
Surf Forecasts:
Right and Left Side surf forecast from 10 Jul 2026:
- Best quality surf: Sunday 12 Jul, 1AM (local time) - 5.5ft (1.7m), 14s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 10 Jul, 4PM (local time) - 8ft (2.5m), 14s period, W swell with 2,565 kJ wave energy.
- Next surfable swell (1★+): Sunday 12 Jul, 1AM (local time) - 5.5ft (1.7m), 14s 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 Sunday (Jul 12) at 1AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 0.8m and 9s. 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 2.5m 14s and forecast to arrive on Friday (Jul 10) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 8s period and expected on Friday (Jul 17) at 4PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 12th Jul) | 5.5ft (1.7m) 14s |
| Best Surf | 1AM (Sun 12th Jul) | 5.5ft (1.7m) 14s |
| Most Powerful | 4PM (Fri 10th Jul) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
Right, let’s have a look at what’s cookin’ for the next couple of weeks. The main event is a consistent run at Right and Left Side, a reef setup that’s exposed to the west swell but only breaks when conditions line up just right. Over the next week there’s a solid pulse of energy, but the first few days are a bit of a write-off thanks to messy cross-shore winds and chop that will leave the surface ragged.
Friday the 10th and Saturday the 11th are frustrating: you’ve got a 8 ft to 7 ft west swell rolling in, plenty of push (combined swell energy around 2605 and 1603), but a steady 9-12 mph cross-breeze means it’s chopped up and marginal. Not worth paddling out for anything but a beating.
The real window opens Sunday morning the 12th. The swell drops to 6 ft from the west, period of 13 seconds—solid groundswell—and the wind swings offshore from the SE at 9 mph. That’s the magic combo: clean faces, 6 ft of lined-up west swell, and energy readings still strong at 1171. This is advanced territory though, over 5 ft, so it’s not for beginners. Gotta respect the reef. The water’s sitting at 84°F, which is pretty average for this time of year, so no surprises there.
Sunday afternoon and all of Monday the 13th keep the clean theme going with light offshore or cross-off breezes and west-northwest swell easing from 5 ft down to 4 ft. The energy drops from 1036 to 447, but the shape will still be tidy. Tuesday morning the 14th is the tail end of that run: 3 ft, clean, light airs—chilled and fun.
Then it goes quiet. From Tuesday afternoon the 14th right through to Saturday the 19th, the swell all but dies, with heights under 2 ft and energy readings in the double digits or low triple digits. That’s a solid 5-day flat spell with stormy winds and cross-chop making it a complete dud. Even the pickup on Sunday the 19th looks rough—6 ft from the WNW but with a 25 mph cross-breeze making it a messy, blown-out mess. Honestly, that’s more of a kitesurfing zone than anything you’d paddle.
The second week starts to look promising again from Monday the 21st onward. That morning brings a big 10 ft west swell with combined energy at 1380, but it’s still cross-off wind and the period is only 9 seconds—short interval, so it’ll be a bit lumpy and maybe tricky at a reef. Not clean enough for a standout. Tuesday the 22nd through Thursday the 23rd settles into a sweet groove: 5 ft to 6 ft west swell, 10-second period, and light S to SSW cross-off winds keeping it glassy. Energy readings are moderate to strong, around 355 to 645. These are the best days of the second week.
But the real standout of the whole forecast lands on Saturday the 25th. By the afternoon, an 12 ft west swell rolls in with a very long 12-second period—that’s proper groundswell. Combined energy hits 2917, and the wind stays gentle from the SSW at 9 mph, cross-off and clean. That’s a huge, powerful swell, only for experienced surfers—over 8 ft is expert territory. At a reef break, that long period will hold up beautifully and give you long, grinding walls. Crowds are listed as “sometimes,” so you might have company, but on a day that big, you’ll want a few mates around anyway.
So, bottom line: Sunday the 12th is your early call for clean, solid reef waves, and Saturday the 25th is the big one later on—promising but a long way out, so keep an eye on it.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun morning. Warm (max 29°C on Sun afternoon, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 41mm), heaviest during Mon morning. Warm (max 29°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | |||||||||||||||
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) | W 14 | W 14 | W 14 | W 14 | WNW 14 | WNW 14 | WNW 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | WNW 9 | ENE 10 | SW 7 | ENE 9 | ENE 9 |
Wave Graph | |||||||||||||||||||||
2416 | 2565 | 1756 | 1731 | 1548 | 1106 | 811 | 878 | 594 | 519 | 379 | 308 | 203 | 196 | 91 | 56 | 48 | 31 | 0 | 28 | 29 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross | cross-on | cross | cross | cross-on | cross-on | cross-off | off | glassy |
High Tide | 5:27PM0.76m | 2:54AM0.91m | 6:41PM0.82m | 3:47AM0.92m | 7:39PM0.87m | 4:45AM0.93m | 8:28PM0.91m | 5:45AM0.95m | 9:11PM0.93m | 6:45AM0.95m | 9:50PM0.94m | 7:44AM0.93m | 10:26PM0.94m | ||||||||
Low Tide | 9:24PM0.68m | 10:52AM0.08m | 10:47PM0.72m | 11:47AM0.00m | 00:00AM0.74m | 12:41PM-0.05m | 1:03AM0.73m | 1:33PM-0.07m | 2:00AM0.71m | 2:22PM-0.06m | 2:54AM0.67m | 3:09PM-0.00m | 3:47AM0.62m | ||||||||
5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | |
mm | — | — | — | — | — | — | 4 | — | 2 | 5 | 2 | 5 | 2 | 8 | 5 | 4 | 3 | 7 | — | — | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 27 | 28 | 29 | 27 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 |
Feels °C | 31 | 31 | 30 | 30 | 31 | 30 | 30 | 33 | 31 | 30 | 32 | 30 | 33 | 32 | 33 | 30 | 30 | 30 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | W 14 | W 14 | W 14 | W 14 | WNW 14 | WNW 14 | WNW 13 | W 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | SSE 7 | S 7 | SW 6 | SW 7 | SW 7 | SW 7 |
2416 | 2565 | 1756 | 1731 | 1548 | 1106 | 811 | 878 | 594 | 519 | 379 | 308 | 203 | 196 | 91 | 68 | 77 | 66 | 63 | 54 | 36 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 9 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | ENE 9 | ENE 8 | E 8 | SE 9 | SE 9 | E 9 | ESE 10 | E 10 | E 10 | SSW 6 | WSW 7 | SSE 8 | SSE 8 | S 6 | S 8 |
26 | 26 | 311 | 252 | 246 | 130 | 126 | 115 | 84 | 12 | 13 | 78 | 81 | 45 | 46 | 29 | 42 | 62 | 26 | 20 | 31 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | ENE 9 | E 9 | SE 12 | WSW 10 | SE 10 | WSW 9 | ENE 9 | ENE 9 | SE 9 | SE 8 | WSW 8 | NNE 8 | WNW 10 | WNW 9 | ENE 10 | SSE 7 | ENE 9 | ENE 9 |
31 | 31 | 22 | 84 | 40 | 35 | 80 | 17 | 47 | 16 | 8 | 19 | 23 | 13 | 6 | 56 | 48 | 31 | 17 | 28 | 29 | |
Wind waves Height (m) Direction Period (s) | — | — | ENE 9 | ENE 5 | ENE 6 | ENE 9 | — | — | — | E 8 | E 8 | — | SSE 4 | SSE 7 | S 7 | WSW 6 | — | SW 6 | — | — | — |
— | — | 62 | 24 | 31 | 103 | — | — | — | 82 | 92 | — | 5 | 143 | 142 | 36 | — | 101 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1835 | 26 | 1303 | 1303 | 1303 | 1835 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 230 | 232 | 16 | 16 | 16 | 230 | 13 |
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.










