Weather archive in Vientiane (airport)
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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 | |
| 2025 September 16, Tuesday | 22 | 27.7 82 | 741.5 29.19 988.59 988.59 | 756.0 29.76 1007.92 1007.92 | 1.3 0.05 1.73 1.73 | 78 | Wind blowing from the south-west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 40%. 4/10. 3 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. | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | no clouds no clouds no clouds | 2500 or more, or no clouds. 8202 or more, or no clouds. | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 3.0 1.9 | 23.6 74 | ||||||||||
19 | 28.7 84 | 740.2 29.14 986.85 986.85 | 754.6 29.71 1006.05 1006.05 | 0.6 0.02 0.8 0.8 | 73 | Wind blowing from the east-southeast | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | Mist. | Drizzle. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 32.6 91 | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 5.0 3.1 | 23.3 74 | 1.0 0.04 | 12 | ||||||||
16 | 32.2 90 | 739.6 29.12 986.05 986.05 | 753.7 29.67 1004.85 1004.85 | -1.8 -0.07 -2.4 -2.4 | 61 | Wind blowing from the west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 60%. 6/10. 5 oktas | Haze. | Drizzle. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 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 | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 8.0 5.0 | 23.8 75 | 1.0 0.04 | 1 | |||||||||
13 | 29.1 84 | 741.4 29.19 988.45 988.45 | 755.8 29.76 1007.65 1007.65 | -2.4 -0.09 -3.2 -3.2 | 72 | Wind blowing from the north-east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 8 oktas | Drizzle, not freezing, intermittent, slight at time of observation. | 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. | Stratus fractus or Cumulus fractus of bad weather, or both (pannus), usually below Altostratus or Nimbostratus. | 40%. 4/10. 3 oktas | 300-600 984-1968 | Altocumulus cumulogenitus (or cumulonimbogenitus). | 5.0 3.1 | 23.5 74 | ||||||||||||
10 | 27.1 81 | 743.8 29.28 991.65 991.65 | 758.4 29.86 1011.12 1011.12 | 1.5 0.06 2 2 | 83 | Wind blowing from the north-east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 100%. 10/10. 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. | 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 | Altostratus opacus or Nimbostratus. | 5.0 3.1 | 23.9 75 | ||||||||||||
07 | 28.5 83 | 742.3 29.22 989.65 989.65 | 756.8 29.8 1008.98 1008.98 | 76 | Wind blowing from the north-east | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | Mist. | 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. | 25.6 78 | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altocumulus cumulogenitus (or cumulonimbogenitus). | 5.0 3.1 | 23.8 75 | ||||||||||||