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:
The Glen surfForecast / Nelson – Tasman Bay / New Zealand
48hr Weather and Surf, issued 6 am Saturday 13 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
The Glen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Glen sea temperature is
19.4° C
(Which is 4.0°C warmer than normal for this time of year)How big are the waves at The Glen today?
The current surf forecast for The Glen at 8AM is: 0.2m 15s primary swell from a North direction (forecast issued at 06:00am December 13). An open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 0.5ft (0.2m) | 15s |
| Afternoon (13 Dec) | 0.5ft (0.2m) | 15s |
| Evening (13 Dec) | 0.5ft (0.2m) | 14s |
Table - waves today at The Glen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 4 | 4 | 14 | 4 | 4 | 4 | 5 | 5 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 4 | 4 | 12 | 19 | 4 | 11 | 6 | 29 | 55 | 80 | 80 | 74 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | glass | cross- on | cross- on | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on | glass | glass | cross | glass | on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 5:07AM 2.59 | 5:29PM 2.66 | 6:09AM 2.56 | 6:31PM 2.59 | 7:09AM 2.59 | 7:29PM 2.59 | ||||||||||||||||||
Low Tide / height (m) | 11:08AM 0.90 | 11:47PM 0.82 | 12:15PM 0.95 | 12:48AM 0.83 | 1:19PM 0.94 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - | - | - | 8:53 | - | - |
 |  | | | |  | | | | | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 13 | 16 | 17 | 17 | 18 | 15 | 13 | 13 | 13 | 17 | 19 | 19 | 18 | 15 | 14 | 13 | 14 | 18 | 19 | 19 | 18 | 17 | 17 |
| Feels °C (?) | 9 | 12 | 15 | 15 | 15 | 17 | 14 | 12 | 13 | 12 | 16 | 17 | 17 | 15 | 15 | 14 | 12 | 13 | 16 | 14 | 14 | 15 | 15 | 15 |
- 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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