Weather archive in the Isle of Portland
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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 20, Saturday | 00 | 10.1 50 | 757.9 29.84 1010.45 1010.45 | 762.7 30.03 1016.85 1016.85 | -1.0 -0.04 -1.33 -1.33 | 77 | Wind blowing from the south-west | Gentle breeze (5 m/s) (18 km/h) (11 miles/hour) (10 knots) (3 Bft) | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 28.0 17.4 | 6.2 43 | No precipitation No precipitation | 6 | ||||||||||||
| December 19, Friday | 23 | 10.2 50 | 758.2 29.85 1010.85 1010.85 | 763.0 30.04 1017.25 1017.25 | -0.7 -0.03 -0.93 -0.93 | 78 | Wind blowing from the south-west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 20–30%. 2/10–3/10. 2 oktas | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 29.0 18.0 | 6.5 44 | No precipitation No precipitation | 1 | ||||||||||||
22 | 10.1 50 | 758.7 29.87 1011.52 1011.52 | 763.4 30.06 1017.78 1017.78 | -0.3 -0.01 -0.4 -0.4 | 80 | Wind blowing from the west-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 22.0 13.7 | 6.7 44 | No precipitation No precipitation | 1 | |||||||||||||
21 | 10.2 50 | 758.9 29.88 1011.78 1011.78 | 763.6 30.06 1018.05 1018.05 | 0.1 0 0.13 0.13 | 79 | Wind blowing from the west-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 8 m/s 29 km/h 18 miles/hour 16 knots 5 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10.0 50 | 11.6 53 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 15.0 9.3 | 6.6 44 | No precipitation No precipitation | 12 | |||||||||||
20 | 10.4 51 | 758.9 29.88 1011.78 1011.78 | 763.7 30.07 1018.18 1018.18 | 0.3 0.01 0.4 0.4 | 78 | Wind blowing from the west-southwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 40%. 4/10. 3 oktas | 40%. 4/10. 3 oktas | 300-600 984-1968 | 25.0 15.5 | 6.7 44 | No precipitation No precipitation | 1 | |||||||||||||
19 | 10.5 51 | 759.0 29.88 1011.92 1011.92 | 763.7 30.07 1018.18 1018.18 | 0.4 0.02 0.53 0.53 | 78 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | Drizzle (not freezing) or snow grains. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 19.0 11.8 | 6.7 44 | No precipitation No precipitation | 1 | ||||||||||||
18 | 10.5 51 | 758.8 29.87 1011.65 1011.65 | 763.6 30.06 1018.05 1018.05 | 0.2 0.01 0.27 0.27 | 80 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10.0 50 | 11.6 53 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 18.0 11.2 | 7.2 45 | No precipitation No precipitation | 12 | |||||||||||
17 | 10.5 51 | 758.6 29.87 1011.38 1011.38 | 763.3 30.05 1017.65 1017.65 | 0.2 0.01 0.27 0.27 | 78 | Wind blowing from the west-southwest | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | no clouds no clouds no clouds | 14.0 8.7 | 6.8 44 | No precipitation No precipitation | 1 | |||||||||||||||
16 | 10.6 51 | 758.6 29.87 1011.38 1011.38 | 763.3 30.05 1017.65 1017.65 | 0.5 0.02 0.67 0.67 | 78 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | no clouds no clouds no clouds | 18.0 11.2 | 6.9 44 | No precipitation No precipitation | 1 | |||||||||||||||
15 | 10.7 51 | 758.6 29.87 1011.38 1011.38 | 763.3 30.05 1017.65 1017.65 | 0.2 0.01 0.27 0.27 | 75 | Wind blowing from the west-southwest | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 29.0 18.0 | 6.5 44 | No precipitation No precipitation | 1 | |||||||||||||
14 | 11.2 52 | 758.4 29.86 1011.12 1011.12 | 763.2 30.05 1017.52 1017.52 | -0.1 -0 -0.13 -0.13 | 75 | Wind blowing from the west | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | Precipitation | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 21.0 13.1 | 6.8 44 | No precipitation No precipitation | 1 | ||||||||||||
13 | 10.2 50 | 758.1 29.85 1010.72 1010.72 | 762.9 30.04 1017.12 1017.12 | 0.2 0.01 0.27 0.27 | 73 | Wind blowing from the west-southwest | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | Rain. | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 30.0 18.6 | 5.6 42 | No precipitation No precipitation | 1 | ||||||||||||
12 | 11.4 53 | 758.4 29.86 1011.12 1011.12 | 763.1 30.04 1017.38 1017.38 | 1.2 0.05 1.6 1.6 | 73 | Wind blowing from the west | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | no clouds no clouds no clouds | 20.0 12.4 | 6.7 44 | No precipitation No precipitation | 6 | |||||||||||||||
11 | 11.0 52 | 758.5 29.86 1011.25 1011.25 | 763.3 30.05 1017.65 1017.65 | 1.8 0.07 2.4 2.4 | 74 | Wind blowing from the west | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 40%. 4/10. 3 oktas | 40%. 4/10. 3 oktas | 600-1000 1968-3281 | 20.0 12.4 | 6.5 44 | No precipitation No precipitation | 1 | |||||||||||||
10 | 10.5 51 | 757.9 29.84 1010.45 1010.45 | 762.6 30.02 1016.72 1016.72 | 1.8 0.07 2.4 2.4 | 73 | Wind blowing from the west | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 20–30%. 2/10–3/10. 2 oktas | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 17.0 10.6 | 5.9 43 | No precipitation No precipitation | 1 | |||||||||||||
09 | 10.5 51 | 757.2 29.81 1009.52 1009.52 | 761.9 30 1015.78 1015.78 | 2.0 0.08 2.67 2.67 | 72 | Wind blowing from the west | Fresh breeze (9 m/s) (32 km/h) (20 miles/hour) (17 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | no clouds no clouds no clouds | 9.9 50 | 11.4 53 | 14.0 8.7 | 5.7 42 | No precipitation No precipitation | 12 | |||||||||||||
08 | 10.4 51 | 756.7 29.79 1008.85 1008.85 | 761.4 29.98 1015.12 1015.12 | 2.1 0.08 2.8 2.8 | 71 | Wind blowing from the west | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 16.0 9.9 | 5.3 42 | No precipitation No precipitation | 1 | |||||||||||||
07 | 10.3 51 | 756.1 29.77 1008.05 1008.05 | 760.8 29.95 1014.32 1014.32 | 1.8 0.07 2.4 2.4 | 72 | Wind blowing from the west | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 15.0 9.3 | 5.4 42 | No precipitation No precipitation | 1 | |||||||||||||
06 | 10.3 51 | 755.2 29.73 1006.85 1006.85 | 760.0 29.92 1013.25 1013.25 | 1.4 0.06 1.87 1.87 | 73 | Wind blowing from the west | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | no clouds no clouds no clouds | 9.9 50 | 11.6 53 | 17.0 10.6 | 5.6 42 | 0.4 0.02 | 12 | |||||||||||||
05 | 10.4 51 | 754.6 29.71 1006.05 1006.05 | 759.4 29.9 1012.45 1012.45 | 1.3 0.05 1.73 1.73 | 71 | Wind blowing from the west | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | no clouds no clouds no clouds | 15.0 9.3 | 5.3 42 | No precipitation No precipitation | 1 | |||||||||||||||
04 | 10.2 50 | 754.3 29.7 1005.65 1005.65 | 759.0 29.88 1011.92 1011.92 | 2.1 0.08 2.8 2.8 | 70 | Wind blowing from the west | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | no clouds no clouds no clouds | 17.0 10.6 | 5.0 41 | No precipitation No precipitation | 1 | |||||||||||||||
03 | 10.1 50 | 753.8 29.68 1004.98 1004.98 | 758.5 29.86 1011.25 1011.25 | 2.3 0.09 3.07 3.07 | 70 | Wind blowing from the west | Strong breeze (12 m/s) (43 km/h) (27 miles/hour) (23 knots) (6 Bft) | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | 16 m/s 58 km/h 36 miles/hour 31 mile/hour 7 Bft | 20–30%. 2/10–3/10. 2 oktas | 20–30%. 2/10–3/10. 2 oktas | 1000-1500 3281-4921 | 15.0 9.3 | 4.9 41 | No precipitation No precipitation | 1 | |||||||||||||
02 | 10.0 50 | 753.3 29.66 1004.32 1004.32 | 758.0 29.84 1010.58 1010.58 | 2.7 0.11 3.6 3.6 | 71 | Wind blowing from the west | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | 40%. 4/10. 3 oktas | 40%. 4/10. 3 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 27.0 16.8 | 4.9 41 | No precipitation No precipitation | 1 | |||||||||||||
01 | 10.0 50 | 752.2 29.61 1002.85 1002.85 | 757.0 29.8 1009.25 1009.25 | 2.6 0.1 3.47 3.47 | 78 | Wind blowing from the west | Strong breeze (11 m/s) (40 km/h) (25 miles/hour) (21 mile/hour) (6 Bft) | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 2500 or more, or no clouds. 8202 or more, or no clouds. | 23.0 14.3 | 6.3 43 | No precipitation No precipitation | 1 | |||||||||||||
00 | 10.4 51 | 751.5 29.59 1001.92 1001.92 | 756.2 29.77 1008.18 1008.18 | 2.9 0.11 3.87 3.87 | 76 | Wind blowing from the west | Fresh breeze (10 m/s) (36 km/h) (22 mph) (19 knots) (5 Bft) | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 100%. 10/10. 8 oktas | 100%. 10/10. 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 27.0 16.8 | 6.4 44 | 0.4 0.02 | 6 | |||||||||||||