Third Reef surfForecast / CAL – Humboldt / USA

information circle48hr Weather and Surf, issued 10 pm Monday 18 May 2026 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
9.7° C
(Which is 2.2°C colder than average for this time of year)

How big are the waves at Third Reef today?

The current surf forecast for Third Reef at 4AM is: 2.0m 15s primary swell from a Northwest direction and 0.4m 17s secondary swell from a Southwest direction (forecast issued at 10:00pm May 18). The wind direction is predicted to be cross-offshore and the swell rating is 4.

Time (PDT) & DateWave HeightWave Period
Morning (19 May)4.5ft (1.3m)14s
Afternoon (19 May)7ft (2.1m)14s
Evening (19 May)7ft (2.1m)13s

Table - waves today at Third Reef. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 21°C on Tue afternoon, min 10°C on Mon night). Winds decreasing (fresh winds from the NW on Wed afternoon, calm by Thu afternoon).

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
Rating
(10 max)
1
3
4
4
4
1
1
0
2
2
5
3
4
0
0
0
2
2
4
3
3
2
3
3
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.8
NW
9
1.1
WNW
16
2
NW
16
2
NW
15
1.3
WNW
14
2.1
NW
14
2.1
NW
14
1.3
WNW
13
2.1
NW
13
1.9
NW
13
2.4
NW
13
2.5
NW
13
2.5
NW
13
2.1
NW
12
2.3
NW
12
2.3
NW
12
2.1
NW
12
1.9
NW
11
2.1
NW
9
2
NW
11
1.9
NW
11
1.9
NW
10
2.1
NW
10
2
NW
10
Wave Graph
Metric surfscale
Energy kJ
490
620
1884
1672
638
1736
1760
624
1430
1147
1922
2114
2283
1189
1398
1374
1111
850
680
868
804
789
845
784
Wind (km/h)
20
N
15
NNE
15
NNE
15
NNE
10
NNE
15
NW
20
NW
25
NNW
20
N
15
NNE
15
NNE
15
N
15
N
20
NW
30
NW
25
NNW
20
NNW
15
N
15
NNE
10
NNE
5
N
10
WNW
10
NW
0
NW
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross
cross-off
cross
cross
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross
cross-on
cross-on
glassy
High Tide
00:44AM2.12m
3:13PM1.40m
1:37AM2.01m
4:11PM1.40m
2:34AM1.85m
Low Tide
6:46PM0.82m
8:11AM-0.66m
7:40PM0.87m
9:06AM-0.55m
8:45PM0.89m
10:03AM-0.39m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:27
8:28
8:29
8:30
Temp °C
16
10
10
11
14
18
17
21
16
11
10
11
14
18
19
19
14
10
10
12
15
15
15
14
12
6
7
7
11
14
13
15
12
7
7
8
11
13
12
14
10
7
7
10
14
13
14
14
Swell 1
Height (m)
Direction
Period (s)
0.8
WNW
16
1.1
WNW
16
2
NW
16
2
NW
15
1.6
NW
9
2.1
NW
14
0.4
SW
16
1.3
WNW
13
0.4
SW
16
1.9
NW
13
1.9
NW
13
1.9
NW
13
1.9
NW
13
0.5
SW
21
0.4
SW
16
0.4
SW
16
0.5
SW
16
0.5
SW
16
1.7
NW
11
2
NW
11
1.9
NW
11
1.9
NW
10
1.9
NW
10
2
NW
10
Energy kJ
330
620
1884
1672
423
1736
69
624
96
1147
1147
1204
1167
224
90
89
122
119
664
868
804
789
789
784
Swell 2
Height (m)
Direction
Period (s)
0.3
S
16
0.3
SW
17
0.4
SW
17
0.4
SW
17
1.3
WNW
14
0.3
SW
16
0.4
S
15
0.4
SW
16
0.3
S
15
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
21
0.4
SW
16
0.4
S
14
0.4
S
14
0.3
S
14
0.4
S
14
0.9
NNW
9
0.4
SW
15
0.6
SSW
19
0.6
SW
19
0.5
SW
19
0.5
SW
15
Energy kJ
46
47
76
70
638
42
70
69
39
96
96
68
162
65
61
59
33
57
111
79
251
303
184
113
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
16
0.3
S
16
0.3
S
16
0.3
S
16
0.4
SW
16
0.3
S
15
0.3
SW
24
0.4
S
15
0.2
S
12
0.3
S
15
0.3
S
15
0.3
S
14
0.4
SW
16
0.3
S
14
0.4
SW
21
0.2
SSW
21
0.1
SW
21
0.1
SW
21
0.5
SW
15
0.4
S
14
0.4
SW
15
0.4
SW
15
0.4
SW
15
0.4
S
13
Energy kJ
43
46
46
45
69
41
87
69
11
39
38
37
66
36
117
44
18
18
112
57
78
79
80
54
Wind waves
Height (m)
Direction
Period (s)
1.8
NW
9
1.6
NW
9
2.1
NW
14
1.8
NW
8
2.1
NW
13
2
NW
8
2.4
NW
13
2.5
NW
13
2.5
NW
13
2.1
NW
12
2.3
NW
12
2.3
NW
12
2.1
NW
12
1.9
NW
11
2.1
NW
9
2.1
NW
10
Energy kJ
490
384
1760
413
1430
441
1922
2114
2283
1189
1398
1374
1111
850
680
845
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
4
3
3
2
4
4
5
5
5
3
3
4
4
4
4
3
4
4
4
3
Distance (km)
57
29
0
0
0
193
243
385
57
29
0
3
3
193
238
211
211
3
0
0
3
169
3
0
Best forecast wave conditions in Humboldt County
Rating
(10 max)
4
4
4
4
4
5
5
5
4
4
4
4
4
3
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
5
5
5
4
3
4
4
4
4
4
4
4
4
3
Header Global
Rating
(10 max)
4
4
4
4
4
4
4
5
5
5
4
4
4
5
5
5
4
5
4
4
4
5
4
4
  • 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

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.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest