Itako weather in August

In August, Itako sees average daytime highs of 28°C and overnight lows near 24°C, with 103 mm of rain across 10.7 wet days and about 13.4 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 26% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 13 h 48 min at the start of August to 12 h 48 min by month's end. Set against the rest of the year, August is Itako's 8th-clearest and 11th-windiest month. For the whole year in context, see Itako's year-round climate.

Daytime high
28°
1st warmest
Overnight low
24°
12th coldest
Rainfall
103 mm
10.7 wet days
Daylight
13 h 24 min
5:01 AM – 6:23 PM
Cloud cover
63%
8th clearest
Wind
13 km/h
11th windiest
Solar energy
5.22 kWh/m²
Travel score
5.7
out of 10

Itako is city in Ibaraki Prefecture, Japan.

Density
387/km²
people per km²
Founded
2001

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 28°C through the month.

A typical August day in Itako reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°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)
12824
22824
32824
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824
312823

How August really feels in Itako

Once humidity and wind are folded in, August averages 4 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
4
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.

Itako weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7780.69.82.0
Feb / 748.50.810.62.1
Mar12° / 12812.60.411.73.1
Apr16° / 11°11812.5012.94.9
May20° / 15°13612013.95.9
Jun23° / 19°15713.6014.45.8
Jul27° / 22°14913.6014.25.8
Aug28° / 24°10310.7013.45.7
Sep25° / 22°17113.8012.26.0
Oct21° / 17°21313011.16.0
Nov16° / 11°10710.7010.15.0
Dec11° / 739.209.63.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 17% of August, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24159
34159
44258
54258
64357
74357
84357
94357
104357
114357
124357
134357
144357
154357
164357
174357
184357
194456
204456
214456
224555
234456
244456
254456
264555
274456
284456
294456
304357
314357

Chance of precipitation in August

Any precipitation

Itako gets around 103 mm of rain over 10.7 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 35% and peaks near 41% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
131
231
332
432
532
632
733
833
933
1034
1134
1234
1335
1435
1535
1636
1736
1836
1936
2036
2136
2236
2337
2437
2537
2638
2738
2839
2939
3040
3141

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
105126320
204126222
304126123
404126024
504125925
604125925
704125826
804125826
904125727
1004135627
1104135627
1204135627
1304145527
1404145527
1514155426
1614155426
1714155525
1814155525
1915165424
2015165523
2115175522
2215185422
2315185521
2415195520
2515205519
2615215518
2715225517
2815235516
2915245416
3015255415
3115265414

Wind in August

Winds average 13 km/h in August.

Across August, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 48 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 60 minutes over August. Sunrise moves from 4:49 AM to 5:13 AM, and sunset from 6:39 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:496:39
213.84:496:38
313.84:506:37
413.84:516:36
513.74:526:35
613.74:536:34
713.74:536:33
813.64:546:32
913.64:556:31
1013.64:566:30
1113.54:576:29
1213.54:576:28
1313.54:586:27
1413.44:596:26
1513.45:006:24
1613.45:016:23
1713.35:026:22
1813.35:026:21
1913.35:036:19
2013.25:046:18
2113.25:056:17
2213.25:066:15
2313.15:066:14
2413.15:076:13
2513.15:086:11
2613.05:096:10
2713.05:106:09
2812.95:106:07
2912.95:116:06
3012.95:126:04
3112.85:136:03

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.22 kWh/m².

For context, solar energy here swings from a low near 2.33 kWh/m² to a high of 5.41 kWh/m² in May across the year — August's 5.22 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.8Bright
304.7Bright
314.7Bright
Planning a trip in August

Hazard calendar for Itako

In seasonPeak

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

Itako 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 Itako?

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

5.7
Sightseeing
6th-best month of the year
6.6
Beach & pool
1st-best month of the year

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

What to pack for Itako in August

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

In August, Itako sees daytime highs around 28°C and nights near 24°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

Sea temperature near Itako in August

The nearest coast averages about 24°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 22 km away) is warmest in August at about 24°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 23 to Oct 28 — about 4.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan15Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May17Cool
Jun20Cool
Jul22Refreshing
Aug24Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Itako in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Itako peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 12UV 10Dec 23UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov3Moderate
Dec2Moderate

Air quality in Itako 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 Itako is worst in March — around 25 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2425 µg/m³Dec 1914 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar25Moderate
Apr25Moderate
May24Moderate
Jun19Moderate
Jul16Moderate
Aug15Moderate
Sep15Moderate
Oct16Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Itako?

Itako sits at 35.9°N, 140.6°E, 0 m above sea level, in Japan. The nearest listed city is Katori-shi, 6.0 km away.

Topography around Itako

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

Within 3 km, the terrain around Itako has only modest variations in elevation — a maximum elevation change of 43 m around an average of 4 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 70 m; within 80 km, large variations in elevation — a maximum elevation change of 840 m.

The land around Itako is covered by cropland (54%) and artificial surfaces (21%) within 3 km, cropland (31%), trees (25%) and water (21%) within 16 km, and water (37%) and trees (25%) within 80 km.

3 km
43 m
16 km
70 m
80 km
840 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Katori-shi 6.0 km · Sawara 7.0 km · Kashima-shi 9.0 km · Namegata 10 km · Omigawa 11 km · Kamisu 11 km · Inashiki 21 km · Edosaki 21 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 Itako (35.9333°, 140.55°, elevation 0 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).