Weather archive in Katunayake / Bandaranaike (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 15, Monday | 17:30 | 29.9 86 | 755.5 29.74 1007.25 1007.25 | 756.4 29.78 1008.45 1008.45 | 0.3 0.01 0.4 0.4 | 70 | Wind blowing from the west-southwest | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 60%. 6/10. 5 oktas | 29.2 85 | 32.6 91 | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 40%. 4/10. 3 oktas | 300-600 984-1968 | No Altocumulus, 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. | 20.0 12.4 | 23.9 75 | No precipitation No precipitation | 9 | |||||||||
14:30 | 31.4 89 | 755.2 29.73 1006.85 1006.85 | 756.1 29.77 1008.05 1008.05 | 65 | Wind blowing from the west-southwest | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 60%. 6/10. 5 oktas | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 24.1 75 | No precipitation No precipitation | 9 | |||||||||||||
11:30 | 32.1 90 | 757.1 29.81 1009.38 1009.38 | 758.0 29.84 1010.58 1010.58 | 62 | Wind blowing from the west-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 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. | 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 humilis or Cumulus fractus other than of bad weather, or both. | 60%. 6/10. 5 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 23.8 75 | No precipitation No precipitation | 9 | ||||||||||
05:30 | 28.1 83 | 756.7 29.79 1008.85 1008.85 | 757.5 29.82 1009.92 1009.92 | 80 | Wind blowing from the south-west | 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 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 24.4 76 | No precipitation No precipitation | 9 | |||||||||||||
| September 14, Sunday | 23:30 | 28.6 83 | 758.0 29.84 1010.58 1010.58 | 758.9 29.88 1011.78 1011.78 | 0.4 0.02 0.53 0.53 | 77 | Wind blowing from the south-west | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 50%. 5/10. 4 oktas | State of sky on the whole unchanged. | 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 humilis or Cumulus fractus other than of bad weather, or both. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 24.1 75 | No precipitation No precipitation | 9 | ||||||||
20:30 | 28.6 83 | 757.6 29.83 1010.05 1010.05 | 758.5 29.86 1011.25 1011.25 | 76 | Wind blowing from the south-southwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 60%. 6/10. 5 oktas | Cumulus humilis or Cumulus fractus other than of bad weather, or both. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 23.9 75 | No precipitation No precipitation | 9 | |||||||||||||
17:30 | 29.8 86 | 756.4 29.78 1008.45 1008.45 | 757.3 29.81 1009.65 1009.65 | 72 | Wind blowing from the south-west | 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 | 32.1 90 | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 50%. 5/10. 4 oktas | 300-600 984-1968 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 24.3 76 | No precipitation No precipitation | 9 | ||||||||||||