Will it rain in Prefektur Yamanashi?
An hour counts as rainy when the chance of rain is at least 50% or forecast rainfall is at least 0.2 mm.
⏱️ Next 12 hours · Prefektur Yamanashi
Rain likely
Rain may start around 16.00 — take an umbrella.
- Starts
- 16.00
- Highest chance
- 100%
- Total rainfall
- 8,8 mm
- Rainy hours
- 11/12
Chance of rain by the hour
Taller bar = higher chance · rainy hours are highlighted
- 16.00100%
- 17.00100%
- 18.00100%
- 19.0094%
- 20.0085%
- 21.0076%
- 22.0069%
- 23.0062%
- 00.0057%
- 01.0054%
- 02.0053%
- 03.0049%
Staying dry
- Umbrella from 50%At a 50% chance or more, take an umbrella or a light raincoat.
- Check the radar firstRadar shows where rain clouds are and where they are heading over the next 1–2 hours.
- Avoid open ground in stormsIn thunderstorms, keep away from tall trees, open ground and water; get into a solid building.
- Rain forecasts change fastSummer showers are hard to time exactly — check again before you head out.
Rain forecast FAQ
What does a “40% chance of rain” mean?
It is the model's probability of measurable rain at that spot in that hour. 40% does not mean rain for 40% of the time or area — just that 4 in 10 similar forecasts bring rain.
How does this page decide it will rain?
An hour counts as rainy at a chance of at least 50% or forecast rainfall of at least 0.2 mm. The answer is “Rain likely” when at least one of the next 12 hours reaches that.
How much rain is heavy rain?
Under 1 mm/h is light, 1–4 mm/h moderate, over 4 mm/h heavy; over 50 mm a day can cause local flooding.