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:
Simberi Island surfForecast / New Ireland / Papua New Guinea
48hr Weather and Surf, issued 3 pm Monday 15 Dec 2025 +10Forecast update in hr min s Forecast update imminent
Simberi Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Simberi Island sea temperature is
30.0° C
(Which is normal for this time of year)How big are the waves at Simberi Island today?
The current surf forecast for Simberi Island at 11PM is: 0.6m 10s primary swell from a Northeast direction and 0.6m 10s secondary swell from a North direction (forecast issued at 03:00pm December 15). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (+10) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 2.5ft (0.7m) | 10s |
| Evening (15 Dec) | 2ft (0.6m) | 10s |
Table - waves today at Simberi Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 4 AM | 7 AM | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 13 | 13 | 13 | 13 | 13 | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 13 | 13 | 11 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 100 | 94 | 80 | 80 | 79 | 135 | 135 | 135 | 133 | 165 | 119 | 373 | 367 | 293 | 140 | 153 | 331 | 325 | 378 | 384 | 259 | 278 | 285 | 250 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | off | cross- off | off | off | cross | cross | cross- off | cross- off | cross | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross |
High Tide / height (m) | 12:56PM 0.86 | 1:14PM 0.92 | ||||||||||||||||||||||
Low Tide / height (m) | 9:28PM 0.23 | 9:26PM 0.16 | 9:37PM 0.10 | |||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:39 | - |
| Sunset | - | 5:53 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - |
 |  |  |  | | | | |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | 2 | 3 | - | - | 1 | 3 | 1 | - | - | - | 3 | 3 | - | - | - | - | 1 | 2 | 1 | 2 | 2 | 2 | - |
| Temp. °C | 29 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 |
| Feels °C (?) | 33 | 30 | 31 | 31 | 31 | 32 | 32 | 31 | 32 | 31 | 32 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 32 | 30 | 31 |
- 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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