Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 8 pm 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
27.1°C
0.2° 

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 22 Aug 2026:

  • Best quality surf: Monday 24 Aug, 9PM (local time) - 4.5ft (1.4m), 15s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 25 Aug, 12PM (local time) - 5.5ft (1.7m), 14s period, S swell with 1,047 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 12AM (local time) - 1.5ft (0.5m), 13s period with SE 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 Monday (Aug 24) at 12AM. The primary swell is predicted to be 0.5m and 13s period with a secondary swell of 0.3m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Hanamizu River in the next 16 days are 1.7m 14s and forecast to arrive on Tuesday (Aug 25) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 9s period and expected on Tuesday (Aug 25) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Mon 24th Aug)1.5ft (0.5m) 13s
Best Surf 9PM (Mon 24th Aug)4.5ft (1.4m) 15s
Most Powerful12PM (Tue 25th Aug)5.5ft (1.7m) 14s

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


The Lowdown

Alright, Rusty here with the long-range look at Hanamizu River. I've been staring at the charts and it's a bit of a mixed bag, to be honest. Hold on to your board, 'cause the first week is gonna test your patience. There's a stretch from Sunday the 23rd all the way through to the next weekend where it’s looking pretty grim. Lots of days with no real recommendations, just waiting it out.

The first real flicker of hope comes on Monday the 25th. Tuesday morning the swell starts to show a little life. We're looking at clean conditions Tuesday morning with a 5ft south swell, and the wave energy is building to a proper moderate level (1208). The wind is light cross-onshore which isn't ideal but it's not wrecking it. It's a beach and sandbar setup, so don't expect perfection, but it’s surfable. The water temp feels pretty normal for this time of year.

The standout window is shaping up to be Friday the 28th and the following couple of days. On Friday afternoon, the wind goes glassy, dead calm, with a 3ft south swell. The energy is low, but the conditions will be perfect. That's the one to get out of work for. Saturday the 29th morning is also looking glassy and clean, with a 2ft south swell. That's gonna be your best bet for a proper session – clean, quiet, and easy. For the best quality, head out on Friday afternoon (28th) or Saturday morning (29th). These are small waves, good for a beginner or for getting a longboard out. If you're looking for something bigger, the bigger days around 5ft are more for intermediate to advanced surfers; a 5ft wave can be a handful for a newbie.

After that, the second week has a few little windows. Monday the 1st September has clean morning conditions with a tiny 2ft south swell, then Thursday the 4th and Friday the 5th of September have some stronger cross-offshore winds with waist-high swell, but the confidence is lower that far out. Keep an eye on it.

All in all, it's not an epic run, but there are some glassy, clean windows to scratch the itch. Don't give up on it.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Sat night. Warm (max 29°C on Tue morning, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Fri afternoon. Warm (max 30°C on Wed afternoon, min 24°C on Fri afternoon). Wind will be generally light.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
1
1
0
3
2
0
3
2
0
2
0
0
1
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
9
0.4
SSW
9
0.3
SE
13
0.5
SE
13
0.8
SSE
15
0.9
SSE
17
1.6
SSE
14
1.5
S
14
1.6
S
14
1.6
S
14
1.4
S
13
1.1
SSW
13
0.9
SSW
12
1
S
10
1
S
8
0.8
S
9
0.7
S
8
0.8
S
9
0.9
SSW
11
Wave Graph
Metric surfscale
Energy kJ
31
25
27
82
252
516
994
849
932
946
663
361
199
218
135
93
63
102
187
Wind (km/h)
10
NW
15
NE
5
SSE
5
SSW
5
SSE
20
S
10
WSW
10
S
20
S
10
W
10
S
25
S
15
WSW
15
SSW
20
SSW
5
ESE
15
NE
5
NW
5
SSW
Wind State
off
cross
cross-on
glassy
on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
glassy
cross-off
glassy
cross
High Tide
9:51PM1.23m
4:23PM1.21m
00:27AM1.21m
4:23PM1.27m
1:56AM1.27m
4:35PM1.33m
2:52AM1.35m
4:51PM1.38m
3:36AM1.42m
5:08PM1.43m
4:16AM1.47m
5:27PM1.46m
Low Tide
7:42AM0.47m
8:28PM1.14m
8:39AM0.38m
9:13PM1.05m
9:21AM0.30m
9:43PM0.96m
9:55AM0.23m
10:11PM0.85m
10:25AM0.20m
10:39PM0.74m
10:54AM0.20m
11:08PM0.63m
thunderstorm
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
thunderstorm
part cloud
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:07
5:09
5:09
5:09
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:23
6:22
6:21
6:20
6:19
6:17
6:15
 mm
5
2
1
5
7
Temp °C
27
27
28
26
28
28
26
29
29
27
29
30
27
30
30
27
27
26
24
Feels °C
31
29
31
30
31
30
29
33
31
29
30
31
29
32
32
31
30
30
28
  • 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