Regional Climate Change: Tonga

Climate Stripes

Mean Rate of Change ( °C / Century )

Since:	1760	1810	1860	1910	1960	1990
Tonga	-	-	-	0.98 ± 0.24	1.34 ± 0.43	1.88 ± 0.85

Temperature Record Months and Years

Seasonal Changes

Regional Climate Variability

Difference from Global Land Average ( °C, 95% range )

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	± 1.14	± 0.59	± 0.34	± 0.25	± 0.16

Correlation to Global Land Average (R value)

Smoothing	Monthly	Annual	Five-year	Ten-year	Twenty-year
	0.53	0.78	0.91	0.94	0.97

Variability in Monthly Means ( °C, 95% range )

Jan	Feb	Mar	Apr	May	Jun
± 0.79	± 0.88	± 0.78	± 0.82	± 0.92	± 1.10
Jul	Aug	Sep	Oct	Nov	Dec
± 1.11	± 1.01	± 1.19	± 1.13	± 0.99	± 0.91

History of Temperature Stations

Evolution of Climate Extremes

Mean of Daily High Temperature

Mean of Daily Low Temperature

Change in Diurnal Range