Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Oceanside Harbor surfForecast / CAL – San Diego County / USA
48hr Weather and Surf, issued 9 pm Thursday 11 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Oceanside Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Oceanside Harbor sea temperature is
17.0° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Oceanside Harbor today?
The current surf forecast for Oceanside Harbor at 12AM is: 0.5m 13s primary swell from a South direction and 0.3m 18s secondary swell from a West-northwest direction (forecast issued at 09:00pm December 11). The wind direction is predicted to be cross-offshore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | - | - |
| Evening (12 Dec) | 1.5ft (0.5m) | 13s |
Table - waves today at Oceanside Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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 | 1 PM | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 12 | 16 | 16 | 16 | 16 | 13 | 13 | 15 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 90 | 89 | 101 | 99 | 92 | 85 | 83 | 79 | 73 | 71 | 70 | 45 | 66 | 66 | 41 | 41 | 34 | 33 | 34 | 54 | 75 | 75 | 75 | 75 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- off | glass | glass | glass | cross- on | cross- on | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross | cross | glass | cross- on | glass | cross | cross- on | cross- on |
High Tide / height (m) | 4:03AM 1.83 | 3:47PM 1.42 | 4:41AM 1.91 | 5:14PM 1.38 | 5:13AM 1.99 | |||||||||||||||||||
Low Tide / height (m) | 8:55PM 0.65 | 10:33AM 1.00 | 9:43PM 0.79 | 11:36AM 0.81 | 10:28PM 0.91 | 12:22PM 0.64 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 4:43 | - | - | - | - | - | - | - | 4:43 | - | - | - | - | - | - | - | 4:43 |
 | | | |  | | |  |  | | | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 18 | 18 | 18 | 19 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 19 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 19 | 20 | 19 |
| Feels °C (?) | 20 | 19 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 18 | 16 | 18 | 18 | 18 | 18 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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