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Surf Forecasts:

Mera surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 pm Thursday 18 Dec 2025 JST
Forecast update in hr  min  s Forecast update imminent
Mera surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mera sea temperature is
20.8° C
 (Which is 1.5°C warmer than normal for this time of year)

How big are the waves at Mera today?

The current surf forecast for Mera at 1AM is: 0.2m 10s primary swell from a East-southeast direction and 0.3m 6s secondary swell from a Southwest direction (forecast issued at 08:00pm December 18). An open ocean swell of 0.4m 14s is not directed at the surf break, a second open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (19 Dec)0.5ft (0.2m)11s
Afternoon (19 Dec)2.5ft (0.7m)5s
Evening (19 Dec)0.5ft (0.2m)11s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Thu
18
Friday
19
Saturday
20
Sunday
21
6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 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
See all maps
Wave Height (m) & direction (?)
0.4
SW
0.4
SW
0.2
ESE
0.2
ESE
0.2
ESE
0.2
ESE
0.2
ESE
0.7
ESE
0.2
ESE
0.2
ESE
1.5
SE
1.6
SE
1.8
SE
1.7
SSE
1.7
SSE
1.9
SSE
2.1
S
2.3
S
2.4
S
2.4
S
2.5
S
2.5
S
1.9
SSE
1.9
SSE
Period(s) (?)6610101011115111166666677778888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1414910101111221111136184229202218300390488595636699746453464
Wind
(km/h)
20
NE
15
ENE
20
NE
20
NE
20
NE
15
NE
15
NNE
5
ENE
10
SE
15
SSE
15
S
25
S
35
SSE
30
S
30
S
25
SSW
30
S
30
SSW
40
SSW
40
SSW
35
SSW
40
SSW
30
SSW
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffcross-
off		glasscrosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononon
High Tide
/ height (m)
5:08AM
1.33
3:08PM
1.42
5:42AM
1.36
3:43PM
1.43
6:17AM
1.37
Low Tide
/ height (m)
9:53PM
0.08
9:58AM
0.94
10:27PM
0.03
10:36AM
0.94
11:01PM
-0.01
11:11AM
0.93
Thu
18
Friday
19
Saturday
20
Sunday
21
Sunrise-----6:41-------6:43-------6:43--
Sunset-------4:30-------4:31-------4:31
clear
cloud
light rain
cloud
part cloud
part cloud
cloud
part cloud
cloud
light rain
light rain
light rain
part cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
light rain
mod rain
mod rain
heavy rain
Rain (mm)
--1------111---131082591016
Temp. °C121211111111121415161617181818171718192018181817
Feels °C (?)68766791313141312111212131214131313121415
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mera 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 Mera at:
surf-forecast.com

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