| < May >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Karuizawa in May is quite mild at 11.5 °C (52.7 °F).
- Afternoons can be somewhat warm with average high temperatures reaching 18.2 °C (64.8 °F).
- Overnight temperatures are generally cool with an average low of 5 °C (41 °F).
- The variation/ range of diurnal mean temperatures in May is 13.2 °C (23.8 °F).
- The weather in May is not exactly parched. Circa 108.8mm (4.3in) of water is discharged.
- The shortest day is 13:39 long and the longest day is 14:26 long with an average length of 14:05.
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Weather Trend Graph for May in Karuizawa, Japan
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