Hanamizu River surfForecast / Kanagawa / Japan

information circle12 Day Weather and Surf, issued 8 pm Saturday 13 Dec 2025 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
18.9° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Hanamizu River this week:

The surf forecast for Hanamizu River over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 14) at 12PM. The primary swell is predicted to be 1.0m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Hanamizu River in the next 12 days are 2.4m 10s and forecast to arrive on Sunday (Dec 14) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Monday (Dec 15) at 6AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Sun 14th Dec)3.5ft (1.0m) 8s
Best Surf 6PM (Sun 14th Dec)8ft (2.4m) 10s
Most Powerful 6PM (Sun 14th Dec)8ft (2.4m) 10s

Table - best surf conditions forecast for Hanamizu River over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 19mm), heaviest on Sun morning. Very mild (max 13°C on Mon afternoon, min 6°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 11°C on Wed morning, min 8°C on Tue night). Wind will be generally light.

Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Sat
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
1
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
SE
0.7
SE
1.6
SSE
1.3
SW
0.4
SSE
0.4
SE
0.3
SE
0.2
SSE
0.2
SSE
0.4
SSW
0.3
SSW
0.2
SSW
0.1
E
0.1
SE
0.1
E
0.1
E
0.2
ESE
0.2
ESE
0.1
SE
0.1
SE
0.2
ESE
Period(s) (?)57991099888559101212911111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)45344326638221276225224448114410
Wind
(km/h)
10
NNE
20
NNE
10
SE
15
WNW
15
WNW
10
SSE
5
NE
5
NNE
10
SE
10
WNW
5
NNE
10
ESE
15
N
10
NNE
15
NE
10
NNE
10
NNE
5
ENE
5
NNE
0
ESE
10
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
oncross-
off
cross-
off
onglassglassonoffcross-
off
cross-
on
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
on
glassglasscross-
on
High Tide
/ height (m)
12:34AM
1.02
12:04PM
1.30
2:14AM
1.08
12:43PM
1.32
3:18AM
1.17
1:22PM
1.34
4:04AM
1.25
2:00PM
1.37
4:41AM
1.31
2:38PM
1.40
5:16AM
1.36
3:16PM
1.43
5:49AM
1.38
3:52PM
1.46
Low Tide
/ height (m)
5:28AM
0.84
7:26PM
0.55
6:40AM
0.93
8:10PM
0.43
7:47AM
0.98
8:48PM
0.32
8:42AM
1.00
9:24PM
0.23
9:28AM
1.01
10:00PM
0.16
10:06AM
1.01
10:35PM
0.11
10:41AM
1.00
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Sat
20
Sunrise-6:41--6:43--6:43--6:43--6:45--6:46--6:46-
Sunset--4:30--4:30--4:30--4:31--4:31--4:32--4:32
light rain
heavy rain
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
light rain
Rain (mm)
514------------------2
Temp. °C810121112131010109111110101091111121515
Feels °C (?)489789576688655589111416
  • 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 12 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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