Climate Change Chart of Hội An, Viet Nam

Overview of climate changes

Changes in rainfall

Averaged across calendar months, mean daily rainfall showed a difference of +1.89 mm/day. This is an unweighted comparison of monthly means and describes daily average amounts rather than monthly rainfall totals. The largest monthly increase occurred in September, with a difference of +6.55 mm/day in mean daily rainfall. By contrast, March had the largest monthly decrease, at -0.20 mm/day; these two extremes do not describe the pattern in every month.

Temperature changes

Averaged across calendar months, the difference in monthly mean temperature was +0.35 °C; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in May, at +1.45 °C, while the largest monthly decrease was in December, at -0.95 °C. These are the extremes among the reported monthly differences, not evidence that every month changed in the same direction.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.99 hours/day. This unweighted comparison of monthly means summarizes average daily hours across the calendar months, rather than a day-weighted annual figure. The largest monthly decrease was in December, with a difference of -2.32 hours/day in mean daily sunshine duration. That monthly extreme does not establish that sunshine declined in every month.