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Surf Forecasts:
Nagahama surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Wednesday 20 May 2026 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
20.0° C
(Which is slightly cooler than normal)How big are the waves at Nagahama today?
The current surf forecast for Nagahama at 8AM is: 0.4m 10s primary swell from a Southeast direction and 0.4m 5s secondary swell from a South-southeast direction, 0.5m 4s secondary swell from a South direction (forecast issued at 02:00am May 20). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 1.5ft (0.4m) | 10s |
| Afternoon (20 May) | 3ft (0.9m) | 4s |
| Evening (20 May) | 2.5ft (0.8m) | 4s |
Table - waves today at Nagahama. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Thu night. Warm (max 22°C on Wed morning, min 13°C on Fri afternoon). Winds increasing (light winds from the W on Thu afternoon, strong winds from the N by Fri morning). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | S 4 | S 4 | SSW 4 | SE 10 | SE 9 | SE 9 | S 6 | S 7 | SSW 7 | SSW 7 | S 7 | S 7 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | |
29 | 29 | 40 | 28 | 16 | 30 | 33 | 25 | 14 | 14 | 14 | 42 | 196 | 295 | 405 | 181 | 112 | 90 | 70 | 52 | 39 | 26 | 16 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | cross-on | cross-on | on | on | on | on | on | cross-on | on | on | cross-on | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | |
High Tide | 5:32AM1.46m | 8:03PM1.30m | 6:06AM1.40m | 8:56PM1.25m | 6:46AM1.31m | |||||||||||||||||||
Low Tide | 00:11AM0.91m | 12:50PM0.02m | 00:49AM0.96m | 1:32PM0.11m | 1:38AM0.98m | 2:20PM0.23m | ||||||||||||||||||
 |  |  |  | | | |  |  | |  |  |  | | |  |  | | | | | | | | |
 | — | 4:33 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 | — |
— | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — | 1 | 8 | 2 | 1 | 1 | 3 | 1 | 1 | — | — | |
Temp °C | 20 | 20 | 20 | 20 | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 20 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 14 | 14 |
17 | 18 | 19 | 19 | 20 | 19 | 19 | 20 | 21 | 22 | 20 | 20 | 18 | 19 | 21 | 13 | 10 | 9 | 7 | 5 | 5 | 4 | 5 | 6 | |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | ESE 10 | SSW 7 | S 7 | S 7 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 |
 kJ | 29 | 29 | 40 | 28 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 13 | 46 | 38 | 245 | 181 | 112 | 90 | 70 | 52 | 39 | 26 | 16 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSE 5 | — | — | — | — | S 6 | S 6 | S 6 | — | — | — | — | ESE 10 | SE 10 | SE 9 | SE 9 | SE 9 | E 11 | E 11 | E 11 | E 11 |
| kJ | — | — | — | 10 | — | — | — | — | 1 | 1 | 1 | — | — | — | — | 38 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 11 | E 11 | E 11 | E 9 | E 9 | E 9 | E 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 3 | 2 | 2 | 2 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | SSW 4 | S 4 | S 4 | S 4 | S 4 | SSW 4 | SSW 4 | S 4 | S 4 | S 6 | S 7 | SSW 7 | SSW 7 | — | NNE 3 | NNE 3 | NNE 3 | NNE 3 | NNE 4 | NNE 4 | NNE 4 | NNE 4 |
| kJ | 16 | 10 | 9 | 9 | 12 | 30 | 33 | 25 | 14 | 9 | 9 | 42 | 196 | 295 | 405 | — | 3 | 5 | 10 | 9 | 16 | 24 | 24 | 24 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 42 | 42 | 42 | 237 | 237 | 237 | 87 | 42 | 42 | 85 | 87 | 122 | 122 | 24 | 11 | 46 | 87 | 142 | 471 | 471 | 506 | 488 | 489 | 553 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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