Surf Forecasts:
Right and Left Side surf forecast from 9 Sep 2026:
- Best quality surf: Thursday 10 Sep, 4AM (local time) - 3ft (0.9m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 4PM (local time) - 5ft (1.5m), 13s period, ENE swell with 721 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 4AM (local time) - 3ft (0.9m), 9s period with WNW 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 Thursday (Sep 10) at 4AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.4m and 15s. Another secondary swell of 0.8m and 9s is also forecast. 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 1.5m 13s and forecast to arrive on Wednesday (Sep 16) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 8s period and expected on Tuesday (Sep 15) at 10AM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 10th Sep) | 3ft (0.9m) 9s |
| Best Surf | 4AM (Thu 10th Sep) | 3ft (0.9m) 9s |
| Most Powerful | 4PM (Wed 16th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Right and Left Side is a reef break that doesn’t fire off very often, and it’s inconsistent, so when it does come to life you gotta be on it. The water temp is 85°, which is pretty average for this time of year. The ideal swell direction is north, but the first week is mostly tiny, weak easterly swell. The best you’ll see in that early stretch is small but clean waves on Thursday the 10th and Friday the 11th, with the swell only 2ft to 2ft from the east and a very long 14-second period. Winds are light and cross-off or clean, so the surface will be smooth, but honestly, it’s ankle-to-knee high. Not worth suiting up for unless you’re just messing around.
We get a whole lot of nothing worth chasing until the middle of the second week. There’s a bump in energy on the 15th with combined swell energy hitting 366 (moderate), but the wind turns cross-onshore and sloppy, ruining the fun. Then from the 16th into the 17th, the swell size picks up but the wind is onshore and strong – 25 mph from the WNW on the 17th morning – so it’s a total wind-blown mess. That’s kite-surfing conditions, not for your longboard.
The real standout arrives on Saturday the 19th afternoon and carries into the 20th. On Saturday afternoon, the swell hits 7ft from the west with a 12-second period, and combined energy rockets to 1213 (strong). Winds are light cross-off from the SSW at 6 mph. That is clean, powerful, heavy reef break. This is for experienced surfers only – 7ft is too big for beginners, and the reef bottom doesn’t forgive mistakes. Sunday the 20th keeps the energy high at 1103 to 1163 with 6ft from the west-northwest, period building to 14 seconds on the afternoon, and still light cross-off wind from the east-northeast. The water stays glassy clean. These two days are your best shot, but know that this break is rare and inconsistent, so take it while you can. The direction is west-northwest to west, not the ideal north, but the quality of the swell and the glassy wind make it worthwhile. Crowds can show up here. After that, the week fades into smaller, onshore junk.
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Wed morning. Warm (max 29°C on Wed morning, min 27°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 29°C on Sat morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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) | WNW 10 | NW 9 | WNW 9 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 10 | NE 9 | ENE 13 | ENE 13 | ENE 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 163 | 198 | 127 | 98 | 94 | 144 | 132 | 184 | 198 | 173 | 173 | 282 | 215 | 198 | 192 | 215 | 225 | 115 | 362 | 181 | 233 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on |
High Tide | 7:18PM0.89m | 6:01AM0.87m | 7:46PM0.90m | 7:04AM0.88m | 8:11PM0.90m | 8:02AM0.88m | 8:35PM0.90m | 8:58AM0.87m | 8:59PM0.90m | 9:53AM0.85m | 9:23PM0.88m | 10:48AM0.81m | 9:47PM0.86m | ||||||||
Low Tide | 12:11PM0.13m | 00:47AM0.57m | 12:58PM0.17m | 1:31AM0.48m | 1:42PM0.23m | 2:12AM0.40m | 2:22PM0.31m | 2:52AM0.33m | 2:59PM0.39m | 3:31AM0.28m | 3:35PM0.47m | 4:10AM0.24m | 4:10PM0.54m | ||||||||
 | |  |  |  |  | | | | | |  | | | | | | | | |  | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 6:27 | — | — | 6:25 | — | — | 6:24 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 29 | 28 |
Feels °C | 30 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 31 | 32 | 32 | 30 | 31 | 31 | 30 | 31 | 31 | 31 | 32 | 33 | 31 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | NW 9 | WNW 9 | WNW 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 10 | NE 9 | ENE 13 | NE 9 | NE 8 |
| kJ | 163 | 198 | 127 | 82 | 75 | 84 | 59 | 61 | 198 | 173 | 173 | 282 | 215 | 198 | 192 | 215 | 225 | 115 | 362 | 79 | 84 |
Swell 2 Height (m) Direction Period (s) | NNE 12 | ENE 9 | ENE 15 | ENE 8 | WNW 8 | WNW 8 | E 14 | E 14 | ENE 8 | ENE 9 | ENE 9 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | ENE 14 |
| kJ | 49 | 28 | 72 | 78 | 72 | 51 | 132 | 184 | 61 | 59 | 43 | 17 | 34 | 45 | 59 | 59 | 58 | 56 | 75 | 75 | 233 |
Swell 3 Height (m) Direction Period (s) | ENE 9 | NNE 12 | NNE 12 | E 14 | E 14 | E 14 | W 8 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | NNE 8 | NNE 8 | ENE 16 | WSW 7 | E 11 | W 7 | ENE 13 | SSE 8 |
| kJ | 28 | 47 | 45 | 98 | 94 | 144 | 29 | 17 | 16 | 16 | 16 | 15 | 15 | 21 | 23 | 24 | 4 | 64 | 4 | 181 | 69 |
Wind waves Height (m) Direction Period (s) | N 3 | NE 9 | ENE 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 |
| kJ | 5 | 79 | 67 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1958 | 2064 | 2064 | 0 | 0 | 0 | 1835 | 0 | 0 | 0 | 0 | 0 | 1835 | 0 | 0 | 0 | 0 | 0 | 1835 | 11 | 11 |
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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