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

Weather in Kahului, Hawaii

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

Kahului, HI
Sunday, May 17 at 1:45 AM
84
°
Clear
Feels like
91°
Humidity
60%
Wind
3 mph
Sunrise
5:47 AM
Sunset
6:56 PM
Kahului, HI
Hour by hour · 24h
78°
3p
77°
4p
77°
5p
75°
6p
74°
7p
74°
8p
73°
9p
73°
10p
72°
11p
72°
12a
71°
1a
69°
12%
2a
69°
16%
3a
69°
20%
4a
69°
22%
5a
69°
20%
6a
72°
15%
7a
74°
10%
8a
78°
9a
81°
10a
83°
11a
84°
12p
84°
1p
84°
2p
L 69°H 84°
Kahului, HI
7-day forecast
  1. Today
    May 16
    Light Drizzle
    87°70°
  2. Sunday
    May 17
    Overcast
    85°69°
  3. Monday
    May 18
    Light Drizzle
    83°72°
  4. Tuesday
    May 19
    Mostly Clear
    24%
    84°71°
  5. Wednesday
    May 20
    Light Drizzle
    67%
    84°71°
  6. Thursday
    May 21
    Light Drizzle
    67%
    82°71°
  7. Friday
    May 22
    Light Drizzle
    68%
    81°69°
Kahului, HI
Anemometer · 24h winds · from true
NESW
From · True
SW
224° · veering 28°
Direction
SW
224°
Sustained
3
mph
Gust
15
mph
Peak 24h
19
avg 4
Beaufort · 1 · LIGHT AIR
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 4 · pk 19 @ 12:00p
−24h−18h−12h−6hnow
Light breeze veering 28° from the sw.
Kahului, HI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1012.5
-3.7 mb in 3h · falling · 29.90 inHg
Now
1012.5
mb
3h
-3.7
mb
12h
-1.3
mb
24h
+0.3
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10121017
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Kahului, HI
Air quality
25
AQI
Good
PM 2.5
3.5 μg/m³
PM 10
5.7 μg/m³
NO₂
0.3 μg/m³
Ozone
52.0 μg/m³
UV Index
4.0 Moderate
Kahului, HI
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
3:25 PM
Sunrise
5:47 AM
Daylight
13h 09m
Sunset
6:56 PM
Civil dusk
5:21 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Kahului, HI
The moon
New Moon
0% illuminated
Moonrise
4:23 PM
Moonset
5:23 AM
In sign
♉︎ Taurus
Kahului, 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 →

Kahului at a glance

  • Today vs. normal: 7°F below the seasonal normal for this latitude
  • Last frost: December 22 (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 Kahului

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.