Surf Forecasts:
The Cave surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 11PM (local time) - 4.5ft (1.4m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 19 Sep, 11PM (local time) - 5ft (1.6m), 16s period, SSW swell with 1,180 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8AM (local time) - 4ft (1.2m), 16s period with SSW swell.
Best Forecast Surf Conditions for The Cave this week:
The surf forecast for The Cave over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 8AM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 1.0m and 9s. Another secondary swell of 1.1m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Cave in the next 16 days are 1.6m 16s and forecast to arrive on Saturday (Sep 19) 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+) | 8AM (Sun 13th Sep) | 4ft (1.2m) 16s |
| Best Surf | 11PM (Mon 14th Sep) | 4.5ft (1.4m) 17s |
| Most Powerful | 11PM (Sat 19th Sep) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for The Cave over the next 16 days.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon afternoon. Warm (max 30°C on Sun morning, min 25°C on Sun night). Winds decreasing (fresh winds from the SSW on Sat afternoon, calm by Mon night). | Days 5-7 Weather SummaryHeavy rain (total 103mm), heaviest during Wed afternoon. Warm (max 28°C on Tue afternoon, min 23°C on Tue night). Winds increasing (light winds from the SW on Tue night, fresh winds from the SW by Thu night). | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | S 16 | SSW 15 | SSW 15 | SSW 15 | SW 8 | SSW 14 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 18 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1152 | 1138 | 679 | 561 | 491 | 432 | 555 | 849 | 849 | 551 | 361 | 500 | 443 | 346 | 662 | 456 | 443 | 361 | 239 | 251 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-off | cross | glassy | off | cross | cross-on | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:43PM0.16m | 4:09AM0.23m | 4:02PM0.16m | 4:12AM0.22m | 4:20PM0.16m | 4:13AM0.21m | 4:37PM0.15m | 4:11AM0.20m | 4:48PM0.14m | 4:06AM0.20m | 4:49PM0.12m | 3:55AM0.19m | 4:09PM0.11m | 3:38AM0.19m | ||||||
Low Tide | 9:33PM0.03m | 10:31AM0.05m | 9:44PM0.04m | 10:40AM0.05m | 9:50PM0.06m | 10:49AM0.05m | 9:51PM0.08m | 10:58AM0.05m | 9:40PM0.09m | 11:07AM0.06m | 9:09PM0.09m | 11:13AM0.07m | 8:22PM0.09m | |||||||
 |  |  |  |  |  | | |  |  |  | |  |  | | |  | | | | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | 6:04 | — | — | 6:04 | — | — | 6:02 | — | — | 6:02 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — |
mm | — | — | — | 2 | 2 | 1 | 3 | 3 | — | 7 | 18 | 6 | 28 | 7 | 24 | 6 | 5 | 2 | 2 | — |
Temp °C | 29 | 28 | 30 | 29 | 27 | 29 | 28 | 27 | 29 | 28 | 26 | 24 | 24 | 24 | 24 | 25 | 25 | 28 | 28 | 26 |
Feels °C | 27 | 28 | 31 | 31 | 28 | 32 | 31 | 32 | 32 | 31 | 30 | 26 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 16 | SSW 15 | SSW 15 | SSW 15 | SSW 8 | SSW 14 | SSW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 6 | SSW 13 |
| kJ | 1152 | 1138 | 679 | 561 | 491 | 389 | 555 | 849 | 849 | 551 | 147 | 500 | 257 | 346 | 662 | 456 | 443 | 361 | 62 | 232 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSW 18 | SSW 13 | SE 9 | SE 9 | SSW 9 | SSW 14 | SSW 8 | SSW 18 | SSW 13 | SSE 8 | S 21 | SE 8 | SE 8 | SSW 13 | SSW 18 |
| kJ | 106 | 108 | 101 | 73 | 53 | 432 | 273 | 27 | 20 | 151 | 361 | 150 | 443 | 178 | 76 | 9 | 17 | 20 | 239 | 251 |
Swell 3 Height (m) Direction Period (s) | — | — | SW 8 | — | SSW 6 | SSE 9 | SE 9 | SE 9 | SW 22 | SE 9 | SSW 19 | SE 8 | SE 8 | SE 10 | — | — | SSW 20 | SSW 19 | SSW 18 | SE 7 |
| kJ | — | — | 65 | — | 26 | 52 | 37 | 27 | 19 | 12 | 124 | 10 | 3 | 23 | — | — | 38 | 74 | 182 | 19 |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 5 | SW 7 | SSW 6 | SW 6 | — | — | — | — | SW 9 | SW 8 | SW 8 | SSW 9 | SSW 8 | S 8 | SSW 7 | SSW 6 | SSW 6 | SW 6 | SW 6 |
| kJ | 88 | 37 | 215 | 104 | 94 | — | — | — | — | 309 | 306 | 311 | 217 | 256 | 217 | 164 | 103 | 68 | 156 | 44 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1259 | 43 | 1202 | 1202 | 0 | 35 | 0 | 0 | 15 | 15 | 15 | 45 | 0 | 35 | 43 | 45 | 452 | 452 | 1034 | 452 |
Best forecast wave conditions in East Sri Lanka | ||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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 16 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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