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:
Ruby Bay surfForecast / Nelson – Tasman Bay / New Zealand
48hr Weather and Surf, issued 6 pm Monday 15 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Ruby Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ruby Bay sea temperature is
19.4° C
(Which is 3.8°C warmer than normal for this time of year)How big are the waves at Ruby Bay today?
The current surf forecast for Ruby Bay at 11PM is: 1.3m 6s primary swell from a North direction (forecast issued at 06:00pm December 15). The wind direction is predicted to be cross-onshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 4.5ft (1.4m) | 6s |
| Evening (15 Dec) | 4.5ft (1.3m) | 6s |
Table - waves today at Ruby Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 16 | 16 | 16 | 6 | 6 | 3 | 3 | 4 | 4 | 4 | 4 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 151 | 139 | 128 | 0 | 297 | 521 | 398 | 198 | 0 | 152 | 86 | 68 | 0 | 0 | 0 | 7 | 7 | 5 | 3 | 6 | 13 | 10 | 6 | 6 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | off | cross- on | off | cross- off | off | off | off | cross- off | cross- off | cross- off | glass | on | glass | off | off | glass | on |
High Tide / height (m) | 7:45PM 3.44 | 8:11AM 3.40 | 8:33PM 3.47 | 9:09AM 3.53 | 9:18PM 3.50 | 9:58AM 3.70 | ||||||||||||||||||
Low Tide / height (m) | 1:23PM 1.55 | 1:50AM 1.49 | 2:16PM 1.50 | 2:34AM 1.43 | 3:01PM 1.44 | 3:15AM 1.37 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - |
| Sunset | - | 8:55 | - | - | - | - | - | - | - | 8:55 | - | - | - | - | - | - | - | 8:57 | - | - | - | - | - | - |
 | |  |  |  |  |  | | |  | | | | |  | | | |  | | | | | | |
Rain (mm) | - | - | - | - | 1 | 8 | 3 | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 20 | 17 | 17 | 17 | 17 | 18 | 17 | 19 | 17 | 12 | 10 | 10 | 10 | 14 | 18 | 19 | 18 | 12 | 11 | 9 | 10 | 15 | 18 |
| Feels °C (?) | 18 | 16 | 15 | 15 | 15 | 15 | 19 | 16 | 17 | 13 | 9 | 7 | 7 | 7 | 10 | 13 | 14 | 16 | 11 | 10 | 7 | 8 | 14 | 16 |
- 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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