Weather archive in Nagapattinam
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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 18, Thursday | 02:30 | 26.2 79 | 753.7 29.67 1004.85 1004.85 | 754.6 29.71 1006.05 1006.05 | 97 | Calm, no wind | Calm | 60%. 6/10. 5 oktas | Stratocumulus other than Stratocumulus cumulogenitus. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | Patches (often lenticular) of Altocumulus translucidus, continually changing and occurring at one or more levels. | Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 4.0 2.5 | 25.6 78 | ||||||||||||||
| September 17, Wednesday | 20:30 | 25.8 78 | 755.1 29.73 1006.72 1006.72 | 755.9 29.76 1007.78 1007.78 | 1.7 0.07 2.27 2.27 | 98 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 50%. 5/10. 4 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. | 2.0 1.2 | 25.5 78 | No precipitation No precipitation | 1 | ||||||||||||
17:30 | 25.8 78 | 753.4 29.66 1004.45 1004.45 | 754.2 29.69 1005.52 1005.52 | 0.0 0 0 0 | 95 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Thunderstorm (with or without precipitation). | Thunderstorm(s) with or without precipitation. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 33.8 93 | Cumulus and Stratocumulus other than Stratocumulus cumulogenitus, with bases at different levels. | 50%. 5/10. 4 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. | 4.0 2.5 | 24.9 77 | |||||||||||
14:30 | 29.0 84 | 753.4 29.66 1004.45 1004.45 | 754.3 29.7 1005.65 1005.65 | -2.2 -0.09 -2.93 -2.93 | 72 | Wind blowing from the west-northwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 100%. 10/10. 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 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. | 4.0 2.5 | 23.5 74 | ||||||||||||
11:30 | 31.4 89 | 755.6 29.75 1007.38 1007.38 | 756.4 29.78 1008.45 1008.45 | -0.5 -0.02 -0.67 -0.67 | 72 | Wind blowing from the west | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 100%. 10/10. 8 oktas | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | Altostratus opacus or Nimbostratus. | Cirrus spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 10.0 6.2 | 25.8 78 | ||||||||||||||
08:30 | 27.2 81 | 756.1 29.77 1008.05 1008.05 | 756.9 29.8 1009.12 1009.12 | 1.7 0.07 2.27 2.27 | 97 | 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 | 23.4 74 | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 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 spissatus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus; or Cirrus castellanus or floccus. | 10.0 6.2 | 26.6 80 | 15.0 0.59 | 24 | |||||||||||
05:30 | 25.8 78 | 754.4 29.7 1005.78 1005.78 | 755.2 29.73 1006.85 1006.85 | 0.3 0.01 0.4 0.4 | 100 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | State of sky on the whole unchanged. | Drizzle. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | Altostratus opacus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 4.0 2.5 | 25.8 78 | |||||||||||
02:30 | 25.2 77 | 754.1 29.69 1005.38 1005.38 | 754.9 29.72 1006.45 1006.45 | -1.1 -0.04 -1.47 -1.47 | 100 | Calm, no wind | Calm | 100%. 10/10. 8 oktas | Drizzle, not freezing, continuous, slight at time of observation. | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 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. | 4.0 2.5 | 25.2 77 | ||||||||||||