Weather archive in Rio de Janeiro / Santos Dumont (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 | |
| 2026 September 22, Tuesday | 18 | 24.0 75 | 758.5 29.86 1011.25 1011.25 | 758.9 29.88 1011.78 1011.78 | 85 | Wind blowing from the south-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 100%. 10/10. 8 oktas | Thunderstorm, slight or moderate, without hail, but with rain and/or snow at time of observation. | 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. | 70 – 80%. 7/10 – 8/10. 6 oktas | 300-600 984-1968 | Altocumulus translucidus at a single level. | 6.0 3.7 | 21.3 70 | ||||||||||||
15 | 24.1 75 | 757.2 29.81 1009.52 1009.52 | 757.6 29.83 1010.05 1010.05 | 77 | 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 | Haze. | Rain. | 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 mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 12.0 7.5 | 19.7 67 | 0.2 0.01 | 6 | ||||||||||
12 | 25.5 78 | 759.7 29.91 1012.85 1012.85 | 760.1 29.93 1013.38 1013.38 | 70 | Wind blowing from the south | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 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 | Rain (not freezing) not falling as shower(s). | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 70 – 80%. 7/10 – 8/10. 6 oktas | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 15.0 9.3 | 19.7 67 | ||||||||||||
09 | 24.6 76 | 760.0 29.92 1013.25 1013.25 | 760.3 29.93 1013.65 1013.65 | 78 | Wind blowing from the south | 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 | Haze. | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | 23.4 74 | Stratocumulus other than Stratocumulus cumulogenitus. | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 1000-1500 3281-4921 | No Altocumulus, Altostratus or Nimbostratus. | No Cirrus, Cirrocumulus or Cirrostratus. | 12.0 7.5 | 20.6 69 | Trace of precipitation Trace of precipitation | 24 | |||||||||
06 | 26.4 80 | 757.3 29.81 1009.65 1009.65 | 757.7 29.83 1010.18 1010.18 | 65 | Wind blowing from the south-west | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 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 | Rain (not freezing) not falling as shower(s). | Rain. | Cloud covering more than 1/2 of the sky throughout the appropriate period. | Stratocumulus other than Stratocumulus cumulogenitus. | 40%. 4/10. 3 oktas | 600-1000 1968-3281 | Altocumulus translucidus at a single level. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 20.0 12.4 | 19.4 67 | ||||||||||||
03 | 23.6 74 | 754.9 29.72 1006.45 1006.45 | 755.2 29.73 1006.85 1006.85 | 88 | Wind blowing from the north-west | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 60%. 6/10. 5 oktas | No Stratocumulus, Stratus, Cumulus or Cumulonimbus. | 20–30%. 2/10–3/10. 2 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | Altocumulus translucidus at a single level. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 20.0 12.4 | 21.4 71 | |||||||||||||||
| September 21, Monday | 21 | 26.2 79 | 757.8 29.83 1010.32 1010.32 | 758.2 29.85 1010.85 1010.85 | 73 | Wind blowing from the north-northwest | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 50%. 5/10. 4 oktas | 29.8 86 | 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 | 1000-1500 3281-4921 | Altocumulus translucidus at a single level. | No Cirrus, Cirrocumulus or Cirrostratus. | 20.0 12.4 | 20.9 70 | |||||||||||||