As of 18:34 HST

Waipahu, HI weather in December

81°

Waipahu, Saturday, 8 August, 18:34

Mostly clear. Feels like 85°. High 84°, low 77°.

Pressure29.97 inHg

Wind6 mph E

Humidity72%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In December, Waipahu, HI averages a high of 78.3° and a low of 71.7°. About 2.4 inches of precipitation fall over the month (8 wet days). The record high is 86.2° (2025) and the record low 61.3° (2017). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	79.3°	72.5°	32%	83.3° (2022)	67.1° (2025)
2	79.3°	72.3°	23%	83.3° (2022)	66.6° (2023)
3	79.2°	72.3°	23%	83.8° (2022)	65.7° (2025)
4	79°	72.5°	27%	83.1° (2020)	66.4° (2017)
5	79°	72.3°	25%	83.7° (2020)	65.8° (2021)
6	79°	72.3°	25%	86.2° (2025)	61.3° (2017)
7	78.8°	72°	28%	84.2° (2020)	62.1° (2017)
8	78.8°	72°	25%	84.9° (2024)	66° (2017)
9	78.6°	72.3°	17%	83.5° (2024)	66.6° (2023)
10	78.3°	72°	23%	84.6° (2023)	64° (1973)
11	78.6°	72.3°	15%	85.3° (2023)	65.3° (1967)
12	78.6°	72.5°	22%	83.5° (2024)	66.4° (2025)
13	78.4°	72.1°	27%	83.7° (2024)	68.2° (1972)
14	78.3°	72°	20%	83.7° (2020)	66.7° (1972)
15	78.3°	71.8°	23%	83.3° (2024)	67.1° (2016)
16	77.9°	71.6°	22%	82° (2024)	64.8° (2017)
17	77.9°	71.2°	23%	83.1° (2019)	65.8° (1998)
18	77.9°	71.2°	30%	83.7° (2019)	61.9° (1988)
19	77.9°	71.6°	37%	82.6° (2019)	65.8° (2022)
20	77.9°	71.2°	22%	82° (2020)	66.6° (2005)
21	78.1°	71.4°	17%	82.8° (2025)	66.9° (2024)
22	78.3°	71.1°	22%	84.4° (2024)	65.7° (2017)
23	78.1°	71.6°	25%	82.9° (2024)	62.6° (2017)
24	78.6°	71.4°	27%	83.8° (2019)	66.2° (2017)
25	78.1°	71.4°	30%	82.6° (2024)	65.7° (2023)
26	77.7°	71.1°	32%	82.4° (2024)	65.7° (2023)
27	77.9°	71.1°	20%	83.3° (2024)	64° (2023)
28	77.7°	70.7°	28%	83.3° (2019)	63.5° (2023)
29	77.7°	70.5°	17%	83.7° (2019)	64.9° (2022)
30	77.7°	70.9°	18%	83.5° (2024)	65.3° (2017)
31	77.5°	70.9°	28%	83.3° (2024)	64.2° (2023)