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

Date
March
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 1019.5 22.9 18.8 15.9 12.3 67 72 -
2 1019.2 23.9 19.4 17.2 6.5 45 12 -
3 1017.0 20.1 17.4 15.7 11.0 67 43 -
4 1014.1 21.8 18.7 16.8 13.7 73 76 -
5 1012.4 24.0 20.7 18.7 17.7 83 80 -
6 1013.7 23.5 20.3 17.9 16.6 80 76 Trace
7 1016.5 20.7 18.0 17.1 13.5 75 87 Trace
8 1017.5 17.3 16.3 15.0 13.9 86 89 2.8
9 1015.7 19.6 17.0 16.0 12.2 74 88 Trace
10 1012.5 19.2 17.8 16.4 16.1 90 89 Trace
11 1015.1 18.4 17.5 16.7 15.5 88 91 Trace
12 1014.3 19.5 18.4 17.0 16.8 90 92 1.0
13 1011.8 24.4 21.7 19.4 20.3 92 86 -
14 1015.8 22.0 19.1 16.8 18.2 94 93 8.5
15 1018.2 17.9 16.8 16.2 12.4 75 88 Trace
16 1016.4 19.0 17.8 16.8 13.8 78 88 Trace
17 1017.2 20.4 18.1 17.0 15.8 86 88 Trace
18 1017.8 20.1 18.9 17.4 17.2 90 91 0.3
19 1017.3 20.6 19.8 18.9 18.9 94 99 10.7
20 1015.1 27.1 21.9 18.6 19.4 86 61 Trace
21 1015.0 27.6 22.9 19.1 20.2 85 69 0.6
22 1014.1 19.7 18.8 17.6 16.8 88 88 0.9
23 1015.0 24.6 21.2 19.0 18.3 84 83 -
24 1016.3 22.4 20.8 18.9 17.9 83 85 Trace
25 1017.2 23.4 20.2 16.5 17.4 84 82 Trace
26 1022.0 16.9 15.8 13.8 11.6 76 86 1.0
27 1022.7 21.5 18.9 16.3 9.5 55 73 -
28 1019.2 24.9 20.6 18.1 14.9 70 60 -
29 1018.3 23.7 21.7 20.4 18.8 84 88 0.3
30 1017.3 23.1 21.9 21.0 19.9 89 88 Trace
31 1015.3 23.7 20.1 15.5 18.8 92 85 21.9
Mean/Total 1016.4 21.7 19.3 17.3 15.7 81 80 48.0
Normal* 1016.0 21.4 19.1 17.2 15.7 82 79 82.2
Station Hong   Kong   Observatory

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

Date
March
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 7 4.2 13.79 4.1 020 11.3
2 0 10.6 21.54 3.9 010 25.5
3 0 7.6 18.13 3.0 080 32.8
4 0 6.5 16.28 2.7 050 23.4
5 0 1.9 11.11 1.4 040 15.9
6 1 2.1 10.67 3.1 080 17.3
7 4 2.9 10.93 2.4 080 37.8
8 2 - 3.64 1.2 070 28.5
9 2 0.8 6.43 1.3 070 35.2
10 2 0.8 6.32 1.0 050 24.3
11 0 - 4.57 1.0 060 31.7
12 0 - 7.05 0.9 050 27.0
13 2 2.1 11.59 1.7 040 11.9
14 1 - 3.23 1.6 080 31.0
15 0 1.4 10.11 2.1 080 44.4
16 0 0.5 8.71 1.5 070 30.9
17 0 1.0 8.55 1.4 060 34.4
18 2 - 6.93 0.7 060 29.0
19 5 - 3.20 1.2 050 28.5
20 2 8.5 22.04 2.9 060 16.4
21 7 10.4 22.78 4.4 070 19.5
22 1 - 3.91 1.2 080 34.3
23 6 4.0 14.57 2.7 050 16.3
24 0 3.4 14.94 2.4 050 28.5
25 2 0.9 6.92 2.5 020 23.1
26 0 0.1 4.77 2.4 010 31.6
27 0 4.3 16.35 3.2 060 30.1
28 0 9.4 22.12 2.8 060 27.6
29 1 0.7 8.68 1.7 060 27.7
30 3 0.4 8.71 1.7 050 22.5
31 0 0.7 3.34 3.2 010 23.9
Mean/Total 50 85.2 10.71 67.3 060 26.5
Normal* 115.3§ 90.8 9.96 70.5 060 23.0
StationHong   Kong
International   Airport
King's   Park Waglan   Island^

The minimum pressure recorded at the Hong Kong Observatory was 1009.3 hectopascals at 1618 HKT on 13 March.

The maximum air temperature recorded at the Hong Kong Observatory was 27.6 degrees C at 1252 HKT on 21 March.

The minimum air temperature recorded at the Hong Kong Observatory was 13.8 degrees C at 0841 HKT on 26 March.

The maximum gust peak speed recorded at Waglan Island was 72 kilometres per hour from 360 degrees at 2008 HKT on 31 March.

The maximum 1-minute mean rainfall rate recorded at King's Park was 73 millimetres per hour at 0925 HKT on 31 March.

# 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: <05 Apr 2017>