Climate Change Chart of Phuket, Thailand

Overview of climate changes

Temperature changes

Across calendar months, the unweighted mean difference in monthly mean temperature was an increase of +1.18 °C compared with the earlier reference period; this summarizes monthly means rather than daytime maximum temperatures and does not imply the same change in every month. The largest monthly increase was in April, with a difference of +1.47 °C. This identifies the strongest increase among the supplied monthly temperature differences, not a continuous change over time.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -1.72 mm/day compared with the earlier reference period. This is an unweighted summary of monthly means, not a day-weighted annual average or a monthly rainfall total. The largest monthly decrease in mean daily rainfall occurred in September, with a difference of -5.31 mm/day. The largest increase was in November, where the difference was +2.18 mm/day; these contrasting monthly changes show why the overall mean difference should not be read as applying to every month.

Changes in sunshine duration

The unweighted mean difference in daily sunshine duration, averaged across calendar months, was an increase of +0.10 hours/day compared with the earlier reference period. This describes the aggregate of monthly means, not every month's daily sunshine or a day-weighted annual average. Monthly differences varied: the largest increase in mean daily sunshine was in September, at +0.76 hours/day, while the largest decrease was in November, at -0.74 hours/day. These are comparisons of daily averages for those months, rather than measures of individual-day conditions.