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Surf Forecasts:

Batu Karas surfForecast / Java – Central / Indonesia
Forecast update in hr min s Forecast update imminent
Batu Karas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Batu Karas sea temperature is
30.0° C
(Which is 1.3°C warmer than normal for this time of year)Batu Karas surf forecast from 29 May 2026:
- Best quality surf: Wednesday 3 Jun, 1PM (local time) - 6ft (1.9m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 3 Jun, 4AM (local time) - 7ft (2.2m), 14s period, SSW swell with 1,939 kJ wave energy.
- Next surfable swell (1★+): Saturday 30 May, 1PM (local time) - 5ft (1.5m), 13s period with SW 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 Saturday (May 30) at 1PM. The primary swell is predicted to be 1.5m and 13s period with a secondary swell of 0.1m and 7s. Another secondary swell of 0.5m and 6s 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 2.2m 14s and forecast to arrive on Wednesday (Jun 03) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Jun 05) at 10AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sat 30th May) | 5ft (1.5m) 13s |
| Best Surf | 1PM (Wed 3rd Jun) | 6ft (1.9m) 14s |
| Most Powerful | 4AM (Wed 3rd Jun) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Batu Karas over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sun morning. Warm (max 28°C on Sat morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Warm (max 28°C on Thu morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 30 | Sunday 31 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | Friday 5 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
SW 13 | SW 13 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 15 | S 14 | SSW 14 | S 13 | SSW 13 | SSW 17 | SW 16 | SW 16 | SW 14 | SSW 18 | |
854 | 757 | 627 | 488 | 472 | 359 | 251 | 411 | 630 | 756 | 894 | 1801 | 1442 | 1189 | 772 | 528 | 487 | 767 | 1018 | 777 | 770 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross | cross-on | cross | cross-off | cross-on | cross | cross | on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | |
High Tide | 7:07AM1.56m | 8:11PM1.09m | 7:41AM1.59m | 8:45PM1.10m | 8:15AM1.61m | 9:18PM1.11m | 8:49AM1.62m | 9:51PM1.11m | 9:23AM1.61m | 10:25PM1.11m | 9:57AM1.57m | 11:01PM1.11m | 10:30AM1.52m | 11:39PM1.12m | |||||||
Low Tide | 2:05PM0.20m | 1:18AM0.55m | 2:38PM0.15m | 1:53AM0.53m | 3:11PM0.12m | 2:26AM0.51m | 3:44PM0.13m | 3:00AM0.52m | 4:17PM0.15m | 3:34AM0.54m | 4:50PM0.19m | 4:09AM0.58m | 5:24PM0.24m | ||||||||
5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | |
— | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | |
— | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 2 | 7 | |
Temp °C | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 28 | 27 | 26 | 27 | 27 | 27 |
30 | 30 | 29 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 15 | S 14 | SSW 14 | S 13 | S 12 | S 12 | SSE 12 | SW 16 | SW 14 | SW 15 |
854 | 757 | 627 | 488 | 472 | 359 | 251 | 411 | 630 | 756 | 894 | 1801 | 1442 | 1189 | 772 | 434 | 416 | 483 | 1018 | 777 | 631 | |
Swell 2 Height (m) Direction Period (s) | E 6 | W 15 | SSW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 11 | SW 13 | SE 6 | SSW 17 | SW 16 | SSW 15 | S 14 | SSW 14 | SSW 13 | SSW 12 | SW 16 | SSE 11 | SSW 9 | SSW 18 |
1 | 4 | 31 | 61 | 103 | 326 | 196 | 183 | 113 | 62 | 618 | 558 | 807 | 790 | 569 | 528 | 325 | 767 | 447 | 113 | 770 | |
Swell 3 Height (m) Direction Period (s) | SE 8 | S 20 | W 14 | W 11 | W 10 | W 10 | SW 15 | SW 14 | SSW 20 | SSW 18 | SSW 21 | SE 6 | SE 6 | SW 19 | SSW 18 | SW 18 | SSW 17 | SSW 12 | S 11 | S 11 | S 8 |
2 | 7 | 4 | 2 | 2 | 2 | 174 | 132 | 75 | 249 | 45 | 47 | 25 | 184 | 547 | 383 | 487 | 180 | 58 | 36 | 61 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | ESE 4 | ESE 5 | ESE 5 | ESE 6 | — | SE 6 | — | — | SE 6 | SE 6 | ESE 6 | ESE 6 | — | SE 6 | SE 6 | SE 6 |
18 | 18 | 16 | 18 | 15 | 16 | 19 | 23 | 68 | — | 49 | — | — | 73 | 73 | 39 | 25 | — | 69 | 72 | 86 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 519 | 18 | 265 | 519 | 6 | 18 | 717 | 6 | 18 | 233 | 8 | 233 | 592 | 8 | 233 | 519 | 8 | 233 | 230 | 18 |
Best forecast wave conditions in Central Java | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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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.











