Surf Forecasts:
Lagundri-The Machine surf forecast from 5 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 4PM (local time) - 5ft (1.6m), 15s period, SSW swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 10AM (local time) - 5ft (1.6m), 16s period, SW swell with 1,255 kJ wave energy.
- Next surfable swell (1★+): Monday 6 Jul, 7AM (local time) - 2.5ft (0.8m), 17s period with SW swell.
Best Forecast Surf Conditions for Lagundri-The Machine this week:
The surf forecast for Lagundri-The Machine over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jul 06) at 7AM. The primary swell is predicted to be 0.8m and 17s period with a secondary swell of 0.9m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Lagundri-The Machine in the next 16 days are 1.6m 16s and forecast to arrive on Friday (Jul 10) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 6th Jul) | 2.5ft (0.8m) 17s |
| Best Surf | 4PM (Wed 8th Jul) | 5ft (1.6m) 15s |
| Most Powerful | 10AM (Fri 10th Jul) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Lagundri-The Machine over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let's talk Lagundri-The-Machine. We've got a solid run of South-West groundswell heading our way, and this reef knows how to handle it. Those long-period lines at 16 seconds are a good sign for a spot like this. Water temp is right where it should be for July.
We're straight into it on Monday 6th July morning. Small at 2.6ft from the SW with a 16-second interval. Wind is glassy, combined energy is moderate (760), and the surface is clean. The afternoon turns onshore, so hit the early session.
Tuesday 7th July morning brings another clean window – 3.6ft, still that long SW swell, glassy wind, energy at 698.
Then Wednesday 8th July afternoon is a big step up. Swell jumps to 5.2ft from the SSW with a 15-second period, glassy wind, and the energy climbs to 1229 – that's strong. This is a proper session.
Things get a bit mixed through the middle of the week with onshore and cross winds, but the swell holds between 4.6ft and 5.2ft. Sunday 12th July afternoon offers a return to glassy conditions with a clean 3.3ft SSW swell (406 energy) – a good reset.
The real standouts are Monday 20th July. Both morning and afternoon dish up 5.9ft of SSW swell with a 14-second period, glassy wind, and strong energy readings of 1295 and 1322. Expect very good surf. And Tuesday 21st July morning might be the best of the lot: still 5.9ft, glassy, with energy hitting 1764 – very strong. That's expert territory on size, but the
Short Range ForecastHeavy rain (total 47mm), heaviest during Wed morning. Warm (max 29°C on Mon afternoon, min 23°C on Wed afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Warm (max 28°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SSW 12 | SSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 380 | 427 | 560 | 532 | 305 | 849 | 974 | 1087 | 947 | 1057 | 908 | 710 | 1255 | 1133 | 833 | 799 | 517 | 509 | 246 | 314 | 187 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | cross | cross-on | on | glassy | cross-off | cross | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | glassy | glassy |
High Tide | 9:31AM0.70m | 10:28PM0.59m | 10:09AM0.64m | 11:21PM0.61m | 10:56AM0.57m | 00:24AM0.63m | 12:00PM0.49m | 1:34AM0.67m | 1:26PM0.43m | 2:45AM0.72m | 2:59PM0.40m | 3:50AM0.78m | 4:15PM0.41m | ||||||||
Low Tide | 4:04PM0.11m | 4:01AM0.25m | 4:40PM0.12m | 5:07AM0.28m | 5:23PM0.13m | 6:36AM0.29m | 6:17PM0.13m | 8:22AM0.26m | 7:22PM0.13m | 9:52AM0.20m | 8:33PM0.12m | 10:58AM0.12m | 9:40PM0.09m | ||||||||
 |  |  | | | | |  |  | |  |  |  | | | | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — |
 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — |
mm | — | 2 | 8 | 1 | 2 | 10 | 16 | 1 | — | — | — | — | 1 | — | 4 | — | — | — | — | — | — |
Temp °C | 28 | 29 | 27 | 28 | 28 | 27 | 25 | 24 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 33 | 33 | 31 | 32 | 31 | 30 | 28 | 26 | 29 | 31 | 30 | 30 | 32 | 31 | 30 | 30 | 30 | 30 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | S 9 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SSW 12 | SSW 12 |
| kJ | 380 | 427 | 560 | 532 | 132 | 849 | 974 | 1087 | 947 | 1057 | 908 | 710 | 1255 | 1133 | 833 | 799 | 517 | 509 | 246 | 314 | 187 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | WNW 9 | S 12 | WNW 9 | SW 15 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | SW 18 | S 5 | S 8 | S 8 | S 7 | W 10 | W 11 | SW 12 | W 12 | WNW 12 |
| kJ | 253 | 94 | 169 | 103 | 305 | 78 | 76 | 76 | 78 | 92 | 90 | 375 | 8 | 52 | 33 | 27 | 53 | 66 | 118 | 69 | 106 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | WNW 9 | S 8 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | SSW 18 | WNW 8 | W 9 | S 10 | SSE 9 | W 10 | W 8 | W 11 | S 7 | S 8 | W 12 | S 7 | S 9 |
| kJ | 127 | 94 | 77 | 63 | 75 | 54 | 38 | 66 | 184 | 21 | 41 | 67 | 28 | 51 | 37 | 57 | 24 | 32 | 69 | 23 | 36 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SSE 5 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 13 | 0 | 0 | 1 | 167 | 64 | 0 | 0 | 13 | 64 | 13 | 64 | 64 | 13 | 64 | 64 | 13 | 64 | 0 | 0 |
Best forecast wave conditions in Nias | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Lagundri-The Machine Surf forecast
The above surf forecast table for Lagundri-The Machine provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lagundri-The Machine can be found by selecting the local surf guide option on the grey menu. Our Lagundri-The Machine 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 (Lagundri-The Machine) 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 Lagundri-The Machine 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.
Are you planning a holiday in Nias? If you are looking for accommodation near Lagundri-The Machine, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 91 km (57 miles) away.
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