Climate Change Chart of Majuro, Marshall Islands

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.77 °C in the more recent period; this is an unweighted mean of monthly averages, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in December, with a difference of +1.03 °C. This identifies the strongest increase among the monthly mean comparisons, rather than implying that every month changed by the same amount.

Changes in rainfall

Mean daily rainfall averaged across calendar months shows a difference of +1.74 mm/day compared with the earlier reference period. This is an unweighted average of monthly means, not a day-weighted annual average or a monthly rainfall total. The largest monthly increase in mean daily rainfall occurred in April, where the difference was +3.15 mm/day. That monthly comparison does not mean the same increase applied throughout the year.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, shows a difference of -0.73 hours/day in the more recent period. This summarizes the monthly averages with equal weighting, rather than describing a day-weighted annual average or the sunshine received on every individual day. The largest monthly decrease in mean daily sunshine duration was in November, with a difference of -1.29 hours/day. It marks the most pronounced monthly decrease in the comparison, not a uniform change across all months.