Hanamizu River Surf Break

Lat Long: 35.29° N 139.26° E

Hanamizu River Surf Forecast and Surf Report

Issued: 8 pm 23 Jul 2026 (local time)

Forecast update in  hr  min

Today's Hanamizu River sea temperature is
26.9° C
0.8° 

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 23 Jul 2026:

  • Most powerful swell: Tuesday 28 Jul, 12AM (local time) - 1.5ft (0.5m), 8s period, S swell with 34 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 0.5m 8s and forecast to arrive on Tuesday (Jul 28) at 12AM. 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 Powerful12AM (Tue 28th Jul)1.5ft (0.5m) 8s

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 on the menu for the Hanamizu River area over the next couple of weeks.

Truth be told, it’s a slow start. We’re looking at a long stretch of pretty ordinary conditions from now all the way through the end of July and into the first few days of August. The first week and a half is basically a write-off. Most days you’ll find small, weak swell—barely enough to get a wobble on—with a lot of cross-onshore wind messing things up. The combined energy of all swells directed here sits in the low double digits (24 to 65) for nearly ten days, which is weak. The water temp is about average for the time of year, so nothing wild there.

There are a few moments of glassy wind, like Monday afternoon the 27th of July and Saturday morning the 1st of August, but the swell is just too tiny—0.3m at best—to get excited about. That’s about 1 foot. It’s a frustrating gap of about 12 days where there’s no real surf to recommend.

Now, things finally start to show some life around the 4th of August. On Tuesday morning the 4th, we get a pulse of 0.7m from the SE, with a very long period of 16 seconds, but the wind is onshore and the combined energy climbs to 337 (moderate). The surf is still marginal, but it’s a sign.

The real standout hits on the 6th of August into the 7th. Thursday morning the 6th brings a solid 2.1m swell from the SE, with a very long period of 18 seconds and cross-offshore winds from the NNE. That’s about 7 feet. The combined energy of all swells directed here is a strong 2896. Friday morning the 7th keeps that energy going with a 1.9m swell, still from the SE, 17-second period, and clean cross-offshore winds. That’s about 6 feet. This is the best on offer, but honesty—2.1m and 1.9m with that long period is serious. It’s expert territory at that size, not for beginners. The period is so long that it’ll be breaking straight at the beach, but the wind is clean, so it’ll look good for the experienced crew.

Saturday morning the 8th sees the swell fade back to 0.6m from the ESE, with glassy conditions, but it’s small again. That’s about 2 feet.

If you’re a kiter, the windier, choppy days in the middle of the stretch might be more your thing, because for paddle surfing, it’s a tough wait. The best bet is that Thursday and Friday session in the first week of August, but it’s a ways out yet, so keep an eye on it.

Rusty, signing off.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Sat night. Warm (max 29°C on Thu night, min 25°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 49mm), heaviest during Tue night. Warm (max 28°C on Mon morning, min 24°C on Mon night). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
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
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
10
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
0.3
SE
10
0.3
SE
10
0.5
S
8
0.3
SSW
9
0.5
S
6
0.4
SSW
8
0.3
SSW
6
0.3
SSW
8
0.2
SSW
8
Wave Graph
Metric surfscale
Energy kJ
12
12
11
18
15
15
22
8
18
20
16
16
34
15
18
24
8
13
6
Wind (km/h)
0
N
10
SE
15
S
5
ENE
5
E
10
SSE
10
ENE
10
S
20
S
10
N
5
E
5
S
15
N
15
NE
5
SSE
5
ESE
10
E
10
S
5
SSW
Wind State
glassy
on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-on
glassy
cross-off
cross
cross-on
glassy
cross-on
cross-on
cross
High Tide
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
5:29PM1.36m
3:40AM1.42m
5:51PM1.39m
Low Tide
6:57AM0.47m
5:02PM1.11m
8:03AM0.40m
7:57PM1.13m
8:56AM0.32m
9:09PM1.09m
9:39AM0.25m
9:52PM1.04m
10:16AM0.18m
10:26PM0.97m
10:50AM0.14m
10:59PM0.90m
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:45
4:45
4:46
4:47
4:48
4:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:52
6:51
6:50
6:49
 mm
1
3
3
2
8
1
8
4
16
1
18
2
Temp °C
29
28
28
27
28
28
26
27
28
27
28
27
26
26
27
24
25
26
25
Feels °C
34
31
31
32
33
32
31
29
30
31
32
32
31
29
30
27
28
28
27
  • 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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