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Surf Forecasts:
Mangandas surfForecast / Guam / Guam
48hr Weather and Surf, issued 3 pm Tuesday 16 Dec 2025 ChSTForecast update in hr min s Forecast update imminent
Mangandas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mangandas sea temperature is
28.8° C
(Which is slightly warmer than usual)How big are the waves at Mangandas today?
The current surf forecast for Mangandas at 8PM is: 0.6m 11s primary swell from a North direction and 0.2m 12s secondary swell from a North-northeast direction (forecast issued at 03:00pm December 16). An open ocean swell of 1.5m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 2.5ft (0.7m) | 10s |
| Evening (16 Dec) | 1.5ft (0.5m) | 11s |
Table - waves today at Mangandas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 10 | 11 | 11 | 11 | 10 | 6 | 11 | 11 | 10 | 10 | 10 | 9 | 10 | 9 | 10 | 8 | 12 | 8 | 11 | 11 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 108 | 80 | 85 | 57 | 60 | 51 | 203 | 76 | 176 | 265 | 339 | 186 | 212 | 159 | 134 | 103 | 94 | 139 | 192 | 116 | 185 | 156 | 146 | 92 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:28PM 0.61 | 7:16AM 0.55 | 4:58PM 0.60 | 7:56AM 0.58 | 5:30PM 0.59 | 8:32AM 0.60 | ||||||||||||||||||
Low Tide / height (m) | 11:03AM 0.38 | 11:58PM -0.08 | 11:58AM 0.41 | 12:31AM -0.13 | 12:47PM 0.42 | 1:04AM -0.17 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - |
| Sunset | - | 5:55 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - |
 | |  |  | | |  |  | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | 2 | - | - | - | - |
| Temp. °C | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 |
| Feels °C (?) | 27 | 28 | 28 | 26 | 26 | 26 | 26 | 26 | 28 | 28 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 29 | 29 | 27 | 28 | 27 | 28 | 29 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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