Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 3 am Sunday 07 Dec 2025 PST
Forecast update in hr  min  s Forecast update imminent
Third Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Third Reef sea temperature is
13.0° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Third Reef this week:

The surf forecast for Third Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 07) at 10AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.6m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Third Reef in the next 12 days are 2.3m 16s and forecast to arrive on Thursday (Dec 11) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 13s period and expected on Friday (Dec 12) at 1PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Sun 7th Dec)4.5ft (1.4m) 12s
Best Surf10PM (Mon 8th Dec)6ft (1.9m) 13s
Most Powerful 1PM (Thu 11th Dec)7.5ft (2.3m) 16s

Table - best surf conditions forecast for Third Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 17°C on Tue morning, min 11°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 19°C on Wed afternoon, min 12°C on Wed night). Wind will be generally light.

Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
0
2
2
1
4
4
1
4
4
2
4
4
3
4
4
2
3
3
1
2
Swell
Height Map
Wave Height (m) & direction (?)
1.4
WNW
1.3
WNW
1.3
WNW
1.2
WNW
1.6
WNW
1.9
WNW
2
WNW
2.1
WNW
2.2
WNW
2.1
WNW
2.5
WNW
2.3
WNW
2.3
WNW
2.3
WNW
2.1
WNW
1.8
WNW
1.7
WNW
1.4
WNW
1.2
WNW
1.2
W
1.1
W
Period(s) (?)12111191112131212131313161514131312121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)52141237222761710731297132013161551231318112491242718261127983557418397284
Wind
(km/h)
5
NNE
15
NW
10
NNE
10
NE
15
NW
10
NNE
10
NNE
15
NW
10
NNE
10
NNE
15
NNW
15
NNE
10
NNE
15
NNW
10
NNE
5
NE
10
NNW
10
NE
5
NNE
10
NNW
15
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
on
cross-
off
glasscross-
on
cross-
off
High Tide
/ height (m)
11:56AM
2.26
2:25AM
1.58
12:49PM
2.10
3:17AM
1.59
1:46PM
1.89
4:09AM
1.62
2:49PM
1.66
4:59AM
1.67
4:03PM
1.46
5:44AM
1.73
5:31PM
1.31
6:25AM
1.79
7:00PM
1.25
Low Tide
/ height (m)
7:22PM
-0.46
6:57AM
1.03
8:13PM
-0.29
8:06AM
1.03
9:05PM
-0.10
9:26AM
0.99
9:55PM
0.11
10:50AM
0.89
10:44PM
0.31
12:06PM
0.73
11:32PM
0.50
1:11PM
0.55
12:18AM
0.67
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunrise7:24--7:24--7:26--7:26--7:26--7:28--7:28--
Sunset-4:50--4:50--4:50--4:50--4:51--4:51--4:51-
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C151412161612171714181913171812161513161612
Feels °C (?)1312101314111414121617111416914131113149
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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.

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