- Forecast
- Maps
- Live
- Weather State
- Spot Information
Islita Surf Forecast
/ Guanacaste (28 surf breaks) /
Islita surfForecast / Guanacaste / Costa Rica
12 Day Weather and Surf, issued 5 pm Saturday 17 May 2025 CST
Best Forecast Surf Conditions for Islita this week:
The surf forecast for Islita over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 17) at 9PM. The primary swell is predicted to be 4ft and 15s period with a secondary swell of 3ft and 17s. Another secondary swell of 1ft and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Islita in the next 12 days are 5ft 16s and forecast to arrive on Sunday (May 25) at 12AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 17th May) | 4.5ft (1.3m) 15s |
| Best Surf | 9AM (Sat 24th May) | 5ft (1.5m) 16s |
| Most Powerful | 12AM (Sun 25th May) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Islita over the next 12 days.
Sat 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thu 29 | ||||||||||||||||||||||||
| 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 | AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (ft) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 14 | 14 | 13 | 12 | 12 | 19 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 15 | 14 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 706 | 637 | 573 | 543 | 521 | 419 | 569 | 236 | 536 | 351 | 384 | 208 | 248 | 540 | 711 | 695 | 767 | 729 | 720 | 1031 | 1115 | 964 | 1255 | 1224 | 967 | 860 | 897 | 1638 | 1230 | 784 | 608 | 389 | 357 | 331 | 425 | 309 |
Wind (mph) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | on | glass | glass | cross- on | cross- on | glass | cross- on | glass | glass | cross- on | glass | glass | cross- on | glass | glass | cross- on | cross | glass | glass | off | cross- on | on | glass | glass | cross- on | off | glass | cross- on | cross- off | glass | cross- on | glass | cross- off |
High Tide / height (ft) | 5:42PM 7.42 | 6:21AM 6.86 | 6:25PM 7.19 | 7:07AM 6.86 | 7:14PM 6.99 | 7:59AM 6.96 | 8:11PM 6.79 | 8:56AM 7.19 | 9:16PM 6.76 | 9:56AM 7.55 | 10:24PM 6.86 | 10:56AM 8.01 | 11:29PM 7.12 | 11:54AM 8.46 | 12:30AM 7.48 | 12:50PM 8.89 | 1:27AM 7.84 | 1:43PM 9.19 | 2:20AM 8.17 | 2:36PM 9.32 | 3:12AM 8.37 | 3:27PM 9.29 | 4:04AM 8.4 | |||||||||||||
Low Tide / height (ft) | 12:05AM 1.48 | 12:17PM 2.33 | 12:48AM 1.67 | 1:07PM 2.49 | 1:36AM 1.84 | 2:06PM 2.53 | 2:30AM 1.94 | 3:12PM 2.36 | 3:29AM 1.94 | 4:20PM 2.03 | 4:31AM 1.77 | 5:23PM 1.51 | 5:31AM 1.51 | 6:22PM 0.95 | 6:30AM 1.18 | 7:17PM 0.43 | 7:26AM 0.85 | 8:09PM 0 | 8:20AM 0.62 | 9:00PM -0.2 | 9:13AM 0.52 | 9:50PM -0.23 | 10:05AM 0.59 | |||||||||||||
Sat 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thu 29 | ||||||||||||||||||||||||
| Sunrise | - | - | 5:20 | - | - | 5:20 | - | - | 5:20 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 | - | - | 5:18 |
| Sunset | 5:54 | - | - | 5:54 | - | - | 5:55 | - | - | 5:55 | - | - | 5:55 | - | - | 5:55 | - | - | 5:55 | - | - | 5:57 | - | - | 5:57 | - | - | 5:57 | - | - | 5:57 | - | - | 5:58 | - | - |
 |  | | | | | | | | | |  | | | | | | | | | | |  | | | | | | |  | | | | | | | |
Rain (in) | 0.4 | 0.4 | 0.1 | 0.1 | 0.0 | 0.2 | 0.1 | 0.4 | 0.2 | 0.1 | 0.1 | - | 0.0 | 0.1 | - | 0.1 | 0.1 | 0.1 | 0.4 | 0.0 | 0.3 | 0.4 | 0.1 | 0.2 | 0.2 | 0.3 | - | 0.2 | 0.1 | 0.1 | 0.4 | 0.6 | 0.1 | 0.3 | 0.1 | 0.0 |
| Temp. °F | 82 | 81 | 82 | 82 | 81 | 84 | 84 | 81 | 82 | 84 | 81 | 84 | 84 | 81 | 86 | 84 | 82 | 84 | 84 | 81 | 82 | 81 | 79 | 82 | 82 | 81 | 84 | 82 | 81 | 82 | 82 | 79 | 84 | 82 | 79 | 86 |
| Feels °F (?) | 88 | 90 | 88 | 88 | 90 | 90 | 90 | 88 | 90 | 90 | 88 | 91 | 90 | 88 | 91 | 90 | 91 | 93 | 93 | 88 | 90 | 88 | 86 | 90 | 90 | 90 | 91 | 90 | 88 | 91 | 88 | 88 | 93 | 90 | 88 | 93 |
Short Range Forecast: Heavy rain (total 1.9in), heaviest during Sat afternoon. Warm (max 84°F on Mon morning, min 77°F on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 0.6in), heaviest on Thu night. Warm (max 86°F on Thu morning, min 79°F on Tue night). Wind will be generally light. | Days 6-9 Weather Summary Heavy rain (total 1.9in), heaviest during Fri afternoon. Warm (max 84°F on Fri afternoon, min 77°F on Sat night). Wind will be generally light. | Long Range Forecast: Heavy rain (total 1.9in), heaviest during Tue night. Warm (max 86°F on Thu morning, min 79°F on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
Join to view 12 day and hourly surf forecasts
- Map Icons:
Break
Live Wave Height (ft)
Live Wind Speed (mph)
Surf Rating (10 Max)
Ocean Swells (ft)- Wind Speed (mph)
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 12 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.
Nearest