Climate Change Chart of Sihanoukville, Cambodia

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.27 °C. This is an unweighted comparison of monthly means, not a day-weighted annual average, and it describes the aggregate rather than a change in every month; these monthly means also are not daytime maximum temperatures. The largest monthly increase occurred in May, with a difference of +1.68 °C. That identifies the strongest increase among the reported monthly changes, not a uniform shift across the year.

Changes in rainfall

Mean daily rainfall, averaged across calendar months, had a difference of -0.54 mm/day. This unweighted mean of monthly means describes an aggregate rather than every month, and the measure is daily rainfall, not a monthly total. The largest monthly decrease was in September, where the difference was -2.99 mm/day. In contrast, November recorded the largest monthly increase, with a difference of +1.12 mm/day; these extrema show that monthly changes did not all move in the same direction.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.26 hours/day. This is an unweighted aggregate of monthly means, not a day-weighted annual average, so it does not imply the same change in each month. The largest monthly decrease occurred in July, with a difference of -0.72 hours/day. The largest increase was in April, where the difference was +0.23 hours/day, indicating contrasting monthly changes rather than a uniform shift throughout the calendar.