
Surf Forecasts:
San Juan surf forecast from 19 Jul 2026:
- Most powerful swell: Saturday 25 Jul, 8AM (local time) - 0.5ft (0.2m), 5s period, N swell with 2 kJ wave energy.
Best Forecast Surf Conditions for San Juan this week:
The most powerful waves expected at San Juan in the next 16 days are 0.2m 5s and forecast to arrive on Saturday (Jul 25) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Monday (Jul 20) at 11AM.
| Wave Type | Time (PST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 25th Jul) | 0.5ft (0.2m) 5s |
Table - best surf conditions forecast for San Juan over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the next couple of weeks in feet and miles per hour. I’ll be honest—it’s a long, flat road ahead.
We’re stuck in a dry spell right from the start. From July 20th all the way through to the morning of August 3rd, there’s just no real surf. That’s a massive gap. We’re looking at tiny bumps—0.3ft to 0.7ft tops—and the combined swell energy is weak, mostly hitting 1 or 2. The wind is light and often cross or cross-off, which would be perfect if there was any swell, but there isn’t. It’s a tough, slow period.
The only thing worth mentioning pops up on Monday afternoon, August 3rd. San Juan (Filipinas) gets a 4ft swell from the west, with a period of 7 seconds. That’s a short-period windswell, nothing fancy. The combined wave energy hits 107, which is at least moderate. The wind goes glassy, so the surface will be clean. For a spot that’s been dead, this is the one to look at—but don’t overhype it. The swell direction is west, and this break likes a north swell, so it won’t be perfect. The wave report still calls it “poor surf conditions,” so it’s more of a fun novelty than a proper session.
After that, Tuesday morning on August 4th drops right back to a tiny 1ft swell out of the west-northwest, with only 20 in the energy department. The window slams shut. San Juan is an inconsistent reef break that’s fine for beginners when it works, and this brief pulse is as good as it gets in a very flat outlook.
Bottom line: a long stretch with nothing, a short-lived and average little wave on August 3rd, and then back to zero. Water temp is average for the time of year, but that’s small comfort when you’re staring at flat water. Forecasts can always change, but right now, it’s a waiting game.
Rusty.
Short Range ForecastHeavy rain (total 34mm), heaviest during Sun night. Warm (max 30°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Wed night. Warm (max 29°C on Thu morning, min 26°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | WSW 7 | WSW 7 | WSW 7 | WSW 7 | NW 4 | WSW 7 | W 7 | W 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | N 5 | SW 7 | SW 7 | N 5 | SW 7 | WSW 7 |
Wave Graph | |||||||||||||||||||
0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross | glassy | cross-off | cross-on | glassy | cross-off | cross-on | cross-off | cross | on | cross-off | cross | on | cross-off | cross-off | on | off |
High Tide | 11:53AM0.65m | 3:56AM0.60m | 3:57AM0.70m | 4:20AM0.79m | 4:52AM0.86m | 5:30AM0.92m | |||||||||||||
Low Tide | 8:23PM0.27m | 7:58PM0.33m | 7:12PM0.35m | 5:56PM0.32m | 4:29PM0.25m | 4:19PM0.19m | 4:38PM0.14m | ||||||||||||
— | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | |
6:35 | — | 6:34 | — | — | 6:34 | — | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:32 | — | |
mm | 8 | — | 3 | 12 | 1 | 2 | 3 | — | 5 | 5 | — | 2 | 7 | — | 2 | 1 | — | 2 | 4 |
Temp °C | 28 | 29 | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 32 | 34 | 32 | 33 | 32 | 33 | 33 | 32 | 33 | 33 | 32 | 33 | 33 | 33 | 34 | 33 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 7 | SW 7 | WSW 7 |
36 | 51 | 57 | 43 | 41 | 41 | 29 | 29 | 26 | 29 | 21 | 21 | 20 | 20 | 13 | 13 | 13 | 12 | 9 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NW 4 | — | W 7 | W 7 | — | — | — | — | — | N 5 | — | — | N 5 | — | — |
— | — | — | — | 1 | — | 1 | 1 | — | — | — | — | — | 1 | — | — | 2 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 81 | 600 | 600 | 81 | 600 | 1314 | 81 | 590 | 590 | 550 | 140 | 140 | 548 | 168 | 632 | 166 | 550 | 548 | 542 |
Best forecast wave conditions in West Luzon | |||||||||||||||||||
Best forecast wave conditions in Philippines | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the San Juan Surf forecast
The above surf forecast table for San Juan provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at San Juan can be found by selecting the local surf guide option on the grey menu. Our San Juan 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 (San Juan) 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 San Juan 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.










