Climate and average weather in Myoko

In Myoko, the summers are humid, warm, wet, and partly cloudy and the winters are cold, snowy, and mostly cloudy.

Best: mid August to late October

Over the course of the year, the temperature in Myoko typically varies from -3°C to 28°C, and is rarely below -6°C or above 32°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 Myoko for warm-weather activities are from late April to early July and mid August to late October.

Hottest
Aug
28°
Coldest
Jan
-3°
Wettest
Jul
249 mm
Driest
Apr
117 mm
Rain / yr
2221 mm
227 wet days
Daylight
9.5–14.5 h
shortest–longest
Elevation
79 m
37.0°N
Clearest
Apr
62% cloud

Myoko 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 August to late October.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 3.7 months, from June 5 to September 24, with daily high temperatures above 22°C. The hottest month of the year in Myoko is August, with an average high of 28°C and low of 21°C.

The cool season lasts 3.5 months, from December 6 to March 21, with daily high temperatures below 8°C. The coldest month of the year in Myoko is January, with an average low of -3°C and high of 3°C.

Days typically run about 7°C warmer than nights, with the widest day–night swing (around 9°C) in April.

-10°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3-3
Feb3-3
Mar7-1
Apr134
May1910
Jun2316
Jul2620
Aug2821
Sep2417
Oct1811
Nov124
Dec6-1

How hot and cold Myoko 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 coldest nights, wind chill pulls the feels-like down to about -7°C (around January 27), with roughly 131 freezing days a year (feels-like at or below 0°C), worst in January.

-10°10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan33-6-3
Feb33-6-3
Mar77-3-1
Apr131324
May19191010
Jun23231516
Jul27262020
Aug29282121
Sep24241717
Oct18181011
Nov121234
Dec66-4-1

Average hourly temperature in Myoko

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 28°C, and coldest before dawn in January, near -3°C.

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

Myoko 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
Jan / -3°24225.423.59.70.0
Feb / -3°17920.918.410.60.0
Mar / -1°1622013.311.70.6
Apr13° / 11714.82.712.93.4
May19° / 10°130140145.6
Jun23° / 16°16616.5014.55.4
Jul26° / 20°24921.1014.34.8
Aug28° / 21°19119.7013.44.8
Sep24° / 17°20417.2012.35.4
Oct18° / 11°18816.40114.9
Nov12° / 16618.23.4102.5
Dec / -1°2272315.69.50.3

Chance of rain

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

Myoko gets about 2221 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.

The wetter season lasts 4.1 months, from around Nov 18 to Mar 22, peaking in January at about 82% chance on a given day. The drier stretch runs the rest of the year, bottoming out around May 29.

July is the wettest month by volume, with 249 mm over about 21 wet days; April is the driest, with 117 mm. Some of the cold-season precipitation falls as snow.

0%10%20%30%40%50%60%70%80%90%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 23 · 82%May 29 · 44%
Rain on a day (%)Rain days
Jan8125
Feb7521
Mar6420
Apr5015
May4514
Jun5617
Jul6721
Aug6320
Sep5917
Oct5216
Nov6118
Dec7423

Monthly rainfall

Over a full year, Myoko collects about 2221 mm of rain across 227 wet days — roughly 185 mm in an average month.

It doesn’t fall evenly. July is the wettest month with 249 mm, while April is the driest at just 117 mm. The three wettest months alone bring about 32% of the year’s total, and some of the cold-season precipitation falls as snow.

050100150200250300JanFebMarAprMayJunJulAugSepOctNovDec242179162117130166249191204188166227
Rainfall (mm)Rain daysSnow days
Jan2422524
Feb1792118
Mar1622013
Apr117153
May130140
Jun166170
Jul249210
Aug191200
Sep204170
Oct188160
Nov166183
Dec2272316

Snow in Myoko

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.

Myoko averages about 77 snowy days a year. Snow season runs roughly Oct 31 to Apr 26 — about 5.9 months.

January is snowiest, with roughly 23 days of snow and an estimated 185 cm of snowfall. Over the year that adds up to an estimated 571 cm of snow.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsnow seasonsnow seasonJan 23
Snow daysSnowfall (cm)
Jan24185
Feb18158
Mar1378
Apr39
May00
Jun00
Jul00
Aug00
Sep00
Oct00
Nov317
Dec16124

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

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

The clearer part of the year begins around October 5 and lasts for 2.0 months, ending around December 3. The clearest month is April, when the sky is clear, mostly clear, or partly cloudy 41% of the time on average.

The cloudier part of the year begins around June 3 and lasts for 1.7 months, ending around July 24. The cloudiest month is January, when it is overcast or mostly cloudy 77% 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 29 · 44%Jun 30 · 17%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan2377
Feb2674
Mar3565
Apr4159
May3961
Jun2377
Jul2674
Aug3763
Sep3268
Oct3961
Nov3862
Dec3169

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 8, brings about 14 h 30 min of light; the shortest, around January 1, only 9 h 30 min — a swing of roughly 5 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan9.77:054:48
Feb10.66:445:19
Mar11.76:055:48
Apr12.95:196:16
May14.04:446:42
Jun14.54:317:03
Jul14.34:437:02
Aug13.45:086:34
Sep12.35:345:48
Oct11.06:015:03
Nov10.06:334:32
Dec9.56:594:27

Sunny days

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

Myoko averages about 5 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 2 and 9 days.

The sunnier stretch runs 2.9 months, from around Mar 11 to Jun 7. The sunniest month is April, with roughly 8 sunny days (mixed).

The greyest month is January, down near 2 sunny days — about 74% fewer than the April peak.

051015JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedApr 299 daysJan 182 days
Sunny daysSky
Jan2Gloomy
Feb3Gloomy
Mar6Gloomy
Apr8Mixed
May8Gloomy
Jun4Gloomy
Jul4Gloomy
Aug6Gloomy
Sep5Gloomy
Oct6Gloomy
Nov6Gloomy
Dec4Gloomy

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 Myoko, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 3.7 months, from around June 10 to September 29. The muggiest month is August, when the air feels humid, muggy or worse about 98% of the time.

The most comfortable stretch runs from around September 30 to June 9, and April 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%JanFebMarAprMayJunJulAugSepOctNovDecApr 13 · 100%Aug 1 · 0%oppressivemuggyhumiddrycomfortablecomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan1000000
Feb1000000
Mar1000000
Apr991000
May8414200
Jun223431130
Jul04205521
Aug02124739
Sep132329296
Oct7320610
Nov991000
Dec1000000

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.

Across the year, average wind speed in Myoko is typically calm, near 7 km/h, and varies little with the seasons.

The windier part of the year lasts 6.3 months, from around Nov 4 to May 13. The windiest month is January, averaging about 8 km/h (calm).

The calmer part of the year runs from around May 14 to Nov 3, with July the calmest month at about 5 km/h.

051015JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeJan 1 · 8 km/hJul 19 · 5 km/h
Wind speed (km/h)Feels
Jan8calm
Feb8calm
Mar8calm
Apr8calm
May7calm
Jun6calm
Jul5calm
Aug5calm
Sep6calm
Oct7calm
Nov7calm
Dec8calm

Hazard calendar for Myoko

In seasonPeak

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

Myoko 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

Best time to visit Myoko

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid October, Myoko 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 time of year to visit Myoko for general outdoor tourist activities is from late April to late October, with a peak score in the first week of June.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationJun 1 · 5.9

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
Jan0.0poor
Feb0.0poor
Mar0.7poor
Apr3.4poor
May5.5good
Jun5.4fair
Jul4.8fair
Aug4.8fair
Sep5.3fair
Oct4.8fair
Nov2.5poor
Dec0.3poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Myoko for hot-weather activities is from mid July to mid September, with a peak score in the first week of August.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationAug 4 · 5.5

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 Myoko, 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 28°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 3°C), pack a warm layer, a heavy coat and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In August, Myoko sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

Sea temperature near Myoko

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 16 km away) is warmest in August at about 27°C and coldest in March near 10°C.

It's comfortable for a long swim from Jun 20 to Nov 1 — about 4.4 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan13Bracing
Feb11Bracing
Mar10Bracing
Apr11Bracing
May15Bracing
Jun20Cool
Jul23Refreshing
Aug27Warm
Sep25Warm
Oct22Refreshing
Nov19Cool
Dec15Cool

UV index (midday) in Myoko 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 Myoko peaks around August 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateAug 12UV 10Jan 1UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug10Very high
Sep9Very high
Oct5High
Nov3Moderate
Dec2Moderate

Average hourly UV index in Myoko

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 August 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
Feb2.50
Mar4.50
Apr6.52
May7.54.5
Jun85
Jul85.5
Aug85.5
Sep74.5
Oct50
Nov00
Dec00

Air quality in Myoko 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 Myoko is worst in April — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (December, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1721 µg/m³Dec 1510 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb14Moderate
Mar20Moderate
Apr21Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug13Moderate
Sep12Good
Oct11Good
Nov11Good
Dec10Good
Almanac & agriculture

Growing season

Chance of a frost-free dayTypical season (≥50%)

The growing season in Myoko typically lasts about 261 days, from around March 23 to December 8 — the span where a frost-free day is more likely than not. It is reliably frost-free from April 15 to November 16.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecgrowing seasonFeb 1210%Mar 2350%Apr 1590%Nov 1690%Dec 850%Jan 1710%
Frost-free chance (%)Frost nights
Jan1131
Feb1328
Mar4231
Apr8813
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov8913
Dec3731

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. Myoko banks about 1,726 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar0
Apr11
May151
Jun275
Jul406
Aug441
Sep307
Oct132
Nov3
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.

Myoko receives about 4.0 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 2.0 and 5.8 kWh/m².

The brighter stretch of the year lasts 6.3 months, from around Mar 6 to Sep 12. The brightest month is May, averaging about 5.7 kWh/m² (bright).

The dimmest month is December, down near 2.1 kWh/m² — roughly 64% less than the May peak.

01234567JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseMay 275.8 kWhDec 112.0 kWh
Solar energy (kWh/m²)Level
Jan2.4Moderate
Feb3.2Moderate
Mar4.4Bright
Apr5.3Bright
May5.7Bright
Jun5.3Bright
Jul4.9Bright
Aug5.0Bright
Sep3.9Moderate
Oct3.1Moderate
Nov2.3Moderate
Dec2.0Moderate

Where is Myoko?

Myoko sits at 37.0°N, 138.3°E, 79 m above sea level, in Japan. The nearest listed city is Arai, 4.0 km away.

Topography around Myoko

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

Within 3 km, the terrain around Myoko has significant variations in elevation — a maximum elevation change of 317 m around an average of 100 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,556 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,978 m.

The land around Myoko is covered by trees (39%), cropland (34%) and artificial surfaces (20%) within 3 km, trees (74%) within 16 km, and trees (60%) and water (29%) within 80 km.

3 km
317 m
16 km
1,556 m
80 km
2,978 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Arai 4.0 km · Jōetsu 14 km · Iiyama 22 km · Nakano 32 km · Itoigawa 36 km · Suzaka 42 km · Nagano 42 km · Kashiwazaki 46 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 Myoko (37.0253°, 138.2556°, 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).