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Kugenuma Rivermouth surfForecast / Kanagawa / Japan
12 Day Weather and Surf, issued 2 pm Saturday 12 Jul 2025 JST
Best Forecast Surf Conditions for Kugenuma Rivermouth this week:
The surf forecast for Kugenuma Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jul 13) at 12AM. The primary swell is predicted to be 0.6m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kugenuma Rivermouth in the next 12 days are 2.3m 12s and forecast to arrive on Wednesday (Jul 16) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Monday (Jul 14) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 13th Jul) | 2ft (0.6m) 8s |
| Best Surf | 3PM (Mon 14th Jul) | 3ft (0.9m) 12s |
| Most Powerful | 12AM (Wed 16th Jul) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Kugenuma Rivermouth over the next 12 days.
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thu 24 | ||||||||||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 12 | 12 | 11 | 11 | 12 | 11 | 11 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 9 | 7 | 7 | 7 | 8 | 11 | 13 | 14 | 13 | 13 | 13 | 13 | 12 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 32 | 70 | 51 | 41 | 63 | 30 | 246 | 512 | 778 | 577 | 1668 | 863 | 1244 | 1127 | 498 | 423 | 332 | 207 | 185 | 73 | 49 | 92 | 72 | 54 | 87 | 1714 | 12444 | 8159 | 3848 | 4873 | 7565 | 2060 | 1603 | 726 | 454 | 334 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | glass | cross- on | cross- off | off | cross- off | on | on | on | cross- on | on | on | on | on | on | on | on | cross- on | on | on | on | on | glass | on | glass | cross | cross | cross- off | cross- off | glass | cross- off | cross | cross | cross | cross- on |
High Tide / height (m) | 7:06PM 1.42 | 5:38AM 1.48 | 7:31PM 1.43 | 6:25AM 1.43 | 7:58PM 1.43 | 7:15AM 1.36 | 8:28PM 1.43 | 8:10AM 1.25 | 9:00PM 1.42 | 9:17AM 1.13 | 9:35PM 1.40 | 10:51AM 1.04 | 10:14PM 1.38 | 2:32PM 1.04 | 11:01PM 1.36 | 4:44PM 1.18 | 11:59PM 1.34 | 5:04PM 1.29 | 1:06AM 1.35 | 5:27PM 1.36 | 2:09AM 1.38 | 5:47PM 1.40 | 3:04AM 1.42 | |||||||||||||
Low Tide / height (m) | 12:14AM 0.93 | 12:37PM 0.13 | 12:54AM 0.85 | 1:10PM 0.24 | 1:39AM 0.78 | 1:43PM 0.37 | 2:32AM 0.72 | 2:17PM 0.53 | 3:35AM 0.66 | 2:50PM 0.70 | 4:51AM 0.60 | 3:21PM 0.88 | 6:17AM 0.51 | 3:22PM 1.04 | 7:33AM 0.41 | 6:50PM 1.17 | 8:35AM 0.29 | 8:46PM 1.20 | 9:24AM 0.20 | 9:47PM 1.18 | 10:05AM 0.13 | 10:26PM 1.14 | 10:41AM 0.09 | |||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thu 24 | ||||||||||||||||||||||||
| Sunrise | - | - | 4:35 | - | - | 4:37 | - | - | 4:37 | - | - | 4:37 | - | - | 4:39 | - | - | 4:39 | - | - | 4:39 | - | - | 4:41 | - | - | 4:41 | - | - | 4:41 | - | - | 4:43 | - | - | 4:43 |
| Sunset | 6:58 | - | - | 6:58 | - | - | 6:58 | - | - | 6:57 | - | - | 6:57 | - | - | 6:55 | - | - | 6:55 | - | - | 6:54 | - | - | 6:54 | - | - | 6:53 | - | - | 6:53 | - | - | 6:52 | - | - |
 |  |  | |  |  |  |  |  | | | | |  | | |  | | | | | | | | | | | |  |  | | | | | | | |
Rain (mm) | - | - | - | - | 2 | 1 | 1 | 7 | 7 | 5 | 18 | 3 | 3 | 4 | - | - | - | - | - | - | - | - | - | 1 | - | 2 | 4 | 1 | 10 | 9 | 3 | 16 | 10 | 7 | 19 | 8 |
| Temp. °C | 27 | 24 | 26 | 27 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 28 | 28 | 27 | 29 | 29 | 25 | 26 | 28 | 26 | 27 | 27 | 27 | 28 |
| Feels °C (?) | 27 | 25 | 28 | 28 | 29 | 25 | 27 | 26 | 28 | 28 | 27 | 29 | 23 | 26 | 27 | 28 | 28 | 28 | 28 | 28 | 30 | 28 | 28 | 30 | 29 | 31 | 30 | 28 | 26 | 30 | 30 | 27 | 29 | 28 | 30 | 29 |
Short Range Forecast: Moderate rain (total 18mm), heaviest on Mon night. Warm (max 28°C on Mon afternoon, min 23°C on Sat night). Winds increasing (calm on Sun morning, fresh winds from the SSW by Mon night). | Days 3-6 Weather Summary Heavy rain (total 33mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 25°C on Wed night). Winds decreasing (strong winds from the S on Wed afternoon, light winds from the SW by Thu night). | Days 6-9 Weather Summary Light rain (total 7mm), mostly falling on Mon morning. Warm (max 29°C on Mon morning, min 25°C on Sat night). Winds decreasing (fresh winds from the S on Fri afternoon, calm by Sat night). | Long Range Forecast: Heavy rain (total 84mm), heaviest during Tue morning. Warm (max 29°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kugenuma Rivermouth 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 Kugenuma Rivermouth Surf forecast
The above surf forecast table for Kugenuma Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kugenuma Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Kugenuma Rivermouth 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 (Kugenuma Rivermouth) 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 Kugenuma Rivermouth 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.
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