Guiones Surf Break

Lat Long: 9.93° N 85.67° W

Guiones Surf Forecast and Surf Report

Issued: 11 pm 08 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 9 Jul 2026:

  • Best quality surf: Thursday 9 Jul, 9AM (local time) - 3.5ft (1.1m), 15s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 9 Jul, 9AM (local time) - 3.5ft (1.1m), 15s period, SW swell with 544 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 9AM (local time) - 3.5ft (1.1m), 15s 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 09) at 9AM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 0.7m and 9s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Guiones in the next 16 days are 1.1m 15s and forecast to arrive on Thursday (Jul 09) 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 5s period and expected on Monday (Jul 13) at 6AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 9th Jul)3.5ft (1.1m) 15s
Best Surf 9AM (Thu 9th Jul)3.5ft (1.1m) 15s
Most Powerful 9AM (Thu 9th Jul)3.5ft (1.1m) 15s

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


Alright folks, Rusty here. Let’s have a look at what’s cookin’ for the next 16 days at Guiones. We’ve got a solid run of small, clean surf rolling through, nothing too crazy, but plenty of fun waves for the beginner to intermediate crew. The standout is a sweet glassy window on the morning of July 11th, and a sneaky good pulse on the morning of July 24th.

The water temp is about average for this time of year, so no shocks there. Just your usual tropical bath.

We start with Thursday morning, July 9th. It’s clean, with a 4 ft swell from the SW and a very long period of 15 seconds. That’s proper groundswell energy, and the combined energy is moderate (629). The wind is light and offshore from the ENE, so expect clean, glassy lines. This is a highlight for sure. The afternoon gets a bit messy with a cross-onshore breeze and a risk of storms, so get out early.

Friday the 10th is another clean morning, with a 3 ft SW swell, still that long 15-second period. Wind is cross-offshore from the NE, so the waves will have a bit of shape. The afternoon sees the same cross-onshore wind and storm risk, so mornings are your friend.

Now, Saturday morning, July 11th, is a beauty. The swell drops a touch to 3 ft from the SW with a 14-second period, but the wind is glassy – dead calm. The combined energy is moderate (607). This is the best of the first week. Expect clean, peeling waves, perfect for the longboard or a funboard. The afternoon turns cross-shore and a bit messy.

Sunday morning, July 12th, is still glassy, with 3 ft SW swell, but the energy drops a bit (466). It’s still good, but the afternoon turns into a washout with a 9 mph cross-onshore wind and poor conditions.

Monday the 13th through to Wednesday the 15th keep the trend: small 2 ft to 3 ft SW swell, with clean mornings and glassy or offshore winds. The energy sits in the moderate range (335 to 522). The Wednesday afternoon of the 15th is a nice little pick-up, with a 3 ft SW swell, 15-second period, and clean cross-offshore wind. The combined energy hits 522. Worth a paddle.

Thursday the 16th morning is clean again with a 2 ft S swell, but the afternoon gets a bit of a bump to 4 ft from the SSW, though the period drops to 12 seconds and the wind goes cross-shore. It’s a bit jumbled.

Friday the 17th and Saturday the 18th are clean in the mornings, with offshore winds and 3 ft to 3 ft SSW swell. Good, consistent little waves. The energy is moderate (292 to 473). Sunday the 19th morning is clean, but the afternoon gets slammed by a cross-onshore wind, so bail out early.

The second week, from Monday the 20th to Thursday the 23rd, continues the pattern: small 2 ft to 3 ft SW swell, mostly clean mornings with offshore or glassy winds. Crowds are often at Guiones, so expect company, but the waves are consistent and forgiving.

Then, the final standout: Friday morning, July 24th. The swell bumps up to 4 ft from the S, with a 12-second period. The wind is glassy, dead calm. The combined energy is strong (602). This is the best of the whole run for the second week. It’s a bit of a wait, but the promise is real. Get excited for that morning.

The gaps between good surf are just the afternoons, really. Every morning has something rideable. No big dry spells.

Rusty.

Short Range Forecast

Heavy rain (total 43mm), heaviest during Fri night. Warm (max 31°C on Fri morning, min 26°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 26mm), heaviest during Tue afternoon. Warm (max 29°C on Mon morning, min 25°C on Sat night). Wind will be generally light.

Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wed
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
3
3
2
2
2
2
3
3
2
2
2
0
1
2
1
2
2
2
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SSW
16
1.1
SW
15
0.9
SSW
15
0.9
SSW
15
0.9
SW
15
0.9
SW
15
0.9
SW
15
0.9
SW
14
0.9
SSW
14
0.9
SSW
14
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
0.8
SW
15
Wave Graph
Metric surfscale
Energy kJ
657
544
393
382
318
318
335
305
362
328
301
268
132
197
183
184
206
207
197
181
269
Wind (km/h)
5
NE
5
ENE
10
SSW
10
NE
10
NE
10
SSW
10
SE
5
ENE
5
NW
10
SE
0
WNW
15
WNW
10
N
5
NNE
10
SW
5
ENE
10
NE
5
ESE
10
ENE
5
ENE
10
SE
Wind State
cross-off
off
cross-on
off
cross-off
cross-on
cross-off
glassy
cross
cross-off
glassy
cross-on
cross-off
glassy
cross-on
off
off
cross-off
off
off
cross-off
High Tide
9:08AM2.06m
9:41PM1.73m
10:09AM2.08m
10:49PM1.75m
11:14AM2.13m
11:57PM1.82m
12:19PM2.20m
1:02AM1.94m
1:21PM2.28m
2:01AM2.07m
2:18PM2.35m
2:57AM2.20m
3:12PM2.38m
Low Tide
2:41AM0.51m
3:39PM0.49m
3:42AM0.52m
4:44PM0.43m
4:49AM0.49m
5:49PM0.34m
5:57AM0.43m
6:51PM0.23m
7:02AM0.34m
7:49PM0.12m
8:03AM0.25m
8:43PM0.02m
9:00AM0.18m
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
light rain
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:26
5:26
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
2
2
1
2
25
3
8
6
2
4
5
1
2
1
5
5
3
10
Temp °C
28
30
30
28
31
30
28
27
27
26
28
26
26
29
29
26
29
29
26
28
27
Feels °C
33
33
34
33
35
34
32
32
31
30
32
29
29
33
32
30
33
33
29
31
30
  • 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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