Ski resort Ski resort · Japan

Best time to visit Koshi Kogen Ski Resort

The colour shows how good it gets. Tap a card to see that kind of trip at its best time of year; your own preferences stay as they are.

The best time to visit Koshi Kogen Ski Resort is May, with daytime temperatures around 23°C.

Koshi Kogen Ski Resort at a glance: warmest in August with daytime temperatures around 31°C and coolest in January (5°C). The wettest month is December (226 mm) and the driest April (89 mm), with about 1,890 mm of rain a year. The sea is warmest in August (28°C). Sunniest in April.

Loading climate data…

Koshi Kogen Ski Resort

230 m
Pleasantly warm and rainy
55
23°/11°15°100 mm35 %14 h
JanFebMarAprMayJunJulAugSepOctNovDec
A typical mid-May in Koshi Kogen Ski Resort
Sunny 9Sun & showers 1Cloudy 6Rain 14
Daytime temperature (night ☾)
11°18°27°−5°37°
Sea temperature
15°−5°37°
Daylight (solar time)
04:5319:07
0006121824
14 h 14 m
Precipitation
0230 mm
100 mm
Air feel
FreshComfortableHumidMuggy
RH 65 %

Open on the world map

The climate in Koshi Kogen Ski Resort through the year

When to go

No month in Koshi Kogen Ski Resort reaches a good score (65 or more) with the default preferences. May comes closest with 55 out of 100. A typical May day reaches 23°C and the night falls to 11°C, with rain on about 18 days and clear sky 35 % of the time. June and October are a fair alternative, with scores of 51–52. The lowest score is in January (14), when days are cool at around 5°C.

Seasons and rain

The seasons are sharply different: a August day (31°C) is about 27 degrees warmer than a January day (5°C). Nights typically drop below freezing in December–March. Precipitation is spread evenly over the year, from 89 mm in April to 226 mm in December (about 1,890 mm in all). The air feels muggy in July and August. Snow typically lies on the ground in December–March, deepest in February (about 60 cm).

Sea and daylight

The sea is 22°C or warmer in July–October, peaking at 28°C in August. It is coldest in March (10°C). Daylight lasts from about 9.5 hours in December to 14.5 hours in June.

By type of trip

The best months change with what you want to do. Each of Eddigo’s trip types has its own preferred daytime temperature and its own weights for rain, humidity and sun. Koshi Kogen Ski Resort scores 65 or more in these months:

  • Cooler weather (10–20 °C): March–May and October–December, up to 81

How it compares

Of the 191 destinations Eddigo covers in Japan, Koshi Kogen Ski Resort is the 32nd warmest over the year and the 23rd wettest. In May, when Koshi Kogen Ski Resort scores 55, Muica Snow Resort (28 km away) scores 55 and Matsudai Family Ski Resort (33 km away) scores 56. See where to go in May for the best destinations that month.

Month by month

MonthScoreDayNightSeaRainWet days (≥ 1 mm)SunDaylightFeels like
January145°−3°13°192 mm2225 %10 hCold and snowy
February146°−3°11°105 mm1825 %11 hChilly, snowy and grey
March1411°0°10°111 mm1928 %12 hChilly and rainy
April4718°5°12°89 mm1441 %13 hMild and showery
May5523°11°15°100 mm1535 %14 hPleasantly warm and rainy
June5226°16°20°140 mm1623 %15 hWarm, rainy and grey
July3230°21°25°223 mm2019 %14 hHot, rainy and muggy
August2831°22°28°186 mm1936 %14 hHot, rainy and muggy
September4927°17°26°188 mm1825 %12 hWarm and rainy
October5121°10°22°167 mm1726 %11 hPleasantly warm and rainy
November2714°5°19°165 mm1934 %10 hMild and rainy
December158°−1°15°226 mm2531 %10 hChilly and rainy

The score (0–100) is calculated from a range of variables, and changes with your preferences.

Climate averages 2016–2025 (ERA5, CRU TS). Sea temperature from ERA5. Not a forecast. Elevation: 232 m. Coordinates: 37.32, 138.89.