Kawaguchi Temperature by Month

The average annual maximum temperature in Kawaguchi, Saitama, Japan is 21°C (70°F), with daytime highs ranging from 10°C (50°F) in January to 32°C (90°F) in August. This page covers monthly averages, day-night differences, and how Kawaguchi compares to cities worldwide.

Visitors to Kawaguchi can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 25°C (77°F) in August to 1°C (34°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Kawaguchi 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:

Kawaguchi's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:

Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.

Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate, hot dry summers and mild wet winters.

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 Kawaguchi this rarely lasts long on the ground.

For more on Kawaguchi's weather, including monthly rainfall, sunshine hours, and humidity, visit our Kawaguchi climate page.