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

Honolulu, Hawaii Weather

August opens — storms become routine. Day 43 of summer. Read this microseason across nine climate regions →

Honolulu weather forecast — hour by hour, 7-day outlook, NOAA radar

Honolulu, HI
Sunday, August 2 at 3:45 AM
73
°
Mostly Clear
Feels like
77°
Humidity
91%
Wind
10 mph
Sunrise
8:05 PM
Sunset
9:09 AM
Honolulu, HI
Hour by hour · 24h
24-Hour ForecastHonolulu, HI: 24-hour forecast. Temperatures range from 73 to 84 degrees Fahrenheit with a 98% chance of precipitation at 5 PM.
L 73°H 84°
Honolulu, HI
7-day forecast
  1. Today
    Aug 2
    Light Drizzle
    98%
    0.06″
    84°73°—
  2. Monday
    Aug 3
    Light Drizzle
    87%
    0.09″
    85°72°+1°
  3. Tuesday
    Aug 4
    Light Drizzle
    98%
    0.07″
    84°72°-1°
  4. Wednesday
    Aug 5
    Light Drizzle
    49%
    0.01″
    86°72°+2°
  5. Thursday
    Aug 6
    Overcast
    47%
    —
    87°73°+1°
  6. Friday
    Aug 7
    Light Drizzle
    77%
    0.11″
    84°74°-3°
  7. Saturday
    Aug 8
    Light Drizzle
    75%
    0.05″
    84°76°0°
Honolulu, HI
Next 24 hours · Mild now
70°79°88°6a12p6p12anow 73°high 84°low 73°PRECIP %
Honolulu, HI
Anemometer · 24h winds · from true
NESW
From · True
NE
052° · backing 5°
Direction
NE
052°
Sustained
10
mph
Gust
22
mph
Peak 24h
43
avg 14 mph
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 14 mph · pk 43 mph @ 1:00p
010203040MPHB1B2B3B4B5B6B7B8-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 379SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 5° from the ne.
Honolulu, HI
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1008.7
-0.9 mb in 3h · falling · 29.79 inHg
Now
1008.7
mb
3h
-0.9
mb
12h
+1.0
mb
24h
+1.1
mb
Regime · RAIN
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 1008–1010
1000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR-21h-18h-15h-12h-9h-6h-3h-24hNOW1009.71007.61008.8
Pressure giving way — clouds thicken and rain edges closer.
Honolulu, HI
Air quality
47
AQI
Good
→-2 in 6h

AQI 47 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.0 µg/m³, PM10 to 15.4 µg/m³.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5DRIVERGood
9.0μg/m³
PM 10Good
15μg/m³
NO₂Good
1μg/m³
OzoneGood
47μg/m³
UV IndexLow
0.0

What's driving it

PM × Wind × Precip

PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.0 µg/m³, PM10 to 15.4 µg/m³.

PM2.5/PM10
0.58
Wind
breezy
Recent rain
3h in last 6h
Pattern
washed out

Trends

Seven days of AQI and PM2.5.

Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).

7-DAY AQI TREND50100SUNMONTUEWEDTHUFRISATSUN7-DAY PM2.5 TREND · μg/m³300
Honolulu, HI
Sky cover · visibility · 24h
Cloud cover
26%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
32.0mi
UNLIMITED
87 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
13:45 UTC · Honolulu, HI · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
13:45 UTC · Honolulu, HI · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Honolulu, HI
Satellite · infrared · animated
Honolulu, HI
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Honolulu, HI
Almanac · Sunday, August 2
Red sky at night, sailor's delight.
Civil dawn
5:42 AM
Sunrise
8:05 PM
Daylight
13h 04m
Sunset
9:09 AM
Civil dusk
7:34 PM
Planting note
Sow fall peas. Start kale and collard seedlings for fall.
Honolulu, HI
The moon
Waning Gibbous
85% illuminated
Moonrise
9:17 PM
Moonset
9:44 AM
In sign
♓︎ Pisces
Honolulu, HI
Microseason
Aug 1–5

August opens — storms become routine

plant
Jan 159% of the yearDec 31

Read this microseason across nine climate regions →

Honolulu at a glance

  • Today vs. normal: 8°F below the seasonal normal for this latitude
  • Last frost: December 25 (climatological average for this latitude)
  • Microseason: Aug 1–5
  • Planting window: Sow fall peas. Start kale and collard seedlings for fall.

ZIP codes: 96813, 96814, 96815, 96816, 96817, 96818, 96819, 96820 +6 more

15-Day Forecast — Honolulu

  1. Sun84°73°98%
  2. Mon85°72°87%
  3. Tue84°72°98%
  4. Wed86°72°49%
  5. Thu87°73°47%
  6. Fri84°74°77%
  7. Sat84°76°75%
  8. Sun85°76°75%
  9. Mon85°74°75%
  10. Tue85°74°58%
  11. Wed86°75°66%
  12. Thu86°76°80%
  13. Fri83°76°85%
  14. Sat83°76°89%
  15. Sun83°76°73%

Forecast data from Open-Meteo (CC BY 4.0).

Live wind & temperature near Honolulu

Right now in the garden

Peak growing season

As of August 2, 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.

Sun & seasons in Honolulu

Honolulu sits in Honolulu County, where the year’s longest day runs 13h 26m of daylight and its shortest just 10h 50m — a swing of +2h 36m between the June and December solstices.

Kailua, the state’s largest city, lies about 8 miles to the ENE. The nearest town Honolulu tracks is Kailua, roughly 8 miles to the ENE.

Air quality in Honolulu’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 28). See the full air-quality history for Honolulu.

January 1–5: The year turns in trade winds.January 6–10: Reefs reflect clear winter light.January 11–15: Mangrove buds swell with green.January 16–20: Hibiscus opens in January sun.January 21–25: Early-blooming aster brings gold.January 26–31: Last cold breath, green rising.February 1–5: Plumeria and ceiba crown the canopy.February 6–10: Coral spawn timing aligns with moon.February 11–15: Morning dew lingers on new leaves.February 16–20: Trade-wind rhythm softens slightly.February 21–25: Humidity breaks the dry season spell.February 26–28: Mist rises where rain falls inland.March 1–5: Green thickens in every direction.March 6–10: Hidden creatures awaken in dampness.March 11–15: Fruiting cycles deepen as rains persist.March 16–20: Wings emerge from green.March 21–25: Light holds the horizon.March 26–31: Coral blooms begin.April 1–5: Thunder rolls across the sea.April 6–10: Migrants pour southward.April 11–15: Green deepens in all things.April 16–20: Rain paints the sky.April 21–25: Green shoots rise from the shore.April 26–30: Heat breaks the last restraint.May 1–5: Lei Day—flowers crown the islands.May 6–10: Rain falls on greening grain.May 11–15: Green life breaks upward.May 16–20: Flowers spill across the islands.May 21–25: Summer arrives in thunder.May 26–31: Frogs sing the summer in.June 1–5: First trades stir the ceiba canopy.June 6–10: Afternoon showers claim the ritual.June 11–15: Easterly waves thread the Atlantic.June 16–20: Reef polyps synchronize in moonlight.June 21–25: The sun reaches its zenith turn.June 26–30: Lightning bugs dance above the flooded lowlands.July 1–5: Midyear heat — the wet season grip.July 6–10: Warm breeze across the mangrove maze.July 11–15: Storm surge begins its rhythm.July 16–20: Juvenile raptors test the thermals.July 21–25: The earth releases its breath — humidity peaks.July 26–31: Fruits swell in the tropical canopy.August 1–5: August opens — storms become routine.August 6–10: Autumn whispers in the trade wind shift.August 11–15: Cool winds find their path again.August 16–20: Cicadas hum through the heat.August 21–25: Trade winds gather strength.August 26–31: Hurricane season intensifies.September 1–5: Peak storm season dawns.September 6–10: Wet-season rains peak.September 11–15: Mid-season storm lull.September 16–20: Equinox approaches.September 21–25: Storm intensity ebbs slightly.September 26–30: Late-season storms persist.October 1–5: Easterly waves train across the basin.October 6–10: Hurricane season's second peak.October 11–15: Seasonal wind shift emerges.October 16–20: Atlantic storms retreat.October 21–25: Trade winds solidify.October 26–31: Dry season's arrival.November 1–5: Last storms clear the horizon.November 6–10: Dry season takes hold.November 11–15: Migratory arrivals from the north.November 16–20: The emerald deepens.November 21–25: Dust veil settles.November 26–30: Harvest calm descends.December 1–5: Deep dry season opens.December 6–10: Winter trades blow strong.December 11–15: Solstice approaches in green silence.December 16–20: The sun turns again.December 21–25: Solstice—renewal in stillness.December 26–31: Year's end in tropical stillness.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · August 1–5

August opens — storms become routine

Great rains fall without warning. Flash floods recede in hours. Mangrove prop roots strain. Corals bleach if water temp exceeds 30.5°C. Named storm threat real.

Day 214 of 365 · Wedge 43 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
Februarylettuce, peas, spinach, radishes—
Marchlettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash—
Apriltomatoes, peppers, beans, squash—
Maytomatoes, peppers, beans, squashlettuce, peas, radishes
June—lettuce, peas, radishes
July—tomatoes, beans, summer squash
August—tomatoes, beans, summer squash
September—tomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
Novemberfall brassicas, garlic (overwinter), carrots—
December——

A year in weather

The year in Honolulu tops out in September (~75°F) and dips lowest in February (~70°F), with July wettest at 15.3 inches and February driest at 9.1 inches.

MonthMean tempPrecipRainy days
January70°10.6″12
February70°9.1″12
March70°13.7″15
April71°12.9″18
May72°9.3″16
June73°12.9″21
July74°15.3″23
August75°12.7″20
September75°12.2″19
October75°12.9″19
November73°15.1″18
December71°14.2″18

Regional context

In Honolulu, NOAA NCEI 1991-2020 normals put January near 70°F and July near 74°F — a 5°F seasonal arc — with about 151 inches of precipitation over 210 rainy or snowy days.

Honolulu's precipitation spreads evenly: July peaks at 15.3 inches on 22.5 wet days, while February holds 9.1 inches over 11.8 — no month dominates Honolulu's rain calendar. It is a balanced pattern Honolulu shares with places like Maunawili, HI, Halawa, HI and Aiea, HI.

With a coldest-month mean of 70°F, Honolulu stays mostly frost-free and grows year-round. The September peak near 75°F is Honolulu's real limit, pushing cool-season vegetables to spring and fall. Within Honolulu, low or inland lots lose 3-5°F overnight versus Honolulu's coastal ground.

Similar climates: Maunawili, HI, Halawa, HI, Aiea, HI, Kaneohe, HI, Heeia, HI.

Naturalist notes

Golden plovers complete their remarkable journey from Alaska in late April, appearing along Honolulu's shorelines and parks.

Plumeria trees reach peak bloom during May, filling the warm air with their distinctive fragrance.

Frequently asked

When does it freeze in Honolulu?
In Honolulu, expect the last spring frost near mid-February; Honolulu's first autumn frost comes around mid-December.
What is the rainy season in Honolulu?
July is the wettest month in Honolulu, about 15.3 inches on average; the year totals roughly 151 inches.
What is the warmest month in Honolulu?
Honolulu peaks in September, when the mean runs near 75°F.
What is the coldest month in Honolulu?
February is Honolulu's coldest month, averaging about 70°F.
When can I start a vegetable garden in Honolulu?
In Honolulu, sow peas and hardy greens around mid-February; Honolulu's tomatoes and peppers wait two weeks more.
How many rainy days does Honolulu get?
Honolulu averages about 210 days with measurable rain or snow each year.
What hardiness zone is Honolulu?
Because Honolulu bottoms near 70°F in February, that winter low sets Honolulu's USDA zone — verify by ZIP.
What is the 10-day forecast for Honolulu?
Honolulu's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Honolulu?
See this week's day-by-day rain chances for Honolulu in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Honolulu?
Current conditions for Honolulu and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Honolulu forecast updated?
The Honolulu forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Honolulu?
Today's sunrise and sunset times for Honolulu are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Honolulu?
The next few days in Honolulu's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

The varied climate of Honolulu, Hawaii carries typical Januarys near 70°F and Julys around 74°F — 4°F of seasonal travel.

Honolulu sees close to 151 inches of precipitation annually, falling across some 210 wet days.

Honolulu sits at 21.3°N; that 4°F seasonal swing frames planting windows and frost dates across Honolulu.

All cities in Hawaii →

ZIP codes in Honolulu

  • 96859
  • 96858
  • 96850
  • 96819
  • 96820
  • 96822
  • 96826
  • 96813
  • 96815
  • 96814
  • 96817
  • 96816
  • 96818
  • 96848
  • 96801
  • 96802
  • 96803
  • 96804
  • 96805
  • 96806
  • 96807
  • 96808
  • 96809
  • 96810
  • 96811
  • 96812
  • 96823
  • 96828
  • 96830
  • 96836
  • 96837
  • 96838
  • 96839
  • 96840
  • 96841
  • 96843
  • 96844
  • 96846
  • 96847
  • 96849
  • 96898

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.