Big Lagoon surfForecast / CAL – Humboldt / USA

information circle12 Day Weather and Surf, issued 10 pm Tuesday 29 Jul 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Big Lagoon surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Lagoon sea temperature is
14.5° C
(Which is 1.3°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Big Lagoon this week:

The surf forecast for Big Lagoon over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 30) at 5AM. The primary swell is predicted to be 0.4m and 16s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Big Lagoon in the next 12 days are 2.5m 8s and forecast to arrive on Monday (Aug 04) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 30th Jul)1.5ft (0.4m) 16s
Best Surf 2AM (Wed 6th Aug)6ft (1.8m) 7s
Most Powerful 5PM (Mon 4th Aug)8ft (2.5m) 8s

Table - best surf conditions forecast for Big Lagoon over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 17°C on Wed afternoon, min 12°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Sat afternoon, min 12°C on Fri night). Winds increasing (calm on Sun morning, fresh winds from the NNW by Mon afternoon).

Wednesday
30
Thursday
31
Friday
01
Saturday
02
Sunday
03
Monday
04
Tue
05
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SW
0.4
SW
1.3
NW
1.5
NW
0.4
SW
0.5
SW
1.4
NW
1.1
NW
0.5
SW
1.3
NW
0.4
SW
0.4
SW
1.3
NW
0.4
SW
1.8
NW
1.6
NW
1.3
NW
2.5
NNW
1.9
NW
0.5
W
1.7
NNW
Period(s) (?)161667181876166151571877787146
Wave
Graph
(?)Metric surfscale
Energy (?)126153264285230307236183255237143150345231459416346983476263427
Wind
(km/h)
5
SSE
10
NW
10
NW
5
ESE
10
NW
15
NNW
5
SE
10
NW
10
NNW
10
S
10
WNW
15
NNW
5
SSE
10
NW
10
N
0
NNE
15
NNW
30
NNW
10
NNE
20
NNW
25
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offononoffononoffononcross-
off
ononglassoncross-
on
glassoncross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
3:50AM
2.05
4:30PM
2.40
4:52AM
1.86
5:05PM
2.39
6:09AM
1.74
5:45PM
2.37
7:44AM
1.69
6:32PM
2.36
9:18AM
1.73
7:24PM
2.38
10:24AM
1.81
8:19PM
2.43
11:09AM
1.90
Low Tide
/ height (m)
10:09PM
1.08
9:52AM
0.92
11:06PM
1.03
10:26AM
1.14
12:08AM
0.97
11:02AM
1.33
1:14AM
0.90
11:48AM
1.49
2:17AM
0.79
12:51PM
1.60
3:14AM
0.67
2:03PM
1.65
4:02AM
0.54
3:07PM
1.64
Wednesday
30
Thursday
31
Friday
01
Saturday
02
Sunday
03
Monday
04
Tue
05
Sunrise-6:09--6:09--6:11--6:11--6:13--6:13--6:15-
Sunset--8:35--8:34--8:32--8:31--8:30--8:29--8:28
part cloudclearpart cloudpart cloudclearpart cloudclearpart cloudclearclearclearclearpart cloudpart cloudcloudclearclearclearclearclearclear
Rain (mm)
---------------------
Temp. °C131617151717151717141617141515141617152019
Feels °C (?)121516161616151616141516131413121412111615
  • 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 Big Lagoon (light winds from the SSE at Arcata/Eureka Airport 20 km from Big Lagoon). 0.6m 5s windswell from the NW with a 0.4m 7s swell, also from the NW and a 0.2m 11s groundswell, also from the SW. 3 swells combining to make bigger set waves.

    Big Lagoon
Expand
<
>
View all

20 km away, 1 h 23 min ago

9 km/h
SSE
0.0
14.5
Air / Water (°C)
Please reload the page to see if there are any updates.

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 Big Lagoon 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.


Information about the Big Lagoon Surf forecast

The above surf forecast table for Big Lagoon provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Big Lagoon can be found by selecting the local surf guide option on the grey menu. Our Big Lagoon 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 (Big Lagoon) 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 Big Lagoon 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.

Big Lagoon is 24 km (15 miles) from McKinleyville. If you plan a vacation in Humboldt County, look for hotels and other accommodation in McKinleyville. McKinleyville has rooms for a wide range of budgets as well as car hire and transport links.

A very large earthquake (M8.8) off Kamchatka in the far east of Russia means there are tsunami warnings in place for the Pacific coast of Japan and the wider Pacific region, even as far away as New Zealand

Nearest
Nearest
Nearest