Guiones Surf Forecast

/ Guanacaste (28 surf breaks) /

Costa Rica (96 surf breaks) / Lat Long: (9.93° N 85.67° W)

Surf Forecasts:

Guiones surfForecast / Guanacaste / Costa Rica

12 Day Weather and Surf, issued 5 am Thursday 04 Sep 2025 CST

Forecast update in hr min s Forecast update imminent

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

Today's Guiones sea temperature is 28.7° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Guiones this week:

The surf forecast for Guiones over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 05) at 3AM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.1m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Guiones in the next 12 days are 1.3m 16s and forecast to arrive on Wednesday (Sep 10) at 6AM. Winds are predicted to be glassy at the time the swell arrives.

Wave Type	Time (CST) & Date	Wave Height & Period
Next good surf (1 star+)	3AM (Fri 5th Sep)	3.5ft (1.1m) 15s
Best Surf	6AM (Wed 10th Sep)	4.5ft (1.3m) 16s
Most Powerful	6AM (Wed 10th Sep)	4.5ft (1.3m) 16s

Table - best surf conditions forecast for Guiones over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Heavy rain (total 46mm), heaviest during Thu night. Warm (max 28°C on Thu morning, min 24°C on Thu night). Wind will be generally light.									Days 3-6 Weather Summary Heavy rain (total 36mm), heaviest during Sun night. Warm (max 27°C on Sun morning, min 24°C on Sun night). Wind will be generally light.
	Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	2	1	1	3	2	3	2	2	2	2	1	1	2	1	3	2	2	3	3	1	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	15	14	15	15	15	17	15	16	15	15	14	14	13	14	15	18	18	16	16	16	14
Wave Graph (?)
Energy (?)	800	688	828	682	751	691	504	540	414	424	332	410	306	416	595	873	816	909	879	727	772
Wind (km/h)	NNW	SW	SSE	WNW	WNW	S	NW	WNW	E	ESE	SSE	ESE	ESE	SSE	SE	SSE	SW	E	WNW	WSW	WNW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	on	cross	glass	cross- on	glass	cross	cross- on	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross- off	cross	cross- on	glass	glass	on	cross- on
High Tide / height (m)	11:48AM 1.79		12:32AM 1.70		12:44PM 1.90	1:20AM 1.88		1:32PM 2.02	2:02AM 2.07		2:17PM 2.13	2:43AM 2.25		3:00PM 2.22		3:23AM 2.39	3:43PM 2.27		4:05AM 2.48	4:27PM 2.28
Low Tide / height (m)			6:18PM 0.58	6:31AM 0.66		7:05PM 0.46	7:22AM 0.51		7:47PM 0.33	8:09AM 0.36		8:28PM 0.21	8:53AM 0.21		9:08PM 0.12	9:37AM 0.10		9:49PM 0.06	10:21AM 0.03		10:31PM 0.05

	Thursday 04			Friday 05			Saturday 06			Sunday 07			Monday 08			Tuesday 09			Wednesday 10
Sunrise	5:33	-	-	5:33	-	-	5:33	-	-	5:33	-	-	5:33	-	-	5:31	-	-	5:31	-	-
Sunset	-	5:50	-	-	5:49	-	-	5:47	-	-	5:47	-	-	5:46	-	-	5:46	-	-	5:45	-

Rain (mm)	-	3	18	2	6	3	1	8	5	4	5	13	2	3	5	1	3	-	3	2	3
Temp. °C	28	28	26	27	27	26	28	27	26	27	27	25	26	26	25	26	25	25	27	27	26
Feels °C (?)	31	31	30	30	31	30	31	30	30	29	29	27	29	29	28	30	28	29	32	30	30

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Guanacaste

Wind Update Continuing clean conditions at Guiones (light winds from the SSE at Liberia/Tomas Guardia Airport 75 km from Guiones). 1.0m 9s swell from the SSW with a 0.9m 14s groundswell from the SW and a 0.5m 17s long period groundswell, also from the SW. 3 swells combining to make bigger set waves.
1 hour 42 minutes ago Guiones

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Guiones surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

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 12 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.