Last updated: August 23, 2025
In December, the average temperature in Kamiiso, Japan hovers around 2°C (35°F). Be prepared for chilly days, as temperatures can dip to a minimum of -7°C (20°F), while reaching a maximum of 14°C (57°F). Expect 89 mm (3.5 in) of precipitation over about 18 days, resulting in a 77% average humidity, creating a crisp and damp atmosphere.
In December in Kamiiso, the average temperature is 2°C (35°F). The maximum can reach 14°C (57°F), while the minimum can drop as low as -7°C (20°F). Be prepared for chilly weather and pack accordingly for your trip!
In Kamiiso in December, the precipitation amount is 89 mm (3.5 in) accumulated over 18 days.
In Kamiiso in December humidity is 77%. With an average temperature of 2°C (35°F), this humidity feels like a heavy blanket against the skin, making outdoor activities feel far chillier than the thermometer suggests, which can be quite challenging for traveling.
In Kamiiso 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 Kamiiso, you can visit Hourly UV Index in Kamiiso.
UV Risk Categories
Weather in Kamiiso varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Kamiiso, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 61 mm (2.4 inches) | 79% | low |
| February Weather | -1°C (30°F) | 79 mm (3.1 inches) | 78% | moderate |
| March Weather | 3°C (38°F) | 86 mm (3.4 inches) | 77% | moderate |
| April Weather | 7°C (45°F) | 101 mm (4.0 inches) | 78% | very high |
| May Weather | 11°C (52°F) | 116 mm (4.6 inches) | 86% | very high |
| June Weather | 15°C (59°F) | 128 mm (5.0 inches) | 91% | very high |
| July Weather | 19°C (67°F) | 152 mm (6.0 inches) | 95% | very high |
| August Weather | 21°C (71°F) | 254 mm (10.0 inches) | 97% | extreme |
| September Weather | 20°C (68°F) | 166 mm (6.5 inches) | 89% | very high |
| October Weather | 15°C (58°F) | 149 mm (5.9 inches) | 81% | high |
| November Weather | 8°C (47°F) | 103 mm (4.1 inches) | 78% | moderate |
| December Weather | 2°C (35°F) | 89 mm (3.5 inches) | 77% | low |