As of 19:58 HST

Waipahu, HI weather in May

79°

Waipahu, Saturday, 8 August, 19:58

Mostly clear. Feels like 79°. High 84°, low 77°.

Pressure30.00 inHg

Wind4 mph NE

Humidity75%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In May, Waipahu, HI averages a high of 80.6° and a low of 72.5°. About 1.3 inches of precipitation fall over the month (9 wet days). The record high is 87.3° (2025) and the record low 64.8° (2018). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	79.5°	71.4°	28%	85.6° (2025)	64.8° (2018)
2	79.7°	72°	28%	85.3° (2017)	67.3° (1989)
3	79.9°	72°	35%	85.3° (2025)	68.2° (1989)
4	79.9°	72°	30%	86.4° (2025)	69.1° (1982)
5	79.9°	72°	30%	85.6° (2025)	67.8° (2019)
6	79.7°	72°	32%	85.3° (2020)	66.6° (2019)
7	79.7°	72°	40%	84.9° (2025)	67.3° (2019)
8	79.9°	72.1°	32%	84.7° (2025)	66.9° (1987)
9	80.1°	72°	25%	85.5° (2025)	66.4° (1987)
10	80.2°	72°	28%	86.2° (2025)	67.1° (2024)
11	80.1°	72.1°	33%	84.7° (2022)	66.9° (2024)
12	80.4°	72.3°	32%	85.5° (2020)	67.5° (2024)
13	80.4°	72.3°	40%	85.5° (2025)	68° (2023)
14	80.4°	72.3°	45%	85.3° (2022)	67.6° (1973)
15	80.6°	72.3°	35%	84.6° (2020)	69.1° (2006)
16	80.2°	72.5°	28%	86.2° (2019)	68.2° (2006)
17	80.4°	72.5°	45%	86.9° (2025)	69.1° (2006)
18	80.6°	72.7°	30%	86.4° (2019)	68.5° (1985)
19	80.6°	72.5°	35%	85.6° (2020)	69.1° (1985)
20	80.8°	72.7°	32%	84.9° (2025)	68.5° (1985)
21	81°	72.7°	23%	86.9° (2019)	67.8° (1997)
22	81.3°	73°	22%	84.9° (1996)	70° (2009)
23	81.3°	73.2°	27%	85.1° (2025)	70.7° (1987)
24	81.1°	73.2°	30%	85.8° (2019)	69.8° (1975)
25	81°	73°	27%	86.4° (2019)	70.5° (2015)
26	81.3°	73°	28%	87.3° (2025)	69.4° (1997)
27	81.3°	72.9°	27%	86.4° (2025)	68° (2017)
28	81.3°	73.2°	37%	86.9° (2025)	70° (2023)
29	81.7°	73.2°	27%	86.5° (2019)	69.1° (1975)
30	81.9°	73.4°	13%	86.9° (2019)	70.7° (1975)
31	81.9°	73.6°	25%	87.3° (2025)	70.3° (1982)