Last updated: August 23, 2025
In May, the average temperature in Ono-hara, Japan hovers around 19°C (66°F), making it a mild time of the year. Expect temperatures to dip as low as 7°C (45°F) at night, while daytime highs can reach up to 28°C (83°F). With an average precipitation amount of 136 mm (5.4 in) spread over 9 days, rainfall is common, contributing to an average humidity level of 84%. Plan accordingly to make the most of your visit!
In May in Ono-hara, the average temperature is 19°C (66°F). The maximum can reach 28°C (83°F), and the minimum can be as low as 7°C (45°F). This mild climate makes Ono-hara an ideal destination for outdoor activities and sightseeing during this time of year.
In Ono-hara in May, the precipitation amount is 136 mm (5.4 in) over a span of 9 days.
In Ono-hara in May, humidity is 84%. With an average temperature of 19°C (66°F), this humidity feels like a warm, sticky embrace that can make traveling uncomfortable and exhausting, as the air clings to your skin, and every step taken feels heavier in the sultry atmosphere.
In Ono-hara in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Ono-hara.
UV Risk Categories
Weather in Ono-hara varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Ono-hara, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (42°F) | 49 mm (1.9 inches) | 76% | moderate |
| February Weather | 6°C (43°F) | 69 mm (2.7 inches) | 72% | moderate |
| March Weather | 10°C (50°F) | 125 mm (4.9 inches) | 69% | very high |
| April Weather | 14°C (58°F) | 137 mm (5.4 inches) | 75% | extreme |
| May Weather | 19°C (66°F) | 136 mm (5.4 inches) | 84% | extreme |
| June Weather | 22°C (72°F) | 181 mm (7.1 inches) | 88% | extreme |
| July Weather | 26°C (79°F) | 386 mm (15.2 inches) | 95% | extreme |
| August Weather | 28°C (82°F) | 256 mm (10.1 inches) | 93% | extreme |
| September Weather | 24°C (75°F) | 237 mm (9.3 inches) | 84% | very high |
| October Weather | 19°C (66°F) | 172 mm (6.8 inches) | 79% | high |
| November Weather | 13°C (55°F) | 37 mm (1.5 inches) | 76% | high |
| December Weather | 7°C (46°F) | 61 mm (2.4 inches) | 75% | moderate |