- Forecast
- Maps
- Live
- Weather State
- Spot Information
Avellanas Rivermouth Surf Forecast
/ Guanacaste (28 surf breaks) /
Avellanas Rivermouth surfForecast / Guanacaste / Costa Rica
12 Day Weather and Surf, issued 11 pm Tuesday 18 Feb 2025 CST
Best Forecast Surf Conditions for Avellanas Rivermouth this week:
The surf forecast for Avellanas Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Feb 19) at 12PM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.5m and 11s. Another secondary swell of 0.2m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Avellanas Rivermouth in the next 12 days are 0.7m 16s and forecast to arrive on Tuesday (Feb 25) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Feb 20) at 6PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 19th Feb) | 1.5ft (0.4m) 16s |
| Best Surf | 3PM (Tue 25th Feb) | 2ft (0.6m) 17s |
| Most Powerful | 9PM (Tue 25th Feb) | 2.5ft (0.7m) 16s |
Table - best surf conditions forecast for Avellanas Rivermouth over the next 12 days.
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 01 | Sun 02 | |||||||||||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 16 | 14 | 14 | 13 | 13 | 12 | 12 | 16 | 14 | 18 | 14 | 16 | 16 | 14 | 14 | 14 | 13 | 17 | 17 | 16 | 16 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 102 | 100 | 98 | 55 | 51 | 88 | 61 | 52 | 52 | 99 | 103 | 80 | 114 | 171 | 125 | 167 | 169 | 169 | 85 | 101 | 219 | 266 | 348 | 218 | 301 | 384 | 265 | 249 | 246 | 173 | 169 | 152 | 155 | 155 | 152 | 152 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | off | on | cross- on | cross | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- off | on | cross- on | cross- off | cross- on | cross- on | off | glass | cross- on | cross- off | on | cross- on | off | on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- off |
High Tide / height (m) | 6:53AM 1.98 | 7:12PM 2.14 | 7:34AM 1.85 | 7:54PM 2.04 | 8:22AM 1.73 | 8:45PM 1.96 | 9:22AM 1.65 | 9:47PM 1.92 | 10:35AM 1.64 | 10:57PM 1.94 | 11:47AM 1.72 | 12:03AM 2.03 | 12:47PM 1.89 | 1:00AM 2.17 | 1:38PM 2.10 | 1:51AM 2.31 | 2:24PM 2.33 | 2:39AM 2.44 | 3:07PM 2.54 | 3:24AM 2.54 | 3:50PM 2.70 | 4:10AM 2.58 | 4:34PM 2.79 | |||||||||||||
Low Tide / height (m) | 12:51AM 0.52 | 12:53PM 0.58 | 1:32AM 0.62 | 1:31PM 0.69 | 2:20AM 0.71 | 2:17PM 0.79 | 3:18AM 0.77 | 3:15PM 0.86 | 4:28AM 0.78 | 4:27PM 0.87 | 5:37AM 0.72 | 5:41PM 0.81 | 6:35AM 0.59 | 6:45PM 0.67 | 7:24AM 0.44 | 7:39PM 0.50 | 8:09AM 0.28 | 8:29PM 0.32 | 8:52AM 0.14 | 9:16PM 0.16 | 9:34AM 0.03 | 10:03PM 0.05 | 10:17AM -0.02 | |||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 01 | Sun 02 | |||||||||||||||||||||||||
| Sunrise | - | 6:01 | - | - | 6:01 | - | - | 6:01 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:56 | - | - | 5:56 | - |
| Sunset | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 |
 |  | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 27 | 30 | 28 | 27 | 31 | 30 | 27 | 31 | 32 | 27 | 31 | 32 | 27 | 31 | 29 | 27 | 30 | 28 | 26 | 30 | 28 | 26 | 31 | 30 | 28 | 30 | 30 | 26 | 31 | 32 | 27 | 31 | 32 | 27 | 32 | 29 |
| Feels °C (?) | 30 | 32 | 29 | 30 | 31 | 32 | 27 | 29 | 30 | 24 | 28 | 31 | 27 | 31 | 30 | 30 | 32 | 28 | 28 | 30 | 28 | 29 | 31 | 32 | 27 | 31 | 33 | 28 | 32 | 33 | 25 | 28 | 31 | 26 | 33 | 30 |
Short Range Forecast: Mostly dry. Warm (max 32°C on Fri afternoon, min 23°C on Thu night). Winds increasing (light winds from the SSE on Tue night, fresh winds from the NE by Fri morning). | Days 3-6 Weather Summary Mostly dry. Warm (max 32°C on Sat afternoon, min 23°C on Sun night). Winds decreasing (fresh winds from the ENE on Fri night, light winds from the SE by Sun night). | Days 6-9 Weather Summary Mostly dry. Warm (max 31°C on Wed morning, min 23°C on Mon night). Wind will be generally light. | Long Range Forecast: Mostly dry. Warm (max 32°C on Fri afternoon, min 24°C on Thu night). Winds increasing (light winds from the SE on Thu night, fresh winds from the NE by Sat morning). | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Avellanas Rivermouth 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 Avellanas Rivermouth Surf forecast
The above surf forecast table for Avellanas Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Avellanas Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Avellanas Rivermouth 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 (Avellanas Rivermouth) 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 Avellanas Rivermouth 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.
Avellanas Rivermouth is 44 km (27 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.
Nearest