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EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
NOVEMBER 2017 (Table 1)

Date
November
Mean Pressure
(hPa)
Air   Temperature Mean
Dew Point
Temperature
(deg. C)
Mean
Relative
Humidity
(%)
Mean
Amount
of Cloud
(%)
Total
Rainfall
(mm)
Maximum
(deg. C)
Mean
(deg. C)
Minimum
(deg. C)
1 1017.2 26.4 23.0 20.5 16.1 66 29 -
2 1014.3 27.8 23.8 20.9 16.9 67 22 -
3 1015.5 27.6 24.5 22.0 16.7 63 64 -
4 1018.9 25.8 23.6 20.7 14.8 58 86 0.3
5 1018.5 25.6 23.0 20.3 15.8 64 78 Trace
6 1016.4 25.8 23.3 21.3 17.1 68 87 Trace
7 1016.0 26.0 23.6 21.8 18.9 75 88 0.3
8 1015.9 27.3 24.6 23.1 20.6 78 88 Trace
9 1015.8 26.8 24.4 22.8 19.4 74 77 Trace
10 1014.9 28.4 25.0 22.9 20.0 74 56 -
11 1014.1 26.5 24.7 23.4 20.6 78 89 -
12 1013.6 23.5 22.1 21.1 19.8 87 93 14.7
13 1013.2 22.7 21.9 21.5 20.3 91 95 12.5
14 1014.6 24.0 23.0 22.0 20.9 88 88 0.2
15 1016.0 23.9 23.2 22.6 20.3 84 84 -
16 1015.1 26.2 23.4 22.2 19.9 81 68 -
17 1011.6 26.2 24.2 22.9 21.3 84 42 -
18 1012.2 26.5 23.9 20.1 20.8 83 60 1.9
19 1017.7 20.2 19.9 19.4 17.0 84 88 1.0
20 1018.8 20.3 19.3 17.9 15.4 78 91 -
21 1018.0 21.4 19.3 17.5 15.1 77 88 -
22 1016.5 22.9 19.8 17.3 14.0 70 60 -
23 1019.9 20.3 17.8 15.5 10.9 64 47 -
24 1022.1 20.8 18.0 16.5 11.3 65 86 -
25 1021.5 19.1 18.0 16.9 13.1 73 88 -
26 1020.2 22.4 19.7 18.1 14.8 73 73 -
27 1018.1 22.1 20.3 18.5 16.3 78 84 Trace
28 1017.4 24.6 22.2 20.6 18.3 79 76 Trace
29 1016.9 26.4 23.8 21.6 20.4 82 74 -
30 1016.9 23.2 22.3 21.8 20.5 90 86 0.3
Mean/Total 1016.6 24.4 22.2 20.5 17.6 76 74 31.2
Normal* 1017.7 24.1 21.8 19.8 16.0 71 54 37.6
Station Hong   Kong   Observatory

EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
NOVEMBER 2017 (Table 2)

Date
November
Number of hours
of Reduced
Visibility#
(hours)
Total
Bright
Sunshine
(hours)
Daily
Global Solar
Radiation
(MJ/m2)
Total
Evaporation
(mm)
Prevailing
Wind
Direction
(degrees)
Mean
Wind
Speed
(km/h)
1 0 10.3 19.57 4.1 060 26.4
2 0 10.3 19.35 4.4 060 19.7
3 0 10.2 17.73 4.4 360 30.2
4 0 1.5 10.45 4.0 060 35.9
5 3 8.3 15.83 3.6 070 32.2
6 0 1.5 9.91 2.6 060 28.3
7 2 - 5.55 2.3 360 22.4
8 0 1.0 8.34 2.7 080 25.0
9 0 6.2 14.76 3.5 070 40.8
10 8 9.2 17.56 3.6 070 27.1
11 0 1.5 8.24 2.6 070 37.4
12 0 - 3.82 2.0 070 44.1
13 0 - 3.30 1.2 070 35.9
14 0 0.2 6.04 1.7 070 28.5
15 0 0.1 6.55 2.1 060 30.8
16 0 7.9 16.65 2.7 060 29.0
17 0 9.8 17.20 2.4 050 13.1
18 1 3.2 7.21 2.7 360 20.2
19 0 - 3.36 1.7 060 41.5
20 0 - 6.22 2.3 360 29.3
21 0 0.6 6.94 2.4 010 23.0
22 0 9.0 16.83 4.0 350 26.4
23 0 5.4 13.44 3.5 360 34.1
24 0 3.8 11.51 2.8 360 28.5
25 0 - 5.65 1.9 010 21.8
26 0 4.7 11.29 2.7 010 13.8
27 2 0.7 8.93 2.1 050 29.3
28 11 2.4 9.05 1.7 050 28.1
29 5 5.7 13.90 1.7 050 26.4
30 0 0.8 3.56 2.0 070 34.6
Mean/Total 32 114.3 10.62 81.4 060 28.8
Normal* 130.3§ 180.1 12.28 99.5 080 27.0
StationHong   Kong
International   Airport
King's   Park Waglan   Island^

The minimum pressure recorded at the Hong Kong Observatory was 1008.8 hectopascals at 1513 HKT on 17 November.

The maximum air temperature recorded at the Hong Kong Observatory was 28.4 degrees C at 1525 HKT on 10 November.

The minimum air temperature recorded at the Hong Kong Observatory was 15.5 degrees C at 0634 HKT on 23 November.

The maximum gust peak speed recorded at Waglan Island was 79 kilometres per hour from 070 degrees at 2138 HKT on 18 November.

The maximum 1-minute mean rainfall rate recorded at King's Park was 25 millimetres per hour at 1247 HKT on 12 November.

# Reduced visibility refers to visibility below 8 kilometres when there is no fog, mist or precipitation.

   - The visibility readings at the Hong Kong International Airport are based on hourly observations by professional meteorological observers in 2004 and before, and average readings over the 10-minute period before the clock hour of the visibility meter near the middle of the south runway from 2005 onwards. The change of the data source in 2005 is an improvement of the visibility assessment using instrumented observations following the international trend.

   - Before 10 October 2007, the number of hours of reduced visibility at the Hong Kong International Airport in 2005 and thereafter displayed in this web page was based on hourly visibility observations by professional meteorological observers. Since 10 October 2007, the data have been revised using the average visibility readings over the 10-minute period before the clock hour, as recorded by the visibility meter near the middle of the south runway.

^ In case the data are not available from Waglan Island, observations of Cheung Chau or other nearby weather stations will be incorporated in computing the Prevailing Wind Direction and Mean Wind Speed.

* 1981-2010 Climatlogical Normal, unless otherwise specified

§ 1997-2016 Mean value

Last revision date: <01 Dec 2017>