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Surf Forecasts:
Nagahama surfForecast / Kanagawa / Japan
16 Day Weather and Surf, issued 2 am Saturday 25 Apr 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
19.4° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Nagahama this week:
The surf forecast for Nagahama over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 29) at 9PM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 1.1m and 7s. Another secondary swell of 0.1m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nagahama in the next 16 days are 1.7m 6s and forecast to arrive on Wednesday (Apr 29) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Apr 30) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 29th Apr) | 4.5ft (1.4m) 7s |
| Best Surf | 9PM (Wed 29th Apr) | 4.5ft (1.4m) 7s |
| Most Powerful | 3PM (Wed 29th Apr) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 28mm), heaviest during Mon morning. Very mild (max 17°C on Sun afternoon, min 13°C on Sat night). Winds increasing (light winds from the W on Sun morning, strong winds from the NNE by Mon morning). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu morning. Warm (max 22°C on Wed afternoon, min 13°C on Thu night). Winds decreasing (strong winds from the SW on Wed morning, light winds from the ENE by Wed night). | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 1 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
S 8 | SSE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SE 7 | SSW 6 | SSW 7 | SSW 4 | SSW 5 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | S 6 | SSE 10 | SE 9 | S 7 | SE 10 | |
19 | 18 | 8 | 8 | 9 | 9 | 15 | 11 | 14 | 9 | 19 | 49 | 148 | 245 | 68 | 15 | 3 | 9 | 0 | 1 | 4 | |
Wind (km/h) | |||||||||||||||||||||
off | cross-off | cross-off | off | cross-on | off | cross-off | cross-off | on | on | cross-on | on | on | on | off | off | off | off | off | off | off | |
High Tide | 1:36AM1.17m | 11:44AM1.02m | 2:08AM1.22m | 1:32PM1.10m | 2:34AM1.27m | 2:36PM1.21m | 2:58AM1.32m | 3:25PM1.31m | 3:22AM1.37m | 4:09PM1.39m | 3:45AM1.41m | 4:49PM1.43m | |||||||||
Low Tide | 5:27PM0.42m | 7:28AM0.90m | 6:54PM0.44m | 8:09AM0.73m | 7:57PM0.44m | 8:42AM0.56m | 8:44PM0.45m | 9:13AM0.39m | 9:23PM0.48m | 9:44AM0.24m | 9:57PM0.52m | 10:16AM0.11m | 10:29PM0.59m | ||||||||
 |  |  |  | |  |  |  | | | |  | | |  |  | | | | | | |
 | 4:58 | — | — | 4:56 | — | — | 4:56 | — | — | 4:54 | — | — | 4:52 | — | — | 4:52 | — | — | 4:50 | — | — |
 | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:25 | — |
— | — | — | — | — | 11 | 14 | 3 | — | — | — | — | — | — | — | 5 | 3 | — | — | — | — | |
Temp °C | 15 | 16 | 14 | 15 | 17 | 16 | 15 | 15 | 16 | 18 | 19 | 19 | 20 | 22 | 19 | 14 | 14 | 14 | 15 | 16 | 14 |
11 | 13 | 10 | 13 | 13 | 14 | 7 | 13 | 13 | 13 | 14 | 15 | 14 | 17 | 16 | 11 | 10 | 9 | 9 | 11 | 10 | |
Swell 1 Height (m) Direction Period (s) | S 8 | SSE 7 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SE 7 | SSW 6 | SSW 7 | E 8 | E 8 | S 13 | E 11 | SSW 7 | SSW 7 | S 6 | SSE 10 | SE 9 | SE 10 | ESE 10 |
 kJ | 19 | 18 | 8 | 8 | 9 | 9 | 15 | 11 | 14 | 9 | 1 | 1 | 3 | 2 | 68 | 15 | 2 | 9 | 22 | 24 | 9 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | S 7 | S 7 | S 7 | E 13 | E 12 | S 7 | SE 6 | SSE 6 | — | — | — | SE 11 | — | SE 8 | SE 8 | E 8 | — | S 7 | SE 10 |
| kJ | 3 | 2 | 1 | 1 | 1 | 3 | 3 | 10 | 10 | 3 | — | — | — | 5 | — | 3 | 3 | 1 | — | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | SW 8 | SW 8 | S 6 | — | — | — | — | — | — | E 7 | S 14 | S 14 | SE 11 | S 13 | — | — | SW 6 | S 5 | — | — | SE 6 |
| kJ | 11 | 2 | 1 | — | — | — | — | — | — | 1 | 4 | 4 | 5 | 3 | — | — | 2 | 1 | — | — | 1 |
Wind waves Height (m) Direction Period (s) | NE 3 | ESE 2 | — | — | — | — | NNE 3 | — | — | — | SSW 4 | SSW 5 | SSW 6 | SSW 6 | — | NE 2 | NE 3 | ENE 3 | NE 3 | ENE 2 | ESE 3 |
| kJ | 2 | 1 | — | — | — | — | 3 | — | — | — | 19 | 49 | 148 | 245 | — | 1 | 4 | 7 | 5 | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 471 | 55 | 27 | 39 | 72 | 27 | 488 | 142 | 43 | 72 | 74 | 574 | 229 | 535 | 0 | 95 | 2986 | 229 | 144 | 27 | 39 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Nagahama 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.
Information about the Nagahama Surf forecast
The above surf forecast table for Nagahama provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nagahama can be found by selecting the local surf guide option on the grey menu. Our Nagahama surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Nagahama) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Nagahama may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Nagahama is 6 km (4 miles) from Miura. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Miura. Miura has rooms for a wide range of budgets as well as car hire and transport links.
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