
Surf Forecasts:
Mawi surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 8AM (local time) - 6ft (1.8m), 15s period, SW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 7ft (2.1m), 16s period, SW swell with 2,269 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8AM (local time) - 6ft (1.8m), 15s period with SW swell.
Best Forecast Surf Conditions for Mawi this week:
The surf forecast for Mawi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 8AM. The primary swell is predicted to be 1.8m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Mawi in the next 16 days are 2.1m 16s and forecast to arrive on Sunday (Sep 20) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Sep 15) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 15th Sep) | 6ft (1.8m) 15s |
| Best Surf | 8AM (Tue 15th Sep) | 6ft (1.8m) 15s |
| Most Powerful | 2PM (Sun 20th Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Mawi over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get into what’s on offer at Mawi for the next couple of weeks.
The setup is a long, drawn-out run of solid, long-period SW groundswell. The water temp is sitting at 79°, which is pretty much spot on for this time of year. We’ve got a consistent pulse of swell, but the wind is going to be a factor. It’s blowing from the SE, which puts us in a cross-off position. It keeps the face reasonably clean, but it’s not the dream offshore. This is a proper reef break for advanced surfers only.
The week starts on Monday, September 14th, with swell around 6 ft coming from the SW with a very long 16-second period. The combined wave energy is strong at 1877. A bit of a fresh breeze in the morning, but it’s manageable. Tuesday and Wednesday hold similar size and period, around 6 ft, with a moderate breeze. It’s not going to be a perfect mirror, but it’s rideable.
Thursday the 17th sees the swell bump up a touch to 7 ft and shift a bit more SSW, still with a solid 14-second period. The energy stays high.
Now, Friday the 18th is where things start to clean up nicely. The morning has a light breeze, dropping to just 6 mph, with 6 ft SSW swell. The guidance flags this as excellent for experienced surfers. The energy is still moderate to strong at 1057.
Saturday the 19th is similar, but the afternoon has some clouds and light winds, with 5 ft SW swell. The real standout in the first week is Sunday, September 20th. The morning kicks off with 7 ft SW swell, a 16-second period, and a light breeze. The energy jumps up to 2075. This is the best combo of size, period, and manageable wind in the first week. Crowds are listed as sometimes, so you might have some company, but for this quality, it’s worth it.
We roll into the next week with Monday the 21st still looking strong: 7 ft SW swell and light winds. Tuesday the 22nd drops off a bit in size and energy.
Then things get a bit more interesting. Wednesday the 23rd has a new pulse of 7 ft SSW swell with a 16-second period and a moderate breeze. Energy is back up to 2228.
The long-range standout is a cracker. Sunday, September 27th, the afternoon session is looking absolutely pumping. The swell jumps to a solid 10 ft from the SSW with an exceptional 20-second period. The wave energy is enormous at 8094. The wind is a gentle breeze. This is big, powerful, long-period groundswell. At 10 ft, this is strictly for experts only. The reef will handle that period well, but it’s going to be heavy. This is the one to circle on the calendar.
Monday the 28th holds similar 10 ft size but with a bit more wind and a slightly shorter 17-second period, still massive energy. It tapers off through Tuesday the 29th.
So, to sum it up: the first week is a solid, consistent run of good, clean waves for the experienced crew. The standout is Sunday, September 20th. But the real epic window is Sunday, September 27th afternoon. That’s a long-range call, so keep an eye on it, but the potential is huge.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 24°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Thu morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
1764 | 1764 | 1540 | 1540 | 1581 | 1474 | 1358 | 1340 | 1737 | 1690 | 1667 | 1349 | 1019 | 907 | 857 | 834 | 731 | 1087 | 2053 | 2241 | 2157 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:46AM2.56m | 11:53PM2.87m | 12:15PM2.41m | 00:19AM2.79m | 12:42PM2.22m | 00:44AM2.65m | 1:08PM2.01m | 1:09AM2.46m | 1:34PM1.78m | 1:35AM2.25m | 2:01PM1.56m | 2:05AM2.03m | 2:50PM1.34m | 2:57AM1.81m | |||||||
Low Tide | 5:41PM0.27m | 6:13AM0.13m | 6:06PM0.38m | 6:43AM0.24m | 6:29PM0.52m | 7:14AM0.41m | 6:50PM0.68m | 7:45AM0.62m | 7:08PM0.86m | 8:23AM0.85m | 7:20PM1.05m | 9:27AM1.06m | 7:00PM1.24m | ||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | |
— | 6:12 | — | — | 6:12 | — | — | 6:12 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 26 | 27 | 27 | 25 |
Feels °C | 26 | 27 | 25 | 26 | 27 | 25 | 28 | 27 | 25 | 27 | 28 | 26 | 27 | 28 | 27 | 28 | 29 | 28 | 29 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SW 16 |
1764 | 1764 | 1540 | 1540 | 1581 | 1474 | 1358 | 1340 | 1737 | 1690 | 1667 | 1349 | 1019 | 907 | 857 | 834 | 731 | 1087 | 2053 | 2241 | 2157 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 21 | W 16 | — | SE 6 | SSW 8 | — | SE 6 | SSW 21 | SW 20 | SW 18 | SW 19 | SW 13 | SE 6 | SE 6 | SSW 8 |
— | — | — | — | — | — | 45 | 5 | — | 32 | 32 | — | 20 | 45 | 99 | 208 | 343 | 400 | 22 | 39 | 25 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 21 | — | — | — | — | — | SW 22 | SW 21 | — | — | — | SE 6 | — | — | SSW 8 |
— | — | — | — | — | — | 45 | — | — | — | — | — | 18 | 18 | — | — | — | 21 | — | — | 25 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 6 | SE 6 | SE 5 | — | SE 6 | SE 5 | — | SE 6 | SE 5 | ESE 5 | SE 5 | SE 6 | — | ESE 6 | SE 6 |
113 | 118 | 52 | 67 | 96 | 53 | 50 | 61 | 53 | — | 45 | 31 | — | 29 | 13 | 20 | 16 | 33 | — | 71 | 32 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 34 | 34 | 32 | 34 | 34 | 33 | 32 | 34 | 32 | 34 | 34 | 0 | 0 | 0 | 0 | 60 | 0 | 0 | 0 | 34 | 32 |
Best forecast wave conditions in South Coast of Lombok | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Mawi Surf forecast
The above surf forecast table for Mawi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mawi can be found by selecting the local surf guide option on the grey menu. Our Mawi 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 (Mawi) 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 Mawi 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.
Mawi is 25 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.










