Surf Forecasts:
The Cave surf forecast from 20 Sep 2026:
- Most powerful swell: Saturday 26 Sep, 11PM (local time) - 5ft (1.5m), 18s period, SSW swell with 1,392 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 1.5m 18s and forecast to arrive on Saturday (Sep 26) 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 (Sat 26th Sep) | 5ft (1.5m) 18s |
Table - best surf conditions forecast for The Cave over the next 16 days.
Short Range ForecastMostly dry. Warm (max 32°C on Wed afternoon, min 26°C on Mon night). Winds increasing (moderate winds from the WSW on Sun night, strong winds from the SW by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 32°C on Thu morning, min 27°C on Wed night). Mainly strong winds. | ||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | ||||||||||||||
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 14 | SSW 13 | S 13 | S 13 | S 12 | S 19 | SSW 17 | SSW 7 | SSW 7 | S 14 | SSW 6 | SSW 6 | SW 6 | SSW 14 | SSW 6 | SSW 22 | SSW 20 | SSW 20 | SSW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 1095 | 836 | 350 | 259 | 305 | 256 | 315 | 266 | 257 | 200 | 172 | 207 | 85 | 163 | 170 | 489 | 1040 | 1141 | 1162 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross |
High Tide | 3:01AM0.20m | 1:34PM0.14m | 2:53AM0.20m | 1:44PM0.15m | 2:53AM0.21m | 2:05PM0.17m | 2:58AM0.22m | 2:30PM0.17m | 3:07AM0.23m | 2:56PM0.18m | 3:18AM0.24m | 3:23PM0.18m | 3:30AM0.24m | ||||||
Low Tide | 9:18AM0.11m | 7:49PM0.04m | 8:57AM0.10m | 8:02PM0.02m | 8:56AM0.08m | 8:16PM0.02m | 9:06AM0.06m | 8:33PM0.02m | 9:22AM0.05m | 8:49PM0.02m | 9:41AM0.03m | 9:05PM0.03m | |||||||
 |  | | | | | | | | | | | | |  |  | | | | |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — |
 | — | — | 6:00 | — | — | 5:59 | — | — | 5:59 | — | — | 5:58 | — | — | 5:58 | — | — | 5:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 30 | 29 | 27 | 31 | 31 | 27 | 31 | 32 | 27 | 32 | 32 | 27 | 32 | 32 | 27 | 32 | 32 | 28 |
Feels °C | 27 | 28 | 26 | 26 | 29 | 28 | 26 | 28 | 29 | 26 | 29 | 29 | 27 | 30 | 29 | 26 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | S 16 | S 13 | S 13 | S 12 | S 12 | SSE 7 | SSW 16 | S 16 | S 7 | SSW 13 | SSW 14 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSW 20 | SSW 20 | SSW 18 |
| kJ | 1095 | 46 | 350 | 259 | 305 | 136 | 73 | 266 | 177 | 86 | 54 | 108 | 37 | 59 | 41 | 84 | 1040 | 1141 | 1162 |
Swell 2 Height (m) Direction Period (s) | S 18 | SE 8 | S 15 | SSW 13 | S 17 | S 19 | SSW 17 | S 11 | S 11 | S 14 | S 10 | SE 8 | SSW 13 | SSW 14 | SSW 14 | SSW 22 | SSE 9 | SSE 9 | SSW 14 |
| kJ | 56 | 9 | 39 | 68 | 146 | 256 | 315 | 58 | 63 | 200 | 29 | 11 | 59 | 163 | 116 | 489 | 90 | 133 | 183 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SSW 19 | SE 8 | SSW 18 | SE 8 | SSW 12 | S 12 | — | S 11 | SW 15 | SSW 14 | SW 18 | S 8 | S 26 | S 24 | SSW 13 | SSW 13 | SSW 16 | SSW 14 |
| kJ | 9 | 37 | 9 | 64 | 9 | 58 | 132 | — | 56 | 55 | 21 | 12 | 22 | 13 | 99 | 102 | 95 | 137 | 330 |
Wind waves Height (m) Direction Period (s) | SW 6 | SSW 13 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SSW 7 | SSW 7 | SW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | SSW 9 |
| kJ | 207 | 836 | 227 | 103 | 127 | 227 | 82 | 220 | 257 | 72 | 172 | 207 | 85 | 111 | 170 | 75 | 75 | 195 | 308 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1034 | 43 | 1034 | 639 | 699 | 699 | 699 | 45 | 639 | 699 | 45 | 639 | 1034 | 43 | 639 | 639 | 43 | 639 | 45 |
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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