Ota Temperature by Month
The average annual maximum temperature in Ota, Gunma, Japan is 20°C (68°F), with daytime highs ranging from 9°C (48°F) in January to 31°C (88°F) in August. This page covers monthly averages, day-night differences, and how Ota compares to cities worldwide.
Ota Monthly Temperatures
The weather in Ota experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 23°C (73°F) in August to -1°C (30°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Ota by month:
From around 4 AM to 6 AM temperatures are at their lowest; by 3 PM they've climbed to their daily peak. August, the warmest month, averages 185 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Ota 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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Ota vs World: Temperature Compared
Ota's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Ota's weather — including monthly rainfall, sunshine hours, and humidity — visit our Ota climate page.
