Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Diria surfForecast / Guanacaste / Costa Rica

information circle48hr Weather and Surf, issued 5 am Sunday 15 Mar 2026 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
28.7° C
 (Which is 1.4°C warmer than normal for this time of year)

How big are the waves at Diria today?

The current surf forecast for Diria at 9AM is: 1.3m 18s primary swell from a South-southwest direction and 0.8m 12s secondary swell from a South-southwest direction, 0.4m 7s secondary swell from a North-northwest direction (forecast issued at 05:00am March 15). The wind direction is predicted to be cross-offshore.

Time (CST) & DateWave HeightWave Period
Morning (15 Mar)4.5ft (1.3m)18s
Afternoon (15 Mar)5ft (1.5m)18s
Evening (15 Mar)4ft (1.2m)17s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Sunday
15
Monday
16
Tuesday
17
Wed
18
3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM
Rating
(10 max)
3
4
3
2
1
1
4
4
4
4
4
2
0
1
2
3
3
3
3
0
0
0
2
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
SSW
1.1
SSW
1.3
SSW
1.3
SSW
1.5
SSW
1.4
SSW
1.2
SSW
1.2
SSW
1.2
SSW
1.2
SSW
1.4
SSW
1.4
SSW
1.1
SW
1
SW
1
SW
1
SW
1
SW
1.1
SSW
0.9
SW
0.9
SW
0.9
SSW
0.9
SW
0.9
SSW
0.9
SSW
Period(s) (?)191918181817171716161716161616161615161616161414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)913787104211181324112583777672267911081055617515508502502519402371419394293289
Wind
(km/h)
15
E
15
ENE
15
ENE
15
WNW
20
WSW
15
SSW
10
SSE
10
ESE
10
ENE
10
ENE
5
NE
15
W
20
WSW
15
SW
10
S
0
SW
5
N
5
NE
0
N
15
W
20
WSW
20
SW
10
S
5
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off		ononcross-
on		cross-
off		offoffoffcross-
off		oncross-
on		cross-
on		crossglassglassglassglassononcross-
on		crossglass
High Tide
/ height (m)
12:16PM
1.83
12:29AM
1.98
1:05PM
2.00
1:18AM
2.10
1:46PM
2.19
Low Tide
/ height (m)
6:00AM
0.71
6:18PM
0.79
6:50AM
0.60
7:10PM
0.64
7:32AM
0.48
7:55PM
0.47
Sunday
15
Monday
16
Tuesday
17
Wed
18
Sunrise-5:50-------5:50-------5:48------
Sunset----5:53-------5:53-------5:53---
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
thunderstorm
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
----------------1-------
Temp. °C242428312928272625242830292727262625283029272727
Feels °C (?)242527322929292727252931302930313029323129283031
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling
Ben Mondy

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling

Get 16% off your subscription with code 16DAYS—available for 16 days only, until March 25, 2026. Surf-Forecast Premium just got better. All paid subscribers will now see a full 16-day forecast, surf reports and wind and tide data for over 7,000 of the world's best surf spots. Premium members will also have access to a new high-resolution forecast model, which enhances our current forecasts by making them quicker and more accurate. That’s more lead time. More confidence. More chances to score g

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

Read more

Read more

Discover more articles and updates in the Greenroom.

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.

View detailed surf forecast for Diria at:
surf-forecast.com

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest