Surf Forecasts:
Nagahama surf forecast from 12 Aug 2026:
- Best quality surf: Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period, S swell with 70 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 6AM (local time) - 1.5ft (0.5m), 12s period with S 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 Saturday (Aug 15) at 6AM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.4m and 5s. 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 0.5m 12s and forecast to arrive on Saturday (Aug 15) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Saturday (Aug 15) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
| Best Surf | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
| Most Powerful | 6AM (Sat 15th Aug) | 1.5ft (0.5m) 12s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Short Range ForecastHeavy rain (total 50mm), heaviest during Fri night. Warm (max 28°C on Thu afternoon, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sat afternoon, min 23°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | SSW 10 | SSW 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | S 12 | S 11 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 59 | 39 | 50 | 31 | 28 | 16 | 28 | 25 | 63 | 54 | 29 | 29 | 29 | 28 | 28 | 16 | 14 | 14 | 7 | 10 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | glassy | off | off | off | cross-off | cross-off | off | off | off | off | off | off | cross | cross | cross-on | cross-on | on |
High Tide | 5:25PM1.52m | 4:13AM1.57m | 5:47PM1.54m | 4:54AM1.62m | 6:09PM1.55m | 5:34AM1.63m | 6:31PM1.55m | 6:13AM1.61m | 6:52PM1.54m | 6:52AM1.54m | 7:14PM1.53m | 7:35AM1.45m | 7:37PM1.51m | |||||||
Low Tide | 10:45PM0.89m | 11:04AM0.14m | 11:16PM0.78m | 11:36AM0.17m | 11:46PM0.68m | 12:07PM0.24m | 00:17AM0.60m | 12:36PM0.34m | 00:51AM0.54m | 1:04PM0.47m | 1:26AM0.50m | 1:30PM0.62m | 2:07AM0.50m | |||||||
 |  | | | | | | |  |  |  |  | |  | | | | | | | |
 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:01 | — | — |
 | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — |
mm | 6 | 5 | 1 | 4 | 11 | 4 | 2 | 16 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 27 | 28 | 26 | 27 | 28 | 26 | 27 | 29 | 25 | 26 | 28 | 25 | 26 | 26 | 24 | 25 | 26 | 26 |
Feels °C | 29 | 26 | 29 | 32 | 28 | 28 | 31 | 28 | 27 | 30 | 25 | 25 | 27 | 26 | 28 | 28 | 25 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | S 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 11 | S 10 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 59 | 39 | 50 | 31 | 28 | 16 | 28 | 16 | 63 | 54 | 29 | 29 | 29 | 28 | 28 | 16 | 14 | 14 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | SSE 5 | SE 11 | E 10 | SE 9 | SE 5 | SE 5 | SE 5 | SE 8 | SSE 8 | SE 8 | SSE 8 | ESE 10 | SE 10 | ESE 10 | SE 11 | SE 10 | SE 10 | SE 10 | SSE 10 |
| kJ | 10 | 7 | 5 | 2 | 12 | 4 | 4 | 3 | 23 | 27 | 20 | 6 | 20 | 26 | 10 | 5 | 4 | 4 | 4 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 12 | — | SE 12 | S 12 | S 12 | SE 11 | S 12 | SSE 9 | ESE 10 | ESE 10 | ESE 10 | SSE 11 | SSE 11 | SSE 11 | ESE 10 | SE 7 | S 7 | E 9 | E 8 |
| kJ | 4 | 5 | — | 5 | 11 | 11 | 5 | 25 | 16 | 9 | 10 | 11 | 12 | 12 | 12 | 10 | 2 | 1 | 13 | 5 |
Wind waves Height (m) Direction Period (s) | SE 5 | — | NNE 2 | — | — | NNE 2 | — | SE 5 | — | — | — | NE 2 | — | — | — | — | SSE 3 | SE 5 | S 3 | SSW 3 |
| kJ | 32 | — | 1 | — | — | 1 | — | 16 | — | — | — | 1 | — | — | — | — | 1 | 1 | 2 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 12 | 12 | 8 | 12 | 27 | 8 | 12 | 471 | 0 | 12 | 27 | 12 | 12 | 27 | 27 | 27 | 39 | 72 | 72 |
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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