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Batu Karas Surf Forecast
/ Java – Central (5 surf breaks) /
Batu Karas surfForecast / Java – Central / Indonesia
12 Day Weather and Surf, issued 12 am Thursday 31 Jul 2025 WIB
Best Forecast Surf Conditions for Batu Karas this week:
The surf forecast for Batu Karas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 02) at 1PM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.2m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Batu Karas in the next 12 days are 3.0m 19s and forecast to arrive on Tuesday (Aug 05) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 10s period and expected on Tuesday (Aug 05) at 7PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Sat 2nd Aug) | 3.5ft (1.1m) 15s |
| Best Surf | 4PM (Mon 4th Aug) | 7ft (2.1m) 16s |
| Most Powerful | 10PM (Tue 5th Aug) | 10ft (3.0m) 19s |
Table - best surf conditions forecast for Batu Karas over the next 12 days.
Short Range Forecast Heavy rain (total 25mm), heaviest during Wed night. Warm (max 27°C on Fri morning, min 25°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Sat night. Warm (max 27°C on Sun morning, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Thursday 31 | Friday 01 | Saturday 02 | Sunday 03 | Monday 04 | Tuesday 05 | Wed 06 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 8 | 12 | 17 | 16 | 15 | 16 | 15 | 14 | 16 | 16 | 17 | 16 | 16 | 16 | 15 | 15 | 19 | 17 | 16 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 2333 | 1892 | 1372 | 1238 | 1030 | 922 | 778 | 640 | 714 | 1042 | 1387 | 1988 | 2752 | 2198 | 2254 | 2614 | 3254 | 3408 | 6090 | 5155 | 3620 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- on | cross | cross | cross | cross- off | cross | cross | cross | cross | cross | cross- off | cross | cross | cross | cross | cross | cross | |
High Tide / height (m) | 11:49PM 1.50 | 11:46AM 1.26 | 12:19AM 1.47 | 12:18PM 1.11 | 12:51AM 1.42 | 12:52PM 0.97 | 1:29AM 1.36 | 1:38PM 0.83 | 2:19AM 1.30 | 3:27PM 0.72 | 3:38AM 1.26 | 5:13AM 1.29 | ||||||||||
Low Tide / height (m) | 6:01AM 0.45 | 5:47PM 0.35 | 6:43AM 0.50 | 6:08PM 0.43 | 7:32AM 0.56 | 6:28PM 0.52 | 8:40AM 0.61 | 6:46PM 0.60 | 10:30AM 0.61 | 6:58PM 0.68 | 12:24PM 0.52 | 1:19PM 0.41 | ||||||||||
Thursday 31 | Friday 01 | Saturday 02 | Sunday 03 | Monday 04 | Tuesday 05 | Wed 06 | ||||||||||||||||
| Sunrise | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | - | 5:58 | - | |
| Sunset | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | - | - | 5:45 | |
 |  | | | |  |  | |  |  | | | | | | | | |  | | | ||
Rain (mm) | 9 | 6 | 4 | 4 | 2 | - | - | - | - | 1 | 1 | 1 | 1 | - | - | 3 | 1 | - | - | - | - | |
| Temp. °C | 25 | 26 | 26 | 25 | 27 | 26 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 26 | |
| Feels °C (?) | 26 | 26 | 26 | 26 | 28 | 27 | 28 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 27 | |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Java - Central
The wind is still cross-off at Batu Karas (light winds from the SE at Srigunting wx 139 km from Batu Karas). 2.3m 13s groundswell from the S with a 0.8m 20s long period groundswell from the SW. 2 swells combining to make bigger set waves.
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 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 12 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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