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Surf Forecasts:

Third Reef surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 10 am Wednesday 10 Sep 2025 PDT
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
15.8° C
 (Which is 1.4°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 Wednesday (Sep 10) at 11PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.7m and 12s. Another secondary swell of 0.8m and 6s is also forecast. 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 2.0m 10s and forecast to arrive on Sunday (Sep 14) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 18s period and expected on Tuesday (Sep 16) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 10th Sep)3ft (0.9m) 14s
Best Surf 5AM (Sat 13th Sep)5ft (1.5m) 13s
Most Powerful 5PM (Sun 14th Sep)6.5ft (2.0m) 10s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Very mild (max 18°C on Fri morning, min 14°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Sun afternoon, min 12°C on Sun night). Winds increasing (light winds from the NNE on Sat morning, fresh winds from the NW by Mon afternoon).

Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
3
0
0
3
1
1
3
1
1
2
0
0
3
0
0
2
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
SSW
0.8
SSW
0.9
SSW
0.8
SSW
0.7
SW
0.7
NW
1.1
NW
1.3
WNW
1.4
WNW
1.5
WNW
1.4
WNW
1.2
WNW
1.2
WNW
2
WNW
2.1
NW
1.6
NW
1.6
NW
1.4
NW
0.7
SSW
0.7
SSW
1.3
NW
Period(s) (?)15151414131615141313121211108109918187
Wave
Graph
(?)Metric surfscale
Energy (?)58558264940350454783997797198183864853510321266668508430638558310
Wind
(km/h)
10
WNW
15
WNW
10
NNE
15
WNW
15
WNW
10
NNE
15
WNW
15
NW
15
NNE
10
WNW
15
WNW
5
N
15
NW
30
NNW
15
NNE
20
NNW
30
NNW
15
NNE
10
W
5
NW
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		cross-
off		oncross-
on		cross-
off		cross-
on		cross-
on		cross-
off		ononcrosscross-
on		cross-
on		cross-
off		cross-
on		cross-
on		cross-
off		oncross-
on		cross-
off
High Tide
/ height (m)
1:35PM
1.98
2:28AM
1.62
2:12PM
2.03
3:31AM
1.46
2:54PM
2.03
4:47AM
1.32
3:43PM
1.98
6:21AM
1.26
4:44PM
1.92
7:57AM
1.28
6:00PM
1.86
9:04AM
1.36
7:22PM
1.83
Low Tide
/ height (m)
8:09PM
0.01
7:58AM
0.53
9:05PM
-0.04
8:37AM
0.71
10:09PM
-0.05
9:23AM
0.88
11:21PM
-0.04
10:24AM
1.01
12:36AM
-0.03
11:49AM
1.07
1:49AM
-0.05
1:22PM
1.04
2:52AM
-0.06
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise6:52--6:52--6:54--6:54--6:54--6:56--6:56--
Sunset-7:32--7:31--7:30--7:28--7:27--7:24--7:22-
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
Rain (mm)
---------------------
Temp. °C171716171716181818171716182117192116171718
Feels °C (?)161516151516161717161617161614141412151617
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for CAL - Humboldt

  1. weather stationWind Update Continuing clean conditions at Third Reef (calm at Benbow wx 25 km from Third Reef). 1.1m 6s windswell from the WNW with a 0.7m 13s groundswell, also from the WNW and a 0.6m 15s groundswell, also from the SSW. 3 swells combining to make bigger set waves.

    1 hour 8 minutes ago Third Reef
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25 km away, 1 h 8 min ago

0 km/h
N
0.0
15.8
Air / Water (°C)
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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Third Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Third Reef at:
surf-forecast.com

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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