Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 9 pm Monday 22 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
12.9° C
(Which is 1.2°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 Tuesday (Dec 23) at 1AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.7m and 8s. 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 6.5m 12s and forecast to arrive on Thursday (Dec 25) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 10s period and expected on Wednesday (Dec 24) at 1AM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Tue 23rd Dec)5ft (1.5m) 12s
Best Surf 1PM (Thu 25th Dec)21ft (6.5m) 12s
Most Powerful 1PM (Thu 25th Dec)21ft (6.5m) 12s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 69mm), heaviest during Tue night. Very mild (max 15°C on Tue night, min 9°C on Tue night). Winds increasing (light winds from the NNW on Tue morning, gales from the SSE by Tue night).

Days 3-6 Weather Summary Heavy rain (total 31mm), heaviest during Thu night. Very mild (max 12°C on Sat afternoon, min 6°C on Sat night). Winds decreasing (fresh winds from the SSE on Thu night, calm by Sun afternoon).

Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
3
3
3
0
3
3
1
0
!
5
9
9
5
3
2
2
2
1
1
1
0
Swell
Height Map
Wave Height (m) & direction (?)
1.5
WNW
2.3
WNW
2.4
WNW
1.7
WNW
2.4
WNW
1.4
NW
0.9
NW
6
SSW
6.5
SSW
4.5
SSW
5
WNW
5
WNW
3
NW
1.7
NW
2
NW
1.3
NW
1.1
NW
1
NW
0.8
NW
0.8
NW
0.6
WNW
Period(s) (?)121212121111111112121312111099888812
Wave
Graph
(?)Metric surfscale
Energy kJ (?)65814011569864134049318795231110751388321712122185576792491771329777123
Wind
(km/h)
10
ENE
5
NNW
25
SE
45
SE
20
SSE
15
ESE
25
ESE
55
S
35
SSE
35
SSE
15
ESE
15
NE
15
NNE
10
NE
10
NW
15
NE
10
ENE
5
NW
15
ENE
5
E
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
on
cross-
off
cross-
off
cross-
off
offoffcrosscross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
glasscross-
off
glasscross-
on
High Tide
/ height (m)
2:10AM
1.52
12:16PM
1.90
2:45AM
1.55
1:00PM
1.80
3:18AM
1.60
1:51PM
1.66
3:52AM
1.67
2:54PM
1.50
4:28AM
1.77
4:15PM
1.36
5:08AM
1.88
5:52PM
1.27
5:52AM
2.01
Low Tide
/ height (m)
6:34AM
1.12
7:39PM
-0.05
7:25AM
1.10
8:15PM
0.04
8:28AM
1.04
8:53PM
0.17
9:39AM
0.92
9:33PM
0.33
10:52AM
0.73
10:17PM
0.51
12:01PM
0.49
11:07PM
0.68
1:06PM
0.23
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Mon
29
Sunrise-7:35--7:35--7:35--7:35--7:37--7:37--7:37-
Sunset--4:54--4:54--4:55--4:55--4:57--4:58--4:59
mod rain
mod rain
light rain
heavy rain
part cloud
cloud
heavy rain
thunderstorm
light rain
heavy rain
mod rain
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
Rain (mm)
78224--19542173---------
Temp. °C1111141511131211111099811127111281313
Feels °C (?)910776970335549938105109
  • 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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