Rio Tulin Surf Forecast

/ Golfo de Nicoya (40 surf breaks) /

Costa Rica (96 surf breaks)

Surf Forecasts:

Rio Tulin surfForecast / Golfo de Nicoya / Costa Rica

12 Day Weather and Surf, issued 5 am Thursday 18 Sep 2025 CST

Forecast update in hr min s Forecast update imminent

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

Today's Rio Tulin sea temperature is 29.0° C
(Which is 1.0°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Rio Tulin this week:

The surf forecast for Rio Tulin over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 9AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.9m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Rio Tulin in the next 12 days are 1.1m 14s and forecast to arrive on Thursday (Sep 18) at 9AM. 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+)	9AM (Thu 18th Sep)	3.5ft (1.1m) 14s
Best Surf	9AM (Thu 18th Sep)	3.5ft (1.1m) 14s
Most Powerful	9AM (Thu 18th Sep)	3.5ft (1.1m) 14s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Moderate rain (total 17mm), heaviest on Thu morning. Warm (max 28°C on Sat afternoon, min 24°C on Thu morning). Wind will be generally light.									Days 3-6 Weather Summary Heavy rain (total 27mm), heaviest during Mon night. Warm (max 28°C on Sun morning, min 25°C on Mon night). Wind will be generally light.
	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	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	1	1	2	0	1	2	0	1	1	0	1	1	1	2	2	0	3	2	1	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SSW	SSW	SW	SW	SSW	SW	SSW	SSW	SW
Period(s) (?)	14	14	13	13	13	13	12	12	12	12	12	13	13	13	18	16	12	16	12	12	14
Wave Graph (?)
kJ (?)	501	413	313	273	269	202	210	210	129	93	90	88	118	149	152	169	94	299	199	206	248
Wind (km/h)	S	W	WNW	NNE	SW	NW	S	SW	W	S	WSW	WNW	W	SW	ESE	SW	SW	WNW	N	S	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	cross- on	cross	glass	on	cross	glass	on	glass	glass	on	glass	glass	on	glass	glass	on	glass	glass	cross- on	glass
High Tide / height (m)		12:07PM 2.31	12:47AM 2.34		1:05PM 2.40	1:37AM 2.48		1:54PM 2.48	2:18AM 2.60		2:36PM 2.55	2:55AM 2.69		3:14PM 2.59		3:30AM 2.74	3:49PM 2.60		4:03AM 2.74	4:24PM 2.56
Low Tide / height (m)			6:28PM 0.55	6:55AM 0.62		7:20PM 0.46	7:46AM 0.50		8:04PM 0.39	8:29AM 0.39		8:42PM 0.34	9:07AM 0.31		9:18PM 0.31	9:43AM 0.26		9:53PM 0.32	10:18AM 0.25		10:27PM 0.36

	Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	5:26	-	-	5:26	-	-	5:26	-	-	5:26	-	-	5:26	-	-	5:26	-	-	5:26	-	-
Sunset	-	5:36	-	-	5:36	-	-	5:35	-	-	5:35	-	-	5:34	-	-	5:32	-	-	5:32	-

Rain (mm)	6	3	1	-	-	1	-	2	4	1	1	3	2	3	11	1	2	3	-	2	2
Temp. °C	25	25	25	27	27	26	27	28	27	28	27	27	27	27	26	27	27	27	27	28	27
Feels °C (?)	27	28	29	31	30	30	32	31	32	32	30	31	32	30	31	31	30	31	32	32	33

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 Golfo de Nicoya

Wind Update Continuing clean conditions at Rio Tulin (light winds from the E at Juan Santamaria Airport 63 km from Rio Tulin). 0.9m 14s groundswell from the SSW with a 0.6m 7s swell from the S and a 0.6m 6s windswell from the SW. 3 swells combining to make bigger set waves.
2 hours 3 minutes ago Rio Tulin

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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 Rio Tulin 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 Rio Tulin Surf forecast

The above surf forecast table for Rio Tulin provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Rio Tulin can be found by selecting the local surf guide option on the grey menu. Our Rio Tulin 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 (Rio Tulin) 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 Rio Tulin 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.

Are you planning a holiday in Golfo de Nicoya? If you are looking for accommodation near Rio Tulin, camping, hotels and holiday cottages in Golfo de Nicoya, consider staying in Tejar which is 42 km (26 miles) away. Other places in and around Golfo de Nicoya where you can find information about places to rent, and car hire include San Rafael Abajo which is 44 km (27 miles) away, Quepos, Esparza and Chacarita.