13 to 30°C
temperature
2699 hours
sunshine per day
1076 mm
rain
171 days
dry
194 days
rain
0 days
snow

Climate of Iōjima

The island Iōjima has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Iōjima is 40° degrees and there is about 424 inch of rain in a year. It is dry for 130 days a year with an average humidity of 76% and an UV-index of 5.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 13°C and 30°C
  • Night:the average nighttime temperature is between 10°C and 27°C
  • Rain: it rains 194 days and there is a total of approximately 1076 mm rainfall
  • Sun hours: throughout the year there are 2699 sun hours
Maximum temperature: between 13°C and 30°C
Warmest month: 30°C in August
Coldest month: 13°C in January
Night temperature: between 10°C and 27°C
Dry days: 171 days
Days with rain: 194 days
Days with snow: 0 days
Total rain sum: 1076 mm
Hours of sunshine: 2699 hours

Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Iōjima.

Precipitation graph

This graph shows the average amount of rainfall per month for Iōjima.

Climate table of Iōjima

In this climate table you can see at a glance what the average weather per month is for Iōjima. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Iōjima might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 55 57 61 67 72 76 83 85 82 75 67 59
Night temp. (°F) 49 51 54 61 67 72 78 81 77 70 62 53
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 16 24 23 22 35 89 52 36 49 25 31 19
Days with rain 17 15 15 14 12 21 20 18 17 13 15 17
Dry days 14 13 16 16 19 9 11 13 13 18 15 14
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 6 7 8 9 8 10 11 9 6 5 5
Wind force (Bft) 4 4 4 4 3 3 3 3 3 4 4 4
UV-index 4 4 4 5 6 6 7 7 6 6 5 3

Best time to visit Iōjima

The best time to visit Iōjima, Japan is April and May, August and October and November. In this period you have a warm temperature and little precipitation. On the island of Iōjima, the warmest month is August with 85°F and the coldest is January with 55°F.

Climate of Iōjima by month

What is the average climate in a given month for Iōjima? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Iōjima weather experiences

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