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Surf Forecasts:
Half Moon Bay surfForecast / Washington / USA
48hr Weather and Surf, issued 3 pm Tuesday 09 Dec 2025 PSTForecast 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
10.8° C
(Which is slightly warmer than usual)How big are the waves at Half Moon Bay today?
The current surf forecast for Half Moon Bay at 11PM is: 2.5m 12s primary swell from a West direction and 2.4m 12s secondary swell from a West-northwest direction (forecast issued at 03:00pm December 09). The wind direction is predicted to be cross-shore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Dec) | - | - |
| Afternoon (09 Dec) | 10ft (3.0m) | 14s |
| Evening (09 Dec) | 8ft (2.5m) | 13s |
Table - waves today at Half Moon Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | |||||||||||||||||||||
| 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 13 | 12 | 12 | 8 | 9 | 9 | 10 | 10 | 10 | 11 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3762 | 2975 | 2243 | 2120 | 3225 | 1435 | 2363 | 2705 | 3001 | 3113 | 3075 | 3071 | 5599 | 4131 | 3475 | 2972 | 2650 | 2187 | 1929 | 1614 | 1370 | 1094 | 946 | 784 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | off | cross | cross | cross | cross- off | cross- off | cross | cross | cross | cross | cross- on | on | on | glass | glass | cross | cross- off | cross- off | off | off | cross- off | cross |
High Tide / height (m) | 3:35PM 2.82 | 5:08AM 2.59 | 4:34PM 2.53 | 5:59AM 2.59 | 5:39PM 2.26 | 6:48AM 2.62 | ||||||||||||||||||
Low Tide / height (m) | 10:11PM -0.03 | 10:39AM 1.14 | 11:01PM 0.23 | 11:48AM 1.08 | 11:53PM 0.49 | |||||||||||||||||||
Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:52 |
| Sunset | - | 4:27 | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - | - | 4:27 | - | - | - | - | - | - |
 |  |  |  | | | | | | | | | | | | | | | |  | | | | | |
Rain (mm) | - | 2 | 4 | 8 | 4 | 7 | 2 | 2 | 2 | 2 | 1 | 1 | 3 | 3 | 2 | - | - | 1 | 1 | - | - | 1 | - | - |
| Temp. °C | 9 | 9 | 8 | 13 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 9 | 11 | 12 | 13 | 15 |
| Feels °C (?) | 6 | 5 | 3 | 8 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 6 | 8 | 8 | 8 | 9 | 8 | 7 | 5 | 6 | 10 | 11 | 12 | 13 |
- 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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