Kahului weather in August

In August, Kahului sees average daytime highs of 84°F and overnight lows near 75°F, with 0.5 in of rain across 2.7 wet days and about 12.7 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 84°F through the month. The sky is clear or mostly clear about 54% of the time in August, and the air most often feels muggy.

Daylight stretches from about 13 hours at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Kahului's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Kahului's year-round climate.

Daytime high
84°
1st warmest
Overnight low
75°
12th coldest
Rainfall
0.5 in
2.7 wet days
Daylight
12 h 42 min
6:08 AM – 6:52 PM
Cloud cover
42%
3rd clearest
Wind
11 mph
3rd windiest
Solar energy
6.51 kWh/m²
Travel score
6.8
out of 10

Kahului is census designated place in Maui County, Hawaii, United States.

Density
632/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← JulyKahului year-round climateSeptember →Best places to visit in August
JanFebMarAprMayJunJulAugSepOctNovDec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 84°F through the month.

A typical August day in Kahului reaches about 84°F in the afternoon and slips back to 75°F overnight — a 9°F spread between the day's warmth and the night's chill. On most days the high lands between 82°F and 86°F. Set against its neighbours, August runs on par with July and on par with September.

70°80°90°151015202531
Avg high (°F)Avg low (°F)
18375
28375
38375
48475
58475
68475
78475
88475
98475
108475
118475
128475
138475
148475
158475
168475
178475
188475
198475
208475
218475
228475
238475
248475
258475
268475
278475
288475
298475
308475
318475

Kahului weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan77° / 69°1.45.610.97.9
Feb77° / 68°1.25.211.37.8
Mar77° / 69°1.86.711.97.5
Apr79° / 70°0.83.912.57.6
May81° / 72°0.53.3137.7
Jun82° / 73°0.21.913.27.6
Jul83° / 74°0.42.713.17.0
Aug84° / 75°0.52.712.76.8
Sep84° / 75°0.42.212.16.8
Oct83° / 74°0.73.211.57.0
Nov80° / 72°1.05117.4
Dec78° / 70°1.65.210.87.7

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 27% of August, with mostly cloudy or overcast conditions the remaining 19%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18020
28020
38020
48020
57921
67921
77921
87921
97921
108020
118020
128020
138119
148119
158119
168218
178119
188119
198119
208218
218218
228218
238218
248218
258119
268119
278218
288119
298119
308119
318119

Chance of precipitation in August

Any precipitation

Kahului gets around 0.5 in of rain over 2.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 9% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
19
29
39
49
59
69
79
89
99
109
119
129
139
149
159
169
179
189
199
209
219
229
238
248
258
268
278
288
297
307
317

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the muggy band about 74% of days. Sticky, muggy-or-worse air turns up on roughly 93% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1875170
2875170
3875170
4874180
5874180
6874180
7874180
8874180
9774190
10774190
11774190
12774190
13774190
14774190
15774190
16774190
17774190
18774190
19775180
20775180
21676180
22675181
23675181
24675181
25675181
26675181
27675181
28675181
29775180
30776170
31776170

Wind in August

Winds average 11 mph in August.

Across August, daily wind ranges from about 10 mph on the calmest days to 11 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2711light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 hours at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over August. Sunrise moves from 6:03 AM to 6:13 AM, and sunset from 7:01 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:037:01
212.96:037:00
312.96:047:00
412.96:046:59
512.96:056:59
612.96:056:58
712.96:056:58
812.96:066:57
912.86:066:56
1012.86:066:56
1112.86:076:55
1212.86:076:54
1312.86:076:54
1412.86:086:53
1512.76:086:52
1612.76:086:52
1712.76:096:51
1812.76:096:50
1912.76:096:49
2012.66:106:49
2112.66:106:48
2212.66:106:47
2312.66:116:46
2412.66:116:45
2512.66:116:44
2612.56:116:44
2712.56:126:43
2812.56:126:42
2912.56:126:41
3012.56:126:40
3112.46:136:39

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.51 kWh/m².

For context, solar energy here swings from a low near 4.12 kWh/m² to a high of 6.81 kWh/m² in June across the year — August's 6.51 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.6Intense
116.6Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
316.4Intense
Planning a trip in August

Hazard calendar for Kahului

In seasonPeak

In August, Kahului sits inside its pacific hurricane season. The full year is below, with each hazard's peak months called out.

Kahului sits in the eastern Pacific hurricane zone; the season peaks August–September.

Pacific hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Kahului?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
11th-best month of the year
8.5
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Kahului for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Kahului in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Kahului sees daytime highs around 84°F and nights near 75°F. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Kahului in August

The nearest coast averages about 80°F in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 80°F and coldest in February near 75°F.

The water stays above 68°F all year — warm enough for a swim any month.

74°76°78°80°82°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan76Warm
Feb75Warm
Mar75Warm
Apr76Warm
May77Warm
Jun78Warm
Jul78Warm
Aug80Warm
Sep80Warm
Oct80Warm
Nov79Warm
Dec77Warm

UV index in Kahului in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kahului peaks around July 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighJul 22UV 12Dec 17UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr13Extreme
May10Extreme
Jun11Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov7High
Dec6High
Location & terrain

Where is Kahului?

Kahului sits at 20.9°N, 156.5°W, 0 ft above sea level, in United States. The nearest listed city is Wailuku, 1.9 mi away.

Topography around Kahului

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Kahului.

Within 2 miles, the terrain around Kahului has only modest variations in elevation — a maximum elevation change of 328 ft around an average of 66 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,751 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,977 ft.

The land around Kahului is covered by artificial surfaces (42%), water (27%) and grassland (22%) within 2 miles, grassland (41%) and water (34%) within 10 miles, and water (82%) within 50 miles.

2 miles
328 ft
10 miles
5,751 ft
50 miles
9,977 ft
treesshrubsgrasslandartificial surfacesbare terrainwater
← JulyKahului year-round climateSeptember →Best places to visit in August
August weather nearby: Wailuku 1.9 mi · Kīhei 8.7 mi · Lahaina 14 mi · Hawai‘i Kai 84 mi · East Honolulu 85 mi · Niu Valley 86 mi · Kuliouou - Kalani Iki 87 mi · Kailua 89 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Kahului (20.8893°, -156.4729°, elevation 0 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).