
Surf Forecasts:
Third Reef surf forecast from 15 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 2AM (local time) - 6ft (1.9m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 5PM (local time) - 6.5ft (2.0m), 8s period, NW swell with 507 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 2AM (local time) - 6ft (1.9m), 8s period with NW swell.
Best Forecast Surf Conditions for Third Reef this week:
The surf forecast for Third Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 15) at 2AM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 1.3m and 8s. Another secondary swell of 0.5m and 17s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Third Reef in the next 16 days are 2.0m 8s and forecast to arrive on Monday (Sep 21) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 17s period and expected on Thursday (Sep 17) at 8AM.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 15th Sep) | 6ft (1.9m) 8s |
| Best Surf | 2AM (Tue 15th Sep) | 6ft (1.9m) 8s |
| Most Powerful | 5PM (Mon 21st Sep) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Third Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s take a look at what’s on the table for Third Reef over the next couple of weeks.
Right off the bat, I gotta be straight with you – the start of this period is pretty grim. We’ve got a bit of a lull to get through before anything worth paddling out for shows up. For the first few days, from Monday the 14th through to Tuesday the 15th, it's a write-off. The wind is a fresh cross-onshore, the swell is short-period and disorganised, and the energy reading is only around 484 to 688 (moderate wave energy), but with that lumpy, choppy surface, it's not going to be fun. The water temp is 59°F, which is pretty average for this time of year, so no shock there.
Now, things start to look up on Wednesday the 16th. The morning is still a bit junky, but by Wednesday afternoon, we see a proper window of opportunity. The wind drops to glassy conditions from the ESE at just 3 mph. The swell fills in at a clean 7 ft from the NW with an 8-second period, and the energy jumps to 969 (moderate wave energy). That’s a solid session on the cards – clean, head-high-plus waves with no wind messing them up. This is the standout of the whole outlook, no question.
Thursday the 17th morning still offers some clean waves with a light cross-off breeze, though the swell drops to 4 ft. It’s still rideable, but not as punchy as the day before. After that, from Thursday afternoon through to the end of the week and into the next, the swell drops right off. We’re looking at small, weak, long-period SW groundswell between 2 ft and 3 ft. Periods are long (16-19 seconds), which suggests some shape but very little power. Winds are mostly light to moderate cross-on or onshore, so it’s a frustrating run of marginal conditions. The energy values hover around 300-700 (weak to moderate wave energy) – nothing to get excited about.
Jump ahead to Sunday the 20th and Monday the 21st, the cross-onshore wind picks up again, making a mess of things. Keep the boards in the car for those days.
We get another glimpse of hope on Tuesday the 22nd afternoon. Glassy conditions return with a 5 ft NW swell, 9-second period, and energy at 761 (moderate wave energy). It’s a repeat of the Wednesday session but a touch smaller. Definitely worth a look if you can sneak away.
The following week gets a bit more interesting towards the end. Monday the 28th morning has clean conditions with a cross-off breeze and a small 2 ft SW swell, but it’s not exactly firing. Then, Tuesday the 29th morning brings a bigger pulse – 7 ft from the NW with a 10-second period and a very high energy reading of 1473 (strong wave energy). That’s a lot of water moving, but the wind is a light cross-onshore, so it’ll have a bit of texture. This one is really only for the experienced crew – that size over 8 ft on a reef setup is serious business.
So, to sum it up: your best bets are Wednesday afternoon the 16th and Tuesday afternoon the 22nd. The 16th is the pick of the bunch – glassy, solid, and clean. The 29th morning offers the biggest swell, but it’s not as clean and it’s for experts only. Crowds at Third Reef can be an issue sometimes, so keep that in mind if you’re heading out on the better days.
Stay stoked.
\- Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Mon afternoon, min 12°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Fri morning, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | SSW 16 | SW 21 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 19 | SW 18 |
Wave Graph | ||||||||||||||||||||
363 | 424 | 260 | 373 | 338 | 196 | 480 | 286 | 227 | 198 | 160 | 303 | 303 | 303 | 258 | 375 | 375 | 383 | 414 | 366 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross-on | cross | cross-on | glassy | glassy | cross-off | on | cross | on | cross-on | cross-off | on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 2:55AM1.46m | 2:22PM1.81m | 3:52AM1.33m | 2:57PM1.75m | 5:01AM1.23m | 3:36PM1.69m | 6:33AM1.19m | 4:27PM1.62m | 8:06AM1.21m | 5:35PM1.58m | 9:00AM1.27m | 6:53PM1.58m | ||||||||
Low Tide | 8:33PM0.13m | 8:13AM0.70m | 9:22PM0.17m | 8:45AM0.85m | 10:16PM0.22m | 9:22AM0.98m | 11:19PM0.26m | 10:14AM1.07m | 00:27AM0.27m | 11:34AM1.11m | 1:32AM0.25m | 1:01PM1.09m | 2:28AM0.21m | |||||||
— | — | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | |
7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:17 | — | — | 7:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 16 | 16 | 17 | 17 | 15 | 14 | 13 | 15 | 15 | 14 | 16 | 16 | 13 | 15 | 15 | 14 | 16 | 17 | 15 |
Feels °C | 16 | 13 | 13 | 15 | 14 | 13 | 12 | 13 | 14 | 15 | 14 | 15 | 15 | 14 | 13 | 13 | 14 | 13 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 17 | NW 8 | NW 8 | SW 16 | SW 16 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 19 | SW 18 |
188 | 221 | 260 | 122 | 87 | 196 | 253 | 286 | 227 | 180 | 97 | 100 | 303 | 303 | 258 | 375 | 375 | 383 | 414 | 366 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 17 | SW 17 | SW 12 | WNW 12 | SW 16 | SW 16 | SSW 18 | S 17 | SSW 16 | SSW 15 | SW 19 | SSW 14 | NW 5 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 |
83 | 147 | 179 | 23 | 29 | 121 | 121 | 104 | 146 | 198 | 135 | 303 | 120 | 11 | 60 | 60 | 58 | 33 | 31 | 29 | |
Swell 3 Height (m) Direction Period (s) | NW 15 | SW 12 | NW 13 | S 21 | S 20 | S 19 | SSW 19 | SW 14 | SW 21 | SW 21 | SW 21 | SSW 15 | S 11 | NNW 8 | NNW 8 | SW 13 | NW 8 | S 10 | SW 12 | SSW 12 |
54 | 39 | 45 | 81 | 67 | 118 | 115 | 71 | 160 | 160 | 160 | 167 | 9 | 26 | 24 | 26 | 18 | 7 | 6 | 29 | |
Wind waves Height (m) Direction Period (s) | NW 7 | NW 8 | — | NW 8 | NW 8 | — | NW 8 | — | — | — | — | — | NW 8 | NW 5 | NW 5 | NW 5 | NW 6 | NW 7 | NW 7 | NW 8 |
363 | 424 | — | 373 | 338 | — | 480 | — | — | — | — | — | 156 | 45 | 17 | 79 | 36 | 116 | 247 | 205 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 385 | 0 | 193 | 3 | 3 | 195 | 0 | 0 | 0 | 29 | 0 | 195 | 3 | 0 | 116 | 195 | 3 | 195 | 387 | 3 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Third Reef Surf forecast
The above surf forecast table for Third Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Third Reef can be found by selecting the local surf guide option on the grey menu. Our Third Reef 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 (Third Reef) 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 Third Reef 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.
Third Reef is 85 km (53 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.










