Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 9 pm Friday 12 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
13.1° C
(Which is 1.1°C warmer than normal for this time of year)


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 Saturday (Dec 13) at 4AM. The primary swell is predicted to be 1.3m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Third Reef in the next 12 days are 3.5m 11s and forecast to arrive on Thursday (Dec 18) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Saturday (Dec 13) at 10PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 13th Dec)4.5ft (1.3m) 12s
Best Surf10PM (Mon 15th Dec)6.5ft (2.0m) 12s
Most Powerful 7PM (Thu 18th Dec)11ft (3.5m) 11s

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 Mon afternoon, min 12°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 56mm), heaviest during Tue morning. Very mild (max 16°C on Mon night, min 8°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SSE by Thu afternoon).

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
3
2
2
2
2
2
2
2
2
4
4
1
1
3
1
4
3
2
3
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.4
WNW
1.1
WNW
0.8
WNW
1
W
0.9
W
1
W
0.9
W
0.8
WSW
1
W
2.2
W
2.1
W
1.9
W
2.1
W
2.1
W
1.9
W
2.2
W
1.6
W
3
WSW
2.5
W
1.8
W
1.8
NW
Period(s) (?)1212111211101098121111121211111110101011
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5143371532681912061481061331288106582811871229930116558813951412627821
Wind
(km/h)
5
E
5
SE
0
ENE
5
NE
10
E
0
SE
5
E
0
SW
5
SE
5
ESE
0
SSW
25
S
15
SW
10
N
20
WNW
5
E
25
SE
30
SSE
15
S
15
NNW
20
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offglassglasscross-
off
offglassoffglassglassglassglasscrosscross-
on
crosscross-
on
offcross-
off
cross-
off
crosscrosscross
High Tide
/ height (m)
6:25AM
1.79
7:00PM
1.25
7:01AM
1.85
8:15PM
1.26
7:35AM
1.90
9:17PM
1.31
8:08AM
1.95
10:09PM
1.36
8:41AM
1.99
10:55PM
1.41
9:15AM
2.02
11:37PM
1.44
9:50AM
2.03
Low Tide
/ height (m)
11:32PM
0.50
1:11PM
0.55
12:18AM
0.67
2:04PM
0.36
1:04AM
0.81
2:50PM
0.20
1:50AM
0.91
3:30PM
0.06
2:34AM
0.98
4:07PM
-0.04
3:16AM
1.03
4:43PM
-0.12
3:56AM
1.06
5:18PM
-0.16
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
Sunrise-7:28--7:30--7:30--7:31--7:31--7:31--7:33-
Sunset--4:51--4:51--4:51--4:52--4:52--4:52--4:52
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
light rain
heavy rain
mod rain
rain showers
part cloud
part cloud
part cloud
light rain
heavy rain
heavy rain
rain showers
part cloud
Rain (mm)
---------12176---219271-
Temp. °C1215131215141416171615141411119912121211
Feels °C (?)1013129121310131517161114967391086
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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