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:
Helena Bay surfForecast / Northland / New Zealand
48hr Weather and Surf, issued 6 am Wednesday 17 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Helena Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Helena Bay sea temperature is
20.3° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Helena Bay today?
The current surf forecast for Helena Bay at 11AM is: 0.8m 8s primary swell from a East-northeast direction and 0.3m 10s secondary swell from a North direction (forecast issued at 06:00am December 17). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 2.5ft (0.8m) | 8s |
| Afternoon (17 Dec) | 2.5ft (0.7m) | 8s |
| Evening (17 Dec) | 2.5ft (0.7m) | 8s |
Table - waves today at Helena Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 8 | 12 | 8 | 8 | 8 | 8 | 8 | 16 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 81 | 72 | 66 | 64 | 62 | 62 | 55 | 82 | 56 | 55 | 49 | 51 | 50 | 65 | 62 | 60 | 60 | 51 | 84 | 75 | 73 | 73 | 73 | 74 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | cross- off | off | off | off | off | off | glass | cross | glass | cross- off | off | off | off | cross- off | cross | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 6:15AM 1.75 | 6:21PM 1.72 | 7:01AM 1.80 | 7:07PM 1.74 | 7:45AM 1.85 | 7:51PM 1.76 | ||||||||||||||||||
Low Tide / height (m) | 12:20PM 0.58 | 12:39AM 0.38 | 1:08PM 0.55 | 1:23AM 0.35 | 1:54PM 0.52 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:34 | - | - | - | - | - | - | - | 8:35 | - | - | - | - | - | - | - | 8:35 | - | - |
 |  |  | | | | |  | |  | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 14 | 18 | 19 | 19 | 19 | 15 | 14 | 13 | 15 | 18 | 20 | 19 | 19 | 15 | 14 | 13 | 14 | 20 | 22 | 22 | 22 | 18 | 17 |
| Feels °C (?) | 12 | 12 | 13 | 15 | 14 | 14 | 12 | 12 | 11 | 13 | 15 | 18 | 17 | 19 | 13 | 13 | 11 | 13 | 18 | 19 | 20 | 19 | 16 | 14 |
- 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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