SELECT DAY

12AM6AM12PM6PM11PM

10:00 PM UTC

Surf Quality:

Current Conditions

Excellent conditions right now! Sweet 3.4ft waves with long-period 14s ground swell with light 8kt winds

🌬️ WIND

8
kt

🌊 SWELL

3.4
ft

🌊

Swell Height

3.4ft

🌊

Swell Period

14s

💨

Wind Speed

8kt

🌡️

Air Temp

29°C

💨

Wind Gusts

8kt

🌧️

Precipitation

0mm

🌊

Secondary Swell

1.7ft @ 5s

📡 Data Source

Choose your preferred weather data provider

📍 Local Knowledge

Avellanas Rivermouth is an exposed sandbar break in Guanacaste that offers fairly consistent left and right-hand waves. The most favorable conditions are a south groundswell with offshore winds from the west. When the surf is up, crowds are likely, and surfers should be aware of dangerous rips. The best time for consistent, clean waves is typically in September.

Best Swell: W

Bottom: Sand

Ideal Conditions

Swell: S

Wind: W

🏄 Get Live Updates

Real-time conditions and detailed forecasts

Open SHAMAN App