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:
Kalama surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Thursday 11 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Kalama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kalama sea temperature is
25.7° C
(Which is slightly warmer than usual)How big are the waves at Kalama today?
The current surf forecast for Kalama at 6AM is: 1.5m 13s primary swell from a North-northwest direction and 0.6m 8s secondary swell from a East direction (forecast issued at 01:00am December 11). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 5ft (1.6m) | 13s |
| Afternoon (11 Dec) | 5.5ft (1.7m) | 12s |
| Evening (11 Dec) | 4.5ft (1.4m) | 12s |
Table - waves today at Kalama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 792 | 689 | 668 | 737 | 1012 | 871 | 703 | 545 | 560 | 421 | 414 | 237 | 179 | 327 | 327 | 357 | 351 | 469 | 469 | 400 | 400 | 326 | 320 | 260 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross | cross- off | off | cross- off | cross- off | cross- off | cross- off | off | off |
High Tide / height (m) | 7:40AM 0.70 | 10:27PM 0.46 | 8:16AM 0.64 | 11:45PM 0.56 | 8:52AM 0.58 | |||||||||||||||||||
Low Tide / height (m) | 11:47PM 0.34 | 3:36PM 0.27 | 1:18AM 0.44 | 4:07PM 0.23 | 4:01AM 0.50 | 4:35PM 0.20 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:49 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:50 | - |
 | |  |  | |  |  |  | | | | | | | | | | | | | | | |  | |
Rain (mm) | - | - | 2 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 24 | 24 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 25 | 24 |
| Feels °C (?) | 24 | 24 | 22 | 23 | 22 | 22 | 22 | 23 | 22 | 23 | 23 | 23 | 24 | 23 | 25 | 24 | 24 | 24 | 23 | 23 | 24 | 23 | 25 | 24 |
- 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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