Surf Forecasts:
Nagahama surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 12PM (local time) - 6ft (1.8m), 13s period, SSE swell with offshore winds.
- Most powerful swell: Monday 21 Sep, 12PM (local time) - 6ft (1.9m), 14s period, S swell with 1,431 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 12PM (local time) - 6ft (1.8m), 13s period with SSE swell.
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 Sunday (Sep 20) at 12PM. The primary swell is predicted to be 1.8m and 13s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Nagahama in the next 16 days are 1.9m 14s and forecast to arrive on Monday (Sep 21) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 10s period and expected on Sunday (Sep 20) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 20th Sep) | 6ft (1.8m) 13s |
| Best Surf | 12PM (Sun 20th Sep) | 6ft (1.8m) 13s |
| Most Powerful | 12PM (Mon 21st Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Short Range ForecastHeavy rain (total 66mm), heaviest during Wed night. Warm (max 27°C on Mon afternoon, min 19°C on Wed night). Winds increasing (calm on Tue night, strong winds from the N by Wed night). | Days 5-7 Weather SummaryHeavy rain (total 51mm), heaviest during Sat afternoon. Warm (max 22°C on Fri afternoon, min 18°C on Thu night). Mainly strong winds. | |||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 4 | SE 9 | SE 8 | SE 7 | SE 7 | SSE 7 | SE 8 | SE 8 | SSE 8 | SSE 8 | SE 8 | SE 16 | SE 16 | SE 14 | SE 14 | SE 13 | SSE 12 | SSE 13 | SSE 13 | S 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 28 | 27 | 24 | 15 | 23 | 9 | 17 | 17 | 7 | 7 | 9 | 10 | 306 | 676 | 722 | 535 | 680 | 1042 | 745 | 865 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | cross-off | off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 6:04PM1.59m | 6:43AM1.56m | 6:24PM1.58m | 7:24AM1.46m | 6:46PM1.56m | 8:12AM1.34m | 7:08PM1.52m | 9:18AM1.22m | 7:30PM1.46m | 11:48AM1.15m | 7:54PM1.37m | 4:15PM1.26m | 8:27PM1.27m | |||||||
Low Tide | 00:22AM0.33m | 12:32PM0.64m | 00:57AM0.32m | 12:56PM0.78m | 1:35AM0.34m | 1:18PM0.91m | 2:20AM0.40m | 1:36PM1.03m | 3:20AM0.48m | 1:22PM1.15m | 4:55AM0.54m | 5:23PM1.26m | ||||||||
 |  |  |  |  | |  |  | |  |  | | |  |  | | | | | | |
 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — |
 | 5:51 | — | — | 5:50 | — | — | 5:47 | — | — | 5:46 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — |
mm | — | 4 | 3 | 4 | 10 | 3 | 9 | 32 | 1 | — | — | — | — | — | 13 | 24 | 14 | — | — | — |
Temp °C | 27 | 26 | 24 | 24 | 24 | 21 | 21 | 21 | 19 | 20 | 20 | 21 | 22 | 21 | 21 | 20 | 21 | 22 | 23 | 22 |
Feels °C | 26 | 25 | 24 | 25 | 28 | 19 | 19 | 18 | 14 | 15 | 14 | 15 | 17 | 16 | 16 | 15 | 19 | 21 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 8 | SE 7 | SE 7 | SSW 6 | SE 8 | SE 8 | SSE 8 | SSE 8 | SE 9 | SE 8 | SE 16 | SE 14 | SE 14 | SE 13 | SSE 12 | SSE 13 | SSE 13 | S 13 |
| kJ | 15 | 22 | 24 | 14 | 23 | 7 | 17 | 17 | 7 | 7 | 3 | 3 | 306 | 676 | 722 | 535 | 680 | 1042 | 745 | 865 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 14 | S 7 | E 14 | SSW 6 | SSE 7 | SSW 6 | S 5 | SE 7 | — | SE 8 | SE 16 | ESE 9 | E 8 | — | SSE 15 | S 9 | — | S 15 | SE 10 |
| kJ | 11 | 33 | 1 | 4 | 11 | 9 | 3 | 2 | 2 | — | 9 | 10 | 15 | 12 | — | 266 | 2 | — | 275 | 207 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | S 7 | E 14 | E 13 | SE 7 | SSW 6 | E 12 | S 5 | E 7 | SE 9 | S 13 | — | — | — | — | — | — | — | — |
| kJ | 4 | 34 | 1 | 16 | 13 | 9 | 6 | 3 | 1 | 1 | 3 | 3 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 4 | SSW 4 | SSW 4 | S 4 | — | NE 3 | NE 3 | NNE 3 | NNE 3 | NE 3 | NE 4 | NNE 4 | NNE 4 | N 4 | NNE 4 | N 3 | NNE 3 | — | NNE 3 | NNE 3 |
| kJ | 28 | 27 | 5 | 15 | — | 2 | 1 | 8 | 6 | 7 | 14 | 16 | 16 | 13 | 11 | 6 | 3 | — | 8 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 142 | 73 | 42 | 72 | 42 | 27 | 39 | 229 | 144 | 553 | 471 | 229 | 144 | 229 | 144 | 65 | 20 | 12 | 0 | 0 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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