Half Moon Bay surfForecast / Washington / USA

information circle12 Day Weather and Surf, issued 3 am Monday 02 Mar 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
9.2° C
(Which is normal for this time of year)

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 Monday (Mar 02) at 1PM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.4m and 8s. 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 2.5m 16s and forecast to arrive on Monday (Mar 09) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Mar 03) at 4PM.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Mon 2nd Mar)1.5ft (0.5m) 8s
Best Surf10PM (Fri 6th Mar)5.5ft (1.7m) 10s
Most Powerful 2AM (Mon 9th Mar)8ft (2.5m) 16s

Table - best surf conditions forecast for Half Moon Bay over the next 12 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 13mm), heaviest on Tue night. Very mild (max 11°C on Mon afternoon, min 7°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the NW by Wed night).

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Thu night. Very mild (max 10°C on Fri afternoon, min 7°C on Thu morning). Wind will be generally light.

Monday
02
Tuesday
03
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
0
0
0
0
0
0
1
0
1
0
1
1
0
0
0
2
3
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SW
0.4
W
0.6
SW
1
SW
0.4
WNW
0.4
W
0.5
W
1
W
1.9
W
2.5
W
2.3
W
1.9
W
1.8
W
1.9
W
1.7
W
1.6
W
1.7
W
2
W
2.2
W
2.1
W
2.5
W
Period(s) (?)8128810141389111110101010101111131216
Wave
Graph
(?)Metric surfscale
Energy kJ (?)55584412931658413862715101255783635736590522649951154313333001
Wind
(km/h)
10
SE
10
S
15
SSE
25
SSW
25
SSW
20
SSW
10
NNW
25
WNW
30
NW
20
WNW
15
WSW
25
SW
15
WNW
10
W
10
SW
15
WSW
20
W
20
NW
10
WSW
15
SW
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
offcross-
off
cross-
off
cross-
off
ononononcross-
on
cross-
off
oncross-
on
crosscross-
on
cross-
on
oncross-
on
crosscross-
on
High Tide
/ height (m)
11:46AM
3.02
12:42AM
2.82
12:32PM
2.97
1:15AM
2.90
1:17PM
2.87
1:48AM
2.95
1:59PM
2.73
2:18AM
2.94
2:40PM
2.56
2:47AM
2.90
3:22PM
2.38
3:16AM
2.83
4:07PM
2.19
3:46AM
2.73
Low Tide
/ height (m)
6:06PM
-0.16
6:20AM
0.50
6:42PM
-0.08
7:02AM
0.35
7:17PM
0.07
7:43AM
0.25
7:51PM
0.27
8:22AM
0.22
8:22PM
0.51
9:02AM
0.25
8:54PM
0.77
9:43AM
0.33
9:25PM
1.02
Monday
02
Tuesday
03
Wednesday
04
Thursday
05
Friday
06
Saturday
07
Sunday
08
Sunrise6:54--6:52--6:50--6:48--6:47--6:45--6:43--
Sunset-6:02--6:04--6:05--6:07--6:07--6:09--6:10-
part cloud
clear
rain showers
light rain
light rain
mod rain
rain showers
cloud
part cloud
cloud
cloud
mod rain
cloud
part cloud
light rain
cloud
light rain
cloud
cloud
cloud
light rain
Rain (mm)
--11371----8--1-3---2
Temp. °C101110101010101087899109998889
Feels °C (?)788555752244678654443
  • 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 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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