Half Moon Bay surfForecast / Washington / USA

information circle16 Day Weather and Surf, issued 4 am Thursday 23 Apr 2026 PDT
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
11.8° C
(Which is 1.3°C warmer than 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Apr 23) at 2PM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.7m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Half Moon Bay in the next 16 days are 1.6m 16s and forecast to arrive on Wednesday (Apr 29) at 11AM. 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+) 2PM (Thu 23rd Apr)5.5ft (1.7m) 10s
Best Surf 2PM (Thu 23rd Apr)5.5ft (1.7m) 10s
Most Powerful11AM (Wed 29th Apr)5ft (1.6m) 16s

Table - best surf conditions forecast for Half Moon Bay over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 13°C on Fri morning, min 8°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 10°C on Sun afternoon, min 9°C on Sun morning). Wind will be generally light.

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
1
1
0
1
0
0
1
2
1
1
1
0
1
0
2
2
3
0
2
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.3
W
12
1.6
WNW
10
1.3
WNW
10
1.3
WNW
10
1.2
WNW
9
1.1
WNW
9
0.5
W
16
0.7
W
16
1
W
14
1.4
WNW
14
1.4
WNW
13
1.5
WNW
12
1.2
WNW
10
1.3
WNW
10
1.2
WNW
10
0.7
W
12
0.7
W
20
1.1
W
18
1.6
W
16
1.6
WNW
15
1.3
W
14
Wave Graph
Metric surfscale
Energy kJ
472
480
318
365
216
184
122
240
416
743
700
579
282
315
248
134
365
733
1281
1137
684
Wind (km/h)
15
S
10
SSW
10
NE
10
NE
25
NNW
10
N
5
W
20
NW
5
WNW
10
SW
15
WSW
15
SW
15
SW
15
W
10
WSW
15
WNW
10
W
10
NNE
10
NNE
25
NNW
10
NNE
cross-off
cross-off
cross
cross
on
cross-on
cross-on
on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross-on
on
cross-on
High Tide
7:34PM2.17m
6:53AM2.48m
8:42PM2.23m
8:13AM2.35m
9:41PM2.36m
9:28AM2.30m
10:29PM2.51m
10:35AM2.30m
11:10PM2.65m
11:32AM2.33m
11:46PM2.76m
12:23PM2.35m
00:20AM2.83m
Low Tide
12:32PM-0.01m
00:46AM1.21m
1:41PM0.13m
2:11AM1.10m
2:47PM0.21m
3:27AM0.87m
3:45PM0.27m
4:29AM0.59m
4:34PM0.33m
5:19AM0.32m
5:18PM0.42m
6:02AM0.09m
5:57PM0.54m
cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:13
6:11
6:09
6:07
6:05
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:15
8:15
8:17
8:19
8:20
8:22
8:22
Temp °C
9
10
10
13
13
11
11
12
10
9
10
10
10
10
10
10
10
10
14
17
13
5
6
8
11
8
7
8
8
6
6
6
6
7
7
7
7
7
7
12
13
8
Swell 1
Height (m)
Direction
Period (s)
1.5
WNW
10
1.6
WNW
10
1.3
WNW
10
1.3
WNW
10
0.5
W
11
1.1
WNW
9
0.7
WNW
8
1
WNW
9
1
W
14
1.4
WNW
14
1.4
WNW
13
1.5
WNW
12
1.2
WNW
10
1.3
WNW
10
1.2
WNW
10
1
WNW
8
1.2
WNW
11
1.1
W
18
1.6
W
16
1.6
WNW
15
1.3
W
14
Energy kJ
428
480
318
365
59
184
54
158
416
743
700
579
282
315
248
128
313
733
1281
1137
684
Swell 2
Height (m)
Direction
Period (s)
1.3
W
12
0.7
W
12
0.7
W
12
0.4
W
16
0.5
W
16
0.6
W
14
0.6
WNW
10
0.7
W
16
1
WNW
9
0.1
SW
13
0.1
SW
13
0.2
SSW
13
0.7
W
12
0.2
WSW
15
0.4
W
12
0.7
W
12
0.7
W
20
0.9
WNW
7
0.2
WSW
16
0.4
SW
16
0.4
WNW
6
Energy kJ
472
144
132
79
119
144
77
240
151
7
7
17
144
21
45
134
365
66
25
64
14
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
12
0.3
W
17
0.3
W
16
0.1
SW
11
0.2
WSW
15
0.3
SW
15
0.5
W
16
0.3
WNW
12
0.2
WSW
14
0.1
S
13
0.1
SW
13
0.1
SW
16
0.3
SW
14
0.1
SW
12
0.3
SW
15
0.3
W
22
0.2
SSW
12
0.7
W
10
0.3
SW
13
0.1
SW
11
0.2
WSW
15
Energy kJ
14
50
46
5
21
34
122
28
18
3
7
11
32
6
34
82
15
108
28
5
22
Wind waves
Height (m)
Direction
Period (s)
1.2
WNW
9
Energy kJ
216
Nearest Offshore or Glassy
Rating
(10 max)
3
3
1
2
1
1
1
3
2
3
2
2
2
1
2
1
3
2
3
2
2
Distance (km)
0
0
4
5
149
4
141
277
1
0
160
0
0
1
0
141
117
4
4
141
4
Best forecast wave conditions in Washington State
Rating
(10 max)
3
4
3
3
1
2
1
3
3
2
2
2
1
2
1
3
4
4
2
4
Best forecast wave conditions in United States
Rating
(10 max)
3
4
3
3
3
3
3
3
3
3
3
3
3
1
2
2
3
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
5
4
4
4
4
6
6
8
5
6
6
4
6
9
5
8
5
6
  • 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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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 16 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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