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Surf Forecasts:

Nagahama surfForecast / Kanagawa / Japan

information circle12 Day Weather and Surf, issued 8 am Sunday 18 Jan 2026 JST
Forecast update in hr  min  s Forecast update imminent
Nagahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nagahama sea temperature is
15.4° C
 (Which is 2.0°C colder than average for this time of year)

Best Forecast Surf Conditions for Nagahama this week:

The surf forecast for Nagahama over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jan 22) at 12AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.4m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Nagahama in the next 12 days are 2.1m 7s and forecast to arrive on Saturday (Jan 24) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Jan 20) at 9PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 22nd Jan)2.5ft (0.8m) 5s
Best Surf12AM (Thu 22nd Jan)2.5ft (0.8m) 5s
Most Powerful 9PM (Sat 24th Jan)7ft (2.1m) 7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 3mm), mostly falling on Sun night. Very mild (max 14°C on Mon night, min 2°C on Tue night). Winds increasing (light winds from the SSE on Mon afternoon, fresh winds from the NNE by Tue night).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Wed night. Mild temperatures (max 7°C on Fri afternoon, min 3°C on Wed morning). Wind will be generally light.

Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
E
0.1
S
0.1
SE
0.1
SE
0.1
SE
1.6
SW
0.6
SW
0.2
SSW
0.1
SE
0.3
SE
0.4
SE
0.4
SE
0.3
SE
0.4
SW
0.4
SW
0.2
SSW
0.6
SW
1.4
SW
1.2
SW
1.6
SW
1.4
SW
Period(s) (?)117567566101010101099855678
Wave
Graph
(?)Metric surfscale
Energy kJ (?)01122148283415273616212161611999207248
Wind
(km/h)
30
NNE
20
ENE
20
NE
25
N
5
SSE
35
WSW
35
NNE
25
NE
30
NNE
30
NNE
10
ESE
15
NNE
15
NNE
15
N
15
N
10
E
10
SW
15
W
35
WSW
65
WSW
40
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offoffcross-
off		cross-
on		onoffoffoffcross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off		oncross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
4:00PM
1.42
6:09AM
1.40
4:44PM
1.45
6:36AM
1.40
5:26PM
1.46
7:02AM
1.39
6:07PM
1.44
7:27AM
1.37
6:49PM
1.38
7:52AM
1.35
7:34PM
1.29
8:19AM
1.32
8:25PM
1.18
Low Tide
/ height (m)
10:47AM
0.88
11:08PM
-0.07
11:22AM
0.81
11:44PM
-0.06
11:55AM
0.74
12:17AM
-0.00
12:30PM
0.66
12:50AM
0.09
1:06PM
0.60
1:22AM
0.21
1:45PM
0.55
1:53AM
0.35
2:29PM
0.51
2:25AM
0.51
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunrise6:48--6:48--6:48--6:47--6:47--6:46--6:46--
Sunset-4:53--4:54--4:55--4:57--4:58--4:59--5:00-
part cloud
cloud
light rain
part cloud
clear
part cloud
part cloud
cloud
cloud
cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
Rain (mm)
--3--------2---------
Temp. °C910991214884345454576797
Feels °C (?)254699-10-7-600-2-3-5021-5-6-3
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nagahama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Nagahama at:
surf-forecast.com

Information about the Nagahama Surf forecast

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

Nagahama is 6 km (4 miles) from Miura. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Miura. Miura has rooms for a wide range of budgets as well as car hire and transport links.

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