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:
Tengan surfForecast / Okinawa / Japan
48hr Weather and Surf, issued 8 am Monday 15 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Tengan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tengan sea temperature is
24.4° C
(Which is slightly warmer than usual)How big are the waves at Tengan today?
The current surf forecast for Tengan at 12PM is: 1.9m 8s primary swell from a North-northwest direction and 0.2m 8s secondary swell from a East-southeast direction, 1.7m 9s secondary swell from a North direction (forecast issued at 08:00am December 15). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 7ft (2.2m) | 9s |
| Afternoon (15 Dec) | 5.5ft (1.7m) | 8s |
| Evening (15 Dec) | 4.5ft (1.4m) | 8s |
Table - waves today at Tengan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 847 | 724 | 534 | 412 | 309 | 264 | 187 | 151 | 123 | 94 | 71 | 52 | 44 | 44 | 29 | 46 | 45 | 28 | 27 | 26 | 26 | 26 | 26 | 26 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | on | on | on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 3:51AM 1.37 | 3:16PM 1.62 | 4:51AM 1.46 | 3:55PM 1.65 | 5:38AM 1.54 | 4:31PM 1.68 | ||||||||||||||||||
Low Tide / height (m) | 9:09AM 0.88 | 10:20PM 0.46 | 10:06AM 0.91 | 11:00PM 0.34 | 10:54AM 0.92 | 11:36PM 0.24 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| Sunrise | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - |
| Sunset | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:38 | - | - | - | - |
 |  | | | | | |  | |  | |  |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 17 | 18 | 19 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 |
| Feels °C (?) | 10 | 11 | 13 | 15 | 14 | 15 | 15 | 17 | 17 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 19 | 18 | 17 | 18 | 18 |
- 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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