Date weather in August

In August, Date sees average daytime highs of 24°C and overnight lows near 19°C, with 165 mm of rain across 12 wet days and about 13.7 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 18% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Date's 11th-clearest and 12th-windiest month. For the whole year in context, see Date's year-round climate.

Daytime high
24°
1st warmest
Overnight low
19°
12th coldest
Rainfall
165 mm
12 wet days
Daylight
13 h 42 min
4:48 AM – 6:33 PM
Cloud cover
71%
11th clearest
Wind
9 km/h
12th windiest
Solar energy
4.18 kWh/m²
Travel score
6.4
out of 10

Date is city in Hokkaidō, Japan.

Density
79/km²
people per km²
Founded
2006

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 24°C through the month.

A typical August day in Date reaches about 24°C in the afternoon and slips back to 19°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, August runs about 2°C warmer than July and about 3°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52419
62419
72419
82419
92419
102419
112419
122419
132419
142419
152419
162419
172419
182419
192419
202419
212419
222419
232418
242418
252418
262318
272318
282318
292318
302318
312318

How August really feels in Date

Once humidity and wind are folded in, August averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Date weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -7°447.911.79.20.0
Feb-1° / -7°406.98.910.30.0
Mar / -4°549.67.911.60.0
Apr / 7010.31.913.11.8
May14° / 8910.9014.44.2
Jun18° / 13°759015.15.8
Jul22° / 17°13112.7014.86.0
Aug24° / 19°16512013.76.4
Sep21° / 15°13411.7012.36.1
Oct15° / 8610.70.110.84.4
Nov / 74113.19.61.1
Dec / -4°6010.312.38.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% 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 68%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53070
62971
72971
82971
92971
102971
112971
122971
133070
143070
153070
163070
173169
183367
193367
203466
213466
223466
233664
243664
253763
263763
273664
283763
293763
303763
313763

Chance of precipitation in August

Any precipitation

Date gets around 165 mm of rain over 12 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 39% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
140
240
340
440
540
640
739
839
939
1039
1139
1239
1339
1439
1539
1639
1739
1839
1939
2039
2138
2238
2338
2438
2539
2639
2739
2839
2939
3039
3139

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 36% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1113294017
2113284018
3113284019
4112274019
5112284019
6112284019
7211284019
8211294019
9211304018
10210313918
11210313918
12210323917
1329333917
1439343816
1539343816
16310353715
17310363615
18311363614
19312373514
20312373413
21413373412
22414383312
23414383311
24415383211
25416383210
26516383110
2751738309
2861838309
2961938298
3072038288
3172138277

Wind in August

Winds average 9 km/h in August, the calmest month.

Across August, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 4:32 AM to 5:05 AM, and sunset from 6:53 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:326:53
214.34:336:52
314.34:346:50
414.24:366:49
514.24:376:48
614.24:386:47
714.14:396:45
814.14:406:44
914.04:416:43
1014.04:426:41
1114.04:436:40
1213.94:446:39
1313.94:456:37
1413.84:466:36
1513.84:476:34
1613.74:486:33
1713.74:506:31
1813.74:516:30
1913.64:526:28
2013.64:536:27
2113.54:546:25
2213.54:556:23
2313.44:566:22
2413.44:576:20
2513.34:586:19
2613.34:596:17
2713.25:006:15
2813.25:026:13
2913.25:036:12
3013.15:046:10
3113.15:056:08

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.18 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 5.39 kWh/m² in May across the year — August's 4.18 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Moderate
304.0Moderate
314.0Moderate
Planning a trip in August

Hazard calendar for Date

In seasonPeak

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

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

Date's rainy season runs May–October, 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 Date?

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

6.4
Sightseeing
1st-best month of the year
5.3
Beach & pool
1st-best month of the year

August is a reasonable time to visit Date for sightseeing.

What to pack for Date in August

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

In August, Date sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes and rain gear. About 12 days see rain.

light clothesrain gear

Sea temperature near Date in August

The nearest coast averages about 21°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 21°C and coldest in February near 4°C.

It's comfortable for a long swim from Aug 9 to Sep 13 — about 1.2 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan6Bracing
Feb4Bracing
Mar4Bracing
Apr6Bracing
May9Bracing
Jun14Bracing
Jul18Cool
Aug21Refreshing
Sep20Refreshing
Oct17Cool
Nov12Bracing
Dec9Bracing

UV index in Date 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 Date peaks around August 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighVery highHighModerateLowAug 18UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May8Very high
Jun7High
Jul5Moderate
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Date 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 Date is worst in April — around 20 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1219 µg/m³Dec 158 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb14Moderate
Mar19Moderate
Apr20Moderate
May18Moderate
Jun12Moderate
Jul11Good
Aug10Good
Sep9Good
Oct11Good
Nov9Good
Dec8Good
Location & terrain

Where is Date?

Date sits at 42.5°N, 140.9°E, 6 m above sea level, in Japan. The nearest listed city is Muroran, 19 km away.

Topography around Date

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

Within 3 km, the terrain around Date has only modest variations in elevation — a maximum elevation change of 147 m around an average of 23 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 901 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,867 m.

The land around Date is covered by water (33%), artificial surfaces (23%) and cropland (21%) within 3 km, water (48%) and trees (41%) within 16 km, and trees (53%) and water (38%) within 80 km.

3 km
147 m
16 km
901 m
80 km
1,867 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Muroran 19 km · Noboribetsu 26 km · Shiraoi 41 km · Niseko 41 km · Kutchan 49 km · Yakumo 55 km · Tomakomai 63 km · Honchō 65 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 Date (42.4681°, 140.8681°, 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).