Surf Forecasts:
Nagahama surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 6AM (local time) - 1.5ft (0.5m), 19s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 6ft (1.8m), 15s period, SSE swell with 1,422 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 1.5ft (0.5m), 13s period with SE 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 Monday (Aug 24) at 12AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.4m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nagahama in the next 16 days are 1.8m 15s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 13s period and expected on Tuesday (Aug 25) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 24th Aug) | 1.5ft (0.5m) 13s |
| Best Surf | 6AM (Mon 24th Aug) | 1.5ft (0.5m) 19s |
| Most Powerful | 9PM (Mon 24th Aug) | 6ft (1.8m) 15s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun night. Warm (max 27°C on Sat morning, min 24°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 28°C on Thu afternoon, min 26°C on Tue morning). Winds increasing (light winds from the SSW on Tue morning, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
AM | 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 9 | SSW 9 | SSW 9 | SSW 9 | SE 13 | SE 13 | S 20 | SSE 17 | SSE 14 | S 13 | S 14 | S 13 | SSW 12 | SSW 12 | SSW 11 | SSW 10 | SSW 5 | SSW 8 | S 7 | SSE 8 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 32 | 32 | 31 | 15 | 27 | 82 | 199 | 1267 | 850 | 1032 | 1196 | 784 | 461 | 598 | 143 | 58 | 56 | 23 | 22 | 19 | 55 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | off | cross-off | glassy | glassy | cross-on | on | on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross | off |
High Tide | 10:01PM1.32m | 4:01PM1.31m | 00:24AM1.29m | 4:15PM1.40m | 2:01AM1.36m | 4:35PM1.47m | 3:03AM1.45m | 4:55PM1.51m | 3:51AM1.55m | 5:15PM1.54m | 4:33AM1.61m | 5:36PM1.56m | |||||||||
Low Tide | 7:23AM0.48m | 8:27PM1.21m | 8:33AM0.38m | 9:20PM1.11m | 9:22AM0.29m | 9:52PM0.99m | 10:02AM0.23m | 10:22PM0.87m | 10:37AM0.20m | 10:50PM0.74m | 11:09AM0.22m | 11:19PM0.63m | |||||||||
 |  |  |  |  | |  | |  | | | | | |  | | | | |  |  | |
 | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — |
 | — | 6:22 | — | — | 6:21 | — | — | 6:20 | — | — | 6:19 | — | — | 6:16 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | 2 | 1 | 1 | 7 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 | 1 |
Temp °C | 27 | 27 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 26 | 24 |
Feels °C | 30 | 30 | 31 | 27 | 29 | 31 | 29 | 28 | 27 | 29 | 26 | 27 | 27 | 26 | 27 | 28 | 28 | 27 | 29 | 29 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SE 13 | SSE 12 | SSE 17 | SSE 14 | S 13 | S 14 | S 13 | SSW 12 | SSE 9 | SSW 11 | SSW 10 | SSE 9 | S 5 | S 7 | SSE 8 | S 9 |
| kJ | 32 | 32 | 31 | 15 | 14 | 82 | 199 | 1267 | 850 | 1032 | 1196 | 784 | 461 | 33 | 143 | 58 | 16 | 21 | 22 | 19 | 55 |
Swell 2 Height (m) Direction Period (s) | S 4 | SE 10 | S 5 | S 4 | SE 13 | SSW 8 | SSE 17 | SW 10 | S 16 | E 14 | ESE 13 | E 13 | SE 9 | E 12 | SSE 9 | SSE 9 | — | SSW 8 | SSW 8 | SSW 9 | SSE 9 |
| kJ | 3 | 4 | 4 | 2 | 27 | 23 | 168 | 24 | 438 | 4 | 59 | 3 | 22 | 3 | 33 | 26 | — | 23 | 13 | 15 | 9 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 11 | SE 10 | SE 10 | SE 10 | SSE 16 | S 20 | SSW 8 | E 15 | ESE 14 | SW 10 | ESE 13 | E 12 | E 18 | — | E 11 | — | SSE 10 | SSE 10 | SSE 9 | E 12 |
| kJ | 4 | 5 | 4 | 4 | 4 | 27 | 194 | 7 | 17 | 39 | 15 | 56 | 3 | 6 | — | 2 | — | 9 | 9 | 9 | 11 |
Wind waves Height (m) Direction Period (s) | — | S 5 | — | — | SSE 4 | — | — | — | SW 9 | SW 10 | S 4 | SSW 4 | — | SSW 12 | SSW 5 | SSW 4 | SSW 5 | — | NE 2 | — | — |
| kJ | — | 7 | — | — | 2 | — | — | — | 47 | 46 | 18 | 13 | — | 598 | 37 | 26 | 56 | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 73 | 46 | 39 | 8 | 0 | 0 | 72 | 24 | 11 | 87 | 24 | 24 | 87 | 34 | 24 | 74 | 42 | 87 | 8 | 12 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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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