Surf Forecast Surf Report
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Surf Forecasts

Diria surfForecast / Guanacaste / Costa Rica

information circle12 Day Weather and Surf, issued 5 am Sunday 15 Jun 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
30.0° C
 (Which is 1.4°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Diria this week:

The surf forecast for Diria over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 15) at 9AM. The primary swell is predicted to be 1.2m and 15s period with a secondary swell of 1.1m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Diria in the next 12 days are 1.3m 15s and forecast to arrive on Sunday (Jun 15) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 13s period and expected on Wednesday (Jun 18) at 3AM.

Wave TypeTime (CST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 15th Jun)4ft (1.2m) 15s
Best Surf 9AM (Sun 15th Jun)4ft (1.2m) 15s
Most Powerful 3PM (Sun 15th Jun)4.5ft (1.3m) 15s

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

Hourly12 Days
Guanacaste Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
3
3
3
2
2
0
2
2
2
3
2
1
1
2
1
1
1
1
0
1
1
0
1
1
0
1
2
0
4
1
1
3
2
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
SW
1.3
SSW
0.9
SW
0.8
SSW
0.8
SSW
0.8
SSW
1.4
SSW
1.4
SSW
1.2
SSW
1.3
SSW
1.2
SSW
0.6
SW
0.6
SW
0.7
SW
0.7
SW
0.6
SW
0.6
SW
0.7
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.5
SW
0.5
SW
0.4
SW
0.5
SW
0.5
SW
1.6
SSW
0.5
SW
3
SSW
0.4
SW
1.4
WSW
1.8
SW
1.1
SW
1.2
W
0.7
SW
Period(s) (?)15151415141377881216151514151513141414141413131414813820777716
Wave
Graph
(?)Metric surfscale
Energy (?)80579564054951836044141841430954923422124823519219418316217417112212190871021024131511153178378617229147251
Wind
(km/h)
15
SE
15
SSE
5
ESE
5
ESE
15
SSW
5
ENE
20
S
10
E
5
SSE
10
ENE
10
NNE
5
E
5
N
10
WNW
15
ENE
20
ENE
15
NE
15
E
10
ENE
5
SSW
10
ENE
10
ENE
5
WSW
15
E
5
ESE
10
SSW
10
ESE
5
E
10
SW
10
ENE
10
ENE
10
W
10
ESE
20
SE
15
S
10
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		crossoffglasscross-
off		cross-
off		offcrossonoffcross-
off		cross-
off		offoffcross-
on		cross-
off		offcross-
on		offglasscrosscross-
off		glasscross-
on		offoffoncross-
off		cross-
off		crosscross
High Tide
/ height (m)
5:25PM
2.24
6:03AM
2.16
6:08PM
2.18
6:47AM
2.19
6:56PM
2.12
7:34AM
2.23
7:49PM
2.06
8:26AM
2.28
8:49PM
2.01
9:23AM
2.32
9:53PM
1.99
10:23AM
2.38
11:00PM
2.01
11:25AM
2.44
12:04AM
2.07
12:25PM
2.50
1:05AM
2.16
1:23PM
2.55
2:03AM
2.25
2:19PM
2.59
2:57AM
2.33
3:11PM
2.59
Low Tide
/ height (m)
11:18AM
0.56
11:45PM
0.35
12:03PM
0.58
12:26AM
0.38
12:53PM
0.59
1:11AM
0.43
1:48PM
0.59
2:00AM
0.47
2:48PM
0.56
2:56AM
0.49
3:51PM
0.50
3:56AM
0.50
4:55PM
0.42
5:00AM
0.47
5:58PM
0.32
6:04AM
0.41
6:57PM
0.21
7:05AM
0.35
7:52PM
0.12
8:03AM
0.28
8:45PM
0.05
8:58AM
0.25
9:35PM
0.03
Sunday
15
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wednesday
25
Thursday
26
Sunrise5:22--5:22--5:22--5:22--5:22--5:22--5:22--5:22--5:22--5:22--5:24--5:24--
Sunset-6:05--6:05--6:06--6:06--6:06--6:06--6:06--6:07--6:07--6:07--6:07--6:07-
thunderstorm mod rainthunderstorm thunderstorm thunderstorm thunderstorm heavy rainpart cloudrain showerslight rainthunderstorm part cloudpart cloudthunderstorm thunderstorm part cloudpart cloudpart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm rain showersthunderstorm thunderstorm thunderstorm mod rainthunderstorm rain showersthunderstorm thunderstorm light rainthunderstorm thunderstorm
Rain (mm)
5685103175-641--42---1732881672641812112185
Temp. °C282726282825232525252626292926292925292826282825282826282826282726262624
Feels °C (?)303029313129252929282930343329313127343230323228313130323230323029282927

Short Range Forecast: Heavy rain (total 146mm), heaviest during Tue morning. Warm (max 28°C on Sun morning, min 21°C on Tue morning). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Wed morning. Warm (max 29°C on Thu morning, min 24°C on Wed morning). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 43mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 24°C on Sun night). Wind will be generally light.

Long Range Forecast: Heavy rain (total 246mm), heaviest during Thu night. Warm (max 28°C on Tue morning, min 23°C on Thu night). Wind will be generally light.

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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View detailed surf forecast for Diria at:
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Information about the Diria Surf forecast

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

Diria is 47 km (29 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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