Normal meteorology 2007
Station: Vientiane Capital
Symbol	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Tx	31.4	32.9	34.6	35.0	33.1	31.3	30.6	30.3	30.5	30.9	30.7	30.5	31.8
Tn	18.2	20.8	23.7	25.3	24.9	24.7	24.3	24.0	23.8	22.8	20.8	18.5	22.7
(Tx+Tn)/2	24.8	26.9	29.2	30.2	29.0	28.0	27.5	27.2	27.2	26.9	25.8	24.5	27.2
Ux	86	81	77	82	89	92	93	93	94	92	89	86	88
Un	35	37	39	45	55	65	67	68	65	59	51	42	52
(Ux+Un)/2	61	59	58	64	72	79	80	81	80	76	70	64	70
R	1.7	11.5	22.0	66.0	219.4	362.4	373.5	480.6	308.6	98.8	20.6	2.4	1 967.5
Sun	277.0	246.4	257.1	227.2	210.8	142.5	145.4	134.4	148.6	196.5	224.7	255.3	2 465.9
Source: Department of Meteorology and Hydrology
Remarks:
(Tx+Tn)/2= Mean temperature in ○c
Tx     =   Mean maximum temperature in ○c
Tn     =   Mean minimum temperature in ○c
(Ux+Un)/2 = Mean humidity of air in %
Ux   = Mean maximum humidity of air in %
Un   = Mean minimum humidity of air in %
R     = Total rainfall  in mm
Sun = Total sunshine duration in hours