Best year time to visit Iiyama

General weather information about Iiyama

Average annual temperature is 13.3 °C

Absolute maximum temperature: 36.9 °C

Absolute minimum temperature: -7.8 °C

Number of sunny days: 103

Number of rainy days: 240

Number of snow days: 22

Average annual precipitation: 2192 mm

Look at detailed online map of Iiyama

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

Iiyama air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 12.8 10.5 20.9 24.9 30.3 28.5 32.3 36.9 35.3 23.7 24.5 16.6
Average daytime temperature (°C) 4.4 4.5 12.2 17.1 20.6 24.2 28.8 33.8 28.8 19 14.7 8.6
Average temperature (°C) 0.8 1.6 6.7 11.2 15.2 19.9 24.4 27.7 23.6 13.7 9.4 4.2
Average night temperature (°C) -2.1 -1 2.4 6.6 10.8 16.3 20.5 23.2 19.9 9.2 5.3 -0.3
Absolute minimum temperature (°C) -7.5 -5 -3 0.8 1.5 10.7 17.1 20.7 13.7 5.5 -1 -7.8

Iiyama monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.3 11.3 12.6 13.7 14.5 14.7 14.7 14 13 11.8 10.7 9.8
Daylight mean duration (h) 10 10.8 12 13.2 14.1 14.7 14.4 13.6 12.4 11.3 10.2 9.7
Daylight minimum duration (h) 9.7 10.4 11.4 12.6 13.7 14.5 14.1 13 11.9 10.7 9.9 9.6
Sunshine mean duration (h) 5.5 6.6 8.2 8.5 9.4 8 9.8 11.5 8.8 8.8 7 6.7
Precipitation (mm) 289 214 109 152 182 211 163 22 146 126 224 353
Sunny days 5 5 15 13 13 4 10 9 5 10 9 5
Rainy days 14 15 16 17 18 26 21 22 25 21 21 24
Snow days 12 8 2

Iiyama - weather forecast by months

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

Best time to visit Iiyama:

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

  • August — 11.5(h)

The largest precipitation sum in Iiyama is at

  • January — 289(mm)
  • December — 353(mm)

Weather forecast in the closest to Iiyama admin centers