Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Nagahama surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Thursday 25 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Nagahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nagahama sea temperature is
18.5° C
(Which is normal for this time of year)How big are the waves at Nagahama today?
The current surf forecast for Nagahama at 1PM is: 0.9m 8s primary swell from a South-southeast direction and 0.7m 8s secondary swell from a South direction (forecast issued at 08:00am December 25). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Dec) | 4ft (1.2m) | 8s |
| Afternoon (25 Dec) | 3.5ft (1.1m) | 8s |
| Evening (25 Dec) | 4.5ft (1.3m) | 8s |
Table - waves today at Nagahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 25 | Friday 26 | Saturday 27 | Sun 28 | |||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 10 | 10 | 10 | 10 | 8 | 8 | 8 | 8 | 9 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 234 | 195 | 116 | 161 | 134 | 224 | 265 | 346 | 619 | 352 | 55 | 48 | 65 | 24 | 15 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | glass | glass | cross- off | cross- off | off | on | cross- on | cross | cross- off | cross- off | off | off | off | off | off | off | glass | cross | glass | glass | cross- off | cross- off |
High Tide / height (m) | 8:50AM 1.32 | 7:37PM 1.27 | 9:28AM 1.29 | 8:40PM 1.17 | 10:07AM 1.27 | 10:03PM 1.08 | ||||||||||||||||||
Low Tide / height (m) | 2:17PM 0.83 | 2:31AM 0.32 | 3:16PM 0.78 | 3:15AM 0.47 | 4:26PM 0.71 | |||||||||||||||||||
Thursday 25 | Friday 26 | Saturday 27 | Sun 28 | |||||||||||||||||||||
| Sunrise | - | 6:47 | - | - | - | - | - | - | - | 6:47 | - | - | - | - | - | - | - | 6:48 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:35 | - | - | - | - | - | - | - | 4:36 | - | - | - | - |
 |  |  | |  | | |  | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 15 | 15 | 15 | 14 | 12 | 11 | 12 | 9 | 10 | 10 | 7 | 6 | 5 | 4 | 4 | 4 | 4 | 5 | 6 | 7 | 7 | 7 | 6 |
| Feels °C (?) | 12 | 13 | 15 | 15 | 10 | 6 | 8 | 1 | -3 | 1 | 1 | -4 | -3 | -4 | -3 | -3 | -2 | -2 | 1 | 2 | 4 | 4 | 2 | 1 |
- 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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