Half Moon Bay surfForecast / Washington / USA

information circle16 Day Weather and Surf, issued 4 pm Friday 15 May 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
13.9° C
(Which is 2.0°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Half Moon Bay this week:

The most powerful waves expected at Half Moon Bay in the next 16 days are 3.0m 13s and forecast to arrive on Saturday (May 16) at 8AM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8AM (Sat 16th May)10ft (3.0m) 13s

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

Moderate rain (total 14mm), heaviest on Fri afternoon. Very mild (max 11°C on Fri afternoon, min 8°C on Sun morning). Winds decreasing (fresh winds from the NW on Sat afternoon, light winds from the NE by Sun morning).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 13°C on Tue morning, min 10°C on Tue night). Wind will be generally light.

Fri
15
Saturday
16
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
1
1
0
0
0
1
3
1
0
0
1
0
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
W
14
2.2
W
14
3
W
13
2.5
W
12
2.4
WNW
12
1.7
W
11
1.6
WNW
11
1.5
WNW
10
1.1
WNW
10
1.7
W
16
1.8
W
14
1.7
W
13
2
WNW
13
1.6
WNW
12
1.5
WNW
12
1.4
WNW
11
1
WNW
11
0.9
WNW
10
1.5
WNW
10
1.6
WNW
10
1.9
WNW
9
Wave Graph
Metric surfscale
Energy kJ
411
1755
2710
1760
1551
682
611
442
245
1434
1315
1003
1295
692
579
447
249
184
483
502
559
Wind (km/h)
25
W
30
W
25
NW
30
NW
20
NNW
10
WNW
20
WNW
20
NW
20
WNW
20
WNW
10
NW
15
WNW
25
NW
25
NW
15
WNW
15
WNW
10
W
15
NW
25
NW
15
NW
15
NW
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
on
on
on
on
on
cross-on
cross-on
on
on
on
on
High Tide
00:21AM3.08m
1:41PM2.44m
1:04AM3.18m
2:33PM2.48m
1:51AM3.21m
3:25PM2.47m
2:39AM3.15m
4:18PM2.43m
3:31AM3.01m
5:12PM2.37m
4:27AM2.80m
6:08PM2.34m
5:29AM2.55m
Low Tide
6:04PM0.67m
6:58AM-0.62m
6:51PM0.75m
7:45AM-0.75m
7:39PM0.83m
8:34AM-0.77m
8:29PM0.89m
9:24AM-0.69m
9:22PM0.95m
10:16AM-0.54m
10:20PM0.99m
11:11AM-0.34m
11:26PM1.01m
12:07PM-0.12m
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
cloud
clear
cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:37
5:37
5:35
5:35
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:44
8:45
8:46
8:47
8:49
8:50
8:51
8:52
5
4
2
2
1
Temp °C
11
10
10
10
10
10
11
11
11
11
12
13
12
11
11
10
11
12
12
11
12
6
5
5
3
3
7
7
6
7
7
8
10
7
6
8
6
9
9
8
7
8
Swell 1
Height (m)
Direction
Period (s)
1
W
14
0.4
SW
16
2.5
W
13
0.4
SW
15
2.1
W
12
1.7
W
11
0.4
SW
14
0.3
SW
14
0.6
W
17
1.7
W
16
1.8
W
14
1.7
W
13
1.7
WNW
13
1.6
WNW
12
1.5
WNW
12
0.4
SW
21
1
WNW
11
0.9
WNW
10
0.5
SW
15
0.4
SW
15
1.9
WNW
9
Energy kJ
411
89
2345
77
1227
682
53
33
195
1434
1315
1003
995
692
579
117
249
184
109
55
559
Swell 2
Height (m)
Direction
Period (s)
0.5
SW
16
0.1
SW
12
0.4
SW
15
0.1
W
20
0.4
SW
15
0.4
SW
15
0.1
SW
18
0.2
W
20
0.4
W
13
0.2
WSW
18
0.3
SW
13
0.4
SW
18
0.4
SW
17
0.4
SW
17
0.5
SW
16
0.4
SW
16
0.4
SW
16
0.5
SW
16
0.5
SW
19
0.4
SW
19
0.5
SW
15
Energy kJ
127
6
77
7
79
75
13
30
54
33
28
108
71
70
132
67
64
118
184
133
113
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
20
0.1
SW
18
0.1
SW
18
0.3
SW
14
0.2
WSW
18
0.1
SW
26
0.2
WSW
24
0.1
SW
24
0.2
WSW
21
Energy kJ
15
13
12
32
33
26
54
22
44
Wind waves
Height (m)
Direction
Period (s)
1.7
W
7
2.2
W
14
3
W
13
2.5
W
12
2.4
WNW
12
1.6
WNW
11
1.5
WNW
10
1.1
WNW
10
2
WNW
13
1.4
WNW
11
0.4
NW
3
1.5
WNW
10
1.6
WNW
10
Energy kJ
306
1755
2710
1760
1551
611
442
245
1295
447
2
483
502
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
2
2
1
2
4
3
3
2
4
3
1
2
1
2
3
2
1
Distance (km)
141
141
1119
1119
141
141
143
128
366
259
4
144
960
128
167
259
62
70
765
70
144
Best forecast wave conditions in Washington State
Rating
(10 max)
2
2
2
2
1
1
4
2
2
1
2
2
3
1
Best forecast wave conditions in United States
Rating
(10 max)
3
4
4
3
7
4
2
4
4
2
4
4
4
4
3
4
3
3
3
3
3
Header Global
Rating
(10 max)
4
4
6
4
7
4
4
4
4
4
4
4
6
5
9
6
5
9
7
6
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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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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