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 21, Monday | 09 | 10.4 51 | 738.9 29.09 985.12 985.12 | 744.0 29.29 991.92 991.92 | 94 | Wind blowing from the south-east | Near gale (14 m/s) (50 km/h) (31 mile/hour) (27 knots) (7 Bft) | 100%. 10/10. 8 oktas | Drizzle and rain, moderate or heavy. | Rain. | Drizzle. | 8.1 47 | 10.5 51 | Stratus nebulosus or Stratus fractus other than of bad weather, or both. | 100%. 10/10. 8 oktas | 200-300 656-984 | 2.0 1.2 | 9.5 49 | 8.0 0.31 | 15 | |||||||||
06 | 9.9 50 | 740.9 29.17 987.79 987.79 | 746.0 29.37 994.59 994.59 | -4.6 -0.18 -6.13 -6.13 | 82 | Wind blowing from the east | Near gale (17 m/s) (61 km/h) (38 miles/hour) (33 knots) (7 Bft) | 9.8 50 | 10.1 50 | 7.0 45 | |||||||||||||||||||
03 | 9.2 49 | 745.5 29.35 993.92 993.92 | 750.7 29.56 1000.85 1000.85 | 84 | Wind blowing from the east-southeast | Near gale (15 m/s) (54 km/h) (34 mph) (29 knots) (7 Bft) | 8.9 48 | 9.2 49 | 6.6 44 | No precipitation No precipitation | 1 | ||||||||||||||||||
00 | 8.9 48 | 749.7 29.52 999.52 999.52 | 754.9 29.72 1006.45 1006.45 | 79 | Wind blowing from the east | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 8.8 48 | 9.0 48 | 5.5 42 | ||||||||||||||||||||
| September 20, Sunday | 18 | 9.3 49 | 754.0 29.69 1005.25 1005.25 | 759.2 29.89 1012.18 1012.18 | 74 | Wind blowing from the south-east | Light breeze (3 m/s) (11 km/h) (7 miles/hour) (6 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 | 7.8 46 | 11.0 52 | Stratocumulus other than Stratocumulus cumulogenitus. | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | 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. | Cirrostratus covering the whole sky. | 30.0 18.6 | 4.8 41 | ||||||||||||
12 | 10.4 51 | 754.0 29.69 1005.25 1005.25 | 759.2 29.89 1012.18 1012.18 | 68 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 20–30%. 2/10–3/10. 2 oktas | Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level. | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | No Altocumulus, Altostratus or Nimbostratus. | Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus or both, but Cirrocumulus is predominant. | 40.0 24.9 | 4.7 40 | |||||||||||||||