Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 2 am 21 Jul 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
26.0° 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 20 Jul 2026:

  • Best quality surf: Sunday 26 Jul, 9PM (local time) - 1.5ft (0.4m), 10s period, SSW swell with glassy winds.
  • Most powerful swell: Tuesday 28 Jul, 3AM (local time) - 2.5ft (0.7m), 9s period, SSW swell with 84 kJ wave energy.
  • Next surfable swell (1★+): Sunday 26 Jul, 9PM (local time) - 1.5ft (0.4m), 10s 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 (Jul 26) at 9PM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.3m and 11s. Another secondary swell of 0.3m and 3s is also forecast. 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 0.7m 9s and forecast to arrive on Tuesday (Jul 28) at 3AM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 26th Jul)1.5ft (0.4m) 10s
Best Surf 9PM (Sun 26th Jul)1.5ft (0.4m) 10s
Most Powerful 3AM (Tue 28th Jul)2.5ft (0.7m) 9s

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


The Lowdown

G’day, Rusty here. Let’s be real – this 16-day stretch for Hanamizu River is mostly a flat spell. It’s a beginner-friendly beach and sandbar break, fairly open to the swell coming from the SE, but the first week and a half is tiny and ugly.

From now through the end of July, it’s a long, boring run. Swell is mostly under 2ft, cross-onshore breezes, and the energy is weak – barely above 100 (13 to 98) in combined readings. That’s about an 11-day gap with nothing worth wetsuiting up for. Even the rare glassy morning, like Friday the 24th in the morning or Sunday the 26th in the afternoon, only gives you knee-high dribble. Not worth the drive.

Finally, on Monday the 27th of July afternoon, there’s a pulse: 2ft SSW swell with a 9-second period, combined energy of 86 – still weak, but it’s glassy. The report says “surfable waves but very ordinary,” but it’s the first real chance you get.

The real standout shows up on Monday the 3rd of August in the morning: 5ft SSW swell, 14-second period, combined energy hitting 794 (moderate), and glassy conditions with offshore NW wind. Water temp is about 79°F – normal for the time of year, nothing weird. The swell direction (SSW) isn’t a perfect match for the optimal SE direction, but the clean, glassy surface and decent size make it the best window. It’s still beginner-friendly height, so good for the learning crew. With a 14-second period, that’s groundswell – longer lulls between sets, easier paddling, but it can make the sandbar break a bit straight. Worth checking.

Tuesday the 4th of August morning is similar: 5ft SSW, 14 seconds, glassy, combined energy at 946 – another strong option. After that, it drops off.

So, my pick is Monday the 3rd of August morning at Hanamizu River. Clean, glassy, chest-to-shoulder-high SSW swell. Crowds are “sometimes” around, so expect a few others on the sandbar.

It’s been flat, but there’s a pulse coming.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Tue night. Warm (max 31°C on Tue morning, min 27°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 29mm), heaviest during Fri night. Warm (max 30°C on Fri morning, min 24°C on Sat night). Wind will be generally light.

Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
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
0
0
0
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSE
8
0.6
SSW
4
0.8
SW
4
0.5
SW
4
0.4
SSW
3
0.4
SSW
4
0.2
SSE
10
0.4
SSW
6
0.6
SW
4
0.2
SSE
9
0.2
SSE
9
0.3
SE
11
0.3
SE
10
0.3
SE
10
0.2
SSE
15
0.1
SE
15
0.3
SE
11
0.3
SE
11
0.4
SSW
9
0.6
SSW
9
0.7
SSW
9
Wave Graph
Metric surfscale
Energy kJ
6
12
21
9
5
7
10
12
13
12
11
18
15
15
22
8
18
18
26
61
82
Wind (km/h)
5
S
15
S
10
WNW
5
SSE
10
SSE
10
WNW
10
ENE
15
S
10
NW
5
SSE
15
S
10
NNE
5
E
15
S
5
E
5
E
5
S
5
SSE
10
NE
5
SSW
0
NW
Wind State
cross-on
cross-on
off
on
cross-on
cross-off
cross-on
cross-on
off
glassy
cross-on
cross-off
cross-on
cross-on
glassy
cross-on
glassy
glassy
cross
glassy
glassy
High Tide
9:26AM1.10m
9:12PM1.37m
10:59AM1.01m
9:42PM1.35m
1:53PM1.02m
10:23PM1.31m
4:27PM1.11m
11:26PM1.28m
4:24PM1.19m
00:48AM1.28m
4:44PM1.26m
1:59AM1.31m
5:07PM1.31m
2:54AM1.37m
Low Tide
2:44PM0.76m
4:27AM0.55m
3:05PM0.90m
5:40AM0.52m
3:14PM1.02m
6:57AM0.47m
5:02PM1.11m
8:03AM0.40m
7:57PM1.13m
8:56AM0.32m
9:09PM1.09m
9:39AM0.25m
9:52PM1.04m
clear
clear
thunderstorm
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
light rain
rain showers
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:43
4:43
4:45
4:45
4:46
4:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:53
6:53
6:52
6:52
6:52
6:51
 mm
2
1
1
2
6
7
3
5
2
1
5
2
12
Temp °C
31
30
30
30
30
29
30
31
29
30
29
27
29
29
26
24
24
25
27
27
26
Feels °C
35
33
34
35
35
33
34
35
34
35
33
31
33
32
30
28
28
30
31
32
31
  • 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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