Weather archive in Bua Chum

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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 18, Friday	22	23.6 74	753.3 29.66 1004.32 1004.32	757.9 29.84 1010.45 1010.45	1.9 0.07 2.53 2.53	99	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Mist.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	20–30%. 2/10–3/10. 2 oktas	300-600 984-1968	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.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	5.0 3.1	23.4 74	0.4 0.02	3
	21	24.8 77	752.8 29.64 1003.65 1003.65	756.6 29.79 1008.72 1008.72			Wind blowing from the north-east	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73	35.4 96								No precipitation No precipitation	1
	20	24.7 76	752.2 29.61 1002.85 1002.85	756.0 29.76 1007.92 1007.92				Calm							22.7 73	35.4 96								No precipitation No precipitation	1
	19	25.5 78	751.4 29.58 1001.78 1001.78	756.1 29.77 1008.05 1008.05	1.6 0.06 2.13 2.13	99	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	Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation.	Thunderstorm(s) with or without precipitation.	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.		35.4 96	Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	20–30%. 2/10–3/10. 2 oktas	300-600 984-1968	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.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	5.0 3.1	25.3 78	17.0 0.67	12
	18	25.0 77	751.3 29.58 1001.65 1001.65	755.1 29.73 1006.72 1006.72			Wind blowing from the west	Calm							22.7 73	35.4 96								10.0 0.39	1
	17	32.5 91				57	Wind blowing from the west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73	35.4 96							23.0 73
	16	35.4 96	749.8 29.52 999.65 999.65	754.2 29.69 1005.52 1005.52	-1.4 -0.06 -1.87 -1.87	42	Calm, no wind	Calm			60%. 6/10. 5 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.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	8.0 5.0	20.7 69
	15	34.0 93				47	Wind blowing from the east-northeast	Calm							22.7 73	35.2 95							21.3 70
	14	33.4 92				48	Wind blowing from the north-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73	34.9 95							21.0 70
	13	33.4 92	751.2 29.57 1001.52 1001.52	755.7 29.75 1007.52 1007.52	-2.2 -0.09 -2.93 -2.93	48	Wind blowing from the south-west	Light breeze (2 m/s) (7 km/h) (4 mph) (4 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.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	No Altocumulus, Altostratus or Nimbostratus.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	10.0 6.2	20.9 70
	12	32.7 91				50	Wind blowing from the south	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73	34.2 94							20.9 70
	11	31.7 89				54	Wind blowing from the east-southeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73	34.2 94							21.2 70
	10	30.2 86	753.4 29.66 1004.45 1004.45	757.9 29.84 1010.45 1010.45	0.7 0.03 0.93 0.93	64	Wind blowing from the south-west	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)			60%. 6/10. 5 oktas						Cumulus humilis or Cumulus fractus other than of bad weather, or both.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	10.0 6.2	22.6 73
	09	27.7 82				74	Wind blowing from the south-southwest	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73								22.7 73
	08	25.8 78				84	Wind blowing from the north-northeast	Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft)							22.7 73								22.9 73
	07	24.2 76	752.7 29.63 1003.52 1003.52	757.3 29.81 1009.65 1009.65	0.1 0 0.13 0.13	98	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	Mist.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	22.7 73		Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	5.0 3.1	23.9 75
	06	23.2 74	752.1 29.61 1002.72 1002.72	755.8 29.76 1007.65 1007.65			Wind blowing from the south-west	Calm							22.7 73	34.2 94								No precipitation No precipitation	1
	05	23.2 74	751.6 29.59 1002.05 1002.05	755.3 29.74 1006.98 1006.98				Calm							22.7 73	34.2 94								No precipitation No precipitation	1
	04	23.6 74	752.6 29.63 1003.38 1003.38	757.3 29.81 1009.65 1009.65	0.0 0 0 0	98	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Mist.	Cloud covering more than 1/2 of the sky throughout the appropriate period.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	5.0 3.1	23.3 74
	03	23.6 74	751.5 29.59 1001.92 1001.92	755.2 29.73 1006.85 1006.85			Wind blowing from the west	Calm							23.2 74	34.2 94								No precipitation No precipitation	1
	02	23.6 74	751.9 29.6 1002.45 1002.45	755.7 29.75 1007.52 1007.52				Calm							23.3 74	34.2 94								No precipitation No precipitation	1
	01	24.0 75	752.6 29.63 1003.38 1003.38	757.3 29.81 1009.65 1009.65	-1.2 -0.05 -1.6 -1.6	94	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Mist.	Thunderstorm(s) with or without precipitation.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	6.0 3.7	23.0 73
	00	23.6 74	752.8 29.64 1003.65 1003.65	756.6 29.79 1008.72 1008.72			Wind blowing from the south-west	Calm							23.3 74	34.2 94								No precipitation No precipitation	1
September 17, Thursday	23	24.1 75	753.4 29.66 1004.45 1004.45	757.2 29.81 1009.52 1009.52				Calm							23.5 74	34.2 94								No precipitation No precipitation	1
September 17, Thursday	22	24.7 76	753.8 29.68 1004.98 1004.98	758.5 29.86 1011.25 1011.25	1.6 0.06 2.13 2.13	87	Calm, no wind	Calm			70 – 80%. 7/10 – 8/10. 6 oktas	Lightning visible, no thunder heard.	Thunderstorm(s) with or without precipitation.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Cumulonimbus capillatus (often with an anvil), with or without Cumulonimbus calvus, Cumulus, Stratocumulus, Stratus or pannus.	20–30%. 2/10–3/10. 2 oktas	300-600 984-1968	Altocumulus translucidus at a single level.	Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.	6.0 3.7	22.3 72