Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 8 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
27.7° C
1.1° 

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 2 Aug 2026:

  • Best quality surf: Friday 7 Aug, 6AM (local time) - 8ft (2.5m), 16s period, S swell with cross-offshore winds.
  • Most powerful swell: Thursday 6 Aug, 3PM (local time) - 10ft (3.0m), 16s period, S swell with 4,320 kJ wave energy.
  • Next surfable swell (1★+): Friday 7 Aug, 6AM (local time) - 8ft (2.5m), 16s period with S 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 Friday (Aug 07) at 6AM. The primary swell is predicted to be 2.5m and 16s period. 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 3.0m 16s and forecast to arrive on Thursday (Aug 06) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Aug 05) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Fri 7th Aug)8ft (2.5m) 16s
Best Surf 6AM (Fri 7th Aug)8ft (2.5m) 16s
Most Powerful 3PM (Thu 6th Aug)10ft (3.0m) 16s

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


The Lowdown

Alright, Rusty here. Let's break down what's on the cards for the next couple of weeks.

We've got a slow start, but a real pulse of swell builds in the middle of the first week. The water's running about 82°, which is a tad warmer than normal for this time of year, so shorts and a spring suit should be fine.

Sunday (August 2nd) and Monday (August 3rd) are a total bust. The swell is tiny and weak, with poor conditions. You're better off waiting.

Tuesday (August 4th) is where the tide starts to turn. The swell kicks up, and the winds go clean and cross-off from the NNE. The wave energy climbs into the moderate range, but the surf quality is still just marginal. The swell is out of the SE, which works here.

The standout window is Wednesday (August 5th) through Thursday (August 6th). Wednesday morning sees 8ft swell from the SSE with clean, offshore winds, and it holds at 10ft through Thursday morning (combined energy of 4010). This is a serious, heavy swell. It's too big for beginners and only for the experienced crew. On Thursday afternoon, the wind turns onshore, putting a bit of a chop on it.

The absolute best of the run is Saturday (August 8th) afternoon. The swell drops back to a solid 6ft from the SSW, and the wind goes glassy. That's a magic ticket. The call is for excellent surf conditions for experienced surfers. The crowds are listed as "sometimes," so you might have a few others with the same idea, but it'll be worth it.

After that peak, the swell fades fast through the second week. The second week is a downer, with small, weak swell and strong, clean winds that do nothing for the waves. From August 9th onward, the wave energy is well under 1000, and by the 13th, it's barely a ripple. It's a classic case of a lot of wind and not enough wave to make it worth paddling out.

So, to call it: The best bet is the Thursday (August 6th) morning for the big, clean swell if you're an expert, or the Saturday (August 8th) afternoon for the glassy, quality session at a more manageable size.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 31°C on Sun morning, min 22°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Thu night. Warm (max 30°C on Fri morning, min 25°C on Wed morning). Wind will be generally light.

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
AM
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
0
0
1
0
1
1
2
2
2
4
4
2
3
2
3
4
2
4
2
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
ESE
16
0.5
SE
15
0.6
ESE
15
0.7
SE
16
0.9
SE
16
1.1
SE
17
1.4
SE
16
1.6
SE
16
2.3
SE
16
2.5
SSE
16
3
SSE
16
3
SSE
16
3
S
16
3
S
16
3
S
16
2.5
S
15
2.3
S
15
2.1
S
15
2
SSW
15
1.9
SSW
15
1.6
SSW
15
Wave Graph
Metric surfscale
Energy kJ
99
104
148
258
448
648
1055
1415
2709
3499
3908
4058
4010
4320
3891
2925
2374
1963
1613
1623
1200
Wind (km/h)
5
ENE
15
S
20
NE
25
NNE
25
NNE
25
NNE
25
NNE
25
ENE
25
NNE
25
NNE
20
NE
20
NNE
25
NNE
15
ENE
15
NE
15
NE
10
SE
15
NNE
20
NE
5
SE
15
NE
Wind State
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross-on
cross
cross
on
cross-off
cross
glassy
cross
High Tide
7:18PM1.46m
7:00AM1.37m
7:41PM1.46m
7:48AM1.28m
8:05PM1.45m
8:47AM1.18m
8:33PM1.43m
10:12AM1.09m
9:05PM1.40m
12:46PM1.07m
9:50PM1.36m
3:24PM1.19m
11:07PM1.33m
Low Tide
12:47PM0.29m
1:15AM0.61m
1:15PM0.41m
1:55AM0.55m
1:44PM0.55m
2:41AM0.50m
2:14PM0.72m
3:38AM0.47m
2:45PM0.88m
4:53AM0.43m
3:24PM1.05m
6:23AM0.36m
5:48PM1.18m
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
cloud
clear
part cloud
part cloud
thunderstorm
rain showers
rain showers
clear
clear
rain showers
thunderstorm
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:52
4:52
4:54
4:54
4:54
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:45
6:44
6:43
6:42
6:40
6:39
 mm
2
9
1
3
3
3
Temp °C
31
31
26
26
27
25
28
28
24
26
28
26
29
29
27
30
29
27
28
28
26
Feels °C
35
34
27
25
26
23
26
26
22
24
27
26
30
31
30
32
31
30
29
32
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