United States · 1991–2020 normal

Diamond Head / Kapahulu / Saint Louis Heights in
August.

Typical August weather in Diamond Head / Kapahulu / Saint Louis Heights: 31.2°C by day, 23.6°C at night, 19 mm of rain over 4.2 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high31.2°C
Typical low23.6°C
Rain19 mm
Wet days4.2

In the year-round weather comparison, August scores 60 out of 100 (February leads the year at 79). Daylight is calculated as 12 h 52 from latitude 21.28°. Open-water sea temperature is 26.5°C (13 km from the place centre).

August at a glance

What is Diamond Head / Kapahulu / Saint Louis Heights like in August?

Plain answers from the measured climate record—not a forecast or a promise about a particular trip.

Is Diamond Head / Kapahulu / Saint Louis Heights hot in August?

Days are typically hot at 31.2°C, while nights average 23.6°C.

Does it rain much?

The measured monthly average is 19 mm across about 4 wet days.

How much daylight is there?

There are about 12 h 52 between sunrise and sunset at mid-month, calculated from the place latitude.

Is August a good time to visit?

August ranks 11 of 12 in our weather comparison; February ranks first.

Event window

Warm sea in August

The nearest open-water NOAA OISST 1991–2020 cell averages 26.5°C in August. 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 5848322
NOAA station
USC00519397 · WAIKIKI 717.2
Station distance
0.8 km from the place centre
Coverage
Strong coverage · 28 usable years
Important limit
Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

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The weather comparison for Diamond Head / Kapahulu / Saint Louis Heights 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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