Weather archive in Keflavik (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 2, Wednesday | 06 | 8.2 47 | 752.3 29.62 1002.98 1002.98 | 757.5 29.82 1009.92 1009.92 | 86 | Wind blowing from the east | 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 | Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | Altostratus translucidus. | 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. | 70.0 43.5 | 6.0 43 | ||||||||||||||
00 | 6.5 44 | 753.9 29.68 1005.12 1005.12 | 759.2 29.89 1012.18 1012.18 | 83 | Wind blowing from the south-east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | 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 | No Altocumulus, 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. | 70.0 43.5 | 3.8 39 | |||||||||||||||
| September 1, Tuesday | 18 | 10.4 51 | 754.6 29.71 1006.05 1006.05 | 759.8 29.91 1012.98 1012.98 | 58 | Wind blowing from the west-northwest | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 8.6 47 | 12.0 54 | 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 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. | 70.0 43.5 | 2.3 36 | ||||||||||||
12 | 10.3 51 | 754.9 29.72 1006.45 1006.45 | 760.1 29.93 1013.38 1013.38 | 68 | Wind blowing from the north-west | Light breeze (2 m/s) (7 km/h) (4 mph) (4 knots) (2 Bft) | 70 – 80%. 7/10 – 8/10. 6 oktas | Cumulus humilis or Cumulus 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 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. | 70.0 43.5 | 4.5 40 | |||||||||||||||
06 | 5.2 41 | 753.8 29.68 1004.98 1004.98 | 759.1 29.89 1012.05 1012.05 | 88 | Wind blowing from the north | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 knots) (2 Bft) | 20–30%. 2/10–3/10. 2 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 | 1000-1500 3281-4921 | No Altocumulus, Altostratus or Nimbostratus. | Cirrus fibratus, sometimes uncinus, not progressively invading the sky. | 70.0 43.5 | 3.3 38 | |||||||||||||||