Climate Change Chart of Bora Bora, French Polynesia

Overview of climate changes

Changes in rainfall

Averaged across calendar months, mean daily rainfall has a difference of +0.69 mm/day in the more recent period. This is an unweighted mean of calendar-month means, not a day-weighted annual average; the figures describe daily amounts rather than monthly rainfall totals. The largest monthly increase in mean daily rainfall was in January, with a difference of +2.44 mm/day. By contrast, March had the largest monthly decrease, a difference of -0.83 mm/day; these two months show that the month-to-month differences did not all move in the same direction.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration shows a difference of -0.43 hours/day in the more recent period. This summarizes monthly means without weighting them by the number of days in each month, and does not imply that every month had the same change. The largest monthly decrease was in January, with a difference of -1.04 hours/day in mean daily sunshine duration. The largest increase was in July, at a difference of +0.06 hours/day, so the month-specific comparisons also include an increase.

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.60 °C in the more recent period; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in March, with a difference of +0.83 °C. This identifies the strongest increase among the supplied monthly comparisons, rather than describing every month or a continuous trend.