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Surf Forecasts:

Half Moon Bay surfForecast / Washington / USA

information circle12 Day Weather and Surf, issued 9 pm Friday 16 Jan 2026 PST
Forecast update in hr  min  s Forecast update imminent
Half Moon Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Half Moon Bay sea temperature is
10.0° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Half Moon Bay this week:

The surf forecast for Half Moon Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jan 17) at 4PM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.4m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Half Moon Bay in the next 12 days are 1.7m 13s and forecast to arrive on Friday (Jan 23) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Jan 17) at 4AM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sat 17th Jan)2.5ft (0.7m) 15s
Best Surf 1AM (Tue 20th Jan)4ft (1.2m) 16s
Most Powerful 4AM (Fri 23rd Jan)5.5ft (1.7m) 13s

Table - best surf conditions forecast for Half Moon Bay 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 11°C on Fri night, min 7°C on Sat night). Wind will be generally light.

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

Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Fri
23
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
2
2
2
2
2
1
1
3
3
2
2
1
2
2
2
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.5
W
0.6
W
0.7
W
0.9
W
0.9
WSW
0.9
WSW
0.8
WSW
0.4
W
0.7
W
1.2
W
1.3
W
1.3
W
1.2
W
0.9
W
0.6
W
0.9
W
1
W
1
W
0.8
W
1.1
W
1.3
W
Period(s) (?)111615151312112018161514131218161514171515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)57188222343235210143121325750726678492240221407418407350563716
Wind
(km/h)
25
ENE
25
E
15
ENE
15
E
15
E
5
NE
15
E
20
E
15
NE
10
ENE
10
ENE
10
NW
10
E
20
E
15
E
5
SSE
15
SSW
15
WSW
35
W
45
WNW
45
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscross-
off		cross-
off		crosscross-
off		cross-
off		oncross-
off		cross-
off		cross-
off		offcross-
off		crosscross-
on		cross-
on		on
High Tide
/ height (m)
12:23AM
2.36
11:21AM
2.97
12:58AM
2.45
12:02PM
3.00
1:32AM
2.53
12:42PM
3.00
2:05AM
2.59
1:20PM
2.94
2:38AM
2.65
2:00PM
2.84
3:09AM
2.71
2:41PM
2.68
3:42AM
2.77
3:28PM
2.48
Low Tide
/ height (m)
5:17AM
1.39
6:09PM
-0.04
6:00AM
1.29
6:44PM
-0.12
6:40AM
1.18
7:18PM
-0.17
7:20AM
1.06
7:51PM
-0.17
8:00AM
0.94
8:24PM
-0.09
8:43AM
0.82
8:56PM
0.06
9:30AM
0.71
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Fri
23
Sunrise-7:56--7:54--7:54--7:54--7:52--7:52--7:50-
Sunset--4:57--4:58--4:59--5:00--5:01--5:04--5:05
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
rain showers
light rain
rain showers
Rain (mm)
------------------421
Temp. °C111011109111010119887810899886
Feels °C (?)4565685675554364562-3-5
  • 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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Latest Updates

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Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Half Moon Bay 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 Half Moon Bay at:
surf-forecast.com

Information about the Half Moon Bay Surf forecast

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

Are you planning a vacation in Washington State? If you are looking for accommodation near Half Moon Bay, camping, hotels and condos and appartments in Washington State, consider staying in Aberdeen which is 25 km (16 miles) away. Other places in and around Washington State where you can find information about places to rent, and car hire include Astoria which is 83 km (52 miles) away, Centralia and Olympia.

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