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:
Tennis Courts surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 pm Friday 12 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Tennis Courts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tennis Courts sea temperature is
25.9° C
(Which is slightly warmer than usual)How big are the waves at Tennis Courts today?
The current surf forecast for Tennis Courts at 12AM is: 0.5m 8s primary swell from a East direction (forecast issued at 07:00pm December 12). An open ocean swell of 1.0m 11s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 1.5ft (0.5m) | 8s |
| Afternoon (13 Dec) | 3.5ft (1.0m) | 4s |
| Evening (13 Dec) | 3.5ft (1.1m) | 5s |
Table - waves today at Tennis Courts. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 12 | 4 | 4 | 5 | 5 | 5 | 8 | 8 | 4 | 7 | 4 | 4 | 8 | 13 | 13 | 5 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 31 | 31 | 31 | 32 | 33 | 31 | 28 | 31 | 39 | 46 | 55 | 60 | 19 | 19 | 6 | 84 | 6 | 5 | 10 | 0 | 0 | 13 | 8 | 13 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | glass | glass | on | cross- on | cross- off | cross- on | cross- on |
High Tide / height (m) | 12:34AM 0.44 | 10:54AM 0.36 | 1:13AM 0.51 | 11:45AM 0.30 | 1:48AM 0.57 | 12:35PM 0.25 | ||||||||||||||||||
Low Tide / height (m) | 5:18PM 0.03 | 6:19AM 0.26 | 5:46PM 0.02 | 7:46AM 0.23 | 6:12PM 0.02 | 8:52AM 0.20 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:01 | - | - |
| Sunset | 5:50 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - |
 |  | | | | | | | |  | | | | | |  | | | | | |  | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | - | - | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | - |
| Temp. °C | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 22 | 21 | 23 |
| Feels °C (?) | 26 | 25 | 25 | 25 | 24 | 23 | 24 | 23 | 24 | 24 | 23 | 25 | 25 | 27 | 27 | 26 | 26 | 27 | 27 | 24 | 25 | 24 | 20 | 23 |
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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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