
Surf Forecasts:
Cape Mendocino surf forecast from 8 Sep 2026:
- Best quality surf: Saturday 12 Sep, 8AM (local time) - 3ft (0.9m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 8PM (local time) - 3.5ft (1.0m), 17s period, SW swell with 540 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 3.5ft (1.0m), 12s period with S swell.
Best Forecast Surf Conditions for Cape Mendocino this week:
The surf forecast for Cape Mendocino over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 1.0m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cape Mendocino in the next 16 days are 1.0m 17s and forecast to arrive on Thursday (Sep 10) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Monday (Sep 14) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 3.5ft (1.0m) 12s |
| Best Surf | 8AM (Sat 12th Sep) | 3ft (0.9m) 15s |
| Most Powerful | 8PM (Thu 10th Sep) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Cape Mendocino over the next 16 days.
The Lowdown
Alright, let’s talk about Cape Mendocino. It’s been a bit of a rough stretch here, and honestly, for the next few days, I’d keep the board in the car. The first real window of opportunity doesn’t show up until Saturday the 12th.
Most of this week is plagued by a persistent cross-shore wind, which is just ruining any chance of the small, weak swell linking up. The water’s sitting at 55°F, which is a fair bit colder than usual for this time of year – a solid 3°F colder, so you’ll want the thickest wetsuit you’ve got.
The first sign of life comes on Saturday morning, September 12th. The wind drops right out, turning glassy. We’ve got a 3ft south-west swell running with a 14-second period, which packs a moderate energy punch (692). That glassy condition is the key here – it’s going to be clean. The swell is lining up from the south-west, which is spot on for the exposed setup here. This is the standout of the entire outlook. It’s not massive, but it’ll be the best you’ll see. Saturday afternoon stays clean with a light offshore, but the energy bumps up a notch (753).
After that, the weekend goes downhill again. Sunday the 13th sees a turn to a weaker, short-period north-west swell (9 seconds) and the cross-shore wind comes back with a vengeance. Monday and Tuesday are write-offs with tiny swell and even stronger winds.
The next glimmer is way out there, on Wednesday the 23rd of September. Swell size picks up to 6ft, with a longer 12-second period out of the north-west, and the wave energy is strong (1199). This is a bigger, more powerful swell, but it’s still cross-shore, so it’s going to be a messy, lumpy affair. It’s a promising pulse of energy, but the wind is a major caveat.
So, to wrap it up: your best bet is Saturday morning, September 12th. Get out there early for the glassy conditions and that clean south-west swell. The rest of the window is a waiting game.
Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 13°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | S 13 | S 12 | S 12 | S 11 | SW 19 | SW 18 | SW 17 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | NW 9 | NW 9 | NW 8 | SW 17 | SW 17 | SW 17 |
Wave Graph | |||||||||||||||||||||
209 | 247 | 174 | 196 | 368 | 312 | 419 | 493 | 496 | 477 | 465 | 418 | 407 | 301 | 293 | 294 | 255 | 382 | 107 | 106 | 147 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | glassy | on | cross-off | cross | cross | cross | cross | cross | cross-off |
High Tide | 10:36AM1.56m | 9:37PM1.94m | 11:11AM1.64m | 10:32PM1.91m | 11:44AM1.71m | 11:23PM1.85m | 12:15PM1.76m | 00:14AM1.74m | 12:45PM1.78m | 1:04AM1.62m | 1:14PM1.78m | 1:56AM1.48m | 1:43PM1.76m | 2:54AM1.35m | |||||||
Low Tide | 3:59PM0.71m | 4:44AM-0.12m | 4:49PM0.56m | 5:23AM-0.05m | 5:37PM0.42m | 6:00AM0.06m | 6:22PM0.30m | 6:36AM0.21m | 7:07PM0.22m | 7:11AM0.38m | 7:51PM0.17m | 7:46AM0.56m | 8:37PM0.16m | ||||||||
6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:56 | — | — | |
— | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 25 | 24 | 19 | 18 | 18 | 15 | 15 | 16 | 13 | 15 | 16 | 15 | 15 | 16 | 13 | 16 | 16 | 14 |
Feels °C | 18 | 17 | 16 | 22 | 20 | 15 | 15 | 14 | 12 | 10 | 11 | 9 | 14 | 13 | 14 | 12 | 12 | 9 | 12 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 8 | NNW 8 | SW 19 | SW 18 | SW 17 | SSW 17 | SW 16 | SW 16 | SW 15 | SW 15 | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | SW 13 | SW 17 | SW 17 |
163 | 163 | 199 | 238 | 368 | 312 | 419 | 493 | 496 | 477 | 465 | 418 | 206 | 261 | 181 | 294 | 255 | 382 | 85 | 106 | 147 | |
Swell 2 Height (m) Direction Period (s) | S 13 | S 12 | S 12 | S 11 | S 11 | NW 12 | WNW 11 | NW 11 | NW 10 | WNW 10 | NW 10 | WNW 10 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 17 | SW 13 | SW 12 |
209 | 247 | 174 | 196 | 110 | 147 | 157 | 117 | 102 | 57 | 92 | 36 | 407 | 301 | 293 | 186 | 180 | 116 | 107 | 83 | 39 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 14 | SW 16 | WNW 13 | S 10 | S 11 | S 10 | S 10 | S 9 | WSW 16 | WSW 15 | WNW 11 | WSW 13 | NW 10 | WSW 11 | SW 19 | SW 19 | WSW 9 | WNW 15 | WNW 13 |
158 | 118 | 105 | 132 | 118 | 94 | 82 | 46 | 71 | 38 | 85 | 85 | 79 | 56 | 98 | 24 | 57 | 127 | 8 | 84 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNW 8 | NNW 8 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 8 | — | NW 8 | — | — | NNW 4 | — | NW 8 | NW 8 | NNW 8 |
— | — | — | — | 186 | 199 | 234 | 327 | 468 | 471 | 294 | 237 | — | 135 | — | — | 13 | — | 616 | 530 | 452 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 80 | 151 | 0 | 151 | 51 | 51 | 151 | 51 | 41 | 151 | 436 | 40 | 0 | 167 | 0 | 151 | 438 | 40 | 151 | 437 | 51 |
Best forecast wave conditions in Humboldt County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Cape Mendocino Surf forecast
The above surf forecast table for Cape Mendocino provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cape Mendocino can be found by selecting the local surf guide option on the grey menu. Our Cape Mendocino 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 (Cape Mendocino) 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 Cape Mendocino 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.
Cape Mendocino is 47 km (29 miles) from Eureka. If you plan a vacation in Humboldt County, look for hotels and other accommodation in Eureka. Eureka has rooms for a wide range of budgets as well as car hire and transport links.










