Kanaishima weather in August

In August, Kanaishima sees average daytime highs of 28°C and overnight lows near 22°C, with 185 mm of rain across 16.4 wet days and about 13.3 hours of daylight. It is the 1st-warmest and 6th-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 20% 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 Kanaishima's 8th-clearest and 8th-windiest month. For the whole year in context, see Kanaishima's year-round climate.

Daytime high
28°
1st warmest
Overnight low
22°
12th coldest
Rainfall
185 mm
16.4 wet days
Daylight
13 h 18 min
5:07 AM – 6:28 PM
Cloud cover
68%
8th clearest
Wind
6 km/h
8th windiest
Solar energy
4.98 kWh/m²
Travel score
4.9
out of 10

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 Kanaishima reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°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)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172822
182822
192822
202822
212822
222822
232822
242822
252822
262821
272821
282821
292721
302721
312721

How August really feels in Kanaishima

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.

Kanaishima weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 9710.14.69.91.1
Feb / 10610.84.810.71.2
Mar11° / 184163.611.72.4
Apr16° / 17814.40.412.94.5
May20° / 13°18614.6013.85.5
Jun23° / 17°24317.8014.35.2
Jul27° / 21°23517.8014.14.9
Aug28° / 22°18516.4013.34.9
Sep25° / 19°26316.7012.25.5
Oct20° / 13°26115.7011.15.4
Nov15° / 13212.1010.14.2
Dec10° / 9010.419.72.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 15% of August, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33565
43565
53565
63565
73565
83565
93565
103565
113565
123565
133565
143565
153565
163565
173565
183565
193565
203565
213664
223664
233664
243565
253565
263565
273664
283664
293565
303565
313565

Chance of precipitation in August

Any precipitation

Kanaishima gets around 185 mm of rain over 16.4 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 53% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
154
254
354
454
554
654
754
854
954
1054
1154
1254
1354
1454
1554
1653
1753
1853
1953
2052
2152
2252
2352
2452
2552
2652
2753
2853
2953
3054
3154

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10623674
20523675
30522685
40522685
50521695
60521695
70521695
80521695
90521695
100521695
111521685
121622674
131622674
141623664
151624663
161624663
171725643
181726633
191727632
201828612
211829602
222931562
232932561
242934541
2521035521
2621036511
2721138491
2821239471
2921240451
3021341431
3121442411

Wind in August

Winds average 6 km/h in August.

Across August, daily wind ranges from about 6 km/h on the calmest days to 6 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
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 4:56 AM to 5:19 AM, and sunset from 6:44 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.84:566:44
213.84:566:43
313.74:576:42
413.74:586:41
513.74:596:40
613.74:596:39
713.65:006:38
813.65:016:37
913.65:026:36
1013.55:036:35
1113.55:036:34
1213.55:046:33
1313.45:056:31
1413.45:066:30
1513.45:076:29
1613.35:076:28
1713.35:086:27
1813.35:096:25
1913.25:106:24
2013.25:106:23
2113.25:116:22
2213.15:126:20
2313.15:136:19
2413.15:146:18
2513.05:146:16
2613.05:156:15
2713.05:166:14
2812.95:176:12
2912.95:176:11
3012.95:186:10
3112.85:196:08

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.98 kWh/m².

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 5.27 kWh/m² in May across the year — August's 4.98 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.7Bright
264.7Bright
274.7Bright
284.6Bright
294.6Bright
304.6Bright
314.5Bright
Planning a trip in August

Hazard calendar for Kanaishima

In seasonPeak

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

Kanaishima 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 Kanaishima?

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

4.9
Sightseeing
5th-best month of the year
5.7
Beach & pool
1st-best month of the year

August is a reasonable time to visit Kanaishima for sightseeing.

What to pack for Kanaishima in August

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

In August, Kanaishima sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Kanaishima in August

The nearest coast averages about 26°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 24 km away) is warmest in August at about 26°C and coldest in February near 15°C.

It's comfortable for a long swim from May 31 to Nov 26 — about 5.9 months when the water holds above 20°C.

15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan16Cool
Feb15Cool
Mar16Cool
Apr17Cool
May19Cool
Jun21Refreshing
Jul24Refreshing
Aug26Warm
Sep25Warm
Oct23Refreshing
Nov21Refreshing
Dec18Cool

UV index in Kanaishima 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 Kanaishima peaks around July 20 at about 10 (extreme) — 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 highExtremeVery highHighModerateJul 20UV 10Dec 23UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May9Very high
Jun9Very high
Jul10Extreme
Aug10Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec2Moderate

Air quality in Kanaishima 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 Kanaishima is worst in April — around 23 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1623 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb20Moderate
Mar20Moderate
Apr23Moderate
May20Moderate
Jun17Moderate
Jul13Moderate
Aug12Good
Sep12Good
Oct12Good
Nov11Good
Dec10Good
Location & terrain

Where is Kanaishima?

Kanaishima sits at 35.3°N, 139.1°E, 60 m above sea level, in Japan. The nearest listed city is Minamiashigara, 3.0 km away.

Topography around Kanaishima

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

Within 3 km, the terrain around Kanaishima has significant variations in elevation — a maximum elevation change of 521 m around an average of 130 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,659 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,737 m.

The land around Kanaishima is covered by trees (45%) and artificial surfaces (37%) within 3 km, trees (72%) within 16 km, and trees (48%) and water (31%) within 80 km.

3 km
521 m
16 km
1,659 m
80 km
3,737 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Minamiashigara 3.0 km · Kamiōi 5.0 km · Hadano 10 km · Odawara 11 km · Ninomiya 13 km · Gotemba 16 km · Ōiso 18 km · Isehara 19 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 Kanaishima (35.3441°, 139.1175°, elevation 60 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).