Mombetsu weather in August

In August, Mombetsu sees average daytime highs of 23°C and overnight lows near 16°C, with 133 mm of rain across 13.4 wet days and about 13.8 hours of daylight. It is the 1st-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 16% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 30 min at the start of August to 13 h 06 min by month's end. Set against the rest of the year, August is Mombetsu's 11th-clearest and 10th-windiest month. For the whole year in context, see Mombetsu's year-round climate.

Daytime high
23°
1st warmest
Overnight low
16°
12th coldest
Rainfall
133 mm
13.4 wet days
Daylight
13 h 54 min
4:35 AM – 6:27 PM
Cloud cover
73%
11th clearest
Wind
8 km/h
10th windiest
Solar energy
4.52 kWh/m²
Travel score
6.1
out of 10

Mombetsu is city in Hokkaido, Japan.

Density
28/km²
people per km²
Founded
1954

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 23°C through the month.

A typical August day in Mombetsu reaches about 23°C in the afternoon and slips back to 16°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 28°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)
12316
22317
32417
42417
52417
62417
72417
82317
92317
102317
112316
122316
132316
142316
152316
162316
172316
182316
192316
202316
212316
222316
232315
242315
252315
262315
272315
282315
292315
302315
312215

How August really feels in Mombetsu

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.

Mombetsu 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-4° / -11°6410.312.290.0
Feb-3° / -11°499.211.710.20.0
Mar / -6°6111.611.611.60.0
Apr / -0°6711.56.313.21.7
May15° / 8111.61.314.64.2
Jun18° / 10°8011.4015.35.4
Jul22° / 15°11012.10156.0
Aug23° / 16°13313.4013.86.1
Sep20° / 12°12112.3012.35.8
Oct14° / 85110.410.84.0
Nov / -1°7211.25.79.40.7
Dec-1° / -7°729.710.58.70.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% 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 70%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32674
42773
52773
62773
72773
82872
92872
102872
112872
122971
132872
142872
152971
162971
173070
183070
193070
202971
213169
223169
233268
243268
253268
263466
273367
283466
293565
303466
313565

Chance of precipitation in August

Any precipitation

Mombetsu gets around 133 mm of rain over 13.4 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 44% and peaks near 47% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
140
240
341
441
542
642
743
843
944
1044
1145
1246
1346
1446
1547
1647
1747
1847
1947
2046
2146
2245
2344
2444
2543
2642
2742
2842
2941
3041
3140

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 31% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1921273310
2921273310
3920273310
4920273310
5920273310
6920283310
792028339
892129339
992129328
1092230328
1192331317
1282332307
1382432296
1482433296
1582534285
1682534275
1792635265
1892635254
1992735244
20102835234
21112935223
22112935213
23123035203
24133135193
25143134192
26153233182
27163233172
28173332172
29183330162
30203429152
31213528142

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
299calm
309calm
319calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 30 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 84 minutes over August. Sunrise moves from 4:18 AM to 4:53 AM, and sunset from 6:48 PM to 6:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.54:186:48
214.54:196:47
314.44:206:45
414.44:216:44
514.34:226:43
614.34:236:41
714.34:246:40
814.24:256:39
914.24:276:37
1014.14:286:36
1114.14:296:34
1214.04:306:33
1314.04:316:31
1414.04:326:30
1513.94:346:28
1613.94:356:27
1713.84:366:25
1813.84:376:23
1913.74:386:22
2013.74:406:20
2113.64:416:18
2213.64:426:17
2313.54:436:15
2413.54:446:13
2513.44:466:11
2613.44:476:10
2713.34:486:08
2813.34:496:06
2913.24:506:04
3013.24:526:02
3113.14:536:01

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.52 kWh/m².

For context, solar energy here swings from a low near 1.58 kWh/m² to a high of 5.48 kWh/m² in May across the year — August's 4.52 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.2Bright
Planning a trip in August

Hazard calendar for Mombetsu

In seasonPeak

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

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

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

Is August a good time to visit Mombetsu?

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

6.1
Sightseeing
1st-best month of the year
4.7
Beach & pool
1st-best month of the year

August is a reasonable time to visit Mombetsu for sightseeing.

What to pack for Mombetsu in August

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

In August, Mombetsu sees daytime highs around 23°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Mombetsu in August

The nearest coast averages about 17°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 17°C and coldest in February near -1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan0Bracing
Feb-1Bracing
Mar0Bracing
Apr2Bracing
May5Bracing
Jun10Bracing
Jul14Bracing
Aug17Cool
Sep17Cool
Oct13Bracing
Nov7Bracing
Dec3Bracing

UV index in Mombetsu in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mombetsu peaks around August 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateLowAug 14UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May7High
Jun7High
Jul7High
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Mombetsu?

Mombetsu sits at 44.4°N, 143.4°E, 16 m above sea level, in Japan. The nearest listed city is Engaru, 37 km away.

Fukagawa

Topography around Mombetsu

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

Within 3 km, the terrain around Mombetsu has significant variations in elevation — a maximum elevation change of 340 m around an average of 40 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 420 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,956 m.

The land around Mombetsu is covered by water (41%), trees (28%) and artificial surfaces (22%) within 3 km, water (50%) and trees (37%) within 16 km, and trees (58%) and water (32%) within 80 km.

3 km
340 m
16 km
420 m
80 km
1,956 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Engaru 37 km · Nayoro 71 km · Kitami 75 km · Minamishibetsuchō 81 km · Abashiri 82 km · Motomachi 83 km · Asahikawa 102 km · Fukagawa 127 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 Mombetsu (44.3525°, 143.3525°, elevation 16 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).