How hot/cold does it get in Japan?

The temperature and weather really depends on the month, the season and also the year (like any country!).  Obviously, it also depends on the region, prefecture, city, etc.  Find below a comprehensive chart of the average temperatures and weather patterns of overall Japan from Climate Temp Info. Postings of information in °F and graphs are also available.

  Avg. MIN temp (°C) Avg. MAX temp (°C) Avg.  temp (°C) Avg. rainfall (mm) Wet days (>0.1 mm) Avg. sunlight hrs/day Relative humidity Avg. wind speed (beaufort)
Jan -1 9 4 48 6 6.0 60 3
Feb 0 10 5 73 7 5.9 60 3
Mar 3 13 8 101 10 5.7 63 3
Apr 9 18 14 135 11 6.0 68 3
May 14 22 18 131 12 6.2 73 3
Jun 18 25 22 182 12 5.0 79 3
Jul 22 29 26 146 11 5.8 80 3
Aug 23 31 27 147 10 6.6 79 3
Sep 20 27 24 217 13 4.5 79 3
Oct 13 21 17 220 12 4.4 77 3
Nov 7 16 12 101 8 4.8 71 2
Dec 2 12 7 61 5 5.5 65 2

Other sites to check out would be: Japan Guide which shows averages for 6 major cities and also has some interesting info about "When to Travel Japan", and BBC which lists averages for Tokyo and has other useful information as well!

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