Yamanashi Temperature by Month
The average annual maximum temperature in Yamanashi, Yamanashi, Japan is 16°C (61°F), with daytime highs ranging from 4°C (39°F) in January to 27°C (81°F) in August. This page covers monthly averages, day-night differences, and how Yamanashi compares to cities worldwide.
Yamanashi Monthly Temperatures
Depending on the time of the year, temperatures range from warm to cold in Yamanashi. Nighttime lows follow the same pattern, ranging from 19°C (66°F) to -6°C (21°F).
The chart below illustrates the average maximum day and minimum night temperatures in Yamanashi by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 201 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Yamanashi vs Japan
The map below shows the annual temperature across Japan. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
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Yamanashi vs World: Temperature Compared
Yamanashi's average annual maximum temperature is 16°C (61°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Yamanashi?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Yamanashi, January is the coolest month, with average highs of 4°C (39°F) and humidity around 64% — considered high. In August, the warmest month, temperatures average 27°C (81°F) with 70% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Yamanashi's weather — including monthly rainfall, sunshine hours, and humidity — visit our Yamanashi climate page.
