Naka-niida weather in August

In August, Naka-niida sees average daytime highs of 27°C and overnight lows near 21°C, with 166 mm of rain across 15.8 wet days and about 13.5 hours of daylight. It is the 1st-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 26°C by the end. The sky is clear or mostly clear about 15% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 14 hours at the start of August to 12 h 54 min by month's end. Set against the rest of the year, August is Naka-niida's 10th-clearest and 12th-windiest month. For the whole year in context, see Naka-niida's year-round climate.

Daytime high
27°
1st warmest
Overnight low
21°
12th coldest
Rainfall
166 mm
15.8 wet days
Daylight
13 h 30 min
4:55 AM – 6:26 PM
Cloud cover
74%
10th clearest
Wind
6 km/h
12th windiest
Solar energy
4.2 kWh/m²
Travel score
5.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 28°C in the first days to 26°C by the end.

A typical August day in Naka-niida reaches about 27°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 32°C. Set against its neighbours, August runs about 1°C warmer than July and about 4°C warmer than September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162721
172721
182721
192721
202720
212720
222720
232720
242720
252720
262720
272720
282620
292620
302620
312619

How August really feels in Naka-niida

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.

Naka-niida weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°7013.312.99.60.0
Feb / -4°5310.79.710.50.0
Mar / -1°9012.46.811.71.2
Apr14° / 9512.41.5134.0
May19° / 10°10311.4014.15.9
Jun23° / 15°13012.9014.65.9
Jul26° / 19°19217.5014.45.3
Aug27° / 21°16615.8013.55.3
Sep24° / 17°15814.5012.35.8
Oct18° / 10°129110115.5
Nov12° / 6810.21.49.93.0
Dec / -1°6813.48.69.40.4

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
42971
52971
62971
72971
83070
93070
102971
112872
122872
132872
142872
152971
162872
172872
182872
192872
202872
212872
222971
232971
242872
252872
262971
272971
282971
292971
302971
312971

Chance of precipitation in August

Any precipitation

Naka-niida gets around 166 mm of rain over 15.8 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 51% and peaks near 53% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
149
249
349
449
549
649
749
849
950
1050
1151
1251
1351
1452
1552
1652
1752
1852
1952
2052
2152
2252
2352
2452
2552
2652
2752
2852
2952
3052
3153

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 43% of days. Sticky, muggy-or-worse air turns up on roughly 77% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
141332492
241331502
341330512
441330512
541430502
641430502
741430502
841430502
941430502
1041431492
1141531482
1241532482
1341532472
1441533462
1541533452
1651534452
1751634442
1851634432
1961634422
2061635412
2171735401
2271735391
2371835381
2481935371
2581936351
2682036341
2792136321
2892236311
2992337301
30102437281
31102537261

Wind in August

Winds average 6 km/h in August, the calmest month.

Across August, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 hours at the start of August to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over August. Sunrise moves from 4:42 AM to 5:09 AM, and sunset from 6:44 PM to 6:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.04:426:44
214.04:436:43
314.04:446:42
413.94:446:40
513.94:456:39
613.94:466:38
713.84:476:37
813.84:486:36
913.84:496:35
1013.74:506:34
1113.74:516:32
1213.74:526:31
1313.64:536:30
1413.64:536:29
1513.64:546:27
1613.54:556:26
1713.54:566:25
1813.44:576:23
1913.44:586:22
2013.44:596:21
2113.35:006:19
2213.35:016:18
2313.25:026:16
2413.25:036:15
2513.25:046:13
2613.15:046:12
2713.15:056:10
2813.05:066:09
2913.05:076:07
3013.05:086:06
3112.95:096:04

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.2 kWh/m².

For context, solar energy here swings from a low near 1.99 kWh/m² to a high of 5.29 kWh/m² in May across the year — August's 4.2 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.0Bright
224.0Bright
234.0Moderate
244.0Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.8Moderate
313.8Moderate
Planning a trip in August

Hazard calendar for Naka-niida

In seasonPeak

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

Naka-niida 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 Naka-niida?

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

5.3
Sightseeing
5th-best month of the year
5.6
Beach & pool
1st-best month of the year

August is a reasonable time to visit Naka-niida for sightseeing.

What to pack for Naka-niida in August

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

In August, Naka-niida sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. About 16 days see rain.

light clothesrain gear

Sea temperature near Naka-niida in August

The nearest coast averages about 23°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 50 km away) is warmest in August at about 23°C and coldest in March near 8°C.

It's comfortable for a long swim from Jul 10 to Oct 8 — about 3 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb9Bracing
Mar8Bracing
Apr10Bracing
May13Bracing
Jun17Cool
Jul21Refreshing
Aug23Refreshing
Sep22Refreshing
Oct19Cool
Nov16Cool
Dec14Bracing

UV index in Naka-niida 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 Naka-niida peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 16UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec2Low

Air quality in Naka-niida 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 Naka-niida is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 9 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1621 µg/m³Dec 1710 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun14Moderate
Jul12Good
Aug10Good
Sep10Good
Oct11Good
Nov11Good
Dec9Good
Location & terrain

Where is Naka-niida?

Naka-niida sits at 38.6°N, 140.9°E, 31 m above sea level, in Japan. The nearest listed city is Furukawa, 9.0 km away.

Topography around Naka-niida

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

Within 3 km, the terrain around Naka-niida has only modest variations in elevation — a maximum elevation change of 63 m around an average of 32 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 608 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,978 m.

The land around Naka-niida is covered by cropland (63%) within 3 km, trees (57%) and cropland (31%) within 16 km, and trees (64%) and water (20%) within 80 km.

3 km
63 m
16 km
608 m
80 km
1,978 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Furukawa 9.0 km · Ōsaki 11 km · Yoshioka 14 km · Kogota 17 km · Kogota-ekimae 19 km · Tomiya 20 km · Kurihara 24 km · Wakuya 25 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 Naka-niida (38.5686°, 140.8536°, elevation 31 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).