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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Thursday 28 May 2026 JSTForecast update in hr min s Forecast update imminent
Amatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Amatu sea temperature is
21.7° C
(Which is normal for this time of year)How big are the waves at Amatu today (28 May):
- Afternoon surf: Afternoon surf (28 May, local time) - 4.5ft (1.4m), 8s period with SE swell.
- Evening surf: Evening surf (28 May, local time) - 4ft (1.2m), 8s period with ESE swell.
The current surf forecast for Amatu at 7PM is: 1.6m 8s primary swell from a Southeast direction and 0.4m 10s secondary swell from a East-northeast direction, 1.2m 6s secondary swell from a South-southwest direction (forecast issued at 02:00pm May 28). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 May) | - | - |
| Afternoon (28 May) | 4.5ft (1.4m) | 8s |
| Evening (28 May) | 4ft (1.2m) | 8s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 24°C on Fri morning, min 20°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 28 | Friday 29 | Saturday 30 | Sun 31 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 8 | SE 8 | SE 8 | ESE 8 | E 10 | SSW 7 | SSW 7 | SW 7 | SW 7 | E 9 | E 9 | ESE 9 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 10 | E 10 | E 10 | E 10 | ESE 10 | ESE 10 | |
217 | 281 | 367 | 217 | 262 | 324 | 362 | 405 | 375 | 249 | 288 | 144 | 150 | 187 | 191 | 191 | 191 | 187 | 174 | 171 | 167 | 164 | 170 | 176 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | glassy | cross | cross-on | cross-on | cross | cross-off | cross | cross | on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | |
High Tide | 3:39PM1.20m | 2:25AM1.33m | 4:25PM1.25m | 2:55AM1.34m | 5:06PM1.28m | 3:25AM1.35m | ||||||||||||||||||
Low Tide | 8:46PM0.79m | 9:27AM0.17m | 9:29PM0.82m | 10:00AM0.09m | 10:09PM0.85m | |||||||||||||||||||
 | | |  | |  |  | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — |
 | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | 6:46 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 24 | 24 | 21 | 21 | 21 | 21 | 20 | 20 | 23 | 24 | 24 | 22 | 21 | 21 | 20 | 21 | 23 |
24 | 24 | 24 | 23 | 22 | 21 | 23 | 27 | 27 | 20 | 20 | 19 | 18 | 17 | 19 | 23 | 23 | 23 | 23 | 22 | 21 | 20 | 21 | 22 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | SE 8 | SE 8 | ESE 8 | E 10 | ESE 10 | E 10 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | ESE 9 | ESE 10 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 10 | E 10 | E 10 | E 10 | ESE 10 | ESE 10 |
 kJ | 217 | 281 | 367 | 217 | 262 | 235 | 184 | 256 | 197 | 163 | 135 | 144 | 150 | 187 | 191 | 191 | 191 | 187 | 174 | 171 | 167 | 164 | 170 | 176 |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | S 16 | ENE 11 | NE 12 | E 9 | E 9 | NE 12 | NE 12 | SW 7 | SW 7 | SW 7 | E 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SSE 6 | SSE 6 | S 6 | ESE 5 | E 5 |
| kJ | 42 | 42 | 42 | 40 | 5 | 48 | 22 | 180 | 180 | 35 | 34 | 64 | 33 | 18 | 22 | 32 | 33 | 47 | 46 | 31 | 23 | 20 | 10 | 5 |
Swell 3 Height (m) Direction Period (s) | ESE 13 | ESE 13 | SE 6 | — | S 16 | S 16 | S 15 | NE 11 | NE 12 | S 14 | S 14 | S 7 | S 7 | S 6 | SW 7 | ESE 5 | SW 7 | SW 7 | SW 7 | ESE 6 | E 6 | E 6 | S 6 | SSE 12 |
| kJ | 16 | 16 | 18 | — | 5 | 5 | 4 | 33 | 35 | 4 | 4 | 32 | 24 | 12 | 17 | 9 | 7 | 7 | 8 | 17 | 15 | 15 | 12 | 14 |
Wind waves Height (m) Direction Period (s) | — | S 4 | SSW 6 | S 6 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SW 7 | E 9 | E 9 | ESE 5 | E 5 | ENE 5 | NE 5 | NE 4 | E 4 | E 4 | — | — | — | — | — | — |
| kJ | — | 33 | 77 | 130 | 220 | 324 | 362 | 405 | 375 | 249 | 288 | 81 | 94 | 112 | 37 | 13 | 10 | 14 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 24 | 24 | 184 | 75 | 30 | 6 | 6 | 0 | 87 | 184 | 55 | 538 | 35 | 16 | 30 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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