Is Garapan hot in September?
Days are typically warm at 28.9°C, while nights average 23.7°C.
Northern Mariana Islands · 1991–2020 normal
Garapan in
September.
Typical September weather in Garapan: 28.9°C by day, 23.7°C at night, 312 mm of rain over 20.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high28.9°C
Typical low23.7°C
Rain312 mm
Wet days20.3
In the year-round weather comparison, September scores 14 out of 100 (March leads the year at 61). Daylight is calculated as 12 h 12 from latitude 15.21°. Open-water sea temperature is 29.5°C (14 km from the place centre).
September at a glance
What is Garapan 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 312 mm across about 20 wet days.
How much daylight is there?
There are about 12 h 12 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 10 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 29.5°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 13527050
- NOAA station
- CQC00914080 · CAPITOL HILL 1
- Station distance
- 3.5 km from the place centre
- Coverage
- Good coverage · 24 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 Garapan 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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