Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 3 pm Wednesday 31 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
13.3° C
(Which is 1.6°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 Thursday (Jan 01) at 1AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.2m and 13s. 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 4.5m 11s and forecast to arrive on Saturday (Jan 03) at 10PM. 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 Saturday (Jan 03) at 4PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 1st Jan)4.5ft (1.4m) 11s
Best Surf 1PM (Tue 6th Jan)7ft (2.1m) 10s
Most Powerful10PM (Sat 3rd Jan)15ft (4.5m) 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 Heavy rain (total 67mm), heaviest during Fri night. Very mild (max 16°C on Fri morning, min 12°C on Wed afternoon). Winds increasing (calm on Wed afternoon, near gales from the SSE by Fri night).

Days 3-6 Weather Summary Heavy rain (total 79mm), heaviest during Sun afternoon. Very mild (max 14°C on Sat afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SSE on Sat afternoon, calm by Tue morning).

Wed
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
3
3
2
0
0
0
0
0
0
0
0
3
2
0
0
1
3
3
4
3
2
Swell
Height Map
Wave Height (m) & direction (?)
1.4
W
1.4
W
1.3
W
1.2
W
1.1
WNW
0.9
WNW
0.9
NW
0.8
WNW
0.6
NW
0.6
NW
4
SSW
3
SSW
2.5
SW
1.9
SW
1.1
W
1.8
WNW
2.3
WNW
1.7
WNW
2.1
NW
1.6
NW
0.4
WNW
Period(s) (?)111112111110131312121110109912111010923
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5025104563512971462532061161033722198012975671948721216588813440213
Wind
(km/h)
5
NE
15
ENE
10
ESE
30
SSE
25
SSE
30
SE
35
SSE
35
SSE
40
SSE
50
SSE
40
S
25
SE
25
S
45
S
40
SSE
40
SSE
15
SE
15
ENE
5
SE
10
ENE
5
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoffcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
crosscrosscross-
off
cross-
off
cross-
off
offglassoffcross-
off
High Tide
/ height (m)
Low Tide
/ height (m)
Wed
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Sunrise--7:37--7:37--7:37--7:37--7:37--7:37--7:37
Sunset5:00--5:00--5:01--5:02--5:04--5:05--5:05--
light rain
heavy rain
heavy rain
mod rain
light rain
cloud
light rain
heavy rain
rain showers
light rain
heavy rain
heavy rain
heavy rain
rain showers
rain showers
rain showers
rain showers
part cloud
clear
clear
part cloud
Rain (mm)
21111104-2243421121614363----
Temp. °C12131313141615141414131213131111101212910
Feels °C (?)10111289987654876335111167
  • 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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