Surf Forecasts:
Right and Left Side surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 4AM (local time) - 3.5ft (1.0m), 11s period, N swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 4PM (local time) - 4.5ft (1.3m), 11s period, N swell with 396 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 4AM (local time) - 3.5ft (1.0m), 11s period with N 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 24) at 4AM. The primary swell is predicted to be 1.0m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Right and Left Side in the next 16 days are 1.3m 11s and forecast to arrive on Sunday (Aug 23) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 10s period and expected on Thursday (Aug 27) at 1PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 24th Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 4AM (Mon 24th Aug) | 3.5ft (1.0m) 11s |
| Most Powerful | 4PM (Sun 23rd Aug) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Right, Rusty here, and I’m calling it like I see it for Right and Left Side. This reef’s inconsistent and ain’t for beginners.
August is starting off rough. Saturday the 22nd we got a stormy sky, a 3ft NE swell at 9 seconds, but the wind is ripping cross-shore and it’s choppy. Wave energy’s weak (174) and the surf is crap. Not a chance. Sunday the 23rd bumps up to 4ft from the north, period goes to 10 seconds, and the wind turns cross-offshore so it’s looking clean. Energy jumps to moderate (331) but the quality’s still poor.
Monday the 24th drops to 3ft from the NNW, 11-second period, with a gentle cross-shore breeze. Marginal at best. From Tuesday the 25th to Saturday the 29th it’s flat as a pancake. Swell between 1ft and 2ft, periods all over, and the wind stays strong and cross-shore, lumpy. Energy falls from moderate (242) down to nearly nothing (38). That’s a long dry gap.
Sunday, August 30, a big pulse hits – 10ft from the west, period of 11 seconds, but the wind is cross-shore and the surf is poor. That size sticks around through Monday the 31st (10ft, 10 seconds, still cross-shore or cross-on, choppy). The combined energy is massive (up to 2051), but the quality ain’t there for paddling. Kite surfers might be stoked, though. Tuesday, September 1, drops to 8ft from the west, 10 seconds – still a big west swell but messy.
Wednesday and Thursday the 2nd and 3rd see the swell fade and winds stay strong. Then Friday, September 4 – that’s the standout. Swell builds to 12ft from the west, period 12 seconds, and the wind goes clean cross-offshore. Energy is huge (3632). That Friday morning and afternoon are clean, solid, and the best of the whole forecast. This is expert-only territory. Crowds are possible. Water temp’s about average for this time of year.
Saturday the 5th holds at 10ft from the west, 12-second period, but the morning wind is cross-shore, so it’s less clean. By the afternoon it’s cross-off again, dropping to 8ft. Cleaner but fading. Sunday the 6th drops to 6ft, 11 seconds, cross-off wind – clean but marginal.
So here’s the bottom line: the first week is dead. Big gap until late August, but the wind messes it up. Circle Friday, September 4 – 12ft west groundswell, 12-second period, clean offshore wind. That’s the one for the experienced crew. The rest is a waiting game.
Rusty.
Short Range ForecastHeavy rain (total 49mm), heaviest during Sun night. Warm (max 29°C on Fri night, min 25°C on Mon morning). Winds increasing (light winds from the WSW on Fri night, fresh winds from the SW by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 58mm), heaviest during Wed night. Warm (max 28°C on Mon night, min 27°C on Mon night). Mainly fresh winds. | ||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | E 10 | NE 9 | NE 9 | NNE 10 | N 10 | N 11 | N 11 | NNW 11 | NNW 11 | NNW 11 | ENE 13 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | ENE 14 | ENE 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 183 | 152 | 138 | 179 | 290 | 396 | 223 | 194 | 210 | 173 | 139 | 128 | 126 | 126 | 97 | 55 | 41 | 82 | 69 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 00:52AM0.79m | 5:59PM0.73m | 1:47AM0.78m | 6:41PM0.76m | 2:57AM0.78m | 7:12PM0.79m | 4:06AM0.79m | 7:38PM0.81m | 5:07AM0.81m | 8:01PM0.83m | 6:01AM0.83m | 8:21PM0.85m | |||||||
Low Tide | 9:20AM0.25m | 9:03PM0.71m | 10:19AM0.22m | 10:36PM0.71m | 11:11AM0.20m | 11:37PM0.69m | 11:57AM0.17m | 00:23AM0.66m | 12:37PM0.16m | 1:03AM0.62m | 1:14PM0.17m | 1:40AM0.58m | |||||||
 |  | |  | |  |  |  | | | | | | | | | | | | |
 | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:36 | — |
mm | — | 2 | 3 | 12 | 3 | — | 20 | 9 | — | 3 | 5 | 6 | 2 | 7 | 6 | 14 | 9 | 6 | 2 |
Temp °C | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 26 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 |
Feels °C | 33 | 31 | 30 | 29 | 27 | 29 | 30 | 28 | 29 | 29 | 28 | 28 | 29 | 26 | 26 | 26 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | E 10 | SSE 9 | S 9 | SSE 9 | N 10 | N 11 | SW 8 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | SSE 8 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | ENE 14 | ENE 13 |
| kJ | 183 | 238 | 286 | 199 | 290 | 396 | 448 | 194 | 210 | 173 | 103 | 85 | 126 | 126 | 97 | 55 | 41 | 82 | 69 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | NE 9 | NE 9 | NNE 10 | ENE 12 | ENE 12 | N 11 | SE 10 | SSE 8 | SSE 7 | ENE 13 | NW 11 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | NW 11 | NW 11 |
| kJ | 58 | 152 | 138 | 179 | 30 | 29 | 223 | 47 | 75 | 54 | 139 | 128 | 93 | 82 | 56 | 53 | 25 | 42 | 18 |
Swell 3 Height (m) Direction Period (s) | NNE 6 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | W 7 | SSE 9 | ENE 12 | SE 9 | SE 9 | SSE 9 | ENE 13 | S 10 | NE 8 | SE 9 | NE 17 | ENE 15 | SSE 10 | NNE 10 |
| kJ | 37 | 22 | 26 | 13 | 11 | 4 | 127 | 46 | 41 | 38 | 29 | 98 | 32 | 3 | 13 | 11 | 21 | 10 | 10 |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 7 | WSW 7 | SSW 8 | SSW 8 | SSW 8 | — | SSW 9 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 9 | WSW 10 | WSW 10 | WSW 10 |
| kJ | 40 | 21 | 10 | 307 | 699 | 665 | — | 528 | 421 | 481 | 373 | 261 | 519 | 650 | 605 | 2140 | 3776 | 3663 | 3027 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1995 | 1995 | 2425 | 2386 | 1958 | 1958 | 1835 | 3 | 1958 | 230 | 2055 | 1905 | 230 | 1835 | 1863 | 1835 | 1835 | 2065 | 1835 |
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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