Surf Forecasts:
Batu Karas surf forecast from 23 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 7AM (local time) - 4.5ft (1.3m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 27 Jul, 4AM (local time) - 10ft (3.0m), 10s period, SE swell with 1,838 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 7AM (local time) - 4.5ft (1.3m), 15s period with SSW swell.
Best Forecast Surf Conditions for Batu Karas this week:
The surf forecast for Batu Karas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 7AM. The primary swell is predicted to be 1.3m and 15s period with a secondary swell of 0.2m and 24s. Another secondary swell of 1.9m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Batu Karas in the next 16 days are 3.0m 10s and forecast to arrive on Monday (Jul 27) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 29th Jul) | 4.5ft (1.3m) 15s |
| Best Surf | 7AM (Wed 29th Jul) | 4.5ft (1.3m) 15s |
| Most Powerful | 4AM (Mon 27th Jul) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Batu Karas over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu morning. Warm (max 26°C on Thu morning, min 22°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Sun night. Warm (max 26°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | SE 7 | S 9 | SE 8 | S 18 | SSE 9 | SE 8 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SSW 15 | SSW 15 | SSW 14 | SSW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 301 | 348 | 530 | 304 | 548 | 698 | 754 | 680 | 698 | 1081 | 1104 | 1665 | 1441 | 1069 | 770 | 787 | 766 | 553 | 811 | 825 | 586 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross-on | cross | cross-off | cross | cross-on | cross-off | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-on |
High Tide | 2:02PM0.87m | 2:40AM1.34m | 3:41PM0.77m | 3:50AM1.30m | 6:34PM0.78m | 5:13AM1.30m | 7:41PM0.85m | 6:21AM1.36m | 8:12PM0.94m | 7:13AM1.44m | 8:39PM1.03m | 7:54AM1.51m | 9:04PM1.13m | ||||||||
Low Tide | 7:19PM0.59m | 10:29AM0.58m | 7:55PM0.68m | 12:08PM0.52m | 9:23PM0.75m | 1:11PM0.43m | 11:25PM0.76m | 1:52PM0.34m | 00:41AM0.71m | 2:24PM0.26m | 1:33AM0.64m | 2:52PM0.20m | 2:15AM0.57m | ||||||||
 |  |  |  | | | | |  | | | | | | | | | | | | | |
 | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — |
mm | 2 | — | 3 | — | — | 1 | — | — | — | — | — | 9 | 2 | — | 7 | — | — | 2 | — | — | 6 |
Temp °C | 26 | 26 | 25 | 26 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 26 | 26 | 24 | 25 | 26 | 25 | 25 | 26 | 25 |
Feels °C | 24 | 25 | 24 | 24 | 24 | 22 | 24 | 24 | 24 | 25 | 26 | 24 | 27 | 27 | 26 | 27 | 26 | 27 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | SSW 13 | S 9 | S 16 | S 15 | SSW 15 | SSW 14 | SSW 14 | SE 10 | SE 10 | SW 13 | SSW 17 | SSW 17 | SSW 16 | SE 9 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 |
| kJ | 224 | 348 | 198 | 251 | 548 | 477 | 456 | 361 | 261 | 1081 | 1104 | 113 | 170 | 186 | 318 | 787 | 461 | 551 | 811 | 825 | 586 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SW 16 | SSW 12 | SSW 11 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 13 | SW 14 | SSW 12 | SW 13 | SW 12 | SW 12 | SSW 16 | — | S 18 | SSW 23 | SSW 21 | SSW 20 |
| kJ | 188 | 233 | 40 | 233 | 87 | 88 | 40 | 54 | 54 | 137 | 114 | 50 | 79 | 77 | 53 | 314 | — | 155 | 52 | 180 | 342 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | S 22 | SSW 19 | S 18 | WSW 18 | — | WSW 16 | W 11 | W 10 | SW 14 | SSW 12 | SW 18 | SSW 12 | SSW 12 | S 11 | SSW 12 | — | SW 24 | — | — | S 16 |
| kJ | 111 | 9 | 73 | 304 | 30 | — | 25 | 2 | 2 | 91 | 86 | 81 | 28 | 27 | 9 | 55 | — | 22 | — | — | 134 |
Wind waves Height (m) Direction Period (s) | SE 7 | ESE 7 | SE 8 | ESE 7 | SSE 9 | SE 8 | SE 9 | SE 9 | SE 9 | — | — | SE 10 | SE 10 | SE 9 | SE 9 | — | SE 9 | SE 8 | ESE 8 | SE 8 | ESE 8 |
| kJ | 301 | 140 | 530 | 228 | 528 | 698 | 754 | 680 | 698 | — | — | 1665 | 1441 | 1069 | 770 | — | 766 | 553 | 436 | 335 | 384 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 734 | 717 | 230 | 519 | 717 | 230 | 18 | 519 | 8 | 230 | 519 | 230 | 240 | 519 | 18 | 18 | 519 | 6 | 0 | 233 | 8 |
Best forecast wave conditions in Central Java | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Batu Karas 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 Batu Karas Surf forecast
The above surf forecast table for Batu Karas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Batu Karas can be found by selecting the local surf guide option on the grey menu. Our Batu Karas 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 (Batu Karas) 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 Batu Karas 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.
Batu Karas is 43 km (27 miles) from the city of Sidareja. If you plan a holiday in Central Java, look for hotels and other accommodation in Sidareja. Sidareja has rooms for a wide range of budgets as well as car hire and transport links.
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