
Surf Forecasts:
Right and Left Side surf forecast from 10 Sep 2026:
- Best quality surf: Friday 11 Sep, 7AM (local time) - 2ft (0.6m), 14s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 1AM (local time) - 5.5ft (1.7m), 13s period, ENE swell with 880 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 7AM (local time) - 2ft (0.6m), 14s period with E 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 Friday (Sep 11) at 7AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.8m and 8s. 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 1.7m 13s and forecast to arrive on Thursday (Sep 17) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 7s period and expected on Thursday (Sep 17) at 7PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Fri 11th Sep) | 2ft (0.6m) 14s |
| Best Surf | 7AM (Fri 11th Sep) | 2ft (0.6m) 14s |
| Most Powerful | 1AM (Thu 17th Sep) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for this spot.
We’ve got a bit of a slow starter for Right and Left Side, a reef break that’s exposed to the north. This place is inconsistent, so don't expect magic every day. The water temp is about average for the time of year, nothing to write home about in terms of anomalies.
The first real chance to get the board wet comes Friday morning, September 11th. We’re looking at small 2ft easterly swell with a 14-second period—that’s a long-period groundswell, which is good for a reef setup like this. The wind is a clean cross-off from the NE at 9 mph, and the combined energy is moderate (237). It’s clean, but it’s small. Not a standout, but a window to get out there.
Saturday morning, September 12th, is similar: 2ft east swell, 13-second period, and light cross-off winds from the east at 6 mph. Energy is moderate (230). The afternoon is almost a carbon copy. Sunday morning, September 13th, sees a slight bump to 3ft from the ENE, with a 13-second period and light cross-off wind. The real highlight for the early run is Sunday afternoon, though. The wind swings to a light offshore from the ESE at 9 mph, and the swell is 3ft at 12 seconds. The energy is moderate (222), and it’s clean. For an inconsistent break, this is your best bet in the first few days.
Monday and Tuesday, September 14th and 15th, are a mixed bag. The swell picks up to 4ft by Tuesday morning, with a 13-second period and ENE direction. The combined energy jumps to 428 (moderate), and the wind is a light cross-off from the ENE at 3 mph. It’s clean, but it’s a risk t-storm day, and the afternoon gets a bit messy with a cross-shore chop.
Things get a bit rowdy from Wednesday, September 16th. The swell hits 4ft and then 5ft, but the wind turns onshore from the WNW, and the quality drops off big time. Thursday through Saturday, September 17th to 19th, the swell climbs to 6ft, but the wind is a fresh cross-shore from the SW, making it lumpy and choppy. The combined energy hits 1104 (strong) on Saturday morning, but with onshore winds, it’s a mess. This is more of a kite-surfing setup than a paddling spot.
The standout, if you’re looking for a bit of power, is Saturday afternoon, September 19th. The swell is 6ft from the NNW, with a 13-second period, and the wind goes cross-off from the SSW at 16 mph. The energy is strong (975), and it’s clean. For Right and Left Side, that’s a decent window. But at 6ft, this is getting into the intermediate to advanced territory.
The last week of the period is a slow fade. Sunday, September 20th, through Wednesday, September 23rd, the swell drops from 5ft back to 4ft, but the wind is mostly cross or cross-on, and the quality is marginal at best. The combined energy also drops from moderate back to weak. By Friday, September 25th, we’re down to 3ft from the NW, and Saturday, September 26th, is a tiny 2ft NW swell with a short 9-second period and weak energy (67). It’s clean, but it’s barely surfable.
Overall, don’t hold your breath for a long run of good waves. There’s a gap of several days of poor quality from Wednesday, September 16th, through the end of the period. The best on offer is Sunday afternoon, September 13th, for the cleanest conditions on a small swell, and Saturday afternoon, September 19th, for the biggest clean swell of the window. Lock in one of those if you want a decent session.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun morning. Warm (max 29°C on Fri morning, min 27°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Tue afternoon. Warm (max 29°C on Tue morning, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 14 | E 14 | E 14 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 9 | ENE 13 | ENE 13 | ENE 14 | ENE 12 | ENE 13 | ENE 13 |
Wave Graph | |||||||||||||||||||
144 | 132 | 184 | 198 | 173 | 173 | 282 | 215 | 198 | 269 | 215 | 247 | 180 | 427 | 427 | 236 | 374 | 721 | 880 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross | cross | cross-off | cross | cross-off | on | cross-on | cross-on |
High Tide | 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 | 11:47AM0.78m | 10:11PM0.83m | |||||||
Low Tide | 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 | 4:50AM0.22m | 4:44PM0.60m | |||||||
— | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | — | 6:24 | — | — | 6:24 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | 1 | — | — | — | 2 | — | — | — | 1 | 3 | 2 | 5 | — | — | — | 7 |
Temp °C | 28 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 28 | 28 | 28 | 27 | 29 | 28 | 27 | 29 | 29 | 28 |
Feels °C | 32 | 31 | 32 | 31 | 32 | 32 | 30 | 32 | 31 | 32 | 31 | 30 | 31 | 32 | 31 | 30 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 14 | E 13 | E 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | ENE 11 | ENE 9 | ENE 13 | ENE 13 | ENE 9 | ENE 12 | ENE 13 | ENE 13 |
86 | 76 | 76 | 198 | 173 | 173 | 282 | 215 | 198 | 269 | 215 | 247 | 180 | 427 | 427 | 132 | 374 | 721 | 880 | |
Swell 2 Height (m) Direction Period (s) | WNW 8 | E 14 | E 14 | ENE 8 | ENE 8 | ENE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 8 | S 8 |
51 | 132 | 184 | 61 | 57 | 43 | 28 | 46 | 61 | 59 | 76 | 75 | 73 | 71 | 65 | 65 | 62 | 42 | 76 | |
Swell 3 Height (m) Direction Period (s) | E 14 | W 8 | W 7 | W 7 | SE 9 | SE 9 | W 7 | NNE 8 | NNE 8 | WSW 6 | ENE 16 | WSW 7 | ENE 14 | SW 7 | SW 7 | ENE 14 | ENE 14 | SW 8 | S 8 |
144 | 29 | 17 | 16 | 28 | 27 | 8 | 13 | 24 | 4 | 24 | 4 | 76 | 7 | 7 | 236 | 111 | 23 | 29 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 2 | NNW 3 | W 6 | W 3 | WSW 5 | WSW 5 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 1 | 22 | 78 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 1863 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1289 | 1905 | 1289 | 0 | 2064 | 0 | 11 | 11 | 16 |
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.










