Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 2 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
27.7° C
0.7° 

Hanamizu River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Hanamizu River surf forecast from 11 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period, SSW swell with 106 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 2.5ft (0.7m), 10s period with SSW swell.

Best Forecast Surf Conditions for Hanamizu River this week:

The surf forecast for Hanamizu River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 9AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.1m and 13s. Another secondary swell of 0.2m and 2s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Hanamizu River in the next 16 days are 0.7m 10s and forecast to arrive on Wednesday (Aug 12) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Sunday (Aug 16) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Wed 12th Aug)2.5ft (0.7m) 10s
Best Surf 9AM (Wed 12th Aug)2.5ft (0.7m) 10s
Most Powerful 9AM (Wed 12th Aug)2.5ft (0.7m) 10s

Table - best surf conditions forecast for Hanamizu River over the next 16 days.


The Lowdown

Alright, let’s size this up. The whole 16-day window for Hanamizu River is a dry spell. Not a single session gets a thumbs-up. That’s a long stretch with nothing, and it’s the kind of quiet period that’s normal for this spot when the swell direction and wind don’t play ball.

The first week is all small stuff. Swell is 1.0 to 2 feet, period 8 to 11 seconds, with cross-off, cross, or cross-on winds. The combined energy is weak, running from 21 to 130 (moderate at best), but every wave comment is “poor surf conditions” or “surfable waves but very ordinary conditions.” Nothing to get excited about.

The second week shows a little more pulse. On August 25th, the swell hits 2 feet from the SSE, period 11 seconds, with combined energy of 127 (moderate). Still, the wind is cross or cross-on, and the comment is “poor surf conditions.” On August 26th, the swell builds to 5 feet from the SSE, period 11 seconds, and the combined energy jumps to 559 (strong). That’s the biggest swell of the window, but it’s got a moderate cross-onshore breeze at 15 mph, and the comment is “poor surf conditions.” At that size, with that wind, this beach-and-sandbar break would be a washing machine. It’s more setup for kite surfing than paddle surfing.

The only clean moments are the glassy mornings. On August 16th, glassy with 1 feet from the ESE, period 11 seconds, combined energy 83 (weak). On August 20th, glassy again with 2 feet from the SSE, period 8 seconds, combined energy 65 (weak). On August 24th, glassy with 1.0 feet from the SSW, period 8 seconds, combined energy 18 (weak). These are the cleanest conditions, but the swell is too small to surf. The morning of August 20th is the best of the bunch, but it’s a session for a longboard or a soft-top, nothing with any push.

The water temperature at the start is 82°F, with an anomaly of 1°F. That’s about average for the time of year.

It’s a rough run. The break is fairly consistent, but the swell and wind just aren’t lining up. Forecasts can change, but right now, there’s nothing to recommend.

Rusty.

Short Range Forecast

Heavy rain (total 37mm), heaviest during Tue night. Warm (max 29°C on Fri morning, min 23°C on Tue night). Mainly fresh winds.

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Fri afternoon. Warm (max 28°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light.

Tue
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
1
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SSW
11
1.3
SSW
6
0.7
SSW
10
0.5
SSW
10
0.4
SSW
10
0.4
SSW
10
0.5
S
10
0.4
SSW
9
0.4
SSW
9
0.3
SSE
10
0.4
SE
9
0.3
S
11
0.4
SSW
10
0.4
SE
11
0.4
ESE
11
0.4
SSW
11
0.4
SSW
9
0.4
SSW
10
0.4
SSW
9
0.3
SSW
9
Wave Graph
Metric surfscale
Energy kJ
64
93
106
59
39
38
47
28
28
21
27
22
35
32
50
37
29
30
28
15
Wind (km/h)
15
WSW
20
S
15
NNE
10
NNE
15
N
20
NNE
10
E
15
N
20
NNE
15
E
15
N
25
NE
15
ENE
15
N
0
ENE
10
SE
5
WSW
5
SE
15
SSE
10
WSW
Wind State
cross-off
cross-on
cross-off
cross-off
cross-off
cross-off
cross-on
cross-off
cross-off
cross-on
cross-off
cross
cross
cross-off
glassy
on
cross-off
on
cross-on
cross-off
High Tide
5:04PM1.45m
3:16AM1.49m
5:31PM1.47m
4:10AM1.55m
5:55PM1.48m
4:59AM1.57m
6:17PM1.48m
5:45AM1.54m
6:38PM1.48m
6:30AM1.47m
6:58PM1.47m
7:14AM1.36m
7:18PM1.46m
Low Tide
10:06PM0.99m
10:28AM0.00m
10:44PM0.87m
11:08AM0.03m
11:20PM0.74m
11:43AM0.11m
11:56PM0.62m
12:15PM0.24m
00:33AM0.52m
12:43PM0.39m
1:10AM0.46m
1:08PM0.55m
1:49AM0.43m
cloud
heavy rain
light rain
rain showers
rain showers
clear
thunderstorm
thunderstorm
rain showers
mod rain
thunderstorm
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
5:00
5:00
5:01
5:01
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:36
6:35
6:34
6:32
6:30
6:30
 mm
24
4
4
1
1
2
1
9
7
Temp °C
27
25
25
25
24
28
28
26
29
28
26
27
28
25
26
27
27
28
29
27
Feels °C
28
26
27
27
25
29
30
29
31
30
28
27
28
24
28
29
30
30
31
30
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Hanamizu River:

join our community of surf reporters

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 Hanamizu River 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 Hanamizu River Surf forecast

The above surf forecast table for Hanamizu River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hanamizu River can be found by selecting the local surf guide option on the grey menu. Our Hanamizu River 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 (Hanamizu River) 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 Hanamizu River 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.

Hanamizu River is 1 km (1 miles) from Ninomiya. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Ninomiya. Ninomiya has rooms for a wide range of budgets as well as car hire and transport links.

Nearest locationNearest