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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 December 21, Sunday | 19 | -1.5 29 | 716.8 28.22 955.65 955.65 | 740.1 29.14 986.72 986.72 | -0.1 -0 -0.13 -0.13 | 71 | Calm, no wind | Calm | 20–30%. 2/10–3/10. 2 oktas | 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. | Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus or both, but Cirrocumulus is predominant. | 20.0 12.4 | -6.2 21 | |||||||||||||
16 | 0.5 33 | 716.9 28.22 955.79 955.79 | 740.5 29.15 987.25 987.25 | -0.3 -0.01 -0.4 -0.4 | 75 | variable wind direction | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 20.0 12.4 | -3.5 26 | ||||||||||||||
13 | 0.0 32 | 717.2 28.24 956.19 956.19 | 740.8 29.17 987.65 987.65 | -0.5 -0.02 -0.67 -0.67 | 66 | variable wind direction | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 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. | 20.0 12.4 | -5.6 22 | ||||||||||||||
10 | 0.0 32 | 717.7 28.26 956.85 956.85 | 741.2 29.18 988.19 988.19 | -0.4 -0.02 -0.53 -0.53 | 68 | variable wind direction | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | -6.6 20 | 0.5 33 | 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. | 20.0 12.4 | -5.3 22 | Compact or wet snow (with or without ice) covering at least one-half of the ground but ground not completely covered. | 34 13.4 | ||||||||||
07 | -0.4 31 | 718.1 28.27 957.39 957.39 | 741.7 29.2 988.85 988.85 | -0.8 -0.03 -1.07 -1.07 | 71 | Wind blowing from the east-southeast | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 40%. 4/10. 3 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 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 20.0 12.4 | -5.1 23 | ||||||||||||||
04 | -4.8 23 | 718.9 28.3 958.45 958.45 | 742.5 29.23 989.92 989.92 | -0.4 -0.02 -0.53 -0.53 | 63 | Wind blowing from the south-east | Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft) | 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 | 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 | -10.9 12 | ||||||||||||||
01 | -5.7 22 | 719.3 28.32 958.99 958.99 | 743.0 29.25 990.59 990.59 | -1.1 -0.04 -1.47 -1.47 | 90 | Wind blowing from the south-east | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 70 – 80%. 7/10 – 8/10. 6 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 | 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 | -7.1 19 | ||||||||||||||
| December 20, Saturday | 22 | -5.8 22 | 720.4 28.36 960.45 960.45 | 744.1 29.3 992.05 992.05 | -0.6 -0.02 -0.8 -0.8 | 85 | variable wind direction | Light air (1 m/s) (4 km/h) (2 mph) (2 knots) (1 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | -6.4 20 | 2.1 36 | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | Altocumulus castellanus or floccus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 20.0 12.4 | -8.0 18 | |||||||||||
19 | -3.9 25 | 721.0 28.39 961.25 961.25 | 744.7 29.32 992.85 992.85 | -0.1 -0 -0.13 -0.13 | 78 | Wind blowing from the west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Stratus nebulosus or Stratus 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 | -7.2 19 | ||||||||||||||
