Numazu Temperature by Month
The average annual maximum temperature in Numazu, Shizuoka, Japan is 19°C (66°F), with daytime highs ranging from 10°C (50°F) in January to 29°C (84°F) in August. This page covers monthly averages, day-night differences, and how Numazu compares to cities worldwide.
Numazu Monthly Temperatures
Visitors to Numazu can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 23°C (73°F) in August to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Numazu by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. August, the warmest month of the year, receives 165 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Numazu 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.
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Numazu vs World: Temperature Compared
Numazu's average annual maximum temperature is 19°C (66°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.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Numazu?
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 Numazu, January is the coolest month, with average highs of 10°C (50°F) and humidity around 62% — considered high. In August, the warmest month, temperatures average 29°C (84°F) with 80% humidity — conditions that feel very 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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Numazu this rarely lasts long on the ground.
For more on Numazu's weather — including monthly rainfall, sunshine hours, and humidity — visit our Numazu climate page.
