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:
Chinamans Hat/Mokolii surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 pm Saturday 13 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Chinamans Hat/Mokolii surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Chinamans Hat/Mokolii sea temperature is
25.6° C
(Which is slightly warmer than usual)How big are the waves at Chinamans Hat/Mokolii today?
The current surf forecast for Chinamans Hat/Mokolii at 11PM is: 0.9m 10s primary swell from a North direction and 0.4m 8s secondary swell from a East direction (forecast issued at 07:00pm December 13). An open ocean swell of 0.5m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 4ft (1.2m) | 11s |
| Evening (13 Dec) | 3.5ft (1.0m) | 10s |
Table - waves today at Chinamans Hat/Mokolii. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 12 | 14 | 14 | 13 | 13 | 13 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 270 | 210 | 164 | 125 | 96 | 68 | 153 | 272 | 331 | 647 | 628 | 495 | 492 | 811 | 1571 | 1509 | 1447 | 1407 | 1227 | 1033 | 888 | 861 | 734 | 667 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | glass | glass | cross- on | glass | glass | glass | off | off | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | off | off | cross- off | off |
High Tide / height (m) | 12:18AM 0.61 | 9:07AM 0.49 | 12:49AM 0.69 | 9:34AM 0.45 | 1:16AM 0.76 | 10:09AM 0.42 | ||||||||||||||||||
Low Tide / height (m) | 4:44PM 0.05 | 5:52AM 0.40 | 5:05PM 0.01 | 7:14AM 0.38 | 5:30PM -0.03 | 8:07AM 0.36 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - |
| Sunset | 5:50 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - |
 |  |  | | |  | |  | | |  | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 24 | 24 | 23 | 23 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 25 | 26 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 27 |
| Feels °C (?) | 25 | 25 | 25 | 26 | 26 | 26 | 28 | 28 | 28 | 28 | 26 | 26 | 25 | 24 | 26 | 27 | 26 | 26 | 27 | 25 | 25 | 26 | 26 | 27 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Chinamans Hat/Mokolii surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest