Nagahama surfForecast / Kanagawa / Japan

information circle12 Day Weather and Surf, issued 2 am Friday 11 Jul 2025 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
27.1° C
(Which is 2.2°C warmer than normal 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 Monday (Jul 14) at 3PM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 1.1m and 4s. 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 2.4m 11s and forecast to arrive on Tuesday (Jul 15) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Jul 11) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Mon 14th Jul)3ft (0.9m) 11s
Best Surf 3PM (Mon 14th Jul)3ft (0.9m) 11s
Most Powerful 3PM (Tue 15th Jul)8ft (2.4m) 11s

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

Updates in  hr  min  s Forecast update imminent
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
Wave Height (m) & direction (?)
0.3
SSE
0.3
SSE
0.4
SE
0.5
SE
0.5
SE
0.6
SSE
0.6
SSE
0.5
SSE
0.6
SSE
0.6
SE
0.9
SE
1.1
SE
1.5
SSE
2.4
SE
1.8
SSE
1.6
SSE
1.3
SSE
1.1
SSE
0.8
SSE
1.4
S
1.1
S
0.8
S
0.8
S
0.6
S
0.5
SE
0.6
S
0.6
S
0.6
SSE
0.5
S
0.6
S
0.7
S
0.8
S
0.9
SE
1.3
SSE
1.4
SE
1.6
SE
Period(s) (?)6788888881011111111111010998888888881113131312131314
Wave
Graph
(?)Metric surfscale
Energy (?)815313331434539418925028253224619085743904041962411761038280638270821061772022585786747791031
Wind
(km/h)
30
NE
30
NE
25
NE
25
NE
10
S
10
NE
15
NE
0
SSE
20
NNE
30
N
15
N
25
SW
5
S
20
S
25
SSW
30
S
45
SW
40
SSW
30
SSW
35
SSW
25
SSW
10
SSW
20
S
10
SSE
10
NNE
10
SSE
10
ENE
15
NE
10
ESE
15
ENE
15
NE
10
S
5
ENE
10
ENE
10
SE
20
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffcrossoffoffglassoffcross-
off
cross-
off
oncross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
crossoffcrossoffoffcross-
off
offoffcross-
on
offoffcrossoff
High Tide
/ height (m)
6:27PM
1.49
4:53AM
1.55
6:57PM
1.49
5:35AM
1.55
7:26PM
1.47
6:18AM
1.51
7:54PM
1.45
7:02AM
1.45
8:22PM
1.42
7:50AM
1.36
8:52PM
1.40
8:48AM
1.25
9:24PM
1.37
10:05AM
1.15
10:01PM
1.35
12:03PM
1.09
10:48PM
1.34
2:27PM
1.15
11:50PM
1.34
3:46PM
1.26
1:00AM
1.36
4:30PM
1.36
2:05AM
1.41
Low Tide
/ height (m)
11:22AM
0.01
11:34PM
0.95
11:58AM
0.03
12:10AM
0.90
12:33PM
0.09
12:47AM
0.84
1:08PM
0.19
1:26AM
0.79
1:43PM
0.32
2:10AM
0.74
2:18PM
0.47
3:00AM
0.70
2:53PM
0.64
4:01AM
0.66
3:33PM
0.80
5:17AM
0.60
4:26PM
0.96
6:41AM
0.52
6:03PM
1.08
7:54AM
0.40
7:57PM
1.13
8:52AM
0.28
9:10PM
1.11
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Sunrise4:35--4:35--4:35--4:37--4:37--4:37--4:39--4:39--4:39--4:41--4:41--4:41--
Sunset-6:58--6:58--6:57--6:57--6:55--6:55--6:54--6:54--6:53--6:53--6:52--6:52-
part cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudrain showersheavy rainrain showersthunderstorm light rainrain showersthunderstorm mod rainheavy rainthunderstorm thunderstorm clearclearclearclearclearpart cloudpart cloudpart cloudthunderstorm cloudthunderstorm part cloudpart cloudpart cloudclearclearrain showers
Rain (mm)
--------441112229812232--------1-5-----4
Temp. °C242522252524262726252728252627272626272727272827282827282927282827293027
Feels °C (?)212219252626293127252928292928272726272628303030323130303129313131333329

Short Range Forecast: Heavy rain (total 44mm), heaviest during Sun night. Warm (max 27°C on Sun afternoon, min 21°C on Fri night). Mainly strong winds.

Days 3-6 Weather Summary Heavy rain (total 70mm), heaviest during Wed night. Warm (max 28°C on Mon night, min 24°C on Mon night). Winds increasing (light winds from the S on Tue morning, strong winds from the SW by Wed afternoon).

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Thu morning. Warm (max 28°C on Fri afternoon, min 25°C on Fri night). Winds decreasing (fresh winds from the SSW on Thu afternoon, calm by Sat morning).

Long Range Forecast: Moderate rain (total 12mm), heaviest on Sun night. Warm (max 30°C on Tue afternoon, min 26°C on Sun night). Wind will be generally light.

  • 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 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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