
Surf Forecasts:
Gerpuk Bay - Inside Gerpuk surf forecast from 23 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 5PM (local time) - 8ft (2.5m), 9s period, SE swell with 1,185 kJ wave energy.
Best Forecast Surf Conditions for Gerpuk Bay - Inside Gerpuk this week:
The most powerful waves expected at Gerpuk Bay - Inside Gerpuk in the next 16 days are 2.5m 9s and forecast to arrive on Sunday (Jul 26) at 5PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Sun 26th Jul) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Gerpuk Bay - Inside Gerpuk over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you – this forecast is a tough one. The wind is just not playing ball for the next couple of weeks, which means we’re going to see a lot of chop and lumpy conditions. The swell is coming in, but it’s a real fight to find a window that’s clean.
We’re looking at Gerpuk Bay - Inside Gerpuk (Grupuk) for our options. It’s a very consistent reef break, so it’s always trying to fire, but the wind is the enemy here. The water temp is sitting at a warm 80°, which is bang on average for this time of year, so no surprises there.
The whole first week is a write-off. From Thursday afternoon, the 23rd of July, right through to the end of the month, the wind is hammering it from the SE or ESE at 15 to 25 mph, either straight onshore or cross-on. That’s just no good. We’ve got a solid SSW swell running, with faces around 4 ft, but the combined energy is moderate to strong, and it’s all being wrecked by the wind. The surf is just poor.
There’s a little glimmer on the morning of Friday, the 31st of July. The wind drops to a moderate 12 mph SE breeze, straight onshore, and the swell is a clean 5 ft from the SSW with a long 17-second period. The combined energy is strong. It’s only a “marginal” call, but it’s the first time the wind isn’t howling. It’s still onshore, so it won’t be glassy, but it might be the most rideable we get.
The first week of August looks like it’s bringing some serious size, but without the wind to match. Swells are hitting 7 ft to 8 ft from the SSW, with periods of 15 to 17 seconds, and the combined energy is getting very strong. That’s proper groundswell, and it would be incredible for a point or reef, but it’s all coming with onshore and cross-on winds from the SE at 12 to 18 mph. The report keeps saying “poor surf conditions” or “marginal,” and it’s a real shame. The morning of Tuesday, the 4th of August, has a 8 ft SSW swell with a 17-second period and a moderate 12 mph onshore wind, giving it a 1/10 score. That’s the best of the bunch, but it’s still not good.
If you’re a kite surfer, the setup from the 25th of July onwards looks pretty interesting. But for a paddle surfer, there’s just no standout day. The closest thing to a recommendation is the morning of the 31st of July, but even then, it’s onshore. You’d have to be pretty keen to paddle out.
Stay patient, the surf will come right eventually.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 23°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sun afternoon, min 24°C on Sun night). Mainly strong winds. | |||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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) | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
Wave Graph | ||||||||||||||||||||
630 | 342 | 421 | 404 | 575 | 706 | 602 | 660 | 823 | 1185 | 719 | 493 | 625 | 306 | 335 | 381 | 372 | 805 | 899 | 779 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 4:09PM1.53m | 4:33AM2.11m | 6:07PM1.40m | 5:55AM2.02m | 8:35PM1.46m | 7:27AM2.05m | 9:33PM1.61m | 8:34AM2.17m | 10:06PM1.77m | 9:22AM2.31m | 10:34PM1.93m | 10:01AM2.46m | 11:00PM2.09m | |||||||
Low Tide | 9:29PM1.07m | 12:07PM1.00m | 10:26PM1.24m | 1:54PM0.91m | 00:30AM1.33m | 3:00PM0.75m | 2:12AM1.26m | 3:42PM0.59m | 3:11AM1.13m | 4:14PM0.44m | 3:53AM0.98m | 4:43PM0.31m | 4:29AM0.85m | |||||||
— | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:28 | — | — | |
6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:12 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 22 | 21 | 23 | 23 | 22 | 24 | 23 | 22 | 24 | 22 | 22 | 23 | 22 | 23 | 24 | 24 | 23 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 16 | SSW 15 | SSW 14 | SSE 9 | SSW 13 | SSW 13 | SSE 9 | SSW 12 | SW 17 | SSE 8 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 |
630 | 342 | 421 | 346 | 575 | 706 | 602 | 660 | 282 | 222 | 211 | 83 | 147 | 181 | 318 | 318 | 372 | 805 | 899 | 779 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | SSW 10 | SSW 18 | SSW 17 | S 7 | WSW 18 | SW 16 | SSW 14 | SW 15 | SW 15 | SSW 13 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 17 | SW 24 | SSW 23 | SSW 21 |
12 | 107 | 178 | 404 | 103 | 30 | 41 | 362 | 55 | 33 | 198 | 114 | 85 | 130 | 72 | 72 | 166 | 22 | 53 | 178 | |
Swell 3 Height (m) Direction Period (s) | — | SSW 19 | SW 16 | SW 16 | SSW 12 | — | — | SW 16 | SW 15 | SW 19 | SW 13 | SW 18 | SSW 12 | SSW 16 | — | — | S 26 | — | — | — |
— | 37 | 40 | 40 | 187 | — | — | 40 | 55 | 15 | 28 | 81 | 57 | 179 | — | — | 13 | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 7 | SE 6 | SE 6 | SE 8 | SSE 8 | ESE 8 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 6 |
108 | 120 | 198 | 181 | 80 | 335 | 425 | 217 | 823 | 1185 | 719 | 493 | 625 | 306 | 335 | 381 | 309 | 260 | 233 | 126 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 43 | 30 | 43 | 43 | 11 | 42 | 42 | 12 | 42 | 43 | 11 | 42 | 42 | 12 | 42 | 42 | 30 | 42 | 42 | 12 |
Best forecast wave conditions in South Coast of Lombok | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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Information about the Gerpuk Bay - Inside Gerpuk Surf forecast
The above surf forecast table for Gerpuk Bay - Inside Gerpuk provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gerpuk Bay - Inside Gerpuk can be found by selecting the local surf guide option on the grey menu. Our Gerpuk Bay - Inside Gerpuk 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 (Gerpuk Bay - Inside Gerpuk) 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 Gerpuk Bay - Inside Gerpuk 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.
Grupuk is 26 km (16 miles) from the city of Praya. If you plan a holiday in South Coast of Lombok, look for hotels and other accommodation in Praya. Praya has rooms for a wide range of budgets as well as car hire and transport links.










