Best year time to visit Isa

General weather information about Isa

Average annual temperature is 16.6 °C

Absolute maximum temperature: 33.6 °C

Absolute minimum temperature: -5.1 °C

Number of sunny days: 140

Number of rainy days: 222

Number of snow days: 3

Average annual precipitation: 2398 mm

Look at detailed online map of Isa

* Weather data for Isa Japan is based on climate observations for 2023 year

Isa air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 20.3 19.3 22.6 24.5 29.3 30.6 33.5 33.6 32.1 28.5 25.5 20.2
Average daytime temperature (°C) 10.1 13.1 17.6 20.3 24 26.5 30 30.9 29.8 22.7 17.6 12.3
Average temperature (°C) 5.7 8.1 12.2 15.4 19.1 22.4 26 26.5 25 17.2 12.9 8
Average night temperature (°C) 2.6 4.2 7.9 11.3 15.2 19.4 23.5 23.6 21.7 12.9 9.3 4.6
Absolute minimum temperature (°C) -5.1 -2.1 -0.7 3.8 8.3 16 21.4 21.6 18.9 8.4 2.8 -3.5

Isa monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.6 11.5 12.5 13.4 14.1 14.3 14.2 13.7 12.8 11.9 10.9 10.2
Daylight mean duration (h) 10.3 11.1 12 13 13.8 14.2 14 13.3 12.4 11.4 10.5 10.1
Daylight minimum duration (h) 10.1 10.7 11.5 12.5 13.4 14.1 13.7 12.9 11.9 10.9 10.2 10.1
Sunshine mean duration (h) 6.8 7 7.8 8.1 8.8 7.2 8.8 10.2 9.8 8.6 8 6.4
Precipitation (mm) 87 159 168 251 278 539 284 280 97 78 61 117
Sunny days 15 15 17 13 14 6 1 2 4 19 18 16
Rainy days 15 13 14 17 17 24 30 29 26 12 12 13
Snow days 1 2

Isa - weather forecast by months

January February March April May June July August September October November December

Best time to visit Isa:

The largest precipitation sum in Isa is at

  • April — 251(mm)
  • May — 278(mm)
  • June — 539(mm)
  • July — 284(mm)
  • August — 280(mm)

Weather forecast in the closest to Isa admin centers