Weather archive in Lang Son

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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 September 11, Friday	16	27.6 82	737.2 29.02 982.85 982.85	759.5 29.9 1012.58 1012.58	-1.2 -0.05 -1.6 -1.6	55	Wind blowing from the north	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			20–30%. 2/10–3/10. 2 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	17.8 64
	13	27.6 82	738.4 29.07 984.45 984.45	760.8 29.95 1014.32 1014.32	-1.5 -0.06 -2 -2	60	Wind blowing from the north-east	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			50%. 5/10. 4 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	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	19.1 66
	10	26.4 80	739.9 29.13 986.45 986.45	762.4 30.02 1016.45 1016.45	1.3 0.05 1.73 1.73	61	Wind blowing from the north	Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft)			40%. 4/10. 3 oktas						Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	40%. 4/10. 3 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	18.2 65
	07	23.5 74	738.6 29.08 984.72 984.72	761.3 29.97 1014.98 1014.98		88	Calm, no wind	Calm			60%. 6/10. 5 oktas				22.7 73		Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	60%. 6/10. 5 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	No Cirrus, Cirrocumulus or Cirrostratus.	15.0 9.3	21.3 70
	01	24.0 75	737.1 29.02 982.72 982.72	759.8 29.91 1012.98 1012.98		95	Calm, no wind	Calm			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas						Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	300-600 984-1968			10.0 6.2	23.1 74
September 10, Thursday	19	23.5 74	735.3 28.95 980.32 980.32	757.9 29.84 1010.45 1010.45	0.8 0.03 1.07 1.07	92	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Clouds generally forming or developing.	Thunderstorm(s) with or without precipitation.	Shower(s).		29.5 85	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	70 – 80%. 7/10 – 8/10. 6 oktas	600-1000 1968-3281			10.0 6.2	22.1 72	12.0 0.47	24
September 10, Thursday	16	27.7 82	734.5 28.92 979.25 979.25	756.8 29.8 1008.98 1008.98	-0.9 -0.04 -1.2 -1.2	74	Wind blowing from the east	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	Clouds generally forming or developing.	Thunderstorm(s) with or without precipitation.	Shower(s).			Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas	300-600 984-1968			15.0 9.3	22.7 73