20 April 2026: Tsunami Alert Issued for NE Japan

A magnitude-7.4 earthquake off the coast of Sanriku has triggered a tsunami warning. latest updates

Flat Rock surfForecast / NSW – Newcastle / Australia

information circle48hr Weather and Surf, issued 3 pm Monday 20 Apr 2026 AEST
Forecast update in hr  min  s Forecast update imminent
Flat Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Flat Rock sea temperature is
22.3° C
(Which is normal for this time of year)
Updates in  hr  min  s Forecast update imminent
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
1
1
2
Swell
Height Map
Wave Height (m) & direction (?)
3
S
3
SSE
3
SSE
3
SSE
2.5
SSE
2.5
SSE
0.6
SE
0.7
SE
0.6
SE
2.3
SSE
0.1
NE
0.7
SE
0.6
SE
2.3
SE
2.2
SE
2.3
SE
2.2
SE
2.2
SE
2.2
SE
2.2
SE
2.1
SE
2
SE
1.8
SE
1.8
SE
Period(s) (?)121212121111141413101213131010101011111111111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)000000149179142061631110986108210481069110911931064884763738
Wind
(km/h)
25
S
25
S
25
S
20
S
20
S
20
S
20
S
20
S
25
S
25
S
20
S
20
S
15
S
20
S
15
SSE
15
S
20
S
20
S
15
S
10
SSE
10
SSE
10
S
10
S
15
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
cross-
on
cross-
on
crosscrosscross-
on
crosscrosscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross
High Tide
/ height (m)
10:17AM
1.39
10:28PM
1.84
11:15AM
1.30
11:23PM
1.79
12:20PM
1.23
12:24AM
1.73
Low Tide
/ height (m)
3:58PM
0.42
5:14AM
0.28
4:49PM
0.51
6:17AM
0.34
5:48PM
0.61
7:26AM
0.39
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Sunrise------6:18-------6:18-------6:18-
Sunset-5:25-------5:23-------5:22------
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
Rain (mm)
------------------------
Temp. °C192019191818181919191918181818192019191919181919
Feels °C (?)141514151414141515151515151515161616161717161717
  • 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

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 Flat Rock 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.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest