Hanamizu River Surf Break

Hanamizu River Surf Forecast and Surf Report

Lat Long: 35.29° N 139.26° E

Issued: 2 am 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
23.5° C

Slightly cooler than normal

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 5 Jul 2026:

  • Best quality surf: Thursday 9 Jul, 3AM (local time) - 5.5ft (1.7m), 16s period, SSE swell with glassy winds.
  • Most powerful swell: Saturday 11 Jul, 3AM (local time) - 7.5ft (2.3m), 18s period, SSW swell with 3,237 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 3AM (local time) - 5.5ft (1.7m), 16s period with SSE 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 Thursday (Jul 09) at 3AM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.6m 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 2.3m 18s and forecast to arrive on Saturday (Jul 11) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 07) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 9th Jul)5.5ft (1.7m) 16s
Best Surf 3AM (Thu 9th Jul)5.5ft (1.7m) 16s
Most Powerful 3AM (Sat 11th Jul)7.5ft (2.3m) 18s

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


Updates in  hr  min  s Forecast update imminent

Alright, Rusty here again for the imperial crew.

So, the Hanamizu River forecast for the next sixteen days starts off with not much to shout about. The first few days are a complete write-off.

From Sunday the 5th of July, you’re looking at rain and onshore winds, with a tiny 2ft SE swell and combined energy down at just 34 – that’s flat to most. That rubbish carries through Monday the 6th with more rain and cross-shore winds.

Things start to look up on the morning of Tuesday the 8th of July. A clean 6ft SSE groundswell with a very long period of 17 seconds rolls in, and the energy jumps to 1843. That’s strong. The wind is a light cross-off from the NNE, so it should keep the surface tidy. The long period means the waves will be better for reef and point setups, but here at the beach/sandbar it might be a bit too lined up. It’ll be a session for the experienced crew.

The real standout comes on the morning of Saturday the 11th of July. Swell hits 7ft from the SSW with a 17-second period and a massive 2876 combined energy – that’s strong. Wind is a light cross-onshore, so there will be a bit of texture, but still very surfable. At 7ft, this is expert territory. Beginners stay on shore.

If you want the cleanest, friendliest session, head out on the morning of Sunday the 12th of July. The swell drops to a manageable 5ft from the SSW with a 16-second period, but the wind goes glassy from the SW. Combined energy is still decent at 966. That should be the best balance of power and clean faces all run.

After that, it fades hard. From lunchtime Sunday the 12th through to the end of the forecast on the 20th of July, the swell drops below 3ft and the energy falls off a cliff. From the 13th on, it’s all poor conditions and weak, short-period wind slop.

Water temp on the 5th is 74°, which is just 1° cooler than average for this time of year – pretty normal.

So the call is: the morning of Saturday the 11th of July for the heaviest, biggest set waves, or the glassy morning of Sunday the 12th of July for the cleanest, most enjoyable waves for the experienced surfer. The river mouth can be fickle, but it will be worth it for those two windows.

Rusty

Short Range Forecast

Heavy rain (total 63mm), heaviest during Mon afternoon. Warm (max 25°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Wed afternoon, min 21°C on Wed night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
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
1
0
3
3
3
3
3
2
4
3
1
4
3
3
4
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
SE
5
0.8
SSE
6
0.9
SSE
7
1.3
SE
7
0.4
SE
14
0.6
SSE
14
0.7
SSE
15
1
SSE
14
1.2
SE
16
1.7
SSE
17
1.8
SSE
16
1.7
SSE
16
1.5
S
15
1.8
S
16
1.9
S
16
2
S
17
2.2
SSW
16
2.3
SSW
18
2.2
SSW
17
1.9
SSW
16
1.7
SSW
16
Wave Graph
Metric surfscale
Energy kJ
25
47
77
151
70
138
201
437
702
1714
1631
1324
991
1551
1750
2318
2458
3201
2876
1896
1474
Wind (km/h)
5
E
10
SE
10
E
10
NE
20
NE
20
NNE
20
NNE
20
NE
10
NE
10
ENE
10
S
5
S
5
ESE
15
S
5
WSW
10
S
15
S
10
WSW
10
S
10
SSW
10
W
Wind State
glassy
on
cross-on
cross
cross
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross
cross-off
High Tide
8:38PM1.40m
7:54AM1.24m
9:08PM1.40m
8:58AM1.15m
9:41PM1.39m
10:25AM1.08m
10:19PM1.38m
12:24PM1.08m
11:05PM1.37m
2:23PM1.17m
00:00AM1.38m
3:42PM1.29m
1:03AM1.41m
Low Tide
1:46PM0.33m
2:30AM0.77m
2:20PM0.45m
3:25AM0.70m
2:58PM0.60m
4:28AM0.62m
3:45PM0.76m
5:38AM0.51m
4:48PM0.92m
6:49AM0.38m
6:20PM1.05m
7:55AM0.23m
7:58PM1.11m
rain showers
cloud
light rain
heavy rain
heavy rain
heavy rain
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:33
4:33
4:35
4:35
4:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
7:00
7:00
7:00
6:59
 mm
2
4
14
30
13
Temp °C
24
24
23
21
21
20
23
25
23
24
25
23
24
25
23
25
25
24
26
27
25
Feels °C
27
26
26
23
21
18
22
24
24
25
26
24
25
25
25
26
25
26
27
29
27
Swell 1
Height (m)
Direction
Period (s)
0.3
SSE
4
0.8
SSE
6
0.9
SSE
7
0.7
SE
7
0.7
SE
7
0.6
SSE
14
0.7
SSE
15
1
SSE
14
1.2
SE
16
1.7
SSE
17
1.8
SSE
16
1.7
SSE
16
1.5
S
15
1.8
S
16
1.9
S
16
2
S
17
2.2
SSW
16
2.3
SSW
18
2.2
SSW
17
1.9
SSW
16
1.7
SSW
16
Energy kJ
4
47
77
49
47
138
201
437
702
1714
1631
1324
991
1551
1750
2318
2458
3201
2876
1896
1474
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
10
0.1
SE
10
0.1
SE
15
0.4
SE
15
0.4
SE
14
0.6
SE
7
0.5
SE
12
0.8
ESE
8
0.7
SSE
19
0.9
E
9
0.8
ESE
9
0.4
S
20
0.7
S
19
0.5
ESE
8
0.5
ESE
9
0.4
ESE
8
Energy kJ
4
4
9
54
70
29
67
64
375
129
103
125
358
33
44
20
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
6
0.1
SE
16
0.2
SSW
7
0.1
SW
6
0.2
SSE
16
0.1
S
7
0.4
SE
7
0.7
SE
11
0.9
SSE
19
0.7
ESE
9
Energy kJ
1
10
4
2
27
1
13
112
630
80
Wind waves
Height (m)
Direction
Period (s)
0.7
SE
5
1.3
SE
7
0.7
NNE
4
0.5
NNE
4
0.5
NNE
3
0.7
S
4
0.7
SSW
4
Energy kJ
25
151
14
7
7
12
15
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
2
1
3
3
4
4
4
4
4
4
4
5
4
4
1
4
4
Distance (km)
203
36
27
19
123
19
123
19
10
19
12
12
19
43
0
43
62
0
76
104
0
Best forecast wave conditions in Kanagawa
Rating
(10 max)
1
2
1
3
4
4
4
4
4
4
4
5
4
4
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
2
2
3
2
3
4
5
5
6
6
5
4
7
5
9
9
6
9
5
Header Global
Rating
(10 max)
5
9
7
5
5
8
7
5
5
9
8
9
9
6
6
5
5
4
6
5
5
  • Map Icons:
  • Break
  • 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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