Last updated: August 23, 2025
In September, the average temperature in Okawara, Japan hovers around 21°C (70°F), creating a pleasant climate. You can expect temperatures to range from a chilly 10°C (50°F) to a warm 32°C (91°F). Additionally, the area sees about 173 mm (6.8 in) of precipitation spread over 14 days, contributing to an average humidity level of 84%. Whether you're preparing for a sun-soaked day or a cozy evening, Okawara in September has something for everyone!
In September in Okawara, the average temperature is 21°C (70°F). Maximums can reach 32°C (91°F) and minimums can be as low as 10°C (50°F). This makes it an ideal time for travelers to enjoy mild weather while exploring the beautiful surroundings.
In Okawara in September, the precipitation amount is 173 mm (6.8 in) during a span of 14 days.
In Okawara in September, humidity is 84%. With an average temperature of 21°C (70°F), this humidity feels like thick, warm air wrapping around you, making outdoor activities quite uncomfortable and necessitating frequent hydration breaks for a more enjoyable travel experience.
In Okawara in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Okawara.
UV Risk Categories
Weather in Okawara varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Okawara, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 58 mm (2.3 inches) | 76% | moderate |
| February Weather | 2°C (36°F) | 46 mm (1.8 inches) | 75% | moderate |
| March Weather | 6°C (43°F) | 112 mm (4.4 inches) | 72% | high |
| April Weather | 10°C (50°F) | 109 mm (4.3 inches) | 73% | very high |
| May Weather | 16°C (61°F) | 116 mm (4.6 inches) | 80% | very high |
| June Weather | 19°C (66°F) | 105 mm (4.1 inches) | 87% | very high |
| July Weather | 23°C (74°F) | 252 mm (9.9 inches) | 92% | extreme |
| August Weather | 25°C (77°F) | 203 mm (8.0 inches) | 90% | very high |
| September Weather | 21°C (70°F) | 173 mm (6.8 inches) | 84% | very high |
| October Weather | 15°C (60°F) | 233 mm (9.2 inches) | 80% | high |
| November Weather | 10°C (49°F) | 37 mm (1.5 inches) | 77% | moderate |
| December Weather | 4°C (39°F) | 59 mm (2.3 inches) | 77% | moderate |