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EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
DECEMBER 2016 (Table 1)

Date
December
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 1022.1 22.4 19.8 17.2 13.4 67 19 -
2 1022.6 22.4 20.5 18.4 15.7 74 77 -
3 1020.9 22.8 21.3 19.9 17.0 77 87 -
4 1018.2 24.9 22.3 21.0 18.4 79 77 Trace
5 1017.7 25.9 23.3 21.8 19.4 79 84 -
6 1020.7 22.9 20.8 19.4 11.1 54 84 Trace
7 1019.1 22.2 19.9 18.2 12.1 61 73 Trace
8 1016.5 21.7 19.2 17.1 11.4 61 27 -
9 1015.4 21.9 19.4 16.5 12.6 65 16 -
10 1016.4 23.1 20.8 18.3 15.6 72 51 -
11 1016.6 21.5 20.4 19.5 16.0 76 51 Trace
12 1015.1 23.3 21.1 19.0 16.9 77 59 Trace
13 1014.5 25.7 22.9 20.7 18.0 75 48 Trace
14 1018.2 23.4 21.4 18.8 14.2 63 80 Trace
15 1022.6 20.4 18.0 15.6 10.6 62 67 -
16 1025.5 17.1 15.2 13.2 7.7 61 17 -
17 1023.2 18.6 16.6 13.7 10.7 68 56 -
18 1021.6 21.3 19.2 17.2 14.8 76 46 -
19 1018.5 22.5 20.3 18.5 15.3 73 29 -
20 1017.3 22.9 21.3 20.0 17.6 80 80 -
21 1016.8 22.6 21.9 21.0 20.1 90 85 2.8
22 1016.8 24.8 22.4 19.7 17.4 75 59 0.1
23 1019.0 21.9 20.2 19.1 15.1 73 78 Trace
24 1019.2 19.5 18.1 16.9 13.8 76 88 3.7
25 1018.4 20.3 19.5 18.4 16.3 82 85 Trace
26 1017.0 23.7 21.4 19.5 17.6 80 53 -
27 1020.4 21.8 16.6 12.8 8.8 61 45 -
28 1023.0 15.7 14.0 11.5 6.3 60 81 -
29 1024.1 17.9 15.9 13.9 6.5 54 80 -
30 1024.2 18.6 16.6 14.8 8.7 60 83 -
31 1022.8 20.7 18.2 15.6 13.4 74 64 -
Mean/Total 1019.5 21.8 19.6 17.7 13.9 70 62 6.6
Normal* 1020.5 20.2 17.9 15.9 11.9 69 52 26.8
Station Hong   Kong   Observatory

EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
DECEMBER 2016 (Table 2)

Date
December
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 2 9.3 16.08 3.1 010 24.3
2 6 6.8 13.24 0.8 070 26.3
3 7 0.7 8.32 0.3 070 26.0
4 13 2.4 9.92 3.2 070 9.8
5 21 5.0 11.96 4.2 060 12.0
6 0 4.9 12.00 4.1 010 30.2
7 5 5.2 11.65 3.8 020 17.3
8 7 9.3 15.97 2.7 020 16.7
9 0 9.5 16.59 3.6 080 23.7
10 5 8.8 15.90 1.0 070 28.0
11 0 8.3 15.59 3.5 080 42.8
12 0 7.2 15.18 2.6 070 25.2
13 5 8.8 15.13 3.1 060 12.7
14 0 3.8 11.48 5.2 020 27.9
15 0 5.6 12.56 3.6 010 31.5
16 0 9.3 15.69 2.8 010 31.1
17 0 2.1 8.23 1.4 060 31.5
18 0 7.3 13.56 1.3 060 29.6
19 0 9.3 16.41 2.3 060 22.8
20 0 2.7 10.93 1.5 060 26.8
21 2 0.2 3.70 0.4 040 23.5
22 2 7.1 14.64 4.8 010 25.9
23 4 4.1 11.36 2.4 030 25.7
24 0 - 3.98 1.8 070 41.8
25 0 1.3 5.93 0.5 070 36.6
26 10 7.1 14.09 3.8 100 15.6
27 0 9.4 16.89 4.4 010 48.4
28 0 0.4 8.34 3.8 020 31.0
29 0 3.7 11.93 3.3 010 27.8
30 0 0.2 6.98 1.3 040 24.5
31 0 8.4 15.48 2.1 060 30.6
Mean/Total 89 168.2 12.25 82.7 070 26.7
Normal* 224.9§ 172.2 10.89 83.7 070 26.0
StationHong   Kong
International   Airport
King's   Park Waglan   Island^

The minimum pressure recorded at the Hong Kong Observatory was 1012.8 hectopascals at 1442 HKT on 13 December.

The maximum air temperature recorded at the Hong Kong Observatory was 25.9 degrees C at 1548 HKT on 5 December.

The minimum air temperature recorded at the Hong Kong Observatory was 11.5 degrees C at 0457 HKT on 28 December.

The maximum gust peak speed recorded at Waglan Island was 81 kilometres per hour from 010 degrees at 0753 HKT on 27 December.

The maximum 1-minute mean rainfall rate recorded at King's Park was 54 millimetres per hour at 0906 HKT on 21 December.

# 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

§ 1997-2015 Mean value

Last revision date: <03 Jan 2017>