Half Moon Bay Surf Break

Lat Long: 46.91° N 124.12° W

Half Moon Bay Surf Forecast and Surf Report

Issued: 10 pm 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Half Moon Bay sea temperature is
14.2° C
0.9° 

Half Moon Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Half Moon Bay surf forecast from 20 Jul 2026:

  • Best quality surf: Saturday 25 Jul, 8PM (local time) - 3ft (0.9m), 21s period, SW swell with glassy winds.
  • Most powerful swell: Saturday 25 Jul, 8PM (local time) - 3ft (0.9m), 21s period, SW swell with 763 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 21 Jul, 2AM (local time) - 1.5ft (0.5m), 16s period with SW swell.

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 Tuesday (Jul 21) at 2AM. The primary swell is predicted to be 0.5m and 16s period with a secondary swell of 1.0m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Half Moon Bay in the next 16 days are 0.9m 21s and forecast to arrive on Saturday (Jul 25) at 8PM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 21st Jul)1.5ft (0.5m) 16s
Best Surf 8PM (Sat 25th Jul)3ft (0.9m) 21s
Most Powerful 8PM (Sat 25th Jul)3ft (0.9m) 21s

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


Short Range Forecast

Mostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Wed night, min 13°C on Thu night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
2
1
0
2
1
0
1
1
1
1
1
0
2
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
WNW
8
0.6
SW
17
0.6
SW
17
1
WNW
8
0.6
SW
16
0.6
SW
16
0.6
SW
15
1.1
WNW
8
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.1
WNW
9
1.2
WNW
9
0.5
SW
26
0.4
SW
26
0.8
SW
24
0.5
SW
23
0.9
SW
21
0.9
SW
21
Wave Graph
Metric surfscale
Energy kJ
227
243
179
124
203
203
153
157
168
168
172
180
237
329
192
661
268
664
664
Wind (km/h)
10
N
10
N
15
NW
5
NNW
10
WNW
15
NW
0
WNW
10
WSW
15
WNW
5
SW
15
SW
15
SW
15
SW
15
SSW
20
W
10
W
10
SSW
10
WSW
10
S
Wind State
cross-on
cross-on
on
glassy
on
on
glassy
cross
cross-on
cross
cross
cross
cross
cross-off
cross-on
cross-on
cross-off
cross-on
cross-off
High Tide
5:49AM2.06m
6:22PM2.56m
6:53AM1.83m
7:07PM2.52m
8:07AM1.69m
7:55PM2.48m
9:28AM1.68m
8:47PM2.48m
10:45AM1.76m
9:42PM2.50m
11:44AM1.88m
10:34PM2.56m
Low Tide
11:44PM0.42m
11:39AM0.35m
00:45AM0.41m
12:25PM0.67m
1:48AM0.38m
1:18PM0.95m
2:53AM0.32m
2:20PM1.15m
3:53AM0.23m
3:24PM1.24m
4:47AM0.12m
4:24PM1.25m
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:41
5:41
5:43
5:45
5:46
5:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:04
9:02
9:01
9:00
9:00
8:59
8:57
 mm
1
Temp °C
15
20
22
19
20
20
17
17
17
16
15
15
14
14
14
14
14
15
14
Feels °C
14
19
19
18
19
17
15
16
15
16
14
13
12
11
12
11
13
14
14
  • 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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