Weather archive in Vientiane (airport)

To receive explanations, hover over the appropriate heading

Date / Local time		T	Po	P	Pa	U	DD	Ff	ff10	ff3	N	WW	W1	W2	Tn	Tx	Cl	Nh	H	Cm	Ch	VV	Td	RRR	tR	E	Tg	E'	sss
2026 May 19, Tuesday	13	30.8 87	737.9 29.05 983.79 983.79	752.2 29.61 1002.85 1002.85	-1.8 -0.07 -2.4 -2.4	70	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Haze.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.			Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	40%. 4/10. 3 oktas	300-600 984-1968	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	8.0 5.0	24.7 76
	10	27.8 82	739.7 29.12 986.19 986.19	754.2 29.69 1005.52 1005.52	1.1 0.04 1.47 1.47	83	Wind blowing from the west-southwest	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	Mist.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.			Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	50%. 5/10. 4 oktas	300-600 984-1968	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	8.0 5.0	24.6 76
	07	24.8 77	738.6 29.08 984.72 984.72	753.1 29.65 1004.05 1004.05	0.6 0.02 0.8 0.8	93	Wind blowing from the north	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas	Mist.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	24.7 76		Stratus nebulosus or Stratus fractus other than of bad weather, or both.	60%. 6/10. 5 oktas	200-300 656-984	Altocumulus cumulogenitus (or cumulonimbogenitus).		5.0 3.1	23.6 74	4.0 0.16	24
	04	24.3 76	738.0 29.06 983.92 983.92	752.5 29.63 1003.25 1003.25		96	Wind blowing from the south	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			100%. 10/10. 8 oktas	Drizzle, not freezing, intermittent, slight at time of observation.	Rain.	Rain.			Stratus fractus or Cumulus fractus of bad weather, or both (pannus), usually below Altostratus or Nimbostratus.	50%. 5/10. 4 oktas	200-300 656-984	Altocumulus translucidus or opacus in two or more layers, or Altocumulus opacus in a single layer, not progressively invading the sky, or Altocumulus with Altostratus or Nimbostratus.		3.0 1.9	23.6 74	0.5 0.02	3
May 18, Monday	22	27.1 81	739.0 29.09 985.25 985.25	753.5 29.67 1004.58 1004.58	2.1 0.08 2.8 2.8	89	Wind blowing from the east-southeast	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			50%. 5/10. 4 oktas	Mist.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	Cloud covering 1/2 or less of the sky throughout the appropriate period.			Stratocumulus other than Stratocumulus cumulogenitus.	50%. 5/10. 4 oktas	1000-1500 3281-4921	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	3.0 1.9	25.2 77
	19	28.0 82	736.9 29.01 982.45 982.45	751.3 29.58 1001.65 1001.65	0.2 0.01 0.27 0.27	85	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			60%. 6/10. 5 oktas	Mist.	Cloud covering more than 1/2 of the sky during part of the appropriate period and covering 1/2 or less during part of the period.	Cloud covering 1/2 or less of the sky throughout the appropriate period.		29.5 85	Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	20–30%. 2/10–3/10. 2 oktas	300-600 984-1968	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	6.0 3.7	25.2 77
	16	28.8 84	736.7 29 982.19 982.19	751.0 29.57 1001.25 1001.25	-1.7 -0.07 -2.27 -2.27	80	Wind blowing from the east	Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft)			60%. 6/10. 5 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	50%. 5/10. 4 oktas	300-600 984-1968	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	15.0 9.3	25.0 77
	13	27.6 82	738.4 29.07 984.45 984.45	752.8 29.64 1003.65 1003.65	-1.1 -0.04 -1.47 -1.47	87	Wind blowing from the south	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			100%. 10/10. 8 oktas	State of sky on the whole unchanged.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratus nebulosus or Stratus fractus other than of bad weather, or both.	60%. 6/10. 5 oktas	200-300 656-984	Altocumulus cumulogenitus (or cumulonimbogenitus).		8.0 5.0	25.3 78	3.0 0.12	6