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Islita Surf Forecast
/ Guanacaste (28 surf breaks) /
Surf Forecasts:
Islita surfForecast / Guanacaste / Costa Rica
16 Day Weather and Surf, issued 11 am Friday 20 Mar 2026 CSTForecast update in hr min s Forecast update imminent
Islita surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Islita sea temperature is
29.5° C
(Which is 1.3°C warmer than normal for this time of year)Best Forecast Surf Conditions for Islita this week:
The surf forecast for Islita over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Mar 20) at 9PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.7m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Islita in the next 16 days are 1.1m 13s and forecast to arrive on Sunday (Mar 22) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Saturday (Mar 21) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 20th Mar) | 3ft (0.9m) 13s |
| Best Surf | 3AM (Sat 21st Mar) | 3ft (0.9m) 13s |
| Most Powerful | 9AM (Sun 22nd Mar) | 3.5ft (1.1m) 13s |
Table - best surf conditions forecast for Islita over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Some drizzle, heaviest during Fri night. Warm (max 31°C on Sat morning, min 24°C on Sun night). Wind will be generally light. | Days 3-6 Weather Summary Some drizzle, heaviest during Wed night. Warm (max 30°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||
| 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 | 13 | 15 | 13 | 15 | 14 | 13 | 13 | 13 | 12 | 12 | 15 | 18 | 13 | 11 | 16 | 12 | 11 | 15 | 15 | 14 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 336 | 361 | 229 | 222 | 158 | 416 | 423 | 340 | 319 | 232 | 228 | 155 | 252 | 184 | 123 | 208 | 141 | 91 | 104 | 106 | 102 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | on | cross- off | cross- off | cross- on | cross- off | cross- off | cross- on | cross- off | glass | cross- on | glass | off | cross- on | glass | cross- off | cross- on | glass | glass | cross- on | off |
High Tide / height (m) | 3:44PM 2.79 | 4:07AM 2.58 | 4:24PM 2.83 | 4:49AM 2.57 | 5:07PM 2.81 | 5:34AM 2.50 | 5:52PM 2.71 | 6:22AM 2.39 | 6:42PM 2.57 | 7:16AM 2.25 | 7:39PM 2.40 | 8:20AM 2.13 | 8:46PM 2.25 | ||||||||
Low Tide / height (m) | 9:29AM 0.15 | 10:00PM 0.06 | 10:09AM 0.11 | 10:42PM 0.03 | 10:51AM 0.13 | 11:26PM 0.06 | 11:36AM 0.20 | 12:13AM 0.15 | 12:25PM 0.32 | 1:06AM 0.28 | 1:21PM 0.47 | 2:06AM 0.42 | 2:27PM 0.61 | ||||||||
Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||
| Sunrise | 5:46 | - | - | 5:45 | - | - | 5:43 | - | - | 5:43 | - | - | 5:43 | - | - | 5:43 | - | - | 5:41 | - | - |
| Sunset | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - |
 | |  | | |  | | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 2 | 2 |
| Temp. °C | 30 | 29 | 27 | 31 | 30 | 27 | 31 | 30 | 27 | 30 | 30 | 27 | 30 | 30 | 28 | 30 | 30 | 28 | 30 | 29 | 27 |
| Feels °C (?) | 31 | 30 | 30 | 31 | 31 | 29 | 32 | 31 | 30 | 30 | 31 | 31 | 31 | 32 | 33 | 31 | 32 | 32 | 31 | 31 | 31 |
- Map Icons:
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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 Islita 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 Islita Surf forecast
The above surf forecast table for Islita provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Islita can be found by selecting the local surf guide option on the grey menu. Our Islita 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 (Islita) 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 Islita 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.
Islita is 33 km (20 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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