Is Tamuning hot in September?
Days are typically hot at 30.6°C, while nights average 24.6°C.
Guam · 1991–2020 normal
Tamuning in
September.
Typical September weather in Tamuning: 30.6°C by day, 24.6°C at night, 383 mm of rain over 22.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high30.6°C
Typical low24.6°C
Rain383 mm
Wet days22.2
In the year-round weather comparison, September scores 5 out of 100 (March leads the year at 49). Daylight is calculated as 12 h 11 from latitude 13.49°. Open-water sea temperature is 29.4°C (16 km from the place centre).
September at a glance
What is Tamuning like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 383 mm across about 22 wet days.
How much daylight is there?
There are about 12 h 11 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 11 of 12 in our weather comparison; March ranks first.
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 29.4°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 7874631
- NOAA station
- GQW00041406 · GUAM INTERNATIONAL AIRPORT
- Station distance
- 6.4 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Tamuning is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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