Diria Surf Forecast

/ Guanacaste (28 surf breaks) /

Costa Rica (96 surf breaks) / Lat Long: (10.32° N 85.84° W)

Surf Forecasts:

Diria surfForecast / Guanacaste / Costa Rica

48hr Weather and Surf, issued 11 am Monday 15 Sep 2025 CST

Forecast update in hr min s Forecast update imminent

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

Today's Diria sea temperature is 28.8° C
(Which is slightly warmer than usual)

How big are the waves at Diria today?

The current surf forecast for Diria at 12PM is: 1.3m 17s primary swell from a South-southwest direction and 0.9m 13s secondary swell from a Southwest direction (forecast issued at 11:00am September 15). The wind direction is predicted to be onshore.

Time (CST) & Date	Wave Height	Wave Period
Morning (15 Sep)	4.5ft (1.3m)	18s
Afternoon (15 Sep)	4.5ft (1.4m)	16s
Evening (15 Sep)	5ft (1.5m)	16s

Table - waves today at Diria. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Monday 15					Tuesday 16								Wednesday 17								Thursday 18
	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM
Rating (10 max)	4	2	3	4	4	4	4	4	4	4	4	3	3	3	4	4	4	4	4	3	3	2	3	3
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	18	17	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14
Wave Graph (?)
Energy (?)	1274	1306	1304	1489	1296	1282	1338	1340	1439	1204	1089	951	939	923	1036	1122	1154	1160	1054	913	930	754	729	669
Wind (km/h)	NNE	WNW	W	ESE	E	ENE	NE	NE	E	ESE	SSE	SSE	ESE	ESE	ESE	ESE	ESE	WSW	SSE	SE	SE	S	SSE	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	on	on	glass	off	off	cross- off	glass	off	glass	glass	cross- off	cross- off	cross- off	cross- off	cross- off	glass	glass	cross- off	cross- off	cross- off	cross	cross- off	cross- off
High Tide / height (m)	8:17AM 2.24				8:59PM 1.96					9:28AM 2.12				10:17PM 1.93				10:45AM 2.07				11:33PM 1.98
Low Tide / height (m)			2:47PM 0.47					3:07AM 0.62				4:01PM 0.55				4:26AM 0.67				5:15PM 0.54				5:42AM 0.64

	Monday 15					Tuesday 16								Wednesday 17								Thursday 18
Sunrise	5:33	-	-	-	-	-	-	5:33	-	-	-	-	-	-	-	5:31	-	-	-	-	-	-	-	5:31
Sunset	-	-	5:44	-	-	-	-	-	-	-	5:43	-	-	-	-	-	-	-	5:42	-	-	-	-	-

Rain (mm)	-	1	5	4	-	-	-	-	-	-	5	3	-	-	3	3	4	3	5	2	1	1	1	2
Temp. °C	27	28	27	26	26	25	25	25	27	29	28	27	26	26	25	25	27	27	25	25	25	25	24	24
Feels °C (?)	32	31	31	30	29	28	29	29	30	33	33	31	29	30	28	28	32	31	29	28	28	29	28	27

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 Diria (light winds from the WSW at Liberia/Tomas Guardia Airport 45 km from Diria). 0.9m 17s long period groundswell from the SW with a 0.8m 13s groundswell, also from the SW. 2 swells combining to make bigger set waves.
2 hours 17 minutes ago Diria

Expand

View all

45 km away, 2 h 17 min ago

9 km/h

WSW

0.0

28.8

Air / Water (°C)

Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Diria 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.