Climate and average weather in Kami

In Kami, the summers are muggy, hot, showery, and partly cloudy and the winters are cool, snowy, and partly cloudy.

Best: mid April to early June

Over the course of the year, the temperature in Kami typically varies from 2°C to 32°C, and is rarely below -2°C or above 35°C. August is the hottest month of the year, while January is the coldest.

Based on the travel score, the best times of year to visit Kami for warm-weather activities are from mid April to early June and late September to mid November.

Hottest
Aug
32°
Coldest
Jan
Wettest
Jun
303 mm
Driest
Jan
59 mm
Rain / yr
1637 mm
135 wet days
Daylight
9.8–14.2 h
shortest–longest
Elevation
79 m
33.5°N
Clearest
Oct
50% cloud

Kami weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid April to early June.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Kami, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.5 months, from June 12 to September 25, with daily high temperatures above 27°C. The hottest month of the year in Kami is August, with an average high of 32°C and low of 24°C.

The cool season lasts 3.2 months, from December 3 to March 10, with daily high temperatures below 14°C. The coldest month of the year in Kami is January, with an average low of 2°C and high of 10°C.

Days typically run about 9°C warmer than nights, with the widest day–night swing (around 10°C) in April.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan102
Feb112
Mar155
Apr2010
May2415
Jun2719
Jul3023
Aug3224
Sep2820
Oct2314
Nov178
Dec123

How hot and cold Kami really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, Kami feels like about 37°C (around August 6). About 60 days a year carry some heat stress, peaking in August.

On the coldest nights, wind chill pulls the feels-like down to about -1°C (around January 24), with roughly 54 freezing days a year (feels-like at or below 0°C), worst in January.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDecdangerous heat
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan910-12
Feb111102
Mar151535
Apr2020910
May24241515
Jun27271919
Jul34302323
Aug36322424
Sep29282020
Oct23231414
Nov171778
Dec121213

Average hourly temperature in Kami

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on August afternoons, near 32°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Kami weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 598.61.6102.1
Feb11° / 6991.210.82.6
Mar15° / 11311.60.211.74.2
Apr20° / 10°12711.1012.86.0
May24° / 15°14410.5013.76.6
Jun27° / 19°30315.7014.25.3
Jul30° / 23°26416.90143.9
Aug32° / 24°15114.4013.23.7
Sep28° / 20°16612.7012.25.5
Oct23° / 14°988011.27.2
Nov17° / 808.1010.35.8
Dec12° / 638.40.69.83.2

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Kami gets about 1637 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 3.7 months, from around Jun 3 to Sep 22, peaking in June at about 66% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Oct 28.

June is the wettest month by volume, with 303 mm over about 16 wet days; January is the driest, with 59 mm. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%60%70%80%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJun 30 · 66%Oct 28 · 24%
Rain on a day (%)Rain days
Jan289
Feb339
Mar3712
Apr3711
May3511
Jun5216
Jul5417
Aug4714
Sep4113
Oct278
Nov278
Dec268

Monthly rainfall

Over a full year, Kami collects about 1637 mm of rain across 135 wet days — roughly 136 mm in an average month.

It doesn’t fall evenly. June is the wettest month with 303 mm, while January is the driest at just 59 mm. The three wettest months alone bring about 45% of the year’s total, and some of the cold-season precipitation falls as snow.

050100150200250300350JanFebMarAprMayJunJulAugSepOctNovDec5969113127144303264151166988063
Rainfall (mm)Rain daysSnow days
Jan5992
Feb6991
Mar113120
Apr127110
May144110
Jun303160
Jul264170
Aug151140
Sep166130
Oct9880
Nov8080
Dec6381

Snow in Kami

Average snowy days through the year, the snow-season span, and estimated snowfall — for ski trips and the perennial 'will there be snow at Christmas?' question.

Kami averages about 4 snowy days a year. Snow season runs roughly Dec 13 to Mar 8 — about 2.8 months.

January is snowiest, with roughly 1.6 days of snow and an estimated 5 cm of snowfall. Over the year that adds up to an estimated 11 cm of snow.

01234JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonJan 20
Snow daysSnowfall (cm)
Jan25
Feb14
Mar01
Apr00
May00
Jun00
Jul00
Aug00
Sep00
Oct00
Nov00
Dec12

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Kami, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around July 27 and lasts for 5.1 months, ending around December 28. The clearest month is October, when the sky is clear, mostly clear, or partly cloudy 59% of the time on average.

The cloudier part of the year begins around May 8 and lasts for 2.6 months, ending around July 26. The cloudiest month is June, when it is overcast or mostly cloudy 78% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecOct 23 · 61%Jun 27 · 16%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan3466
Feb3862
Mar4357
Apr4357
May3961
Jun2278
Jul2971
Aug4456
Sep4753
Oct5941
Nov5347
Dec4456

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 9, brings about 14 h 12 min of light; the shortest, around January 1, only 9 h 48 min — a swing of roughly 4 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan10.07:265:26
Feb10.87:095:54
Mar11.76:346:19
Apr12.85:526:42
May13.75:217:05
Jun14.25:117:23
Jul14.05:227:23
Aug13.25:436:59
Sep12.26:056:17
Oct11.26:275:36
Nov10.36:555:09
Dec9.87:195:07

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Kami averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 14 days.

The sunnier stretch runs 3.5 months, from around Aug 25 to Dec 10. The sunniest month is October, with roughly 13 sunny days (mixed).

The greyest month is June, down near 4 sunny days — about 72% fewer than the October peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergloomymixedbrightOct 2114 daysJun 262 days
Sunny daysSky
Jan5Gloomy
Feb6Gloomy
Mar8Gloomy
Apr9Mixed
May8Mixed
Jun4Gloomy
Jul5Gloomy
Aug8Gloomy
Sep9Mixed
Oct13Mixed
Nov11Mixed
Dec8Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Kami, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.5 months, from around May 27 to October 9. The muggiest month is July, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around October 10 to May 26, and February is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecFeb 3 · 100%Jul 11 · 0%miserablecomfortabledrymuggyhumidoppressivecomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan10000000
Feb9910000
Mar9730000
Apr80145100
May453017700
Jun5142930211
Jul003176615
Aug003126618
Sep5122227312
Oct502415820
Nov8794000
Dec9910000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Kami is steady company: average speeds sit near 8 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeMar 11 · 9 km/hJun 4 · 7 km/h
Wind speed (km/h)Feels
Jan9calm
Feb9calm
Mar9calm
Apr8calm
May7calm
Jun7calm
Jul8calm
Aug7calm
Sep7calm
Oct8calm
Nov8calm
Dec8calm

Hazard calendar for Kami

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

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

Kami's rainy season runs May–September, when most of the year's rain falls.

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

Best time to visit Kami

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Kami throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around late May, Kami is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit Kami for general outdoor tourist activities run from mid April to early June and again from late September to mid November, with a peak score in the third week of October.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationOct 16 · 7.3

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan2.1poor
Feb2.6poor
Mar4.2fair
Apr6.0good
May6.6good
Jun5.3fair
Jul3.9fair
Aug3.7fair
Sep5.5good
Oct7.1good
Nov5.8good
Dec3.3poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Kami for hot-weather activities run from early May to late June and again from early July to late October, with a peak score in the third week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationSep 18 · 6.4

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Kami, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around August (highs near 32°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 10°C), pack a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Kami sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

Sea temperature near Kami

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea at the nearest coast (about 35 km away) is warmest in August at about 27°C and coldest in February near 12°C.

It's comfortable for a long swim from Jun 6 to Nov 9 — about 5.2 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb12Bracing
Mar12Bracing
Apr14Bracing
May18Cool
Jun21Refreshing
Jul25Warm
Aug27Warm
Sep26Warm
Oct23Refreshing
Nov19Cool
Dec16Cool

UV index (midday) in Kami by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Kami peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 17UV 9Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun9Very high
Jul10Very high
Aug9Very high
Sep9Very high
Oct6High
Nov4Moderate
Dec3Moderate

Average hourly UV index in Kami

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 8 hours a day reach index 3 (protection recommended), and 5.5 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb40
Mar5.50
Apr74
May7.54.5
Jun85
Jul85.5
Aug7.55
Sep74.5
Oct62
Nov30
Dec00

Air quality in Kami by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Kami is worst in April — around 25 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1225 µg/m³Oct 1212 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb20Moderate
Mar25Moderate
Apr25Moderate
May23Moderate
Jun18Moderate
Jul13Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov15Moderate
Dec14Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

Kami is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 14 to December 5 (267 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freeMar 1490%Dec 590%
Frost-free chance (%)Frost nights
Jan7231
Feb7628
Mar9112
Apr990
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov980
Dec8424

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Kami banks about 2,683 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar15
Apr145
May292
Jun389
Jul521
Aug551
Sep422
Oct265
Nov83
Dec0

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Kami receives about 3.9 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 2.2 and 5.4 kWh/m².

The brighter stretch of the year lasts 6.6 months, from around Mar 9 to Sep 26. The brightest month is May, averaging about 5.3 kWh/m² (bright).

The dimmest month is December, down near 2.2 kWh/m² — roughly 58% less than the May peak.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightMay 215.4 kWhDec 162.2 kWh
Solar energy (kWh/m²)Level
Jan2.4Moderate
Feb3.1Moderate
Mar4.1Bright
Apr5.0Bright
May5.3Bright
Jun4.5Bright
Jul4.8Bright
Aug4.9Bright
Sep4.1Bright
Oct3.6Moderate
Nov2.7Moderate
Dec2.2Moderate

Where is Kami?

Kami sits at 33.5°N, 130.8°E, 79 m above sea level, in Japan. The nearest listed city is Kawasaki, 9.0 km away.

Topography around Kami

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

Within 3 km, the terrain around Kami has significant variations in elevation — a maximum elevation change of 487 m around an average of 149 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,168 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,796 m.

The land around Kami is covered by trees (76%) within 3 km, trees (74%) within 16 km, and trees (46%) and water (35%) within 80 km.

3 km
487 m
16 km
1,168 m
80 km
1,796 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Kawasaki 9.0 km · Tagawa 12 km · Asakura 13 km · Iizuka 14 km · Amagi 16 km · Akaike 18 km · Yamaguma 18 km · Ukiha 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 Kami (33.5294°, 130.7648°, elevation 79 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).