Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 2 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
25.2° C
0.4° 

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 17 Jul 2026:

  • Most powerful swell: Wednesday 22 Jul, 3AM (local time) - 2.5ft (0.7m), 5s period, SW swell with 24 kJ wave energy.

Best Forecast Surf Conditions for Hanamizu River this week:

The most powerful waves expected at Hanamizu River in the next 16 days are 0.7m 5s and forecast to arrive on Wednesday (Jul 22) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 3AM (Wed 22nd Jul)2.5ft (0.7m) 5s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s heading our way.

First up, it’s a tough start. From now right through most of July, the waves are pretty much nonexistent for a decent paddle. We’re looking at a long stretch of tiny, weak swell with poor conditions. The wind is mostly cross-onshore, keeping things choppy and messy. There’s a real gap of about 10 days where you’d be better off doing something else.

Things finally start to show a pulse of life around Monday morning, July 27th. The swell at Hanamizu River (beach/sandbar) bumps up to 4ft from the SSE, with a period of 13 seconds. The combined energy hits 560 – that’s moderate power, but it’s still a bit raw with cross-shore winds. It’s a marginal call, but it’s the first real sign things are waking up.

The standout window looks to be Tuesday morning, July 28th. The swell holds at 4ft from the S, period 12 seconds, and here’s the kicker – the wind goes glassy. That’s a major positive. The combined energy is a solid 607 (moderate), and the water is sitting around 77°, which is about average for this time of year. For a beginner-friendly spot, this is about as good as it gets in this run. The swell direction is from the S, which is a bit off the optimum SE, but with glassy conditions, it’ll be clean and fun. Crowds are possible here at times, so get in early.

Wednesday morning, July 29th, is the other real standout. Swell is 5ft from the SSW, period 15 seconds – that’s a long period groundswell, bringing proper shape and energy. The combined energy is 974, strong and powerful. It’s glassy again in the morning. For a beach/sandbar setup, that long period can make it break a little straight, but with the clean wind, it’ll still offer some memorable waves. This is the best on offer for the whole forecast, but heads up – 5ft is getting a bit much for absolute beginners.

After that, the swell drops back and the wind turns onshore again, spoiling the party through the end of July and into August 1st. The last few days show some lingering energy but the wind is just too strong and cross-onshore, making it a write-off for paddle surfing.

So, bottom line: hang tight through the dry spell. The best bets are the glassy mornings on July 28th and 29th. The 29th has the most power, but the 28th will be the most user-friendly. Don’t sleep on it.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 8mm), mostly falling on Wed afternoon. Warm (max 30°C on Mon afternoon, min 27°C on Mon night). Wind will be generally light.

Fri
17
Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
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
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
SSW
8
0.2
SSE
9
0.3
SE
9
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.7
S
4
0.2
S
8
0.2
SSE
9
0.7
SSW
4
0.7
SSW
4
0.6
SW
4
0.2
ESE
11
0.5
SSW
4
0.4
SSW
5
0.5
S
5
0.6
SSW
4
0.2
SSE
10
0.2
SSE
10
0.2
SSE
10
Wave Graph
Metric surfscale
Energy kJ
6
8
12
11
10
9
12
6
7
15
16
14
12
11
9
15
12
15
10
12
Wind (km/h)
15
SSE
10
SSE
10
SSE
15
SSE
15
S
10
S
20
SSE
10
WSW
5
SSE
15
SSE
10
W
5
S
15
S
5
W
5
SSE
15
S
15
N
5
ESE
10
S
0
NW
Wind State
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-off
on
cross-on
cross-off
glassy
cross-on
cross-off
on
cross-on
cross-off
on
cross-on
glassy
High Tide
7:33PM1.44m
6:35AM1.46m
7:58PM1.42m
7:26AM1.35m
8:23PM1.40m
8:21AM1.23m
8:47PM1.39m
9:26AM1.10m
9:12PM1.37m
10:59AM1.01m
9:42PM1.35m
1:53PM1.02m
10:23PM1.31m
Low Tide
1:00AM0.77m
1:19PM0.24m
1:45AM0.69m
1:50PM0.42m
2:33AM0.63m
2:19PM0.59m
3:26AM0.59m
2:44PM0.76m
4:27AM0.55m
3:05PM0.90m
5:40AM0.52m
3:14PM1.02m
thunderstorm
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
thunderstorm
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:39
4:41
4:41
4:41
4:43
4:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:57
6:55
6:54
6:54
6:53
6:53
 mm
2
5
1
3
3
1
2
6
Temp °C
28
26
27
27
26
27
28
27
29
30
28
30
30
28
30
30
28
29
29
28
Feels °C
31
31
29
29
29
30
30
31
33
35
31
34
34
32
34
34
33
34
33
34
  • 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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