Honmachi weather in August

In August, Honmachi sees average daytime highs of 31°C and overnight lows near 25°C, with 162 mm of rain across 16.1 wet days and about 13.2 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 28% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 36 min at the start of August to 12 h 42 min by month's end. Set against the rest of the year, August is Honmachi's 8th-clearest and 12th-windiest month. For the whole year in context, see Honmachi's year-round climate.

Daytime high
31°
1st warmest
Overnight low
25°
12th coldest
Rainfall
162 mm
16.1 wet days
Daylight
13 h 12 min
5:46 AM – 6:58 PM
Cloud cover
62%
8th clearest
Wind
8 km/h
12th windiest
Solar energy
4.91 kWh/m²
Travel score
3.9
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Honmachi reaches about 31°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, August runs about 1°C warmer than July and about 3°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103126
113126
123126
133126
143126
153126
163126
173126
183126
193125
203125
213125
223125
233125
243025
253025
263025
273025
283025
293025
303025
313024

How August really feels in Honmachi

Once humidity and wind are folded in, August averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Honmachi weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 739.40.610.12.2
Feb11° / 909.80.210.82.7
Mar15° / 13312.5011.84.1
Apr19° / 13°15111.9012.85.8
May23° / 17°17411.8013.66.4
Jun26° / 21°42818.3014.15.1
Jul29° / 25°34718.3013.94.1
Aug31° / 25°16216.1013.23.9
Sep28° / 22°17513.2012.25.6
Oct23° / 17°1008.2011.27.2
Nov18° / 12°968.8010.35.8
Dec12° / 8390.29.93.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24852
34753
44753
54753
64654
74654
84555
94555
104456
114456
124456
134357
144357
154456
164456
174456
184555
194654
204654
214654
224753
234753
244654
254654
264654
274753
284654
294654
304654
314654

Chance of precipitation in August

Any precipitation

Honmachi gets around 162 mm of rain over 16.1 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 52% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
151
251
351
451
550
650
750
851
951
1051
1151
1251
1351
1452
1552
1652
1753
1853
1953
2053
2153
2253
2353
2453
2553
2654
2754
2854
2954
3054
3153

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1014653
2014653
3014653
4014653
5014653
6014653
7014653
8014653
9014653
10014653
11014653
12014653
13014653
14014653
15124651
16124651
17134650
18134649
19144748
20154747
21164845
22174944
23184942
24195139
252105137
262115235
272125333
282135431
292155528
302165626
312175724

Wind in August

Winds average 8 km/h in August, the calmest month.

Across August, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 36 min at the start of August to 12 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over August. Sunrise moves from 5:35 AM to 5:56 AM, and sunset from 7:12 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:357:12
213.65:367:11
313.65:377:10
413.55:377:10
513.55:387:09
613.55:397:08
713.55:397:07
813.45:407:06
913.45:417:05
1013.45:417:04
1113.45:427:03
1213.35:437:02
1313.35:437:01
1413.35:447:00
1513.25:456:59
1613.25:466:58
1713.25:466:57
1813.15:476:56
1913.15:486:55
2013.15:486:53
2113.15:496:52
2213.05:506:51
2313.05:506:50
2413.05:516:49
2512.95:526:47
2612.95:526:46
2712.95:536:45
2812.85:546:44
2912.85:546:42
3012.85:556:41
3112.75:566:40

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.91 kWh/m².

For context, solar energy here swings from a low near 2.28 kWh/m² to a high of 5.13 kWh/m² in May across the year — August's 4.91 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.1Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.9Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
314.5Bright
Planning a trip in August

Hazard calendar for Honmachi

In seasonPeak

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

Honmachi sits in the Pacific typhoon belt; the season peaks July–October.

Honmachi's rainy season runs June–July, when most of the year's rain falls.

Pacific typhoon
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is August a good time to visit Honmachi?

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

3.9
Sightseeing
9th-best month of the year
5.7
Beach & pool
2nd-best month of the year

August is a weaker month for outdoor sightseeing in Honmachi.

What to pack for Honmachi in August

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

In August, Honmachi sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Honmachi in August

The nearest coast averages about 27°C in August — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 27°C and coldest in February near 14°C.

It's comfortable for a long swim from May 26 to Nov 19 — about 5.9 months when the water holds above 20°C.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan15Cool
Feb14Bracing
Mar15Bracing
Apr17Cool
May19Cool
Jun22Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov20Refreshing
Dec18Cool

UV index in Honmachi in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Honmachi peaks around July 12 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 12UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep10Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Honmachi in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Honmachi is worst in March — around 24 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 13 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2424 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar24Moderate
Apr24Moderate
May22Moderate
Jun18Moderate
Jul13Moderate
Aug14Moderate
Sep14Moderate
Oct14Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Honmachi?

Honmachi sits at 32.5°N, 130.6°E, 6 m above sea level, in Japan. The nearest listed city is Uki, 14 km away.

Topography around Honmachi

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Honmachi.

Within 3 km, the terrain around Honmachi has only modest variations in elevation — a maximum elevation change of 30 m around an average of 4 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 974 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,717 m.

The land around Honmachi is covered by artificial surfaces (57%) and cropland (20%) within 3 km, trees (44%) and water (35%) within 16 km, and trees (62%) and water (26%) within 80 km.

3 km
30 m
16 km
974 m
80 km
1,717 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Uki 14 km · Matsubase 17 km · Ōyanomachi-noboritate 19 km · Uto 21 km · Sashiki 24 km · Mifune 32 km · Shimada 33 km · Kotō 33 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

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 Honmachi (32.5044°, 130.5995°, elevation 6 m), 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).