Surf Forecast Surf Report

Kugenuma Rivermouth surfForecast / Kanagawa / Japan

information circle12 Day Weather and Surf, issued 2 pm Sunday 27 Apr 2025 JST
Forecast update in hr  min  s Forecast update imminent
Kugenuma Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kugenuma Rivermouth sea temperature is
18.6° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Kugenuma Rivermouth this week:

The surf forecast for Kugenuma Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (May 02) at 6PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.1m and 11s. Another secondary swell of 0.2m and 11s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kugenuma Rivermouth in the next 12 days are 0.9m 8s and forecast to arrive on Saturday (May 03) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (May 04) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Fri 2nd May)3ft (0.9m) 6s
Best Surf 6PM (Fri 2nd May)3ft (0.9m) 6s
Most Powerful 9AM (Sat 3rd May)3ft (0.9m) 8s

Table - best surf conditions forecast for Kugenuma Rivermouth over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Sun
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Fri
09
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SSW
1.1
SW
0.9
SSW
1.2
SSW
0.5
S
0.6
SSE
0.7
SSE
0.3
SSW
0.2
SSE
0.5
S
0.5
SSW
0.4
SSE
0.5
S
0.6
SSE
0.9
SSE
0.9
SSE
0.7
SSE
0.9
SSE
0.6
SE
0.5
SE
0.4
SE
0.4
SE
0.3
ESE
0.2
ESE
0.2
SSW
0.2
SSW
0.5
SSW
0.7
SSW
1.2
SSW
1.4
SSW
1
SSW
1.3
S
1.1
SSE
0.9
SSE
0.7
SSE
0.5
SSE
Period(s) (?)3665578883363566789101010101011151314181615131211109
Wave
Graph
(?)Metric surfscale
Energy (?)9885167124367136671062253664794624424251910122210116198010364625773362078347
Wind
(km/h)
25
S
15
WSW
25
SSW
40
SSW
0
S
5
SSE
15
SSE
15
ENE
5
SE
25
S
10
SSW
10
S
25
S
20
S
30
SSE
15
SE
5
NNW
10
NE
25
SE
15
NW
5
SE
20
S
10
W
10
NE
15
S
5
SSW
10
ESE
20
SSW
25
NE
25
NNE
15
E
5
SW
10
E
20
S
15
S
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
ononglassglasscross-
on
cross-
off
glassonononcross-
on
oncross-
on
cross-
on
cross-
off
offcross-
on
cross-
off
glassoncrosscross-
off
cross-
on
glasscrossonoffoffcross-
off
glasscross-
off
oncross-
on
on
High Tide
/ height (m)
5:14PM
1.33
4:17AM
1.40
5:50PM
1.33
4:39AM
1.44
6:28PM
1.30
5:04AM
1.46
7:10PM
1.26
5:32AM
1.45
7:57PM
1.20
6:03AM
1.40
8:55PM
1.15
6:38AM
1.32
10:14PM
1.11
7:19AM
1.19
11:59PM
1.12
8:37AM
1.05
1:11AM
1.17
11:17AM
0.96
1:49AM
1.21
1:30PM
1.01
2:17AM
1.24
2:45PM
1.11
2:41AM
1.28
Low Tide
/ height (m)
10:40PM
0.67
11:06AM
0.02
11:02PM
0.74
11:36AM
-0.04
11:25PM
0.80
12:09PM
-0.05
11:50PM
0.86
12:47PM
-0.02
12:18AM
0.92
1:30PM
0.06
12:53AM
0.98
2:21PM
0.17
1:50AM
1.04
3:31PM
0.30
5:53AM
1.02
5:07PM
0.41
7:31AM
0.86
6:38PM
0.48
8:14AM
0.69
7:45PM
0.52
8:47AM
0.52
8:36PM
0.57
9:18AM
0.36
Sun
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
01
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Fri
09
Sunrise--4:54--4:54--4:52--4:50--4:50--4:48--4:48--4:47--4:46--4:45--4:43--4:43
Sunset6:22--6:23--6:24--6:25--6:27--6:28--6:28--6:29--6:30--6:30--6:31--6:32--
part cloudcloudcloudlight rainrain showersclearclearclearclearclearclearclearclearpart cloudlight rainlight rainrain showersclearpart cloudpart cloudclearclearpart cloudcloudcloudheavy rainpart cloudclearpart cloudpart cloudcloudlight rainpart cloudpart cloudpart cloudcloud
Rain (mm)
---211---------531--------144-----1----
Temp. °C191820191417191817171719191818151619201919212020201818211718181515161717
Feels °C (?)131315111415161513121416151513131516171417181819181718191213141112121414

Short Range Forecast: Moderate rain (total 13mm), heaviest on Mon night. Warm (max 20°C on Mon morning, min 13°C on Mon night). Mainly strong winds.

Days 3-6 Weather Summary Light rain (total 9mm), mostly falling on Fri morning. Very mild (max 19°C on Thu morning, min 15°C on Fri morning). Winds decreasing (fresh winds from the SSE on Fri morning, calm by Fri night).

Days 6-9 Weather Summary Heavy rain (total 144mm), heaviest during Mon night. Warm (max 21°C on Sun afternoon, min 16°C on Sat night). Wind will be generally light.

Long Range Forecast: Some drizzle, heaviest during Wed night. Warm (max 21°C on Tue afternoon, min 14°C on Wed night). Winds decreasing (fresh winds from the NNE on Tue night, calm by Wed night).

  • 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 Kugenuma Rivermouth Surf forecast

The above surf forecast table for Kugenuma Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kugenuma Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Kugenuma Rivermouth 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 (Kugenuma Rivermouth) 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 Kugenuma Rivermouth 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.

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