Climate Change Chart of Semarang, Indonesia

Overview of climate changes

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.77 hours/day compared with the earlier reference period. This unweighted average summarizes monthly mean daily hours; it does not mean that sunshine duration decreased in every month. The largest monthly decrease was in December, with a difference of -2.23 hours/day in mean daily sunshine duration. In August, the largest monthly increase was a difference of +0.10 hours/day, showing that the month-to-month differences did not all move in the same direction.

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.68 °C compared with the earlier reference period; this unweighted average summarizes the monthly means rather than a day-weighted annual average, and it does not imply that every month changed by the same amount. The largest monthly increase was in May, with a difference of +1.29 °C. By contrast, November had the largest monthly decrease, at a difference of -0.06 °C; these are changes in monthly mean temperature, not daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +1.24 mm/day compared with the earlier reference period. This is an unweighted average of calendar-month means, not an annual total or a measure of rainfall on every day. The largest monthly increase in mean daily rainfall occurred in December, with a difference of +2.90 mm/day. This identifies the strongest monthly increase in the supplied comparison, rather than a change in monthly rainfall totals.