Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in Waipahu, Hawaii

Flowers spill across the islands. Day 59 of spring. Read this microseason across nine climate regions →

Waipahu, HI
Sunday, May 17 at 2:52 AM
80
°
Light Drizzle
Feels like
83°
Humidity
66%
Wind
9 mph
Sunrise
5:53 AM
Sunset
7:03 PM
Waipahu, HI
Hour by hour · 24h
81°
90%
4p
80°
92%
5p
78°
94%
6p
76°
97%
7p
76°
98%
8p
75°
99%
9p
74°
98%
10p
74°
92%
11p
74°
76%
12a
75°
54%
1a
74°
37%
2a
70°
30%
3a
70°
28%
4a
70°
29%
5a
70°
32%
6a
73°
38%
7a
77°
47%
8a
78°
63%
9a
74°
83%
10a
79°
98%
11a
80°
100%
12p
80°
100%
1p
77°
100%
2p
73°
100%
3p
L 70°H 81°
Waipahu, HI
7-day forecast
  1. Today
    May 16
    Drizzle
    99%
    84°73°
  2. Sunday
    May 17
    Drizzle
    94%
    86°72°
  3. Monday
    May 18
    Light Drizzle
    78%
    83°73°
  4. Tuesday
    May 19
    Light Drizzle
    82%
    85°72°
  5. Wednesday
    May 20
    Light Drizzle
    100%
    85°72°
  6. Thursday
    May 21
    Mostly Clear
    98%
    84°73°
  7. Friday
    May 22
    Partly Cloudy
    95%
    81°72°
Waipahu, HI
Anemometer · 24h winds · from true
NESW
From · True
ENE
067° · backing 9°
Direction
ENE
067°
Sustained
9
mph
Gust
20
mph
Peak 24h
22
avg 7
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 22 @ 6:00p
−24h−18h−12h−6hnow
Light breeze backing 9° from the ene.
Waipahu, HI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1012.8
-3.6 mb in 3h · falling · 29.91 inHg
Now
1012.8
mb
3h
-3.6
mb
12h
-0.6
mb
24h
+0.8
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10121016
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Waipahu, HI
Air quality
33
AQI
Good
PM 2.5
5.5 μg/m³
PM 10
8.7 μg/m³
NO₂
1.3 μg/m³
Ozone
62.0 μg/m³
UV Index
3.1 Moderate
Waipahu, HI
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
3:30 PM
Sunrise
5:53 AM
Daylight
13h 10m
Sunset
7:03 PM
Civil dusk
5:28 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Waipahu, HI
The moon
New Moon
0% illuminated
Moonrise
4:28 PM
Moonset
5:31 AM
In sign
♊︎ Gemini
Waipahu, HI
Microseason · 28 of 72
May 16–20

Flowers spill across the islands

bird
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Waipahu at a glance

  • Today vs. normal: 10°F below the seasonal normal for this latitude
  • Last frost: December 25 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

ZIP codes in Waipahu

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.