Nagahama surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 2 am Wednesday 20 May 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
20.0° C
(Which is slightly cooler than normal)

How big are the waves at Nagahama today?

The current surf forecast for Nagahama at 8AM is: 0.4m 10s primary swell from a Southeast direction and 0.4m 5s secondary swell from a South-southeast direction, 0.5m 4s secondary swell from a South direction (forecast issued at 02:00am May 20). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (20 May)1.5ft (0.4m)10s
Afternoon (20 May)3ft (0.9m)4s
Evening (20 May)2.5ft (0.8m)4s

Table - waves today at Nagahama. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 22mm), heaviest during Thu night. Warm (max 22°C on Wed morning, min 13°C on Fri afternoon). Winds increasing (light winds from the W on Thu afternoon, strong winds from the N by Fri morning).

Wednesday
20
Thursday
21
Friday
22
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
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
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.3
SE
10
0.9
S
4
0.9
S
4
0.8
SSW
4
0.3
SE
10
0.3
SE
9
0.3
SE
9
0.8
S
6
1.5
S
7
1.8
SSW
7
2
SSW
7
1.3
S
7
1
S
7
0.9
S
8
0.8
S
7
0.7
S
7
0.6
S
7
0.5
S
7
0.4
S
7
0.3
S
7
Wave Graph
Metric surfscale
Energy kJ
29
29
40
28
16
30
33
25
14
14
14
42
196
295
405
181
112
90
70
52
39
26
16
9
Wind (km/h)
30
SSW
25
SW
20
SSW
20
SSW
25
SSW
30
SSW
35
SSW
30
SSW
25
SW
20
SSW
20
SSW
25
SSW
35
SW
30
WSW
10
W
30
NNE
35
NNE
35
NNE
45
N
50
N
50
N
45
N
45
NNE
45
NNE
on
on
on
on
cross-on
cross-on
on
on
on
on
on
cross-on
on
on
cross-on
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
5:32AM1.46m
8:03PM1.30m
6:06AM1.40m
8:56PM1.25m
6:46AM1.31m
Low Tide
00:11AM0.91m
12:50PM0.02m
00:49AM0.96m
1:32PM0.11m
1:38AM0.98m
2:20PM0.23m
cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
rain showers
rain showers
light rain
rain showers
cloud
cloud
light rain
mod rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:40
6:42
6:43
1
1
1
1
1
8
2
1
1
3
1
1
Temp °C
20
20
20
20
22
22
22
22
22
22
21
21
21
22
20
17
16
15
15
14
14
13
14
14
17
18
19
19
20
19
19
20
21
22
20
20
18
19
21
13
10
9
7
5
5
4
5
6
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.5
SE
10
0.4
ESE
10
1.6
SSW
7
1.3
S
7
1
S
7
0.9
S
8
0.8
S
7
0.7
S
7
0.6
S
7
0.5
S
7
0.4
S
7
0.3
S
7
Energy kJ
29
29
40
28
16
16
15
15
14
14
14
13
46
38
245
181
112
90
70
52
39
26
16
9
Swell 2
Height (m)
Direction
Period (s)
0.4
SSE
5
0.1
S
6
0.1
S
6
0.1
S
6
0.4
ESE
10
0.1
SE
10
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
E
11
0.1
E
11
0.1
E
11
0.1
E
11
Energy kJ
10
1
1
1
38
4
3
3
3
2
2
2
2
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
E
11
0.1
E
11
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
Energy kJ
5
3
2
2
2
2
2
Wind waves
Height (m)
Direction
Period (s)
0.7
SSW
4
0.6
SSW
4
0.5
SSW
4
0.5
S
4
0.6
S
4
0.9
S
4
0.9
S
4
0.8
SSW
4
0.6
SSW
4
0.5
S
4
0.5
S
4
0.8
S
6
1.5
S
7
1.8
SSW
7
2
SSW
7
0.4
NNE
3
0.5
NNE
3
0.7
NNE
3
0.6
NNE
3
0.8
NNE
4
0.9
NNE
4
0.9
NNE
4
0.9
NNE
4
Energy kJ
16
10
9
9
12
30
33
25
14
9
9
42
196
295
405
3
5
10
9
16
24
24
24
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
2
2
1
1
1
1
1
1
1
2
3
3
3
1
2
1
1
1
1
1
Distance (km)
42
42
42
237
237
237
87
42
42
85
87
122
122
24
11
46
87
142
471
471
506
488
489
553
Best forecast wave conditions in Kanagawa
Rating
(10 max)
1
1
1
1
1
2
3
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
2
2
2
2
2
1
2
2
2
2
2
2
3
3
4
4
2
2
2
1
1
1
Header Global
Rating
(10 max)
4
4
4
5
5
5
4
4
4
5
5
4
4
5
5
4
4
4
4
5
5
5
7
8
  • 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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