Weather in Jōmon in August

General weather information about Jōmon

Average annual temperature is 6.3 °C

Absolute maximum temperature: 31.8 °C

Absolute minimum temperature: -20.0 °C

Number of sunny days: 108 days

Number of rainy days: 195 days

Number of snow days: 62 days

* Weather data for Jōmon Japan is based on climate observations for 2026 year

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	3.8	6.1	11.3	18.3	24.7	28.4	31.3	31.8	26.5	21.6	18.0	8.7
Average daytime temperature (°C)	-6.4	-4.4	4.9	10.1	16.4	21.2	24.4	25.9	21.7	13.8	6.8	-1.9
Average temperature (°C)	-10.8	-8.5	-0.1	4.8	10.4	15.8	19.8	21.5	17.1	8.6	2.6	-6.4
Average night temperature (°C)	-14.7	-12.1	-4.5	0.7	5.1	11.1	15.6	18.2	13.2	4.4	-1.1	-10.8
Absolute minimum temperature (°C)	-19.0	-18.9	-11.5	-8.2	-2.5	3.7	9.0	13.5	5.8	-1.2	-12.4	-20.0

The best time to visit Jōmon during the most sunny months:

Months with the longest average daylight duration in Jōmon:

The largest precipitation sum in Jōmon is at

June — 168(mm)

August — 140(mm)

September — 160(mm)

When is the best time to visit Jōmon?

The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Jōmon.

What is the weather like in Jōmon?

See average temperature, rainfall and daylight hours for Jōmon by month in the table above.

How many sunny days does Jōmon have?

The monthly weather statistics above show sunshine and rainfall patterns for Jōmon throughout the year.