Hanamizu River surfForecast / Kanagawa / Japan

information circle16 Day Weather and Surf, issued 2 pm Sunday 12 Apr 2026 JST
Forecast update in hr  min  s Forecast update imminent
Hanamizu River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hanamizu River sea temperature is
15.5° C
(Which is 2.5°C colder than average for this time of year)

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 Tuesday (Apr 14) at 9PM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.1m and 18s. 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 1.5m 16s and forecast to arrive on Saturday (Apr 18) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Apr 16) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 14th Apr)1.5ft (0.5m) 12s
Best Surf12AM (Thu 16th Apr)4.5ft (1.3m) 15s
Most Powerful12AM (Sat 18th Apr)5ft (1.5m) 16s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 20°C on Tue morning, min 16°C on Sun afternoon). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Thu morning. Very mild (max 18°C on Wed afternoon, min 10°C on Thu night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
1
1
1
3
2
0
1
1
1
3
3
3
3
2
Swell
Height Map
Wave Height (m) & direction (?)
0.6
S
0.6
SSE
0.3
SE
0.3
SE
0.3
SE
0.4
SE
0.4
SE
0.5
SE
0.7
SSE
1.1
SSE
1.3
SSE
1.3
SSE
1.2
SSE
1.4
SSE
1.3
SSE
1.4
SSE
1.5
SSE
1.4
SSE
1.4
SSE
1.6
SSE
1.4
SSE
Period(s) (?)3611111111121216161515161616161616161514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7271919194450732326127737636979988381042115010039661067774
Wind
(km/h)
25
S
10
W
5
ENE
10
SE
5
NW
15
ENE
15
SE
5
E
10
E
15
S
5
WSW
30
NNE
25
ENE
20
NE
20
NE
15
E
5
ENE
5
ENE
5
SSE
5
NW
5
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
off
crossonglasscrossonglasscross-
on
cross-
on
glasscross-
off
cross-
on
crosscrosscross-
on
glassglassglassglasscross-
on
High Tide
/ height (m)
2:42AM
1.31
1:38PM
1.17
3:01AM
1.38
2:40PM
1.28
3:22AM
1.44
3:30PM
1.39
3:44AM
1.48
4:17PM
1.48
4:06AM
1.52
5:03PM
1.53
4:30AM
1.55
5:50PM
1.54
4:55AM
1.57
Low Tide
/ height (m)
7:20PM
0.50
8:35AM
0.88
8:12PM
0.46
9:02AM
0.71
8:55PM
0.45
9:31AM
0.53
9:34PM
0.47
10:01AM
0.35
10:11PM
0.53
10:34AM
0.19
10:47PM
0.62
11:08AM
0.06
11:21PM
0.73
11:46AM
-0.01
Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunrise--5:13--5:13--5:11--5:09--5:09--5:07--5:05
Sunset6:12--6:13--6:14--6:14--6:15--6:15--6:16--
part cloud
part cloud
cloud
part cloud
clear
part cloud
clear
part cloud
clear
part cloud
light rain
rain showers
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
clear
Rain (mm)
----------13---------
Temp. °C161619191820201718181715171215161115161519
Feels °C (?)121519181818181717161710127911814151417
  • 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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