Climate Change Chart of Kawasaki, Japan

Overview of climate changes

Temperature changes

The mean difference across calendar months was +0.87 °C compared with the earlier reference period; this is an unweighted summary of monthly mean temperatures, not a day-weighted annual average or a statement that every month was warmer. The largest monthly increase was in March, with a difference of +1.75 °C. These figures describe monthly means rather than daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +1.33 mm/day compared with the earlier reference period. This unweighted summary of monthly means is not a day-weighted annual average, and it does not imply that rainfall increased in every month. The strongest monthly increase was in July, at a difference of +2.86 mm/day, while the largest decrease was in November, with a difference of -0.35 mm/day. These are changes in mean daily amounts, not monthly rainfall totals.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.31 hours/day compared with the earlier reference period. This unweighted summary of monthly means does not describe a day-weighted annual average or indicate the same change in every month. The largest monthly decrease occurred in February, with a difference of -0.67 hours/day; by contrast, November had the largest increase, at a difference of +0.35 hours/day. The figures refer to mean daily sunshine hours.

Changes in snowfall

Averaged across calendar months, mean daily snowfall had a difference of +0.24 mm/day in the more recent period. This is an unweighted summary of monthly means, not a day-weighted annual average, and it does not mean every month changed in the same direction. The largest monthly increase was in February, with a difference of +1.64 mm/day; the largest decrease was in December, at a difference of -0.12 mm/day. These values describe mean daily snowfall rather than monthly totals.