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Tiyan, GU Local Forecast Office

Agana GU

Marine Point Forecast

[NOTICE]

    • This Afternoon

      This Afternoon:Variable winds 5 kt or less. Scattered showers and thunderstorms. Waves 1 ft or less.

      High: 88 °F

      Light Wind
      < 1ft

    • Tonight

      Tonight:Variable winds 5 kt or less. Scattered showers and thunderstorms. Waves 1 ft or less.

      Low: 85 °F

      Light Wind
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 5 to 8 kt in the morning. Scattered showers and thunderstorms. Waves 1 ft or less.

      High: 88 °F

      ⇑ESE 8kt
      < 1ft

    • Monday Night

      Monday Night:SSE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers and thunderstorms. Waves 1 ft or less.

      Low: 85 °F

      SSE 6kt⇓
      < 1ft

    • Tuesday

      Tuesday:Variable winds less than 5 kt becoming SSE 5 to 10 kt in the morning. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

      High: 86 °F

      ⇑SSE 10kt
      < 1ft

    • Tuesday Night

      Tuesday Night:S wind around 8 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.

      Low: 85 °F

      S 8kt
      < 1ft

    • Wednesday

      Wednesday:S wind 8 to 12 kt. Scattered showers and thunderstorms. Waves 1 ft or less.

      High: 86 °F

      S 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers. Waves 1 ft or less.

      Low: 84 °F

      SSW 8kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SW 5 to 9 kt in the morning. A chance of showers. Waves 1 ft or less.

      High: 86 °F

      ⇑SW 9kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:28 pm ChST Sep 20, 2026
Forecast Valid: 2pm ChST Sep 20, 2026-6pm ChST Sep 26, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
Variable winds 5 kt or less. Scattered showers and thunderstorms. Waves 1 ft or less.
Tonight
Variable winds 5 kt or less. Scattered showers and thunderstorms. Waves 1 ft or less.
Monday
Variable winds less than 5 kt becoming ESE 5 to 8 kt in the morning. Scattered showers and thunderstorms. Waves 1 ft or less.
Monday Night
SSE wind around 6 kt becoming variable and less than 5 kt after midnight. Scattered showers and thunderstorms. Waves 1 ft or less.
Tuesday
Variable winds less than 5 kt becoming SSE 5 to 10 kt in the morning. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.
Tuesday Night
S wind around 8 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Waves 1 ft or less.
Wednesday
S wind 8 to 12 kt. Scattered showers and thunderstorms. Waves 1 ft or less.
Wednesday Night
SSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers. Waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SW 5 to 9 kt in the morning. A chance of showers. Waves 1 ft or less.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 13.49°N 144.76°E
Last Update: 2:28 pm ChST Sep 20, 2026
Forecast Valid: 2pm ChST Sep 20, 2026-6pm ChST Sep 26, 2026
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