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Avellanas Rivermouth Surf Forecast
/ Guanacaste (28 surf breaks) /
Avellanas Rivermouth surfForecast / Guanacaste / Costa Rica
12 Day Weather and Surf, issued 11 am Thursday 24 Apr 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 Thursday (Apr 24) at 3PM. The primary swell is predicted to be 1.3m and 15s period with a secondary swell of 0.2m and 22s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Avellanas Rivermouth in the next 12 days are 1.5m 17s and forecast to arrive on Sunday (Apr 27) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Tuesday (Apr 29) at 6PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Thu 24th Apr) | 4.5ft (1.3m) 15s |
| Best Surf | 12PM (Sat 26th Apr) | 4.5ft (1.4m) 16s |
| Most Powerful | 6PM (Sun 27th Apr) | 5ft (1.5m) 17s |
Table - best surf conditions forecast for Avellanas Rivermouth over the next 12 days.
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | |||||||||||||||||||||||||
| 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 | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 14 | 15 | 15 | 15 | 18 | 18 | 16 | 16 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 18 | 18 | 13 | 19 | 15 | 18 | 18 | 16 | 16 | 15 | 15 | 18 | 15 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 561 | 740 | 589 | 435 | 559 | 540 | 731 | 1055 | 1228 | 1284 | 1346 | 1361 | 1055 | 688 | 582 | 520 | 554 | 581 | 456 | 456 | 514 | 442 | 639 | 378 | 384 | 543 | 607 | 366 | 381 | 371 | 344 | 266 | 486 | 335 | 362 | 430 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross- on | cross- on | off | cross- on | cross- on | cross- off | on | cross- on | cross- off | on | cross- on | cross- off | cross- on | cross | cross- off | on | cross- on | cross- off | on | glass | cross- off | cross- on | cross- on | off | cross | glass | cross- off | cross | glass | off | cross- off | cross- off | off | cross- off |
High Tide / height (m) | 11:31AM 2.19 | 11:57PM 2.10 | 12:26PM 2.40 | 12:55AM 2.23 | 1:18PM 2.59 | 1:49AM 2.36 | 2:08PM 2.74 | 2:39AM 2.46 | 2:57PM 2.82 | 3:29AM 2.51 | 3:45PM 2.83 | 4:18AM 2.51 | 4:35PM 2.75 | 5:09AM 2.45 | 5:25PM 2.62 | 6:01AM 2.34 | 6:17PM 2.44 | 6:56AM 2.22 | 7:13PM 2.26 | 7:56AM 2.11 | 8:13PM 2.09 | 9:00AM 2.04 | 9:19PM 1.96 | |||||||||||||
Low Tide / height (m) | 5:50PM 0.53 | 6:05AM 0.44 | 6:48PM 0.33 | 6:59AM 0.30 | 7:41PM 0.13 | 7:50AM 0.18 | 8:31PM -0.02 | 8:40AM 0.09 | 9:19PM -0.11 | 9:30AM 0.05 | 10:08PM -0.12 | 10:20AM 0.07 | 10:57PM -0.07 | 11:11AM 0.16 | 11:48PM 0.05 | 12:04PM 0.30 | 12:40AM 0.20 | 1:01PM 0.45 | 1:37AM 0.36 | 2:04PM 0.60 | 2:37AM 0.50 | 3:13PM 0.70 | ||||||||||||||
Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 01 | Friday 02 | Saturday 03 | Sunday 04 | Monday 05 | |||||||||||||||||||||||||
| Sunrise | 5:28 | - | - | 5:28 | - | - | 5:26 | - | - | 5:26 | - | - | 5:26 | - | - | 5:26 | - | - | 5:26 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - | 5:24 | - | - |
| Sunset | - | 5:53 | - | - | 5:53 | - | - | 5:53 | - | - | 5:53 | - | - | 5:53 | - | - | 5:53 | - | - | 5:54 | - | - | 5:54 | - | - | 5:54 | - | - | 5:54 | - | - | 5:54 | - | - | 5:54 | - |
 | |  | | |  |  | | | | | | | | | | | | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | 2 | - | - | 2 | - | - | 4 | - | - | 4 | - | - | 6 |
| Temp. °C | 32 | 30 | 29 | 32 | 30 | 28 | 32 | 31 | 28 | 32 | 29 | 28 | 32 | 30 | 28 | 31 | 30 | 28 | 31 | 30 | 28 | 30 | 29 | 28 | 31 | 30 | 28 | 29 | 30 | 28 | 29 | 29 | 28 | 30 | 29 | 28 |
| Feels °C (?) | 33 | 30 | 31 | 32 | 29 | 29 | 31 | 30 | 29 | 32 | 29 | 29 | 32 | 29 | 29 | 32 | 31 | 30 | 32 | 31 | 30 | 31 | 30 | 31 | 32 | 31 | 30 | 33 | 31 | 30 | 33 | 30 | 31 | 32 | 30 | 31 |
Short Range Forecast: Some drizzle, heaviest during Thu night. Warm (max 32°C on Thu morning, min 25°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 32°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | Days 6-9 Weather Summary Light rain (total 5mm), mostly falling on Wed night. Warm (max 31°C on Wed morning, min 26°C on Wed night). Wind will be generally light. | Long Range Forecast: Moderate rain (total 14mm), heaviest on Sat night. Warm (max 30°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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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.
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