Surf Forecasts:
The Cave surf forecast from 11 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 11AM (local time) - 5.5ft (1.7m), 19s period, SSW swell with 2,136 kJ wave energy.
Best Forecast Surf Conditions for The Cave this week:
The most powerful waves expected at The Cave in the next 16 days are 1.7m 19s and forecast to arrive on Tuesday (Aug 18) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (+0530) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Tue 18th Aug) | 5.5ft (1.7m) 19s |
Table - best surf conditions forecast for The Cave over the next 16 days.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu night. Warm (max 31°C on Thu morning, min 26°C on Tue night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 32°C on Sat morning, min 26°C on Fri night). Winds decreasing (strong winds from the SSW on Fri afternoon, light winds from the WSW by Sun night). | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
AM | 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) | S 20 | S 19 | S 18 | S 16 | S 16 | S 15 | SSE 11 | SSE 11 | SSE 10 | SSE 11 | S 19 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | S 21 | SSW 20 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1260 | 994 | 875 | 330 | 406 | 506 | 376 | 303 | 227 | 314 | 259 | 303 | 195 | 184 | 249 | 254 | 254 | 202 | 191 | 441 | 1424 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross |
High Tide | 2:51PM0.17m | 4:30AM0.23m | 3:12PM0.17m | 4:46AM0.23m | 3:29PM0.16m | 5:01AM0.23m | 3:45PM0.16m | 5:13AM0.23m | 4:00PM0.15m | 5:20AM0.22m | 4:16PM0.15m | 5:22AM0.21m | 4:32PM0.14m | 5:19AM0.20m | |||||||
Low Tide | 10:03AM0.10m | 9:26PM-0.01m | 10:27AM0.10m | 9:42PM-0.01m | 10:49AM0.10m | 9:55PM-0.00m | 11:07AM0.10m | 10:08PM0.00m | 11:21AM0.10m | 10:17PM0.02m | 11:32AM0.09m | 10:24PM0.03m | 11:42AM0.09m | 10:25PM0.05m | |||||||
 | |  |  | | | | |  | | |  | | | | | | | | | | |
 | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 6:19 | — | — | 6:17 | — | — | 6:17 | — | — | 6:17 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — |
mm | — | — | — | — | — | — | — | — | 3 | — | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 29 | 27 | 30 | 29 | 27 | 31 | 31 | 27 | 31 | 30 | 27 | 32 | 32 | 27 | 32 | 32 | 28 | 31 | 31 | 29 |
Feels °C | 28 | 26 | 26 | 28 | 26 | 26 | 29 | 28 | 27 | 29 | 27 | 26 | 30 | 30 | 26 | 31 | 30 | 28 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 20 | S 12 | S 18 | S 16 | S 16 | S 15 | SSE 11 | SSE 11 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSW 20 |
| kJ | 1260 | 416 | 875 | 330 | 406 | 506 | 376 | 303 | 227 | 314 | 259 | 303 | 195 | 184 | 249 | 254 | 254 | 202 | 191 | 149 | 1424 |
Swell 2 Height (m) Direction Period (s) | S 20 | S 19 | S 12 | S 12 | SSE 11 | SSE 10 | SW 15 | SSW 15 | SSE 21 | S 19 | S 19 | S 17 | SSE 16 | S 15 | SW 14 | SW 14 | SW 14 | SSW 14 | S 22 | S 21 | SSE 10 |
| kJ | 753 | 994 | 397 | 178 | 99 | 86 | 54 | 85 | 146 | 188 | 256 | 220 | 90 | 112 | 54 | 52 | 52 | 18 | 83 | 441 | 114 |
Swell 3 Height (m) Direction Period (s) | SSW 19 | SSW 18 | SSW 13 | SSE 10 | S 12 | S 21 | S 20 | S 19 | SSW 13 | SSW 16 | SSW 16 | SSW 16 | SSE 14 | SSW 15 | — | S 26 | S 26 | SSW 24 | SSW 17 | SSW 16 | SSW 14 |
| kJ | 664 | 124 | 129 | 146 | 98 | 9 | 30 | 66 | 60 | 53 | 102 | 102 | 62 | 87 | — | 13 | 13 | 54 | 27 | 51 | 140 |
Wind waves Height (m) Direction Period (s) | S 13 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SW 6 | SW 6 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SSW 6 |
| kJ | 917 | 205 | 72 | 77 | 237 | 77 | 44 | 140 | 51 | 85 | 216 | 62 | 41 | 115 | 36 | 36 | 123 | 55 | 46 | 197 | 49 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 639 | 1034 | 452 | 639 | 452 | 1034 | 43 | 46 | 45 | 43 | 45 | 45 | 35 | 172 | 15 | 43 | 452 | 15 | 43 | 1034 | 43 |
Best forecast wave conditions in East Sri Lanka | |||||||||||||||||||||
Best forecast wave conditions in Sri Lanka | |||||||||||||||||||||
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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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