Surf Forecasts:
Right and Left Side surf forecast from 28 Aug 2026:
- Best quality surf: Monday 31 Aug, 10PM (local time) - 4.5ft (1.3m), 10s period, W swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 1AM (local time) - 10ft (3.0m), 10s period, W swell with 1,935 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 10PM (local time) - 4.5ft (1.3m), 10s period with W swell.
Best Forecast Surf Conditions for Right and Left Side this week:
The surf forecast for Right and Left Side over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 10PM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.4m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Right and Left Side in the next 16 days are 3.0m 10s and forecast to arrive on Friday (Sep 04) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Thursday (Sep 03) at 10PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 31st Aug) | 4.5ft (1.3m) 10s |
| Best Surf | 10PM (Mon 31st Aug) | 4.5ft (1.3m) 10s |
| Most Powerful | 1AM (Fri 4th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's look at what's coming for Right and Left Side.
First week is a bit of a bust. Nothing worth paddling for until the very end of the weekend. We've got a few days of poor to marginal conditions with onshore wind gumming things up. Water temp is 85°F, dead average for this time of year.
The first real chance is Tuesday afternoon (September 1st). We'll see a clean 5ft swell out of the west with a 9-second period, and cross-offshore wind. Wave energy is moderate (447), and it'll be clean, but the tide could be a factor.
The absolute standout is Wednesday, September 9th. Right and Left Side is an exposed reef that loves northerly swell, and we're getting a solid west-northwest pulse. Morning brings a clean 6ft swell with offshore wind, giving us real shape. Then the afternoon goes up a notch with a clean 7ft swell and gentle offshore wind – excellent conditions. The wave energy is strong (1041), and the period is a long 11 seconds, meaning real groundswell power. This one is for the experts; beginners will find it too big. Crowds can stack up here, so get out early.
Before that, Tuesday morning, September 8th offers a clean 5ft westerly swell as a warm-up. Not the main event, but the cross-offshore wind will keep it tidy.
Then the session drops off a cliff. Thursday (September 10th) turns messy, and from Friday (September 11th) right through to Sunday the 13th, we hit a flat spell with tiny 1ft swells and barely any energy. A proper lull.
Bottom line: if you've got one day to hit it, make it Wednesday, September 9th. That's the one.
- Rusty
Short Range ForecastHeavy rain (total 34mm), heaviest during Mon morning. Warm (max 28°C on Sat morning, min 26°C on Sun afternoon). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 33mm), heaviest during Tue night. Warm (max 29°C on Tue morning, min 27°C on Tue night). Winds increasing (light winds from the ENE on Tue afternoon, strong winds from the SSW by Wed night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | ENE 12 | ENE 11 | NW 8 | WNW 8 | W 8 | W 8 | W 7 | W 10 | W 9 | WNW 9 | W 9 | WNW 10 | W 9 | W 9 | W 9 | NE 8 | WNW 12 | W 10 | W 10 | W 10 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 90 | 82 | 67 | 46 | 78 | 76 | 82 | 268 | 340 | 259 | 399 | 370 | 484 | 538 | 649 | 18 | 583 | 1935 | 1514 | 1397 | 1334 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 9:00PM0.88m | 8:35AM0.85m | 9:20PM0.89m | 9:29AM0.83m | 9:42PM0.89m | 10:27AM0.81m | 10:06PM0.89m | 11:32AM0.79m | 10:34PM0.89m | 12:49PM0.76m | 11:08PM0.88m | 2:25PM0.75m | 11:51PM0.87m | ||||||||
Low Tide | 2:24PM0.24m | 2:55AM0.45m | 2:58PM0.30m | 3:34AM0.38m | 3:33PM0.38m | 4:15AM0.31m | 4:10PM0.46m | 5:00AM0.25m | 4:48PM0.54m | 5:51AM0.21m | 5:32PM0.62m | 6:50AM0.18m | 6:28PM0.68m | ||||||||
 | |  | | |  | | | |  | | | |  | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — |
mm | 6 | 3 | 3 | 1 | 3 | 6 | 7 | 4 | 1 | — | 1 | 11 | 6 | — | 2 | 4 | 3 | 6 | 2 | 2 | 2 |
Temp °C | 28 | 28 | 28 | 28 | 26 | 26 | 27 | 28 | 27 | 29 | 29 | 27 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 30 | 30 | 31 | 30 | 27 | 26 | 30 | 31 | 31 | 31 | 32 | 29 | 30 | 29 | 25 | 24 | 26 | 27 | 28 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 8 | W 8 | W 8 | W 7 | W 10 | W 9 | WNW 9 | W 9 | WNW 10 | W 9 | S 8 | S 7 | NE 8 | WNW 12 | SE 9 | SSE 8 | W 10 | W 10 |
| kJ | 61 | 79 | 54 | 60 | 78 | 76 | 82 | 268 | 340 | 259 | 399 | 370 | 484 | 93 | 108 | 18 | 583 | 20 | 6 | 1397 | 1334 |
Swell 2 Height (m) Direction Period (s) | ENE 12 | ENE 11 | NE 11 | WNW 8 | ENE 10 | WNW 9 | WNW 9 | NE 11 | ENE 10 | SW 8 | NE 10 | SW 9 | ENE 9 | NNE 5 | WNW 13 | SSW 10 | NE 9 | ENE 9 | ESE 9 | SE 8 | ESE 10 |
| kJ | 90 | 82 | 57 | 46 | 43 | 31 | 58 | 29 | 42 | 136 | 48 | 176 | 35 | 17 | 70 | 34 | 30 | 8 | 8 | 10 | 35 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | NW 9 | ENE 11 | WNW 8 | ENE 10 | NE 10 | SE 9 | SE 9 | NE 11 | SE 9 | NE 10 | SSE 9 | S 10 | NE 9 | ESE 10 | S 10 | E 9 | NE 11 | SE 11 | SSE 7 |
| kJ | 14 | 15 | 21 | 44 | 26 | 39 | 27 | 23 | 22 | 56 | 13 | 47 | 25 | 74 | 22 | 9 | 8 | 2 | 5 | 19 | 5 |
Wind waves Height (m) Direction Period (s) | NW 4 | NNW 4 | NW 8 | N 4 | N 4 | NW 4 | N 4 | — | — | — | — | — | N 4 | W 9 | W 9 | WSW 9 | WSW 8 | W 10 | W 10 | S 6 | — |
| kJ | 16 | 10 | 67 | 11 | 9 | 4 | 1 | — | — | — | — | — | 9 | 538 | 649 | 1106 | 878 | 1935 | 1514 | 38 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1835 | 1835 | 1835 | 1835 | 11 | 11 | 11 | 11 | 0 | 14 | 0 | 2068 | 2068 | 2055 | 2055 | 1874 | 2068 | 1874 | 1907 | 230 | 230 |
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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