Is Joint Base Pearl Harbor Hickam hot in September?
Days are typically hot at 31.3°C, while nights average 23.8°C.
United States · 1991–2020 normal
Joint Base Pearl Harbor Hickam in
September.
Typical September weather in Joint Base Pearl Harbor Hickam: 31.3°C by day, 23.8°C at night, 21 mm of rain over 3.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high31.3°C
Typical low23.8°C
Rain21 mm
Wet days3.5
In the year-round weather comparison, September scores 60 out of 100 (January leads the year at 79). Daylight is calculated as 12 h 14 from latitude 21.35°. Open-water sea temperature is 26.8°C (8 km from the place centre).
September at a glance
What is Joint Base Pearl Harbor Hickam 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 21 mm across about 4 wet days.
How much daylight is there?
There are about 12 h 14 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; January ranks first.
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 26.8°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 10173805
- NOAA station
- USW00022521 · HONOLULU INTL AP
- Station distance
- 2.9 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 Joint Base Pearl Harbor Hickam 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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