Hirado weather in August

In August, Hirado sees average daytime highs of 30°C and overnight lows near 26°C, with 171 mm of rain across 13.6 wet days and about 13.2 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 34% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 h 42 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Hirado's 4th-clearest and 10th-windiest month. For the whole year in context, see Hirado's year-round climate.

Daytime high
30°
1st warmest
Overnight low
26°
12th coldest
Rainfall
171 mm
13.6 wet days
Daylight
13 h 12 min
5:48 AM – 7:03 PM
Cloud cover
59%
4th clearest
Wind
15 km/h
10th windiest
Solar energy
5.03 kWh/m²
Travel score
4.8
out of 10

Hirado is city in Nagasaki Prefecture, Japan.

Density
133/km²
people per km²
Founded
2005

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical August day in Hirado reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
212926
222926
232925
242925
252925
262925
272925
282925
292925
302925
312925

How August really feels in Hirado

Once humidity and wind are folded in, August averages 30 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
30
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.

Hirado weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 679.60.5102.3
Feb11° / 758.50.410.82.7
Mar14° / 12110.5011.74.0
Apr18° / 13°14210.3012.85.7
May22° / 17°1539.8013.76.5
Jun24° / 20°30214.6014.25.8
Jul28° / 24°27314.80145.2
Aug30° / 26°17113.6013.24.8
Sep27° / 23°18311.4012.26.3
Oct23° / 18°1047011.27.4
Nov18° / 13°948.2010.35.9
Dec13° / 738.309.83.5

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35347
45347
55248
65149
75050
84951
94951
104852
114852
124654
134654
144654
154654
164555
174555
184753
194753
204753
214753
224852
234753
244753
254753
264852
274852
284951
294852
304852
314951

Chance of precipitation in August

Any precipitation

Hirado gets around 171 mm of rain over 13.6 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 44% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
136
236
337
437
538
639
740
841
942
1043
1144
1245
1345
1446
1547
1647
1748
1848
1948
2048
2148
2248
2347
2447
2547
2647
2747
2846
2946
3046
3145

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the miserable band about 53% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1033463
2033463
3023365
4023365
5023464
6023464
7023464
8023464
9023563
10023563
11023662
12023662
13023761
14033859
15133858
16133957
17143956
18154054
19164053
20174052
21284150
22294148
232104246
242124344
252134342
263144439
273154437
283174535
294184533
304204630
314214628

Wind in August

Winds average 15 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 42 min at the start of August to 12 h 48 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 5:38 AM to 5:59 AM, and sunset from 7:18 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.75:387:18
213.65:387:17
313.65:397:16
413.65:407:15
513.65:417:15
613.55:417:14
713.55:427:13
813.55:437:12
913.55:437:11
1013.45:447:10
1113.45:457:09
1213.45:467:08
1313.35:467:07
1413.35:477:06
1513.35:487:04
1613.25:487:03
1713.25:497:02
1813.25:507:01
1913.25:517:00
2013.15:516:59
2113.15:526:57
2213.15:536:56
2313.05:536:55
2413.05:546:54
2513.05:556:52
2612.95:566:51
2712.95:566:50
2812.95:576:49
2912.85:586:47
3012.85:586:46
3112.85:596:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.03 kWh/m².

For context, solar energy here swings from a low near 2.12 kWh/m² to a high of 5.46 kWh/m² in May across the year — August's 5.03 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
194.9Bright
204.9Bright
214.9Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.6Bright
314.6Bright
Planning a trip in August

Hazard calendar for Hirado

In seasonPeak

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

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

Hirado's rainy season runs April–September, 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 Hirado?

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

4.8
Sightseeing
8th-best month of the year
6.4
Beach & pool
2nd-best month of the year

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

What to pack for Hirado in August

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

In August, Hirado sees daytime highs around 30°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

Sea temperature near Hirado 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 offshore is warmest in August at about 27°C and coldest in February near 15°C.

It's comfortable for a long swim from Jun 4 to Nov 24 — about 5.7 months when the water holds above 20°C.

15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Bracing
Mar15Bracing
Apr16Cool
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Hirado 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 Hirado peaks around July 18 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 18UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Hirado 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 Hirado is worst in April — around 24 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodModerateApr 1324 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar23Moderate
Apr24Moderate
May21Moderate
Jun17Moderate
Jul12Good
Aug12Moderate
Sep12Good
Oct11Good
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Hirado?

Hirado sits at 33.4°N, 129.6°E, 5 m above sea level, in Japan. The nearest listed city is Matsuura, 14 km away.

Topography around Hirado

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

Within 3 km, the terrain around Hirado has only modest variations in elevation — a maximum elevation change of 243 m around an average of 33 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 542 m; within 80 km, large variations in elevation — a maximum elevation change of 1,046 m.

The land around Hirado is covered by water (46%) and trees (43%) within 3 km, water (62%) and trees (33%) within 16 km, and water (73%) and trees (21%) within 80 km.

3 km
243 m
16 km
542 m
80 km
1,046 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Matsuura 14 km · Sasebo 27 km · Imarichō-kō 32 km · Arita 38 km · Karatsu 40 km · Saikai 44 km · Takeo 48 km · Iki 49 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 Hirado (33.3685°, 129.5525°, elevation 5 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).