
Surf Forecasts:
Right and Left Side surf forecast from 15 Jul 2026:
- Best quality surf: Monday 20 Jul, 1PM (local time) - 1.5ft (0.5m), 10s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 20 Jul, 7AM (local time) - 1.5ft (0.5m), 10s period, E swell with 46 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 1PM (local time) - 1.5ft (0.5m), 10s 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 Monday (Jul 20) at 1PM. The primary swell is predicted to be 0.5m and 10s 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 0.5m 10s and forecast to arrive on Monday (Jul 20) at 7AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Thursday (Jul 16) at 1PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 20th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 1PM (Mon 20th Jul) | 1.5ft (0.5m) 10s |
| Most Powerful | 7AM (Mon 20th Jul) | 1.5ft (0.5m) 10s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get into it.
Right off the bat, I’ll be honest with you – the next couple of weeks look pretty quiet for Right and Left Side. This is a reef break that’s inconsistent at the best of times, and we’re looking at a long stretch of small, weak swell with lousy wind. The water’s sitting at a warm 84°, which is about average for this time of year, so nothing to write home about there.
From Wednesday the 15th right through to Monday the 27th of July, it’s a real struggle. We’re stuck with wave heights mostly between 1ft and 2ft, and the combined energy of all swells directed here is weak – often below 100 (like 67, 46, 28). The wind is cross or cross-on from the SW and WSW at 12 to 16 mph, so the surface is chopped up and messy. There’s a couple of mornings on the 20th and 23rd where it goes clean with a light offshore from the SSE or SE, but the swell is simply too small and weak to do anything with. It’s just a flat spell, plain and simple.
The one bright spot – and I mean the only one – comes right at the end of the forecast. On Tuesday the 28th of July, the swell starts to build a little. By the afternoon, we’ve got 2ft from the east with a period of 12 seconds, and the combined energy climbs to 209 (moderate). The wind is a gentle cross-offshore from the south at 9 mph, so it’s clean. It’s still small, but it’s a glimmer.
Then, Wednesday the 29th of July is the standout. Morning session is the pick: glassy conditions with the wind swinging light from the NW, and the swell jumps to 4ft from the east-northeast with a very long period of 16 seconds. That’s real groundswell energy – the combined energy reading is 1267, which is strong. This is a reef break, and that long period stuff will groom nicely over the reef, giving you proper, well-shaped waves. The water is still 84°, about average for the time of year. Now, 4ft sounds small, but with that period and glassy conditions, it’ll be way better than the numbers suggest. That said, it’s a long-range call, so don’t bet the house on it yet. The afternoon sees the wind go onshore, and the swell gets a bit bigger at 5ft, but the quality drops.
Thursday the 30th of July sees the swell peak at 5ft to 6ft from the east-northeast, with periods still around 15 to 16 seconds. The combined energy is massive – 1325 to 1630. But the wind is onshore from the NW and NNW at 6 mph, so it’s going to be a bit lumpy. This is solid, powerful swell, but the wind is a problem. The morning is cleaner than the afternoon, but it's not the glassy perfection of Wednesday morning.
So, if you’re keen, aim for the morning of Wednesday the 29th of July. That’s the one window where it all comes together. The rest of the run is a write-off, but that one morning has potential.
- Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Thu night. Warm (max 29°C on Wed morning, min 27°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sun morning. Warm (max 29°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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 10 | E 10 | E 10 | E 9 | ENE 9 | ENE 9 | E 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | ENE 9 | E 9 | E 9 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 |
Wave Graph | |||||||||||||||||||||
36 | 29 | 29 | 28 | 28 | 28 | 43 | 29 | 44 | 42 | 42 | 41 | 27 | 41 | 42 | 46 | 44 | 42 | 41 | 39 | 40 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross | cross-off | off | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 9:50PM0.94m | 7:44AM0.93m | 10:26PM0.94m | 8:44AM0.90m | 10:59PM0.94m | 9:45AM0.84m | 11:30PM0.93m | 10:51AM0.78m | 11:58PM0.92m | 12:04PM0.72m | 00:26AM0.90m | 1:30PM0.68m | 00:54AM0.88m | ||||||||
Low Tide | 2:22PM-0.06m | 2:54AM0.67m | 3:09PM-0.00m | 3:47AM0.62m | 3:53PM0.08m | 4:41AM0.56m | 4:34PM0.19m | 5:36AM0.49m | 5:13PM0.31m | 6:32AM0.43m | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | ||||||||
6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
— | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | |
mm | — | — | 1 | — | 1 | 3 | — | — | 2 | — | — | 1 | 2 | 3 | — | 2 | 2 | — | — | — | 2 |
Temp °C | 29 | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 28 | 27 | 28 | 29 | 28 | 28 | 28 | 27 |
Feels °C | 31 | 31 | 31 | 30 | 29 | 30 | 30 | 30 | 31 | 30 | 31 | 31 | 32 | 31 | 31 | 32 | 33 | 33 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 7 | SE 8 | SSE 8 | SE 8 | SSE 8 | ENE 9 | E 9 | ENE 9 | WSW 7 | WSW 7 | WSW 7 | WSW 6 | WSW 6 | SW 6 | WSW 6 | E 10 | SSE 9 | E 9 | E 9 | E 9 | E 9 |
24 | 34 | 28 | 34 | 28 | 28 | 43 | 29 | 128 | 82 | 79 | 60 | 44 | 38 | 23 | 46 | 32 | 42 | 41 | 39 | 40 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | E 10 | E 10 | E 9 | ENE 9 | SE 8 | SE 8 | SE 8 | E 9 | E 9 | E 9 | E 9 | ENE 9 | E 9 | E 9 | WSW 6 | E 9 | SSE 9 | NW 7 | NW 7 | SE 9 |
31 | 29 | 29 | 28 | 28 | 17 | 17 | 16 | 44 | 42 | 42 | 41 | 27 | 41 | 42 | 12 | 44 | 32 | 19 | 18 | 20 | |
Swell 3 Height (m) Direction Period (s) | WNW 10 | WNW 9 | NNE 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SE 8 | SSE 7 | S 5 | SE 10 | SE 10 | SE 9 | SE 8 | SSE 8 | NNW 8 | NW 7 | SE 9 | SE 9 | NW 7 |
36 | 17 | 6 | 5 | 5 | 10 | 10 | 5 | 9 | 10 | 4 | 17 | 35 | 29 | 18 | 23 | 22 | 26 | 29 | 29 | 17 | |
Wind waves Height (m) Direction Period (s) | SW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 7 | WSW 7 | — | — | WSW 7 | — | — | — | — | — | — | — | — | — | — |
229 | 219 | 209 | 232 | 270 | 256 | 208 | 203 | — | — | 48 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1835 | 230 | 230 | 1958 | 2197 | 1289 | 230 | 16 | 230 | 230 | 230 | 11 | 11 | 11 | 1 | 1 | 11 | 11 | 11 | 11 | 2253 |
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.










