Last updated: August 23, 2025
In Rankoshimachi, Japan, the average temperature in December hovers around -2°C (28°F), with a notable minimum dipping to -13°C (8°F) and a maximum reaching 11°C (52°F). During this month, residents can expect about 116 mm (4.6 in) of precipitation spread over 26 days, contributing to an average humidity level of 80%. Embrace the chill and prepare for a wet, cool climate!
In December in Rankoshimachi, the average temperature is -2°C (28°F), with a maximum that can reach 11°C (52°F) and a minimum that can drop as low as -13°C (8°F). Be sure to pack warm clothing and prepare for a mix of chilly and potentially milder days while exploring.
In Rankoshimachi in December, the precipitation amount is 116 mm (4.6 in) over the course of 26 days.
In Rankoshimachi in December, humidity is 80%. With an average temperature of -2°C (28°F), this humidity feels like a sharp, biting chill that seeps into your bones, making outdoor exploration uncomfortable and necessitating extra layers to ward off the damp cold.
In Rankoshimachi in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rankoshimachi, you can visit Hourly UV Index in Rankoshimachi.
UV Risk Categories
Weather in Rankoshimachi varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rankoshimachi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (24°F) | 74 mm (2.9 inches) | 84% | low |
| February Weather | -4°C (25°F) | 81 mm (3.2 inches) | 83% | moderate |
| March Weather | 1°C (33°F) | 93 mm (3.7 inches) | 81% | high |
| April Weather | 5°C (41°F) | 89 mm (3.5 inches) | 81% | high |
| May Weather | 11°C (52°F) | 84 mm (3.3 inches) | 86% | very high |
| June Weather | 15°C (59°F) | 110 mm (4.3 inches) | 87% | very high |
| July Weather | 20°C (68°F) | 100 mm (3.9 inches) | 93% | very high |
| August Weather | 21°C (69°F) | 147 mm (5.8 inches) | 95% | very high |
| September Weather | 18°C (64°F) | 131 mm (5.2 inches) | 88% | very high |
| October Weather | 11°C (53°F) | 127 mm (5.0 inches) | 83% | moderate |
| November Weather | 5°C (41°F) | 136 mm (5.4 inches) | 79% | moderate |
| December Weather | -2°C (28°F) | 116 mm (4.6 inches) | 80% | low |