Last updated: August 23, 2025
In September, the average temperature in Rikubetsu, Japan hovers around 15°C (59°F). Expect a range from a chilly 2°C (35°F) to a warm 29°C (84°F). Be prepared for some rain, with 93 mm (3.6 in) of precipitation expected over 11 days, and don't forget the high level of humidity at 89%!
In September in Rikubetsu, the average temperature is 15°C (59°F). Maximum temperatures can reach 29°C (84°F), while minimum temperatures can be as low as 2°C (35°F). This diverse temperature range makes Rikubetsu an ideal destination for travelers seeking both warm and cool experiences.
In Rikubetsu in September, the precipitation amount is 93 mm (3.6 in) over the course of 11 days.
In Rikubetsu in September humidity is 89%. With an average temperature of 15°C (59°F), this humidity feels like a damp blanket enveloping you, making even short walks feel heavy and sluggish, while creating a sense of heaviness in the air that can dampen the joy of exploring.
In Rikubetsu in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Rikubetsu.
UV Risk Categories
Weather in Rikubetsu varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rikubetsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 50 mm (2.0 inches) | 84% | low |
| February Weather | -8°C (18°F) | 49 mm (1.9 inches) | 83% | moderate |
| March Weather | -2°C (29°F) | 88 mm (3.5 inches) | 83% | high |
| April Weather | 4°C (40°F) | 78 mm (3.1 inches) | 83% | very high |
| May Weather | 11°C (51°F) | 90 mm (3.6 inches) | 86% | very high |
| June Weather | 14°C (57°F) | 104 mm (4.1 inches) | 88% | very high |
| July Weather | 18°C (65°F) | 83 mm (3.3 inches) | 93% | very high |
| August Weather | 18°C (65°F) | 147 mm (5.8 inches) | 96% | very high |
| September Weather | 15°C (59°F) | 93 mm (3.6 inches) | 89% | very high |
| October Weather | 9°C (49°F) | 136 mm (5.4 inches) | 83% | moderate |
| November Weather | 3°C (37°F) | 77 mm (3.0 inches) | 80% | moderate |
| December Weather | -5°C (24°F) | 52 mm (2.1 inches) | 79% | low |