Surf Forecasts:
Nagahama surf forecast from 8 Aug 2026:
- Best quality surf: Sunday 9 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 9PM (local time) - 3.5ft (1.0m), 11s period, S swell with 231 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period with SSW 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 (Aug 09) at 9AM. The primary swell is predicted to be 0.7m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nagahama in the next 16 days are 1.0m 11s and forecast to arrive on Saturday (Aug 08) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 12) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Sun 9th Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 9AM (Sun 9th Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 9PM (Sat 8th Aug) | 3.5ft (1.0m) 11s |
Table - best surf conditions forecast for Nagahama over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue morning. Warm (max 28°C on Mon afternoon, min 22°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Thu night. Warm (max 29°C on Thu afternoon, min 24°C on Wed night). Winds increasing (light winds from the E on Wed morning, fresh winds from the NNE by Fri morning). | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 11 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 11 | SSW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSE 11 | SSE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 242 | 191 | 112 | 115 | 77 | 62 | 93 | 58 | 62 | 161 | 58 | 60 | 62 | 63 | 58 | 39 | 37 | 28 | 37 | 41 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | on | cross-off | off | glassy | off | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off |
High Tide | 3:51PM1.23m | 11:38PM1.32m | 4:15PM1.34m | 1:20AM1.35m | 4:39PM1.42m | 2:33AM1.42m | 5:02PM1.48m | 3:27AM1.50m | 5:25PM1.52m | 4:13AM1.57m | 5:47PM1.54m | 4:54AM1.62m | 6:09PM1.55m | |||||||
Low Tide | 6:45PM1.21m | 8:11AM0.39m | 8:48PM1.17m | 9:07AM0.28m | 9:39PM1.09m | 9:51AM0.20m | 10:14PM0.99m | 10:29AM0.15m | 10:45PM0.89m | 11:04AM0.14m | 11:16PM0.78m | 11:36AM0.17m | 11:46PM0.68m | |||||||
 |  |  |  | | | |  |  | |  |  | | | | | | |  | | |
 | — | — | 4:54 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — |
 | 6:38 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — |
mm | — | — | — | — | — | — | — | 2 | 2 | — | 1 | 7 | 5 | 5 | — | 2 | 11 | — | 8 | 17 |
Temp °C | 27 | 26 | 26 | 27 | 26 | 27 | 28 | 25 | 24 | 26 | 27 | 26 | 26 | 25 | 27 | 29 | 26 | 28 | 25 | 24 |
Feels °C | 28 | 28 | 30 | 28 | 28 | 28 | 30 | 25 | 23 | 24 | 28 | 27 | 26 | 26 | 27 | 29 | 26 | 27 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | S 11 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 11 | SSW 11 | SSW 10 | SSW 10 | SE 12 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SSE 11 | SSE 10 |
| kJ | 242 | 191 | 112 | 115 | 77 | 62 | 93 | 58 | 62 | 6 | 58 | 60 | 62 | 63 | 58 | 39 | 37 | 28 | 37 | 41 |
Swell 2 Height (m) Direction Period (s) | ESE 12 | ESE 12 | ESE 13 | ESE 13 | SW 12 | SW 12 | ESE 12 | E 11 | SE 12 | E 11 | SE 13 | S 4 | SSE 5 | SSE 4 | SE 11 | SE 11 | S 13 | SSE 12 | SSW 9 | SE 6 |
| kJ | 13 | 28 | 34 | 34 | 23 | 21 | 14 | 9 | 6 | 2 | 6 | 3 | 9 | 4 | 5 | 5 | 13 | 13 | 29 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 12 | ESE 15 | SE 12 | SE 12 | ESE 12 | ESE 12 | SE 11 | SE 11 | E 10 | SE 13 | SE 10 | SE 10 | SE 10 | SE 12 | S 9 | — | SE 12 | ESE 6 | E 8 | SSW 9 |
| kJ | 6 | 21 | 5 | 5 | 14 | 14 | 5 | 5 | 2 | 26 | 4 | 4 | 4 | 5 | 2 | — | 5 | 3 | 1 | 17 |
Wind waves Height (m) Direction Period (s) | S 3 | — | — | — | — | — | — | — | — | SSW 11 | S 4 | ENE 3 | ESE 5 | — | NNE 3 | — | — | NE 3 | E 3 | NE 3 |
| kJ | 4 | — | — | — | — | — | — | — | — | 161 | 8 | 2 | 9 | — | 3 | — | — | 4 | 5 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 492 | 24 | 0 | 11 | 0 | 0 | 0 | 27 | 11 | 74 | 24 | 18 | 0 | 4 | 18 | 27 | 12 | 68 | 144 | 144 |
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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