Surf Forecasts:
Right and Left Side surf forecast from 13 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 7PM (local time) - 7ft (2.1m), 8s period, W swell with 616 kJ wave energy.
Best Forecast Surf Conditions for Right and Left Side this week:
The most powerful waves expected at Right and Left Side in the next 16 days are 2.1m 8s and forecast to arrive on Sunday (Aug 16) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 11s period and expected on Friday (Aug 14) at 4AM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sun 16th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright, Rusty here, let's paddle out and take a look at what's on offer for *Right and Left Side*.
Alright, the outlook for *Right and Left Side* is a real mixed bag. We've got a long stretch of nothing to write home about, but the second week holds a few interesting moments.
The water temp is sitting at 85°, which is about normal for the time of year, so leave the steamer at home.
We kick off on Thursday the 13th of August, but honestly, we might as well not bother. From that day all the way through to Thursday the 20th of August, it’s a write-off. Winds are onshore or cross-shore, the choppiness is relentless, and the wave energy is moderate at best, often under 500. With swell around 5ft to 7ft, but periods short (8-10 seconds), it's just not offering any quality. It's a tough stretch, so don't waste your time.
The turnaround comes on Friday the 21st of August. That's the standout. We see a whole new swell arrive from the ENE, building to 8ft with a solid 12-second period. The wind goes glassy in the morning, and the energy jumps to a massive 2114. This is a proper strong groundswell, but that long period at a reef break like *Right and Left Side* is exactly what you want – it should wrap in with power and shape. Because it’s over 8ft, this one is for experienced surfers only, no beginners out there. The crowds are listed as a possibility.
Saturday the 22nd still has decent size, 7ft from the N, but the wind swings to a cross-off. It'll be cleaner than the first week, but the energy is dropping. The following days through to Monday the 25th, the swell drops in size, but the period stays long. The problem is the wind turns onshore again, creating lumpy, choppy conditions that ruin it.
The last few days of the window have potential, but they're further out. Thursday the 27th of August afternoon looks promising, with 8ft from the W, glassy conditions, and energy just under 1300. That’s still for the experienced crew. Friday the 28th of August looks even bigger, hitting 10ft from the W in the afternoon, also with clean wind. That's big, powerful swell, and only for experts. The period is shorter, at 8 seconds, so it might be a bit more unruly than the 21st.
If I had to pick, Friday the 21st of August is the best bet for a clean, powerful session, but it's a long way off, so the forecast might shift. The Thursday the 27th and Friday the 28th are also worth watching, but again, it's a long-range call.
Stay safe out there.
Rusty.
Short Range ForecastHeavy rain (total 38mm), heaviest during Sat night. Warm (max 29°C on Fri morning, min 27°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Mon night. Warm (max 29°C on Mon morning, min 27°C on Mon night). Winds increasing (light winds from the WNW on Mon night, fresh winds from the N by Wed afternoon). | ||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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) | WNW 10 | W 9 | W 9 | W 9 | W 8 | W 8 | W 9 | W 8 | W 8 | W 9 | W 9 | W 10 | W 9 | W 9 | W 9 | WNW 9 | W 9 | W 9 | W 9 |
Wave Graph | |||||||||||||||||||
497 | 440 | 516 | 440 | 367 | 367 | 432 | 476 | 596 | 575 | 381 | 529 | 461 | 440 | 459 | 283 | 235 | 235 | 246 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:51AM0.91m | 9:35PM0.92m | 8:50AM0.88m | 10:02PM0.92m | 9:49AM0.84m | 10:27PM0.91m | 10:51AM0.79m | 10:52PM0.89m | 11:57AM0.74m | 11:17PM0.87m | 1:14PM0.71m | 11:43PM0.84m | |||||||
Low Tide | 2:35AM0.56m | 2:47PM0.13m | 3:22AM0.49m | 3:27PM0.22m | 4:08AM0.42m | 4:04PM0.33m | 4:54AM0.36m | 4:38PM0.43m | 5:41AM0.32m | 5:12PM0.52m | 6:29AM0.29m | 5:46PM0.59m | |||||||
— | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | — | 6:43 | — | — | 6:43 | — | — | 6:42 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | |
mm | — | — | — | — | 2 | 4 | 18 | 10 | 4 | — | 3 | — | 4 | 4 | 1 | 2 | 1 | 1 | 2 |
Temp °C | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 28 |
Feels °C | 30 | 30 | 29 | 31 | 30 | 30 | 30 | 29 | 28 | 29 | 31 | 30 | 32 | 33 | 32 | 30 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | W 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | W 9 | W 10 | W 9 | W 9 | W 9 | WNW 9 | W 9 | W 9 | W 9 |
497 | 440 | 54 | 39 | 27 | 26 | 25 | 15 | 15 | 15 | 381 | 529 | 461 | 440 | 459 | 283 | 235 | 235 | 246 | |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | N 12 | N 11 | N 10 | NE 11 | NE 10 | ENE 9 | ENE 9 | E 9 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SE 9 | SE 9 |
56 | 55 | 25 | 36 | 17 | 18 | 16 | 8 | 8 | 6 | 14 | 14 | 13 | 20 | 19 | 31 | 30 | 19 | 22 | |
Swell 3 Height (m) Direction Period (s) | NE 11 | N 11 | NNE 11 | NE 12 | NE 11 | N 9 | E 9 | NE 10 | NE 12 | NNE 12 | NNE 10 | E 9 | E 9 | E 8 | S 8 | E 8 | E 9 | E 9 | E 9 |
5 | 9 | 12 | 22 | 19 | 7 | 6 | 4 | 6 | 13 | 9 | 13 | 13 | 13 | 12 | 13 | 14 | 14 | 6 | |
Wind waves Height (m) Direction Period (s) | — | WSW 4 | W 9 | W 9 | W 8 | W 8 | W 9 | W 8 | W 8 | W 9 | — | — | — | — | — | — | N 3 | N 4 | N 4 |
— | 8 | 516 | 440 | 367 | 367 | 432 | 476 | 596 | 575 | — | — | — | — | — | — | 5 | 10 | 33 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 16 | 2199 | 16 | 16 | 16 | 2064 | 2068 | 2064 | 2064 | 230 | 230 | 16 | 11 | 16 | 2064 | 1958 | 2064 | 2068 |
Best forecast wave conditions in Guam | |||||||||||||||||||
Best forecast wave conditions in Guam | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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Information about the Right and Left Side Surf forecast
The above surf forecast table for Right and Left Side provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Right and Left Side can be found by selecting the local surf guide option on the grey menu. Our Right and Left Side 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 (Right and Left Side) 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 Right and Left Side 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.
Right and Left Side is 1 km (1 miles) from Agana. If you plan a holiday in Guam, look for hotels and other accommodation in Agana. Agana has rooms for a wide range of budgets as well as car hire and transport links.











