Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 8 am 29 Jul 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
27.4° C
1.0° 

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 29 Jul 2026:

  • Best quality surf: Wednesday 5 Aug, 9AM (local time) - 11ft (3.5m), 18s period, SE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 11ft (3.5m), 17s period, SSE swell with 7,440 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 6PM (local time) - 3.5ft (1.1m), 7s period with SW 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 (Jul 29) at 6PM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.6m and 7s. Another secondary swell of 0.1m and 9s 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 3.5m 17s and forecast to arrive on Wednesday (Aug 05) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Wednesday (Aug 05) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Wed 29th Jul)3.5ft (1.1m) 7s
Best Surf 9AM (Wed 5th Aug)11ft (3.5m) 18s
Most Powerful 3PM (Wed 5th Aug)11ft (3.5m) 17s

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


The Lowdown

Hey folks, Rusty here. Let’s break down Hanamizu River.

Right off the bat, it’s flat. Wednesday the 29th and Thursday the 30th of July bring tiny, weak waves, around 0.2 to 0.4 ft, with cross-onshore breezes stirring things up. Not worth your time.

Friday the 31st morning goes glassy – super clean surface – but the swell is still only about 2 ft from the SSW and super short period (7 seconds). Energy is weak (46). It’s nice to look at, but there’s no power. Water temp is 81°, which is about what you’d expect for late July.

Saturday the 1st and Sunday the 2nd of August are even smaller, with 0.3 to 1 ft at a long 15-second period. That long interval at a beach/sandbar can make waves close out. Not ideal.

Then there’s a long gap. Monday the 3rd sees the first real energy: 3 ft to 4 ft SE swell with a very long 17-second period, but cross winds leave it choppy. Energy climbs (608 to 776) but the quality is marginal.

Here’s the standout. Tuesday the 4th of August morning is the call. Clean with a cross-offshore NNE wind at 12 mph, and an SE swell at 5 ft with a 17-second period. Energy hits 1601 – solid. The wind is clean, the swell has size and direction, and the long period will provide some proper lines. It's a little too much for beginners, but the consistent sets and offshore wind will make for quality waves.

Wednesday the 5th goes huge: 12 ft SE swell, same long period, with clean winds. That’s expert territory only. Energy is pumping over 6800 – very strong. Crowds are possible (“sometimes”), but the size will keep most away.

From Thursday the 6th onward, the swell drops off and the wind goes onshore or messy. Waves under 4 ft with cross-on breezes. A couple of mornings on the 10th and 13th have clean winds, but the swell is only 2 ft to 2 ft – not enough push.

Best bet: Tuesday the 4th of August morning. Clean, solid groundswell with real power. After that, it’s slim pickings for the rest of the window.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 30°C on Wed afternoon, min 26°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Sun night. Warm (max 29°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light.

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
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
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
6
0.6
SSW
7
0.5
SSW
7
0.4
SSW
7
0.5
S
7
0.6
SSW
7
0.6
SSW
7
0.6
S
7
0.4
S
6
0.3
S
6
0.4
S
7
0.2
ESE
16
0.4
SE
15
0.5
SE
15
0.6
SE
16
1
SE
18
1.1
SE
17
1.3
SE
17
1.6
SE
17
2.1
SE
18
2.5
SE
18
Wave Graph
Metric surfscale
Energy kJ
43
40
29
16
27
38
37
32
12
9
14
24
57
112
201
600
772
974
1597
2528
3903
Wind (km/h)
5
E
10
SSW
10
NNW
10
S
15
SSE
5
NNW
5
SE
15
S
5
ESE
5
ESE
15
S
0
S
5
SSE
15
S
20
NE
20
NE
20
NE
20
NNE
20
NNE
25
NE
25
NNE
Wind State
cross-on
cross
cross-off
cross-on
cross-on
cross-off
glassy
cross-on
glassy
on
cross-on
glassy
on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
5:51PM1.39m
4:21AM1.46m
6:13PM1.42m
5:00AM1.48m
6:35PM1.44m
5:38AM1.47m
6:56PM1.46m
6:18AM1.43m
7:18PM1.46m
7:00AM1.37m
7:41PM1.46m
7:48AM1.28m
8:05PM1.45m
Low Tide
10:50AM0.14m
10:59PM0.90m
11:21AM0.13m
11:31PM0.83m
11:50AM0.15m
00:04AM0.75m
12:19PM0.20m
00:38AM0.68m
12:47PM0.29m
1:15AM0.61m
1:15PM0.41m
1:55AM0.55m
1:44PM0.55m
2:41AM0.50m
clear
thunderstorm
thunderstorm
part cloud
clear
part cloud
clear
part cloud
thunderstorm
part cloud
rain showers
rain showers
clear
clear
mod rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:48
4:48
4:50
4:50
4:50
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:49
6:47
6:46
6:45
6:45
6:44
 mm
1
1
1
1
1
6
Temp °C
28
30
29
29
29
28
30
30
27
28
28
27
28
29
26
27
28
27
28
28
26
Feels °C
31
33
32
31
30
32
33
33
32
32
31
32
32
32
30
27
28
27
28
27
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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