Is I Liyang hot in September?
Days are typically warm at 28.9°C, while nights average 23.7°C.
Northern Mariana Islands · 1991–2020 normal
I Liyang in
September.
Typical September weather in I Liyang: 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 15.19°. Open-water sea temperature is 29.5°C (12 km from the place centre).
September at a glance
What is I Liyang 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 13645576
- NOAA station
- CQC00914080 · CAPITOL HILL 1
- Station distance
- 4.6 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 I Liyang 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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