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Surf Forecasts:
The Cave surfForecast / East / Sri Lanka
12 Day Weather and Surf, issued 4 am Tuesday 16 Sep 2025 +0530
Best Forecast Surf Conditions for The Cave this week:
The most powerful waves expected at The Cave in the next 12 days are 1.0m 20s and forecast to arrive on Monday (Sep 22) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 22nd Sep) | 3.5ft (1.0m) 20s |
Table - best surf conditions forecast for The Cave over the next 12 days.
Short Range Forecast Moderate rain (total 10mm), heaviest on Wed afternoon. Warm (max 31°C on Tue morning, min 26°C on Tue night). Mainly fresh winds. | Days 3-6 Weather Summary Mostly dry. Warm (max 31°C on Sat afternoon, min 26°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||
| 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) (?) | 10 | 12 | 16 | 15 | 15 | 14 | 13 | 13 | 12 | 17 | 18 | 17 | 16 | 16 | 16 | 15 | 6 | 10 | 22 | 21 | 20 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 563 | 682 | 1020 | 859 | 887 | 679 | 583 | 745 | 576 | 464 | 604 | 547 | 680 | 762 | 568 | 519 | 671 | 404 | 718 | 1081 | 905 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross- on | cross | cross | cross- on | cross- on | cross | cross- on | cross- on | cross | cross- on | cross- on | cross | cross- on | cross- on | cross | cross- on | cross- on | cross |
High Tide / height (m) | 2:09PM 0.12 | 3:06AM 0.21 | 2:08PM 0.13 | 3:09AM 0.22 | 2:16PM 0.15 | 3:15AM 0.23 | 2:30PM 0.16 | 3:22AM 0.23 | 2:48PM 0.17 | 3:29AM 0.23 | 3:08PM 0.17 | 3:36AM 0.23 | 3:29PM 0.17 | 3:43AM 0.23 | |||||||
Low Tide / height (m) | 9:52AM 0.09 | 7:57PM 0.05 | 9:35AM 0.09 | 8:07PM 0.03 | 9:29AM 0.08 | 8:20PM 0.02 | 9:29AM 0.08 | 8:35PM 0.01 | 9:34AM 0.07 | 8:50PM 0.02 | 9:43AM 0.06 | 9:05PM 0.02 | 9:53AM 0.05 | 9:19PM 0.03 | |||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||
| Sunrise | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - | 5:52 | - | - |
| Sunset | - | 6:01 | - | - | 6:01 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 6:00 | - | - | 5:59 | - |
 |  |  |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | 2 | 1 | 1 | 4 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 31 | 30 | 28 | 30 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 30 | 31 | 27 | 31 | 30 | 27 | 30 | 29 | 27 |
| Feels °C (?) | 31 | 29 | 28 | 29 | 27 | 29 | 27 | 27 | 27 | 26 | 26 | 26 | 29 | 28 | 26 | 29 | 26 | 26 | 28 | 26 | 27 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for East
Recent cross-shore wind 89 km from Arugam Bay has fallen light (calm at Badulla). Waves should be turning clean at Arugam Bay. 1.2m 6s windswell from the SSW with a 1.0m 9s swell, also from the SSW and a 0.5m 16s long period groundswell, also from the S. 3 swells combining to make bigger set waves.
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 The Cave 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 The Cave Surf forecast
The above surf forecast table for The Cave provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at The Cave can be found by selecting the local surf guide option on the grey menu. Our The Cave 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 (The Cave) 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 The Cave 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.
The Cave is 78 km (48 miles) from Hambantota. If you plan a holiday in East Sri Lanka, look for hotels and other accommodation in Hambantota. Hambantota has rooms for a wide range of budgets as well as car hire and transport links.
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