Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 3 pm Saturday 27 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
12.8° 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 Saturday (Dec 27) at 10PM. The primary swell is predicted to be 1.6m and 10s period with a secondary swell of 0.2m and 15s. 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 2.5m 12s and forecast to arrive on Saturday (Jan 03) at 4AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Jan 02) at 4AM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 27th Dec)5ft (1.6m) 10s
Best Surf10PM (Wed 31st Dec)5.5ft (1.7m) 13s
Most Powerful 4AM (Sat 3rd Jan)8ft (2.5m) 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 Mostly dry. Very mild (max 12°C on Mon morning, min 6°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 14°C on Wed morning, min 10°C on Tue night). Wind will be generally light.

Sat
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
2
1
2
2
2
2
3
3
3
3
3
3
3
3
3
2
1
4
4
Swell
Height Map
Wave Height (m) & direction (?)
2.2
NW
1.6
NW
1.4
NW
1.3
NW
1.3
NW
0.6
WNW
0.9
WNW
1.3
WNW
1.4
WNW
1.6
WNW
1.5
W
1.5
W
1.6
W
1.7
W
1.6
W
1.5
W
1.3
WNW
1.2
W
1.8
WNW
2.5
WNW
2.3
WNW
Period(s) (?)9101010915131213131212121312121111101212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)81650938432724614230446667381165759667497273661741533873118931588
Wind
(km/h)
20
N
10
NE
10
NE
5
NW
10
ENE
5
ENE
5
NNW
10
NE
5
E
0
NW
10
ESE
5
NNE
0
S
10
ESE
5
ESE
5
SE
10
E
20
SE
30
SSE
5
SSW
5
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
off
cross-
on
cross-
off
offglasscross-
off
glassglasscross-
off
cross-
off
glassoffoffcross-
off
offcross-
off
cross-
off
glassglass
High Tide
/ height (m)
4:15PM
1.36
5:08AM
1.88
5:52PM
1.27
5:52AM
2.01
7:27PM
1.28
6:39AM
2.15
8:45PM
1.35
7:30AM
2.27
9:51PM
1.44
8:20AM
2.35
10:47PM
1.52
9:14AM
2.40
11:37PM
1.59
10:06AM
2.40
Low Tide
/ height (m)
10:17PM
0.51
12:01PM
0.49
11:07PM
0.68
1:06PM
0.23
12:02AM
0.83
2:06PM
-0.03
1:02AM
0.95
3:02PM
-0.26
2:05AM
1.03
3:54PM
-0.41
3:07AM
1.04
4:44PM
-0.50
4:06AM
1.01
Sat
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Sunrise--7:37--7:37--7:37--7:37--7:37--7:37--7:37
Sunset4:57--4:58--4:59--4:59--5:00--5:00--5:01--
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
light rain
cloud
Rain (mm)
------------------13-
Temp. °C1071110912101012121114121114131113131110
Feels °C (?)5398698810119121191211888109
  • 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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