Surf Forecasts:
How big are the waves at Mangandas today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 3.5ft (1.0m), 8s period with NNE swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 3.5ft (1.0m), 8s period with WSW swell.
- Evening surf: Evening surf (17 Sep, local time) - 3ft (0.9m), 8s period with NNE swell.
The current surf forecast for Mangandas at 11AM is: 1.0m 8s primary swell from a North-northeast direction and 0.9m 8s secondary swell from a West-southwest direction (forecast issued at 03:00am September 17). The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 3.5ft (1.0m) | 8s |
| Afternoon (17 Sep) | 3.5ft (1.0m) | 8s |
| Evening (17 Sep) | 3ft (0.9m) | 8s |
Table - waves today at Mangandas. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Fri afternoon. Warm (max 29°C on Thu morning, min 28°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the WSW by Sat night). | ||||||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||||||||||
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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | NE 9 | NE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | SW 8 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 178 | 162 | 143 | 140 | 140 | 119 | 103 | 103 | 363 | 427 | 354 | 319 | 338 | 330 | 330 | 330 | 330 | 338 | 338 | 330 | 297 | 266 | 260 | 260 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross |
High Tide | 10:05PM0.64m | 12:49PM0.60m | 10:31PM0.61m | 2:20PM0.59m | 11:05PM0.58m | 3:49PM0.59m | ||||||||||||||||||
Low Tide | 5:30AM0.07m | 5:51PM0.48m | 6:21AM0.08m | 7:01PM0.51m | 7:22AM0.09m | 8:32PM0.52m | ||||||||||||||||||
 | |  |  |  | |  | | | | | | | | |  | | | | | | | | | |
 | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:21 | — | — | — | — | — | — | — | 6:20 | — | — |
mm | 5 | 1 | — | 1 | — | — | — | — | 1 | 1 | — | — | 1 | 1 | 2 | — | — | — | — | 1 | 1 | 1 | 1 | — |
Temp °C | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 31 | 29 | 31 | 31 | 30 | 30 | 30 | 28 | 29 | 28 | 31 | 31 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | NE 9 | NE 8 | NNE 8 | NNE 8 | NNE 8 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 |
| kJ | 178 | 162 | 143 | 140 | 140 | 143 | 219 | 271 | 363 | 427 | 354 | 319 | 338 | 330 | 330 | 330 | 330 | 338 | 338 | 330 | 297 | 266 | 260 | 260 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | WSW 8 | WSW 8 | S 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 9 | N 8 | N 8 | N 8 | N 9 | N 9 | N 9 | N 9 |
| kJ | 98 | 98 | 117 | 117 | 44 | 103 | 103 | 103 | 99 | 101 | 101 | 103 | 98 | 94 | 77 | 73 | 80 | 71 | 68 | 90 | 104 | 129 | 99 | 97 |
Swell 3 Height (m) Direction Period (s) | ENE 13 | S 7 | S 7 | S 7 | NE 12 | NE 12 | WSW 8 | WSW 8 | WSW 10 | ENE 12 | SSE 7 | SSE 7 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | 66 | 44 | 43 | 43 | 38 | 37 | 40 | 39 | 31 | 14 | 10 | 16 | 14 | 21 | 20 | 19 | 35 | 34 | 34 | 24 | 33 | 33 | 32 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 8 | WSW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 117 | 119 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 18 | 21 | 21 | 1830 | 2050 | 18 | 21 | 21 | 21 | 21 | 21 | 238 | 238 | 238 | 238 | 238 | 1277 | 21 | 21 | 238 | 238 | 238 | 18 | 18 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||||
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