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 May 25, Monday	15	8.6 47	752.3 29.62 1002.98 1002.98	757.5 29.82 1009.92 1009.92		81	Wind blowing from the west	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 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	300-600 984-1968	Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole.	No Cirrus, Cirrocumulus or Cirrostratus.	60.0 37.3	5.4 42
	12	6.6 44	750.3 29.54 1000.32 1000.32	755.5 29.74 1007.25 1007.25	1.9 0.07 2.53 2.53	93	Wind blowing from the west-northwest	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			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.			Stratus nebulosus or Stratus fractus other than of bad weather, or both.	100%. 10/10. 8 oktas	300-600 984-1968			6.0 3.7	5.6 42
	09	9.3 49	748.4 29.46 997.78 997.78	753.6 29.67 1004.72 1004.72		75	Wind blowing from the east	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				5.6 42	10.3 51	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	60%. 6/10. 5 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.	Cirrostratus not progressively invading the sky and not entirely covering it.	35.0 21.8	5.1 41	0.4 0.02	15
	06	8.0 46	748.3 29.46 997.65 997.65	753.5 29.67 1004.58 1004.58	-0.4 -0.02 -0.53 -0.53	87	Wind blowing from the east-southeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas	Precipitation within sight, reaching the ground or the surface of the sea, but distant, i.e. estimated to be more than 5 km from the station.	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.	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.			Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	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.	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.	20.0 12.4	5.9 43
	03	5.8 42	748.7 29.48 998.18 998.18	753.9 29.68 1005.12 1005.12		90	Wind blowing from the south-southeast	Gentle breeze (4 m/s) (14 km/h) (9 miles/hour) (8 knots) (3 Bft)			20–30%. 2/10–3/10. 2 oktas						Stratus nebulosus or Stratus fractus other than of bad weather, or both.	20–30%. 2/10–3/10. 2 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	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.	35.0 21.8	4.2 40
	00	6.3 43	748.7 29.48 998.18 998.18	753.9 29.68 1005.12 1005.12	0.5 0.02 0.67 0.67	86	Wind blowing from the south	Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft)			50%. 5/10. 4 oktas	Rain (not freezing) not falling as shower(s).	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.			Stratus nebulosus or Stratus fractus other than of bad weather, or both.	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.	No Cirrus, Cirrocumulus or Cirrostratus.	30.0 18.6	4.1 39
May 24, Sunday	21	7.7 46	748.2 29.46 997.52 997.52	753.4 29.66 1004.45 1004.45		79	Wind blowing from the east	Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft)			100%. 10/10. 8 oktas	Rain, not freezing, intermittent, slight at time of observation.	Rain.	Cloud covering more than 1/2 of the sky throughout the appropriate period.			Stratocumulus other than Stratocumulus cumulogenitus.	60%. 6/10. 5 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.		25.0 15.5	4.2 40
	18	9.4 49	749.3 29.5 998.98 998.98	754.5 29.7 1005.92 1005.92	-0.9 -0.04 -1.2 -1.2	71	Wind blowing from the south-east	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				6.8 44	11.1 52	Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.	60%. 6/10. 5 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	No Cirrus, Cirrocumulus or Cirrostratus.	40.0 24.9	4.4 40	0.2 0.01	9
	15	9.5 49	750.2 29.54 1000.18 1000.18	755.4 29.74 1007.12 1007.12		69	Wind blowing from the south	Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft)			70 – 80%. 7/10 – 8/10. 6 oktas						Cumulonimbus calvus, with or without Cumulus, Stratocumulus or Stratus.	60%. 6/10. 5 oktas	600-1000 1968-3281	Altocumulus translucidus at a single level.	Cirrus fibratus, sometimes uncinus, not progressively invading the sky.	50.0 31.1	4.1 39