
Surf Forecasts:
Right and Left Side surf forecast from 17 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: Thursday 23 Jul, 7PM (local time) - 6ft (1.8m), 8s period, NE swell with 435 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 1.8m 8s and forecast to arrive on Thursday (Jul 23) at 7PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Friday (Jul 24) at 7PM.
| 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 | 7PM (Thu 23rd Jul) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Right, grab a seat mate. Rusty here. Let’s take a proper look at what’s on offer.
Straight up, the 16-day window gets off to a slow, slow start. For the first week and a half, it’s pretty much a write-off. We’re looking at a long, dry spell from now until about the 28th of July. There’s a few tiny pulses of swell but they’re all under 2ft, the period is short, and the combined energy is weak (between 8 and 47). The wind is messy, mostly cross or cross-off, and the surf is just poor. It’s a real flat spell for the area, so this blank run isn’t unusual, but it’s still a tough watch.
Then, things start to get interesting. The 28th of July Tuesday afternoon is where the game changes. We get a sudden jump to a 6ft swell from the west with a 10-second period. The combined energy hits 574 (moderate), and the wind is a light breeze out of the east, keeping it clean. This is the first real sign of life.
From there, it builds into a proper run. The standout window is the 29th of July Wednesday morning. The swell from the west holds at 4ft, the period is a nice 10 seconds, and the combined energy is strong at 596. But the best part? The wind is dead calm. Glassy. That’s a major positive. It’s going to be clean as a whistle. The break itself, Right and Left Side, is an exposed reef, so it’ll handle this west swell beautifully. It’s a spot that’s *inconsistent* and for *advanced* surfers only, so this is a rare treat. The water temperature is about average for this time of year, so no surprises there.
The run continues into the 31st of July Friday afternoon. The swell shifts to the north-west, bumps up to 4ft, but the period gets long at 12 seconds. This is proper groundswell energy. The combined energy is 651 (strong). The wind is light and cross-off, so it’ll be clean. That long period will give it some real shape and power, but on a slabby reef like this, it’ll be for the experienced crew only.
Heading into the first week of August, the 1st and 2nd are worth noting but with a big caveat. The swell sticks around from the NW, with a very long period of 13 to 14 seconds and combined energy climbing to 988 (strong). The heights are 4ft to 5ft. The wind is light and cross, so it’s not offshore, but it’s not terrible. The direction is a good match for the break’s optimum north swell direction. However, the forecast notes marginal tide conditions, so you’ll need to pick your moment. The long period is a double-edged sword: it’ll bring beautiful, powerful lines, but it’s best for experienced surfers at a reef break.
The 29th of July Wednesday morning is the absolute best on offer. The 31st of July Friday afternoon is a close second. The rest of the first week of August is promising but less certain, so keep an eye on it.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun morning. Warm (max 29°C on Sat morning, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 43mm), heaviest during Thu morning. Warm (max 29°C on Tue morning, min 25°C on Thu morning). Winds increasing (light winds from the SSE on Mon night, strong winds from the NW by Thu afternoon). | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 10 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 10 | E 10 | ENE 9 | NE 7 |
Wave Graph | |||||||||||||||||||
44 | 42 | 28 | 27 | 27 | 27 | 43 | 47 | 44 | 42 | 28 | 27 | 27 | 27 | 26 | 158 | 305 | 320 | 217 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | on | on | cross |
High Tide | 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 | 3:12PM0.67m | 1:23AM0.85m | 5:00PM0.69m | 1:58AM0.83m | ||||||
Low Tide | 4:41AM0.56m | 4:34PM0.19m | 5:36AM0.49m | 5:13PM0.31m | 6:32AM0.43m | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | 8:22AM0.32m | 7:07PM0.61m | 9:16AM0.28m | 8:04PM0.67m | |||||||
— | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:51 | — | — | 6:51 | — | — | 6:51 | — | |
mm | 2 | — | — | 1 | 4 | 3 | 1 | — | — | — | — | — | — | — | 3 | 3 | 23 | 14 | 39 |
Temp °C | 28 | 29 | 29 | 28 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 27 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 31 | 32 | 30 | 31 | 31 | 30 | 27 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | ENE 9 | WSW 6 | WSW 6 | WSW 6 | SW 7 | SW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SE 10 | SE 10 | E 10 | E 10 | ENE 9 | NE 7 |
44 | 42 | 28 | 53 | 55 | 64 | 75 | 104 | 84 | 44 | 32 | 32 | 32 | 50 | 61 | 158 | 305 | 320 | 217 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SSE 7 | SSE 7 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 10 | E 9 | SSE 9 | ENE 9 | SE 10 | ENE 9 | WSW 7 | WSW 7 | SE 10 | SW 8 | SW 7 | SE 11 |
9 | 10 | 5 | 27 | 27 | 27 | 43 | 47 | 44 | 32 | 28 | 47 | 27 | 19 | 18 | 47 | 55 | 51 | 29 | |
Swell 3 Height (m) Direction Period (s) | S 7 | SE 11 | NNW 6 | S 6 | S 6 | S 6 | SE 8 | SE 8 | SE 9 | E 9 | SE 9 | ENE 9 | SE 9 | ENE 9 | ENE 9 | SW 6 | SE 9 | SE 11 | SE 15 |
4 | 5 | 4 | 12 | 10 | 6 | 16 | 18 | 21 | 42 | 40 | 27 | 20 | 27 | 26 | 11 | 30 | 41 | 9 | |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | — | — | — | — | — | SSE 5 | — | — | — | — | — | — | N 3 | N 6 | NNW 5 | SW 7 |
102 | 83 | 83 | — | — | — | — | — | 5 | — | — | — | — | — | — | 6 | 86 | 83 | 386 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 16 | 230 | 230 | 230 | 230 | 230 | 1 | 1 | 23 | 1 | 2253 | 2253 | 2253 | 2253 | 2253 | 1958 | 11 | 1958 | 2097 |
Best forecast wave conditions in Guam | |||||||||||||||||||
Best forecast wave conditions in Guam | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










