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Kugenuma Rivermouth surfForecast / Kanagawa / Japan
12 Day Weather and Surf, issued 8 pm Friday 04 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 Saturday (Jul 05) at 3AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.5m and 3s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Kugenuma Rivermouth in the next 12 days are 0.9m 11s and forecast to arrive on Saturday (Jul 05) at 3AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 5th Jul) | 3ft (0.9m) 11s |
| Best Surf | 3AM (Sat 5th Jul) | 3ft (0.9m) 11s |
| Most Powerful | 3AM (Sat 5th Jul) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Kugenuma Rivermouth over the next 12 days.
Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wed 16 | |||||||||||||||||||||||||
| 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 | PM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  |  | |||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 11 | 10 | 10 | 9 | 9 | 10 | 10 | 12 | 10 | 12 | 12 | 12 | 11 | 11 | 9 | 11 | 5 | 9 | 8 | 8 | 10 | 9 | 9 | 10 | 12 | 12 | 11 | 12 | 12 | 13 | 12 | 11 | 10 | 14 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 171 | 178 | 85 | 65 | 31 | 31 | 35 | 30 | 41 | 25 | 28 | 18 | 17 | 16 | 20 | 33 | 9 | 19 | 27 | 37 | 30 | 46 | 76 | 76 | 105 | 142 | 181 | 151 | 157 | 169 | 243 | 191 | 128 | 87 | 206 | 271 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | glass | cross | glass | cross- off | cross- on | cross | cross- off | on | cross- on | cross- on | on | on | cross- on | on | cross- on | cross- on | on | on | on | on | cross- on | cross | on | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on |
High Tide / height (m) | 11:20PM 1.34 | 3:05PM 1.08 | 12:09AM 1.34 | 4:22PM 1.20 | 1:01AM 1.35 | 5:05PM 1.29 | 1:51AM 1.38 | 5:37PM 1.35 | 2:39AM 1.42 | 6:02PM 1.38 | 3:24AM 1.45 | 6:23PM 1.40 | 4:08AM 1.48 | 6:44PM 1.41 | 4:53AM 1.49 | 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 | |||||||||||||
Low Tide / height (m) | 7:20AM 0.45 | 6:26PM 1.04 | 8:19AM 0.32 | 8:01PM 1.12 | 9:07AM 0.21 | 9:10PM 1.15 | 9:49AM 0.12 | 9:58PM 1.15 | 10:26AM 0.06 | 10:34PM 1.13 | 11:00AM 0.03 | 11:06PM 1.08 | 11:33AM 0.03 | 11:39PM 1.01 | 12:05PM 0.07 | 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 | |||||||||||||
Saturday 05 | Sunday 06 | Monday 07 | Tuesday 08 | Wednesday 09 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wed 16 | |||||||||||||||||||||||||
| Sunrise | - | 4:31 | - | - | 4:31 | - | - | 4:33 | - | - | 4:33 | - | - | 4:33 | - | - | 4:35 | - | - | 4:35 | - | - | 4:35 | - | - | 4:35 | - | - | 4:37 | - | - | 4:37 | - | - | 4:37 | - |
| Sunset | - | - | 7:00 | - | - | 7:00 | - | - | 7:00 | - | - | 7:00 | - | - | 6:59 | - | - | 6:59 | - | - | 6:59 | - | - | 6:58 | - | - | 6:58 | - | - | 6:58 | - | - | 6:57 | - | - | 6:57 |
 |  |  |  | | |  | | | | | | | | | | | | | | | | | |  |  |  | | | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | 3 | 2 | 5 | 24 | 10 | 13 | 28 | 19 | 11 | 22 | 11 | 6 |
| Temp. °C | 26 | 28 | 30 | 28 | 30 | 30 | 28 | 29 | 29 | 27 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 26 | 28 | 28 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 |
| Feels °C (?) | 28 | 32 | 34 | 32 | 34 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 29 | 30 | 29 | 28 | 31 | 30 | 29 | 31 | 30 | 30 | 32 | 31 | 31 | 33 | 31 | 30 | 28 | 30 | 29 | 28 | 29 | 28 | 27 | 27 |
Short Range Forecast: Some drizzle, heaviest during Fri night. Warm (max 30°C on Sat afternoon, min 26°C on Fri night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | Days 6-9 Weather Summary Moderate rain (total 12mm), heaviest on Sun afternoon. Warm (max 29°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | Long Range Forecast: Heavy rain (total 147mm), heaviest during Tue morning. Warm (max 28°C on Mon afternoon, min 26°C on Sun night). Winds increasing (light winds from the SSE on Sun night, strong winds from the S by Wed morning). | |||||||||||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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