Climate Change Chart of Phu Quoc, Viet Nam

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.00 °C compared with the earlier reference period. This is an unweighted mean of monthly averages, not a day-weighted annual average, and it does not mean every month warmed by the same amount. November had the largest monthly increase in mean temperature, with a difference of +1.38 °C. This describes the monthly average rather than daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.48 mm/day compared with the earlier reference period. This is an unweighted average of monthly means, not a day-weighted annual figure, and it does not imply that rainfall increased in every month. The largest monthly increase in mean daily rainfall occurred in July, with a difference of +2.75 mm/day. This daily mean is not a monthly rainfall total. By contrast, April recorded the largest monthly decrease, with a difference of -1.30 mm/day in mean daily rainfall. Taken together, these monthly differences show why the overall mean should not be read as a uniform month-by-month change.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration shows a difference of -0.34 hours/day compared with the earlier reference period. This is an unweighted mean of monthly averages, not a day-weighted annual average, and it does not indicate an equal change in each month. The largest monthly decrease in mean daily sunshine occurred in July, with a difference of -1.04 hours/day. The largest increase was in April, at a difference of +0.22 hours/day, so the monthly pattern was not uniform.