Is Tamuning-Tumon-Harmon Village hot in September?
Days are typically hot at 30.6°C, while nights average 24.6°C.
Guam · 1991–2020 normal
Tamuning-Tumon-Harmon Village in
September.
Typical September weather in Tamuning-Tumon-Harmon Village: 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-Tumon-Harmon Village 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 4038659
- 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-Tumon-Harmon Village 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.
How travel partnerships will work