Surf Forecasts:
Right and Left Side surf forecast from 7 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 1PM (local time) - 11ft (3.5m), 13s period, WNW swell with 3,912 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 3.5m 13s and forecast to arrive on Wednesday (Aug 12) at 1PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 10s period and expected on Saturday (Aug 08) at 1PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 12th Aug) | 11ft (3.5m) 13s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright folks, Rusty here. Digging into this stretch. Only one break is lighting up the board across the whole 16 days: Right and Left Side, a reef break that’s exposed to the north. This wave is for advanced surfers only, and it’s inconsistent, so you need patience and skill.
Water temp is about 85°F, which is right on the money for this time of year – nothing weird.
The first days are a washout. Friday the 7th through to the morning of Monday the 17th are a total bust. The wind is a mess – cross-shore and cross-onshore, often fresh at 15 to 22 mph, turning the ocean into lumpy, cross-chop chaos. The swell is there, but it’s all wind-affected junk. Wave energy is moderate to strong, but it doesn’t matter when it’s a mess. A 8ft, 13-second pulse on Tuesday the 11th (energy of 2170) is just a big, blown-out lump. No go.
Now, the real story changes on Tuesday the 18th of August. That morning we get a glassy, clean setup from the southeast at just 3 mph. The swell is 6ft from the WNW with a 10-second period – moderate energy at 646. The afternoon is even better: flat calm, glassy, with the swell dropping a touch to 5ft but still a solid 10-second period (energy 531). This is your standout window. The forecast says “expect very good surf conditions,” and for a reef break, that offshore/northwest direction and glassy wind is gold. The waves will have shape, and the longer gaps between sets will make paddling out easier. Just know that crowds are possible here – it’s a break that can get busy.
Wednesday the 19th is a step down – wind picks up onshore, and the swell drops to 5ft. Thursday the 20th afternoon and Friday the 21st offer a bit of hope with light winds and clean conditions, but the swell is only 3 to 4ft, so it’s small. Good for a longboard, but not the main event.
Saturday the 22nd looks like a windy mess again, with a strong breeze from the south at 25 mph. Not worth it.
Best bet: get out on Tuesday the 18th of August. Both morning and afternoon sessions are clean, glassy, and have a decent 5-6ft WNW swell. That’s the pick of the 16 days.
Stay safe out there.
Rusty
Short Range ForecastHeavy rain (total 27mm), heaviest during Mon morning. Warm (max 29°C on Sun morning, min 27°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Tue night. Warm (max 29°C on Thu morning, min 27°C on Mon afternoon). Mainly fresh winds. | |||||||||||||||||||
Fri 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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) | NW 12 | W 10 | W 10 | NW 12 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 13 | W 13 | W 11 | WNW 12 | W 12 | W 11 | W 11 | W 11 | W 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 435 | 830 | 938 | 207 | 957 | 1230 | 1268 | 1152 | 1024 | 910 | 832 | 2149 | 2141 | 1730 | 3376 | 3071 | 1980 | 1639 | 1520 | 1081 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 4:04PM0.73m | 1:21AM0.89m | 5:38PM0.78m | 2:19AM0.89m | 6:40PM0.83m | 3:28AM0.89m | 7:26PM0.87m | 4:39AM0.91m | 8:03PM0.90m | 5:47AM0.92m | 8:36PM0.91m | 6:51AM0.92m | 9:07PM0.92m | |||||||
Low Tide | 7:41PM0.68m | 9:30AM0.13m | 9:14PM0.73m | 10:34AM0.07m | 10:45PM0.74m | 11:34AM0.03m | 11:57PM0.72m | 12:29PM0.00m | 00:55AM0.68m | 1:19PM0.01m | 1:47AM0.62m | 2:05PM0.06m | 2:35AM0.56m | |||||||
 |  | | | |  | | | | | | | | | |  | | | | | |
 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:44 | — |
mm | 2 | 4 | 2 | 2 | 2 | — | 1 | 6 | 8 | 2 | 7 | 2 | 2 | 14 | 2 | — | 3 | — | — | 1 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 |
Feels °C | 29 | 30 | 29 | 29 | 30 | 30 | 28 | 30 | 28 | 26 | 28 | 27 | 27 | 28 | 28 | 28 | 30 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 12 | NW 11 | NW 12 | ENE 13 | NE 12 | NE 12 | NE 11 | NW 12 | NW 13 | NW 14 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | SE 10 | SE 10 | SE 11 |
| kJ | 435 | 202 | 147 | 207 | 229 | 147 | 114 | 64 | 248 | 444 | 589 | 19 | 18 | 39 | 36 | 36 | 40 | 38 | 53 | 56 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | NW 12 | NW 11 | SE 9 | SE 9 | NE 11 | NE 11 | NE 11 | ENE 11 | ENE 10 | NNE 9 | NNE 9 | NNE 11 | NE 10 | N 8 | N 8 | NNE 11 |
| kJ | 69 | 94 | 95 | 72 | 137 | 19 | 14 | 14 | 31 | 19 | 29 | 11 | 10 | 8 | 8 | 11 | 4 | 11 | 10 | 39 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SE 9 | ENE 14 | NE 14 | SE 10 | SE 10 | NW 11 | SE 8 | SE 9 | SE 9 | SE 10 | NNE 10 | NNE 10 | NE 12 | NE 12 | E 9 | E 11 | NE 11 | NE 11 | E 11 |
| kJ | 28 | 14 | 78 | 96 | 17 | 15 | 19 | 3 | 13 | 13 | 15 | 10 | 10 | 6 | 5 | 2 | 2 | 5 | 5 | 2 |
Wind waves Height (m) Direction Period (s) | W 9 | W 10 | W 10 | WSW 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 13 | W 13 | W 11 | WNW 12 | W 12 | W 11 | W 11 | W 11 | W 10 |
| kJ | 742 | 830 | 938 | 939 | 957 | 1230 | 1268 | 1152 | 1024 | 910 | 832 | 2149 | 2141 | 1730 | 3376 | 3071 | 1980 | 1639 | 1520 | 1081 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1863 | 1835 | 1835 | 1906 | 1835 | 1835 | 1904 | 1865 | 1835 | 1863 | 1835 | 1835 | 1863 | 1835 | 1835 | 1863 | 1835 | 1835 | 1904 | 1858 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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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.
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