Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 2 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
27.0° C
0.1° 

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 8 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 12AM (local time) - 3ft (0.9m), 11s period, SSW swell with cross-offshore 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, 12AM (local time) - 3ft (0.9m), 11s 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 Sunday (Aug 09) at 12AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.3m and 12s. 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 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 0.5m 3s period and expected on Friday (Aug 14) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 9th Aug)3ft (0.9m) 11s
Best Surf12AM (Sun 9th Aug)3ft (0.9m) 11s
Most Powerful 9PM (Sat 8th Aug)3.5ft (1.0m) 11s

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


The Lowdown

Alright, grab your wettie and let’s have a proper look at the forecast for the next couple of weeks.

Honestly, mate, it’s a tough stretch ahead. The surf is going to be small and the winds are going to be messy for most of it. We’re looking at a long, flat spell up front that stretches for over a week. The first real glimmer of hope doesn’t show up until the morning of Saturday the 16th, and even then it’s pretty marginal. We’ll get a few small pulses of energy, but nothing that’s going to have you calling in sick to work.

The focus is all on Hanamizu River, a beach/sandbar setup that’s fairly consistent but is going to be starved for swell. The water temp is sitting right on average for this time of year, so no surprises there.

The early going through the 8th and up to the 15th is a write-off. We’ve got waves barely pushing 2ft to 3ft with cross-onshore winds. The energy is weak, with values mostly under 200, and the periods are short, under 11 seconds. It’s choppy, messy, and just not worth the paddle out. The few days with a cross-offshore wind are still plagued by tiny swell and strong winds, so it’s not going to be clean.

The first thing that even resembles a surf comes on the morning of Saturday the 16th. The swell jumps slightly to 2ft from the ESE with a period of 13 seconds and a light cross-offshore breeze. The energy is moderate at 143. It’s surfable, but ordinary. The afternoon is a bit better with a clean, gentle breeze, but the swell stays small. This is a soft, mushy option for a log, not a performance wave.

From the 17th through to the 23rd, we’re back to small and mostly poor. The swell stays under 3ft, with periods all over the place. We get a few glassy moments, like the morning of the 17th and the 20th, but the swell is just too weak and short-period to offer anything decent. The energy levels are mostly weak, dipping below 100. There’s a slight bump in size on the afternoon of the 19th, hitting 4ft, but it’s from the SSW with a short 6-second period and a cross-onshore wind, so it’ll be a junky, bumpy mess.

Stick to the skatepark for now. The best bet is that small, clean window on the 16th if you’re desperate for a splash. But don’t get your hopes up.

Rusty

Short Range Forecast

Light rain (total 8mm), mostly falling on Mon night. Warm (max 28°C on Sat afternoon, min 22°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Wed morning. Warm (max 29°C on Thu morning, min 24°C on Wed night). Winds increasing (calm on Tue night, 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
Rating
(10 max)
0
1
0
0
1
0
0
0
0
0
0
0
0
1
0
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)
1
S
11
0.9
SSW
11
0.7
SSW
10
0.7
SSW
10
0.6
S
10
0.5
S
11
0.6
SSW
11
0.5
SSW
10
0.5
SSW
10
0.9
SSW
11
0.5
SSW
10
0.5
SSW
10
0.5
SSW
10
0.5
SSW
10
0.5
SSW
10
0.4
SSW
10
0.4
SSW
10
0.4
SSW
9
0.4
SSE
11
0.4
SSE
10
Wave Graph
Metric surfscale
Energy kJ
242
191
112
115
77
62
93
58
62
161
58
60
62
63
58
39
37
28
37
41
Wind (km/h)
20
S
5
WSW
5
E
5
S
5
SE
10
E
5
SSW
15
ENE
10
S
20
SSW
10
SW
10
NE
15
NE
15
N
20
NNE
20
NE
20
N
30
NNE
30
NNE
30
NNE
Wind State
cross-on
cross-off
cross-on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
High Tide
3:24PM1.19m
11:07PM1.33m
4:05PM1.31m
00:49AM1.35m
4:36PM1.39m
2:12AM1.41m
5:04PM1.45m
3:16AM1.49m
5:31PM1.47m
4:10AM1.55m
5:55PM1.48m
4:59AM1.57m
6:17PM1.48m
Low Tide
5:48PM1.18m
7:47AM0.25m
8:17PM1.17m
8:52AM0.13m
9:22PM1.10m
9:44AM0.04m
10:06PM0.99m
10:28AM0.00m
10:44PM0.87m
11:08AM0.03m
11:20PM0.74m
11:43AM0.11m
11:56PM0.62m
clear
part cloud
part cloud
cloud
part cloud
part cloud
thunderstorm
light rain
rain showers
cloud
cloud
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
part cloud
mod rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:58
4:58
5:00
5:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:39
6:38
6:37
6:37
6:36
6:35
6:34
 mm
1
5
2
4
2
2
2
8
17
Temp °C
28
26
28
28
27
27
27
25
25
26
25
26
26
25
29
29
26
28
26
24
Feels °C
30
30
31
31
29
29
30
27
26
27
27
28
26
26
29
30
26
27
25
24
  • 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