Surf Forecasts:
The Patch surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 2ft (0.6m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 2AM (local time) - 5.5ft (1.7m), 7s period, WNW swell with 310 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 2ft (0.6m), 14s period with SW swell.
Best Forecast Surf Conditions for The Patch this week:
The surf forecast for The Patch over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Patch in the next 16 days are 1.7m 7s and forecast to arrive on Thursday (Aug 20) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 18th Aug) | 2ft (0.6m) 14s |
| Best Surf | 2AM (Tue 18th Aug) | 2ft (0.6m) 14s |
| Most Powerful | 2AM (Thu 20th Aug) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for The Patch over the next 16 days.
The Lowdown
Alright, Rusty here, let’s have a look at what’s on the menu for the next couple of weeks.
First off, we’re looking at The Patch. It’s a beginner-friendly spot, fairly consistent, and it’s exposed to the SW. The water’s sitting at 60°, which is a touch warmer than usual for this time of year – nothing wild, but a nice little bonus.
The good news starts on Tuesday morning, the 18th of August. We’ve got a clean, 2ft SW groundswell rolling in with a long 15-second period, and the wind is a light cross-off. That’s a solid combo for a fun, mellow session. The combined energy is moderate at 336, so there’s a bit of push behind it.
The rest of the first week is a bit of a mixed bag. The swell stays small, mostly between 2ft and 3ft, and while the wind is often cross-off or light, the wave quality is just not there for a standout. The period drops off on Thursday and Friday, with some short-period, weak WNW windswell that just doesn’t have the shape. The energy picks up a bit, hitting 432 on Thursday afternoon, but it’s short-period junk. The Patch is fairly consistent, so it’s not all doom and gloom, but we’re in a waiting game.
The weekend of the 23rd and 24th is quiet. Small swells, cross-shore winds, and the energy is dropping. The 24th of August sees a pulse of 2ft, 18-second SW groundswell, but the wind is cross, and the energy is moderate at 332. It’s a tease.
Now, here’s where it gets interesting. Jump ahead to Thursday morning, the 27th of August. The Patch sees a jump in size to 6ft from the NW with a short 7-second period, but the wind is a light cross-off, and the combined energy is a strong 581. The wave comment says “very good surf conditions.” This is your standout. The swell is a bit short-period, but the clean conditions and the energy should produce some fun, punchy waves. Keep in mind, at 6ft, it’s getting a bit much for absolute beginners, but it’s still very manageable for the average surfer.
The following week is a mixed bag of small SW groundswells and onshore winds. The 29th of August has a 3ft, 18-second SW groundswell with a light cross, and the energy is very strong at 873, but the wind is cross, and the wave quality is just marginal. The 31st of August sees a 7ft WNW windswell with a short period, and the energy is very strong at 1055, but the wind is light cross-on. That’s a lot of water moving, but the short period and onshore angle will make it a bumpy, messy affair. That’s more for the experts or the kite crew.
So, to keep it simple: the best bet on offer is the Thursday morning session on the 27th of August. Clean, good energy, and a decent swell. Everything else is a bit of a gamble or a flat spell. The Patch is fairly consistent, so it’ll bounce back, but for now, mark that Thursday in your calendar.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Wed afternoon, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Sat morning, min 13°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | SW 15 | SW 14 | SW 15 | SW 16 | WNW 7 | SW 15 | SW 15 | WNW 7 | SSW 14 | SSW 14 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
Wave Graph | ||||||||||||||||||||
255 | 169 | 220 | 208 | 149 | 217 | 223 | 310 | 134 | 150 | 243 | 192 | 181 | 155 | 81 | 122 | 149 | 160 | 151 | 113 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross |
High Tide | 3:36PM1.24m | 4:24AM0.89m | 4:13PM1.22m | 5:53AM0.82m | 4:57PM1.19m | 7:43AM0.81m | 5:49PM1.18m | 9:11AM0.86m | 6:48PM1.17m | 10:06AM0.91m | 7:48PM1.19m | 10:45AM0.95m | 8:43PM1.22m | |||||||
Low Tide | 10:49PM0.21m | 10:24AM0.41m | 11:52PM0.19m | 11:15AM0.52m | 1:00AM0.17m | 12:22PM0.60m | 2:08AM0.14m | 1:41PM0.64m | 3:09AM0.10m | 2:51PM0.64m | 4:01AM0.06m | 3:46PM0.61m | 4:44AM0.03m | |||||||
— | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | |
8:00 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:55 | — | — | 7:54 | — | — | 7:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 13 | 15 | 17 | 13 | 17 | 18 | 13 | 17 | 17 | 14 | 16 | 17 | 14 | 18 | 18 | 14 | 17 | 18 | 14 |
Feels °C | 15 | 11 | 14 | 15 | 10 | 17 | 17 | 10 | 16 | 15 | 11 | 13 | 14 | 11 | 17 | 17 | 11 | 16 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | WNW 8 | SW 16 | WNW 7 | WNW 8 | SW 15 | SW 15 | W 12 | W 12 | SSW 14 | SW 14 | WNW 10 | SSW 13 | WNW 7 | SW 17 | WNW 8 | WNW 8 | WNW 9 | WNW 9 |
255 | 169 | 113 | 208 | 148 | 161 | 223 | 183 | 134 | 132 | 138 | 93 | 37 | 68 | 81 | 102 | 149 | 160 | 151 | 108 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 6 | SW 15 | SSW 13 | SW 14 | SW 15 | W 12 | W 11 | SSW 14 | SSW 14 | W 11 | W 11 | SSW 13 | WNW 10 | WNW 8 | SW 13 | SW 12 | SW 19 | SW 18 | SSW 15 |
26 | 30 | 220 | 66 | 149 | 217 | 74 | 93 | 129 | 136 | 62 | 61 | 68 | 35 | 24 | 43 | 38 | 130 | 114 | 86 | |
Swell 3 Height (m) Direction Period (s) | S 9 | WNW 9 | SW 9 | W 16 | SW 17 | W 13 | SW 21 | — | WSW 19 | SW 19 | SW 20 | SW 18 | SW 18 | SW 18 | SW 13 | W 12 | SW 19 | SSW 16 | SSW 16 | SW 18 |
7 | 26 | 3 | 19 | 77 | 82 | 18 | — | 37 | 14 | 15 | 51 | 49 | 48 | 44 | 12 | 55 | 50 | 50 | 113 | |
Wind waves Height (m) Direction Period (s) | WNW 7 | — | — | WNW 8 | — | — | WNW 8 | WNW 7 | WNW 7 | WNW 6 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | — | WNW 8 | — | — | — | — |
25 | — | — | 113 | — | — | 170 | 310 | 113 | 150 | 243 | 192 | 181 | 155 | — | 122 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 123 | 0 | 0 | 121 | 22 | 22 | 121 | 22 | 0 | 120 | 22 | 22 | 120 | 0 | 25 | 121 | 0 | 22 | 121 | 22 |
Best forecast wave conditions in Marin County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the The Patch Surf forecast
The above surf forecast table for The Patch provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Patch can be found by selecting the local surf guide option on the grey menu. Our The Patch 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 (The Patch) 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 The Patch 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.
The Patch is 15 km (9 miles) from the city of Corte Madera. If you plan a vacation in Marin County, look for hotels and other accommodation in Corte Madera. Corte Madera has rooms for a wide range of budgets as well as car hire and transport links.











