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Surf Forecasts

Mainside surfForecast / Okinawa / Japan

information circle48hr Weather and Surf, issued 2 pm Wednesday 16 Apr 2025 JST
Forecast update in hr  min  s Forecast update imminent
Mainside surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mainside sea temperature is
21.7° C
 (Which is 2.0°C colder than average for this time of year)

How big are the waves at Mainside today?

The current surf forecast for Mainside at 5PM is: 0.7m 8s primary swell from a North-northwest direction and 0.2m 13s secondary swell from a East-northeast direction (forecast issued at 02:00pm April 16). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (16 Apr)--
Afternoon (16 Apr)2.5ft (0.8m)8s
Evening (16 Apr)2ft (0.6m)8s

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

Hourly12 Days
Okinawa Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM
Rating
(10 max)
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
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
0
0
0
0
0
0
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
NNW
0.8
NNW
0.7
NNW
0.6
NNW
0.5
N
0.4
NNW
0.2
ENE
0.2
ENE
0.2
ENE
0.2
ENE
0.2
ENE
0.2
ENE
0.2
ENE
0.2
ENE
0.1
NE
0.2
E
0.2
E
1.6
ENE
1.6
E
1.4
E
1.1
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.6
SSW
0.7
SW
0.8
SW
0.8
WSW
0.5
W
0.6
WSW
0.6
WSW
0.5
SW
0.3
E
0.3
E
0.3
E
0.5
W
0.4
WNW
0.3
E
0.3
E
0.3
E
0.2
W
0.2
W
0.7
SSW
0.8
SSW
0.9
SSW
1.1
SW
1.3
SW
1.4
SW
0.1
N
0.1
N
1.1
W
1.5
W
1.6
WNW
1.3
W
1.2
NNW
1.3
NNW
1.4
NNW
Period(s) (?)988877121212121212121212101056671010101010104444455599106699955444556667877777
Wave
Graph
(?)Metric surfscale
Energy (?)1268567492718151515151514141458800148107888881181621229171710151416161315151522152028498413311134263232154120154186
Wind
(km/h)
15
S
20
S
20
SSE
20
SSE
20
SSE
20
S
20
SSE
25
SSE
25
SSE
25
SSE
25
SSE
25
SSE
25
SSE
30
SSE
30
SSW
20
W
15
NNE
15
E
20
ESE
20
ESE
15
ESE
15
E
20
ESE
20
SE
15
SSE
15
S
15
S
20
SSW
20
SW
25
SW
20
WSW
20
W
20
W
15
WNW
10
W
5
SW
5
S
5
S
5
SE
15
SE
15
SSE
15
S
15
S
15
SSW
20
S
20
S
20
S
25
SSW
30
SSW
35
SSW
25
SW
25
SW
35
NNW
35
N
35
N
30
N
25
NNE
20
NNE
20
NE
20
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		crossoffoffoffoffoffoffoffcross-
off		cross-
off		cross-
off		crosscrosscross-
on		cross-
on		ononononcrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscross-
on		cross-
on		cross-
on		crosscrosscrosscross-
off		cross-
off
High Tide
/ height (m)
9:17PM
1.67
8:41AM
1.85
9:55PM
1.59
9:10AM
1.79
10:43PM
1.50
9:45AM
1.70
11:50PM
1.41
10:33AM
1.57
1:31AM
1.38
11:58AM
1.45
3:11AM
1.45
2:12PM
1.42
4:09AM
1.57
3:50PM
1.55
Low Tide
/ height (m)
2:52PM
0.13
2:47AM
0.74
3:25PM
0.16
3:16AM
0.84
4:04PM
0.23
3:53AM
0.95
4:54PM
0.33
4:47AM
1.06
6:05PM
0.44
6:32AM
1.13
7:40PM
0.51
8:47AM
1.05
9:13PM
0.49
10:05AM
0.85
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Sunrise-------6:03-------6:03-------6:01-------6:01-------6:00------5:58-------5:58-----
Sunset--6:52-------6:52-------6:53-------6:53-------6:54-------6:54-------6:55-------6:55-
clearpart cloudpart cloudcloudcloudcloudcloudcloudpart cloudcloudpart cloudlight rainmod rainmod rainthunderstorm thunderstorm light raincloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudcloudthunderstorm thunderstorm cloudthunderstorm thunderstorm light rainlight rainlight raincloudpart cloudpart cloudpart cloudpart cloudpart cloudrain showersthunderstorm thunderstorm thunderstorm thunderstorm part cloudclearcloudpart cloudpart cloudpart cloudcloudcloudlight raincloudlight rainlight raincloudpart cloudpart cloudclear
Rain (mm)
-----------386132--------14-22112------11121--------1-21----
Temp. °C202020191920202021222120202122222022202121212122242524242323232222222222222222232525252423232324242423232019171718191919
Feels °C (?)171617161618181719201918191920232123192122222123252726252423242222242525252525252627272624242324232323231715121314151616
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>

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 Mainside 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 Mainside at:
surf-forecast.com

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