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 September 9, Tuesday | 20 | 15.3 60 | 753.7 29.67 1004.85 1004.85 | 758.3 29.85 1010.98 1010.98 | -1.0 -0.04 -1.33 -1.33 | 79 | Wind blowing from the south-southeast | 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 | 13 m/s 47 km/h 29 miles/hour 25 knots 6 Bft | 100%. 10/10. 8 oktas | Rain, not freezing, slight. | 100%. 10/10. 8 oktas | 600-1000 1968-3281 | 4.2 2.6 | 11.6 53 | 0.2 0.01 | 1 | |||||||||||
19 | 16.7 62 | 753.7 29.67 1004.85 1004.85 | 758.4 29.86 1011.12 1011.12 | -1.6 -0.06 -2.13 -2.13 | 79 | Wind blowing from the south-east | 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 | 12 m/s 43 km/h 27 miles/hour 23 knots 6 Bft | 100%. 10/10. 8 oktas | Rain, not freezing, slight. | 15.6 60 | 18.4 65 | 100%. 10/10. 8 oktas | 1500-2000 4921-6562 | 23.0 14.3 | 13.1 56 | No precipitation No precipitation | 12 | ||||||||||
18 | 17.1 63 | 754.2 29.69 1005.52 1005.52 | 758.8 29.87 1011.65 1011.65 | -1.6 -0.06 -2.13 -2.13 | 74 | Wind blowing from the south-east | 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 | 100%. 10/10. 8 oktas | 100%. 10/10. 8 oktas | 1000-1500 3281-4921 | 35.0 21.8 | 12.4 54 | No precipitation No precipitation | 1 | |||||||||||||
17 | 17.3 63 | 754.7 29.71 1006.18 1006.18 | 759.4 29.9 1012.45 1012.45 | -1.5 -0.06 -2 -2 | 70 | Wind blowing from the south-southeast | 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 | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 100%. 10/10. 8 oktas | 100%. 10/10. 8 oktas | 2000-2500 6562-8202 | 35.0 21.8 | 11.8 53 | No precipitation No precipitation | 1 | |||||||||||||
16 | 17.5 64 | 755.3 29.74 1006.98 1006.98 | 760.0 29.92 1013.25 1013.25 | -1.2 -0.05 -1.6 -1.6 | 71 | Wind blowing from the south-southeast | 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 | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 2500 or more, or no clouds. 8202 or more, or no clouds. | 35.0 21.8 | 12.1 54 | No precipitation No precipitation | 1 | |||||||||||||
15 | 17.4 63 | 755.8 29.76 1007.65 1007.65 | 760.3 29.93 1013.65 1013.65 | -0.9 -0.04 -1.2 -1.2 | 70 | Wind blowing from the south | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 10 m/s 36 km/h 22 mph 19 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 | 35.0 21.8 | 11.9 53 | No precipitation No precipitation | 1 | |||||||||||||
14 | 18.0 64 | 756.2 29.77 1008.18 1008.18 | 760.9 29.96 1014.45 1014.45 | -0.7 -0.03 -0.93 -0.93 | 69 | Wind blowing from the south | 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 | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 20–30%. 2/10–3/10. 2 oktas | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 30.0 18.6 | 12.3 54 | No precipitation No precipitation | 1 | |||||||||||||
13 | 17.2 63 | 756.5 29.78 1008.58 1008.58 | 761.2 29.97 1014.85 1014.85 | -0.5 -0.02 -0.67 -0.67 | 69 | Wind blowing from the south | 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 | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 60%. 6/10. 5 oktas | 60%. 6/10. 5 oktas | 600-1000 1968-3281 | 30.0 18.6 | 11.5 53 | No precipitation No precipitation | 6 | |||||||||||||
12 | 17.6 64 | 756.7 29.79 1008.85 1008.85 | 761.3 29.97 1014.98 1014.98 | -0.6 -0.02 -0.8 -0.8 | 69 | Wind blowing from the south | 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 | 11 m/s 40 km/h 25 miles/hour 21 mile/hour 6 Bft | 100%. 10/10. 8 oktas | 100%. 10/10. 8 oktas | 300-600 984-1968 | 35.0 21.8 | 11.9 53 | No precipitation No precipitation | 1 | |||||||||||||
11 | 17.5 64 | 756.9 29.8 1009.12 1009.12 | 761.5 29.98 1015.25 1015.25 | -0.3 -0.01 -0.4 -0.4 | 68 | Wind blowing from the south | 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 | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | 50%. 5/10. 4 oktas | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 35.0 21.8 | 11.4 53 | No precipitation No precipitation | 1 | |||||||||||||
10 | 17.2 63 | 757.0 29.8 1009.25 1009.25 | 761.7 29.99 1015.52 1015.52 | 0.0 0 0 0 | 70 | Wind blowing from the south | 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 | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 40%. 4/10. 3 oktas | 15.3 60 | 17.7 64 | 40%. 4/10. 3 oktas | 600-1000 1968-3281 | 35.0 21.8 | 11.7 53 | No precipitation No precipitation | 12 | |||||||||||
09 | 17.0 63 | 757.3 29.81 1009.65 1009.65 | 761.9 30 1015.78 1015.78 | 72 | Wind blowing from the south | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 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 | 35.0 21.8 | 11.8 53 | No precipitation No precipitation | 1 | ||||||||||||||
08 | 15.9 61 | 757.2 29.81 1009.52 1009.52 | 761.8 29.99 1015.65 1015.65 | -0.1 -0 -0.13 -0.13 | 73 | Wind blowing from the south-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 | 9 m/s 32 km/h 20 miles/hour 17 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 | 30.0 18.6 | 11.1 52 | No precipitation No precipitation | 1 | |||||||||||||
07 | 15.6 60 | 757.0 29.8 1009.25 1009.25 | 761.7 29.99 1015.52 1015.52 | 75 | Wind blowing from the south-southwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 17 m/s 61 km/h 38 miles/hour 33 knots 7 Bft | 18 m/s 65 km/h 40 miles/hour 35 knots 8 Bft | 20–30%. 2/10–3/10. 2 oktas | 15.3 60 | 16.5 62 | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 35.0 21.8 | 11.2 52 | No precipitation No precipitation | 12 | ||||||||||||
05 | 15.5 60 | 757.3 29.81 1009.65 1009.65 | 761.9 30 1015.78 1015.78 | 74 | Wind blowing from the south-southwest | Moderate breeze (7 m/s) (25 km/h) (16 miles/hour) (14 knots) (4 Bft) | 18 m/s 65 km/h 40 miles/hour 35 knots 8 Bft | 18 m/s 65 km/h 40 miles/hour 35 knots 8 Bft | 50%. 5/10. 4 oktas | 50%. 5/10. 4 oktas | 300-600 984-1968 | 30.0 18.6 | 10.9 52 | No precipitation No precipitation | 1 | ||||||||||||||
04 | 15.5 60 | 757.5 29.82 1009.92 1009.92 | 762.2 30.01 1016.18 1016.18 | 75 | Wind blowing from the south-west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 16 m/s 58 km/h 36 miles/hour 31 mile/hour 7 Bft | 17 m/s 61 km/h 38 miles/hour 33 knots 7 Bft | 20–30%. 2/10–3/10. 2 oktas | 20–30%. 2/10–3/10. 2 oktas | 600-1000 1968-3281 | 30.0 18.6 | 11.1 52 | No precipitation No precipitation | 1 | ||||||||||||||
03 | 15.5 60 | 757.7 29.83 1010.18 1010.18 | 762.4 30.02 1016.45 1016.45 | -0.7 -0.03 -0.93 -0.93 | 75 | Wind blowing from the south-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 | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 40%. 4/10. 3 oktas | 40%. 4/10. 3 oktas | 300-600 984-1968 | 35.0 21.8 | 11.1 52 | No precipitation No precipitation | 1 | |||||||||||||
02 | 15.8 60 | 758.1 29.85 1010.72 1010.72 | 762.7 30.03 1016.85 1016.85 | -0.6 -0.02 -0.8 -0.8 | 77 | Wind blowing from the south-southwest | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 50%. 5/10. 4 oktas | 50%. 5/10. 4 oktas | 300-600 984-1968 | 27.0 16.8 | 11.7 53 | No precipitation No precipitation | 1 | |||||||||||||
01 | 15.9 61 | 758.2 29.85 1010.85 1010.85 | 763.0 30.04 1017.25 1017.25 | -0.8 -0.03 -1.07 -1.07 | 77 | 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 | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 90 or more, but not 100% 9/10 or more, but not 10/10 7 oktas or more, but not 8 oktas | 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 | 30.0 18.6 | 11.9 53 | No precipitation No precipitation | 6 | |||||||||||||
00 | 15.6 60 | 758.4 29.86 1011.12 1011.12 | 763.1 30.04 1017.38 1017.38 | 74 | Wind blowing from the south-west | Moderate breeze (6 m/s) (22 km/h) (13 miles/hour) (12 knots) (4 Bft) | 14 m/s 50 km/h 31 mile/hour 27 knots 7 Bft | 15 m/s 54 km/h 34 mph 29 knots 7 Bft | 50%. 5/10. 4 oktas | 50%. 5/10. 4 oktas | 600-1000 1968-3281 | 30.0 18.6 | 10.9 52 | No precipitation No precipitation | 1 | ||||||||||||||
| September 8, Monday | 23 | 15.6 60 | 758.7 29.87 1011.52 1011.52 | 763.3 30.05 1017.65 1017.65 | -0.1 -0 -0.13 -0.13 | 75 | 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 | 30.0 18.6 | 11.1 52 | No precipitation No precipitation | 1 | ||||||||||||
22 | 15.6 60 | 759.0 29.88 1011.92 1011.92 | 763.6 30.06 1018.05 1018.05 | 0.5 0.02 0.67 0.67 | 75 | 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 | 9 m/s 32 km/h 20 miles/hour 17 knots 5 Bft | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 15.6 60 | 19.5 67 | 10% or less, but not 0 1/10 or less, but not zero 1 okta or less, but not 0 | 600-1000 1968-3281 | 25.0 15.5 | 11.1 52 | No precipitation No precipitation | 12 | |||||||||||
21 | 16.0 61 | 759.0 29.88 1011.92 1011.92 | 763.7 30.07 1018.18 1018.18 | 76 | Wind blowing from the west-southwest | Fresh breeze (8 m/s) (29 km/h) (18 miles/hour) (16 knots) (5 Bft) | 18 m/s 65 km/h 40 miles/hour 35 knots 8 Bft | 21 m/s 76 km/h 47 miles/hour 41 mile/hour 9 Bft | no clouds no clouds no clouds | 21.0 13.1 | 11.8 53 | No precipitation No precipitation | 1 | ||||||||||||||||
20 | 16.1 61 | 758.8 29.87 1011.65 1011.65 | 763.4 30.06 1017.78 1017.78 | 0.3 0.01 0.4 0.4 | 73 | 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 | 10 m/s 36 km/h 22 mph 19 knots 5 Bft | no clouds no clouds no clouds | 21.0 13.1 | 11.3 52 | No precipitation No precipitation | 1 | |||||||||||||||