Surf Forecasts:
Nagahama surf forecast from 18 Oct 2026:
- Best quality surf: Tuesday 20 Oct, 9PM (local time) - 2.5ft (0.8m), 13s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 22 Oct, 12PM (local time) - 4.5ft (1.3m), 16s period, S swell with 806 kJ wave energy.
- Next surfable swell (1★+): Tuesday 20 Oct, 9PM (local time) - 2.5ft (0.8m), 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 Tuesday (Oct 20) at 9PM. The primary swell is predicted to be 0.8m and 13s period with a secondary swell of 0.6m and 6s. 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 1.3m 16s and forecast to arrive on Thursday (Oct 22) 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 0.9m 8s period and expected on Friday (Oct 23) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 20th Oct) | 2.5ft (0.8m) 13s |
| Best Surf | 9PM (Tue 20th Oct) | 2.5ft (0.8m) 13s |
| Most Powerful | 12PM (Thu 22nd Oct) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 25°C on Tue morning, min 21°C on Sun afternoon). Winds increasing (calm on Tue afternoon, strong winds from the SW by Wed morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 16°C on Thu night). Winds decreasing (strong winds from the SW on Wed night, calm by Sat morning). | |||||||||||||||||||
Sun 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | ||||||||||||||
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) | SE 11 | S 3 | SSW 4 | S 5 | SE 8 | SE 14 | SSE 15 | SSE 13 | S 15 | SSW 6 | SSW 7 | S 15 | S 13 | S 14 | S 13 | SSW 14 | SSW 13 | SSW 13 | SSW 15 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 4 | 5 | 24 | 45 | 25 | 96 | 72 | 189 | 233 | 245 | 293 | 291 | 423 | 713 | 340 | 529 | 176 | 131 | 291 | 206 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | on | on | glassy | on | on | on | off | off | off | off | cross-off | off | off | on | on |
High Tide | 7:29PM1.31m | 1:20PM1.25m | 9:01PM1.19m | 2:00PM1.31m | 00:18AM1.17m | 2:27PM1.37m | 1:52AM1.26m | 2:51PM1.42m | 2:50AM1.38m | 3:14PM1.46m | 3:37AM1.47m | 3:37PM1.50m | ||||||||
Low Tide | 4:16AM0.51m | 6:21PM1.17m | 5:59AM0.55m | 7:51PM1.02m | 7:21AM0.55m | 8:26PM0.85m | 8:17AM0.54m | 8:56PM0.68m | 9:00AM0.54m | 9:26PM0.51m | 9:37AM0.57m | 9:56PM0.36m | ||||||||
 |  |  | |  |  |  | | | | | | | | | | | | | | |
 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | 5:02 | — | — | 5:01 | — | — | 5:00 | — | — | 5:00 | — | — | 4:59 | — | — | 4:57 | — | — | 4:55 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 23 | 24 | 23 | 25 | 25 | 23 | 25 | 25 | 25 | 20 | 18 | 16 | 17 | 18 | 17 | 17 | 19 | 19 |
Feels °C | 19 | 18 | 19 | 20 | 21 | 24 | 25 | 24 | 21 | 20 | 20 | 16 | 12 | 10 | 12 | 13 | 14 | 18 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 10 | SE 8 | SE 10 | S 5 | SE 14 | SE 12 | SSE 13 | S 15 | S 14 | S 13 | S 13 | S 13 | S 14 | S 13 | SSW 14 | SSW 13 | SSW 13 | SSW 15 | SW 14 |
| kJ | 1 | 4 | 2 | 4 | 19 | 96 | 72 | 189 | 233 | 198 | 229 | 212 | 423 | 713 | 340 | 529 | 176 | 131 | 291 | 206 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 7 | SE 10 | S 17 | SE 8 | SSE 16 | SSE 15 | S 5 | SSE 12 | SSE 11 | S 16 | S 15 | SSW 16 | SSW 16 | SSW 16 | ESE 8 | SSW 15 | SW 15 | SE 9 | SE 9 |
| kJ | 4 | 2 | 4 | 6 | 25 | 52 | 71 | 14 | 123 | 46 | 198 | 291 | 273 | 310 | 217 | 94 | 148 | 113 | 27 | 28 |
Swell 3 Height (m) Direction Period (s) | E 8 | S 6 | SE 10 | S 16 | SSE 15 | SSE 16 | — | S 17 | — | S 17 | SSE 10 | SSW 6 | SE 9 | SE 9 | SE 5 | — | SE 8 | SE 8 | — | — |
| kJ | 1 | 1 | 16 | 5 | 21 | 51 | — | 94 | — | 95 | 57 | 26 | 52 | 51 | 4 | — | 24 | 25 | — | — |
Wind waves Height (m) Direction Period (s) | SSE 5 | S 3 | SSW 4 | S 5 | SW 4 | S 5 | S 5 | SSW 5 | SSW 5 | SSW 6 | SSW 7 | NNE 3 | NE 3 | NE 3 | NE 3 | — | — | — | — | — |
| kJ | 2 | 5 | 24 | 45 | 16 | 11 | 27 | 15 | 93 | 245 | 293 | 2 | 3 | 5 | 2 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1068 | 142 | 142 | 492 | 22 | 87 | 18 | 0 | 492 | 492 | 489 | 43 | 135 | 144 | 18 | 1 | 0 | 0 | 11 | 11 |
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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