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Surf Forecasts:
Bang Niang Rivermouth surfForecast / Andaman Sea / Thailand
48hr Weather and Surf, issued 12 pm Monday 18 May 2026 +07Forecast update in hr min s Forecast update imminent
Bang Niang Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bang Niang Rivermouth sea temperature is
31.0° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Bang Niang Rivermouth today?
The current surf forecast for Bang Niang Rivermouth at 5PM is: 1.2m 9s primary swell from a West direction and 0.3m 14s secondary swell from a Southwest direction, 0.2m 5s secondary swell from a North-northwest direction (forecast issued at 12:00pm May 18). The wind direction is predicted to be cross-onshore.
| Time (+07) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 4ft (1.2m) | 9s |
| Afternoon (18 May) | 4ft (1.2m) | 9s |
| Evening (18 May) | 4ft (1.2m) | 6s |
Table - waves today at Bang Niang Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 101mm), heaviest during Wed afternoon. Warm (max 29°C on Mon morning, min 26°C on Wed afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 9 | W 9 | W 9 | WSW 9 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | |
235 | 230 | 225 | 61 | 89 | 130 | 173 | 200 | 182 | 187 | 263 | 309 | 374 | 418 | 388 | 339 | 294 | 286 | 247 | 240 | 240 | 243 | 250 | 250 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | |
High Tide | 10:57AM2.71m | 11:24PM2.25m | 11:41AM2.63m | 00:11AM2.13m | 12:27PM2.49m | 1:02AM1.98m | ||||||||||||||||||
Low Tide | 5:29PM0.00m | 5:30AM0.16m | 6:15PM0.09m | 6:15AM0.31m | 7:04PM0.23m | |||||||||||||||||||
 |  |  |  | |  | | | | | | | | | | |  | | | | | | | | |
 | 6:07 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — |
 | — | — | 6:38 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | 6:39 |
— | — | 3 | 3 | 3 | 6 | 5 | 5 | 5 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 | 7 | 5 | 4 | 1 | 2 | 4 | |
Temp °C | 29 | 29 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 27 | 26 | 27 |
31 | 30 | 31 | 31 | 29 | 30 | 30 | 30 | 30 | 30 | 28 | 29 | 29 | 29 | 28 | 30 | 31 | 31 | 31 | 30 | 30 | 31 | 30 | 31 | |
Swell 1 Height (m) Direction Period (s) | NNW 5 | NNW 5 | SW 14 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | SW 14 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 |
 kJ | 5 | 5 | 33 | 61 | 59 | 42 | 41 | 33 | 50 | 79 | 109 | 79 | 78 | 97 | 90 | 125 | 125 | 127 | 130 | 132 | 112 | 109 | 149 | 151 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | NNW 5 | SW 14 | SW 14 | SW 19 | SW 19 | WSW 19 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | — | SW 20 | SW 20 | SW 11 | — | — | — | — | — | — | — |
| kJ | 33 | 33 | 2 | 33 | 33 | 59 | 59 | 36 | 16 | 17 | 17 | 17 | 17 | — | 15 | 15 | 5 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 21 | WSW 21 | SW 21 | SW 21 | WSW 20 | SW 14 | SW 14 | — | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 18 | 45 | 18 | 18 | 37 | 33 | 33 | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 5 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 |
| kJ | 235 | 230 | 225 | 58 | 89 | 130 | 173 | 200 | 182 | 187 | 263 | 309 | 374 | 418 | 388 | 339 | 294 | 286 | 247 | 240 | 240 | 243 | 250 | 250 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 79 | 98 | 883 | 686 | 98 | 883 | 883 | 735 | 735 | 883 | 898 | 683 | 683 | 683 | 683 | 79 | 686 | 686 | 735 | 98 | 98 | 98 | 79 | 79 |
Best forecast wave conditions in Andaman Sea | ||||||||||||||||||||||||
Best forecast wave conditions in Thailand | ||||||||||||||||||||||||
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