
29
27
28
28
27
29
29
27
29
29
28
29
29
27
Feels °C
33
33
31
32
33
32
34
33
30
32
31
31
33
32
32
33
33
32
31
33
31
  • 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)
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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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