Last updated: August 23, 2025
In Nishi-Tokyo-shi, Japan during September, the average temperature hovers around 23°C (74°F), with a minimum dipping to 13°C (55°F) and a scorching maximum reaching 36°C (97°F). Expect 201 mm (7.9 in) of precipitation over 19 days, contributing to a high average humidity of 86%.
In September in Nishi-Tokyo-shi, the average temperature is 23°C (74°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 13°C (55°F). This makes it an ideal time for travelers to enjoy outdoor activities while being prepared for varying weather conditions.
In Nishi-Tokyo-shi in September, the total precipitation amount reaches 201 mm (7.9 in) over the course of 19 days.
In Nishi-Tokyo-shi in September, humidity is 86%. With an average temperature of 23°C (74°F), this humidity feels like you're stepping into a warm embrace, making travel a bit sticky yet invigorating, as the air wraps around you, inviting you to explore while reminding you to stay hydrated.
In Nishi-Tokyo-shi in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Nishi-Tokyo-shi.
UV Risk Categories
Weather in Nishi-Tokyo-shi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nishi-Tokyo-shi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 4°C (40°F) | 47 mm (1.8 inches) | 76% | moderate |
| February Weather | 6°C (42°F) | 50 mm (2.0 inches) | 74% | moderate |
| March Weather | 10°C (50°F) | 144 mm (5.7 inches) | 70% | very high |
| April Weather | 14°C (57°F) | 126 mm (5.0 inches) | 74% | very high |
| May Weather | 19°C (67°F) | 117 mm (4.6 inches) | 81% | extreme |
| June Weather | 22°C (72°F) | 168 mm (6.6 inches) | 88% | extreme |
| July Weather | 26°C (79°F) | 252 mm (9.9 inches) | 93% | extreme |
| August Weather | 28°C (82°F) | 133 mm (5.3 inches) | 90% | extreme |
| September Weather | 23°C (74°F) | 201 mm (7.9 inches) | 86% | very high |
| October Weather | 18°C (64°F) | 291 mm (11.4 inches) | 83% | high |
| November Weather | 12°C (55°F) | 69 mm (2.7 inches) | 80% | moderate |
| December Weather | 7°C (44°F) | 55 mm (2.2 inches) | 78% | moderate |