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Surf Forecasts:
Nagahama surfForecast / Kanagawa / Japan
16 Day Weather and Surf, issued 2 pm Saturday 21 Mar 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
15.4° C
(Which is 1.6°C colder than average for this time of year)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 Monday (Mar 23) at 3PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.1m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Nagahama in the next 16 days are 1.0m 9s and forecast to arrive on Friday (Mar 27) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Wednesday (Mar 25) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 23rd Mar) | 2.5ft (0.8m) 7s |
| Best Surf | 3PM (Mon 23rd Mar) | 2.5ft (0.8m) 7s |
| Most Powerful | 3PM (Fri 27th Mar) | 3.5ft (1.0m) 9s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 7mm), mostly falling on Mon afternoon. Very mild (max 14°C on Sun afternoon, min 9°C on Sat night). Winds increasing (calm on Mon morning, strong winds from the N by Mon night). | Days 3-6 Weather Summary Heavy rain (total 29mm), heaviest during Thu afternoon. Very mild (max 14°C on Tue afternoon, min 9°C on Wed night). Winds increasing (light winds from the S on Tue afternoon, strong winds from the N by Thu night). | ||||||||||||||||||||||
Sat 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 17 | 4 | 16 | 15 | 4 | 6 | 7 | 8 | 9 | 8 | 8 | 8 | 8 | 6 | 7 | 7 | 7 | 9 | 9 | 9 | 8 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 11 | 11 | 10 | 9 | 8 | 18 | 62 | 147 | 94 | 61 | 17 | 6 | 11 | 22 | 45 | 66 | 51 | 141 | 165 | 115 | 71 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- off | on | on | on | off | off | cross- off | cross- on | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross | cross | ||
High Tide / height (m) | 6:33PM 1.40 | 6:11AM 1.41 | 7:14PM 1.31 | 6:32AM 1.39 | 8:00PM 1.19 | 6:54AM 1.35 | 9:00PM 1.07 | 7:17AM 1.29 | 10:55PM 0.99 | 7:41AM 1.21 | 8:07AM 1.10 | 3:03AM 11:50AM 1.14 1.03 | |||||||||||
Low Tide / height (m) | 12:21AM 0.47 | 12:44PM 0.11 | 12:45AM 0.60 | 1:21PM 0.13 | 1:08AM 0.73 | 2:04PM 0.19 | 1:28AM 0.85 | 2:59PM 0.27 | 1:34AM 0.96 | 4:23PM 0.35 | 6:20PM 0.37 | 8:26AM 0.98 | |||||||||||
Sat 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||
| Sunrise | - | - | 5:43 | - | - | 5:41 | - | - | 5:41 | - | - | 5:39 | - | - | 5:37 | - | - | 5:35 | - | - | 5:35 | ||
| Sunset | 5:52 | - | - | 5:53 | - | - | 5:53 | - | - | 5:54 | - | - | 5:55 | - | - | 5:57 | - | - | 5:58 | - | - | ||
 |  |  |  |  |  |  | | | |  | | |  | |  | | | | | | |||
Rain (mm) | - | - | - | - | - | 2 | 5 | - | - | - | 1 | 3 | - | 8 | 3 | 6 | 8 | - | - | - | 1 | ||
| Temp. °C | 12 | 13 | 11 | 14 | 14 | 12 | 12 | 13 | 14 | 14 | 14 | 10 | 11 | 11 | 10 | 10 | 11 | 13 | 14 | 15 | 16 | ||
| Feels °C (?) | 5 | 6 | 8 | 7 | 8 | 9 | 9 | 8 | 11 | 10 | 9 | 6 | 7 | 6 | 3 | 2 | 4 | 8 | 11 | 13 | 13 | ||
- 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)
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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