Mutsu weather in August

In August, Mutsu sees average daytime highs of 22°C and overnight lows near 20°C, with 153 mm of rain across 11.3 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 22°C through the month. The sky is clear or mostly clear about 25% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Mutsu's 11th-clearest and 10th-windiest month. For the whole year in context, see Mutsu's year-round climate.

Daytime high
22°
1st warmest
Overnight low
20°
12th coldest
Rainfall
153 mm
11.3 wet days
Daylight
13 h 42 min
4:49 AM – 6:29 PM
Cloud cover
66%
11th clearest
Wind
20 km/h
10th windiest
Solar energy
4.61 kWh/m²
Travel score
6.4
out of 10

Mutsu is city in Aomori Prefecture, Japan.

Density
65/km²
people per km²
Founded
1959

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 22°C through the month.

A typical August day in Mutsu reaches about 22°C in the afternoon and slips back to 20°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, August runs about 3°C warmer than July and about 2°C warmer than September.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12220
22220
32220
42220
52220
62220
72220
82220
92220
102220
112220
122221
132221
142221
152221
162221
172221
182221
192221
202221
212221
222221
232221
242221
252221
262221
272221
282220
292220
302220
312220

How August really feels in Mutsu

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.

Mutsu 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 / -2°10018.416.89.40.0
Feb / -2°71141410.30.0
Mar / 7112.2811.70.0
Apr / 7410.21.513.10.7
May11° / 9910.8014.32.7
Jun15° / 13°909.3014.94.6
Jul19° / 18°14011.7014.75.8
Aug22° / 20°15311.3013.76.4
Sep21° / 19°15112.3012.35.9
Oct15° / 13°11312.4010.94.5
Nov / 8613.21.69.71.5
Dec / 11016.411.29.10.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 13% of August, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33763
43862
53763
63763
73763
83664
93763
103763
113664
123763
133664
143664
153763
163763
173862
183862
193862
203961
213961
223961
233961
244060
254060
264159
274159
284159
294159
304159
314060

Chance of precipitation in August

Any precipitation

Mutsu gets around 153 mm of rain over 11.3 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 36% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
231
331
431
532
632
733
833
934
1034
1135
1235
1336
1436
1537
1637
1738
1838
1938
2039
2139
2239
2339
2439
2540
2640
2740
2840
2940
3040
3140

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 41% of days. Sticky, muggy-or-worse air turns up on roughly 66% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
119224324
219224326
319214227
418214129
518214129
618214030
717214031
817224031
917224031
1016224031
1116234031
1216234031
1316234030
1415244030
1515244029
1615254128
1716254128
1816254127
1916254126
2017264125
2117264124
2228264123
2328274122
2429274121
2529284120
26210284119
27210294018
28211304017
29212303917
30212313816
31213323815

Wind in August

Winds average 20 km/h in August.

Across August, daily wind ranges from about 19 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
820light breeze
920light breeze
1020light breeze
1120light breeze
1220breezy
1320breezy
1420breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920breezy
2020breezy
2120breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 12 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over August. Sunrise moves from 4:34 AM to 5:05 AM, and sunset from 6:48 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.24:346:48
214.24:356:47
314.24:366:46
414.14:376:45
514.14:386:44
614.14:396:43
714.04:406:41
814.04:416:40
913.94:426:39
1013.94:436:38
1113.94:446:36
1213.84:456:35
1313.84:466:34
1413.84:476:32
1513.74:486:31
1613.74:496:29
1713.64:506:28
1813.64:516:26
1913.54:526:25
2013.54:536:23
2113.54:546:22
2213.44:556:20
2313.44:566:19
2413.34:576:17
2513.34:596:15
2613.25:006:14
2713.25:016:12
2813.15:026:11
2913.15:036:09
3013.15:046:07
3113.05:056:06

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.61 kWh/m².

For context, solar energy here swings from a low near 1.73 kWh/m² to a high of 5.67 kWh/m² in May across the year — August's 4.61 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.8Bright
84.8Bright
94.8Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.3Bright
304.3Bright
314.3Bright
Planning a trip in August

Hazard calendar for Mutsu

In seasonPeak

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

Mutsu 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 Mutsu?

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
4.4
Beach & pool
1st-best month of the year

August is a reasonable time to visit Mutsu for sightseeing.

What to pack for Mutsu in August

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

In August, Mutsu sees daytime highs around 22°C and nights near 20°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Mutsu in August

The nearest coast averages about 22°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 22°C and coldest in March near 7°C.

It's comfortable for a long swim from Jul 31 to Oct 3 — about 2.1 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan10Bracing
Feb7Bracing
Mar7Bracing
Apr8Bracing
May11Bracing
Jun14Bracing
Jul18Cool
Aug22Refreshing
Sep22Refreshing
Oct19Cool
Nov15Cool
Dec12Bracing

UV index in Mutsu 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 Mutsu peaks around August 19 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 19UV 8Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr6High
May8Very high
Jun7Very high
Jul5Moderate
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Mutsu 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 Mutsu is worst in April — around 19 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1419 µg/m³Dec 177 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb12Good
Mar17Moderate
Apr19Moderate
May16Moderate
Jun11Good
Jul10Good
Aug10Good
Sep9Good
Oct9Good
Nov8Good
Dec7Good
Location & terrain

Where is Mutsu?

Mutsu sits at 41.3°N, 141.2°E, 6 m above sea level, in Japan. The nearest listed city is Toyota, 60 km away.

Topography around Mutsu

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

Within 3 km, the terrain around Mutsu has only modest variations in elevation — a maximum elevation change of 63 m around an average of 14 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 868 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,559 m.

The land around Mutsu is covered by trees (38%) and artificial surfaces (27%) within 3 km, trees (59%) and water (33%) within 16 km, and water (63%) and trees (31%) within 80 km.

3 km
63 m
16 km
868 m
80 km
1,559 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Toyota 60 km · Aomori 66 km · Hakodate 67 km · Misawa 69 km · Towada 74 km · Hitokawame 75 km · Kamiiso 76 km · Hokuto 76 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 Mutsu (41.2894°, 141.2169°, 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).