Skip to main content
Hong Kong Observatory Brand Hong Kong - Asia's world city
GovHK Traditional Chinese Simplified Chinese Search
Search Site Map Contact Us
Print Version
Back
Print Version

EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
MARCH 2019 (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 1016.1 22.4 20.8 19.6 18.8 89 91 0.4
2 1012.7 23.9 21.5 19.9 19.2 87 84 Trace
3 1011.3 23.5 21.5 20.0 19.1 87 85 6.3
4 1013.7 22.6 20.9 19.3 17.7 82 83 10.2
5 1012.1 26.7 22.2 17.7 20.0 88 89 30.3
6 1013.2 22.0 20.5 19.6 19.2 92 91 45.5
7 1015.8 20.5 17.9 15.5 16.7 93 89 29.6
8 1016.0 17.4 16.5 15.1 15.2 92 95 11.5
9 1012.2 18.7 17.8 17.0 17.0 95 95 14.5
10 1013.6 18.5 17.7 17.0 15.6 87 86 4.6
11 1014.9 22.6 18.4 15.5 14.9 81 58 7.6
12 1016.4 24.2 20.1 17.4 15.9 77 15 -
13 1017.8 22.9 20.8 19.1 15.3 71 66 -
14 1018.3 21.5 20.4 19.8 17.4 83 95 6.4
15 1020.6 20.0 18.7 17.3 15.4 81 89 0.4
16 1020.0 22.8 20.2 18.8 13.2 65 85 -
17 1018.9 22.7 20.9 19.7 16.7 77 85 -
18 1016.8 24.7 21.7 19.7 18.5 82 70 -
19 1014.8 27.4 23.4 20.7 20.5 84 42 -
20 1013.0 25.0 23.5 22.1 21.3 88 86 -
21 1011.4 27.2 25.3 23.4 21.8 81 79 -
22 1012.0 27.5 25.8 24.8 22.9 84 84 Trace
23 1017.1 25.0 20.0 17.4 18.1 89 99 3.3
24 1018.0 18.2 17.5 16.6 15.5 88 100 0.3
25 1016.8 23.3 20.5 17.9 17.8 85 92 1.0
26 1018.5 24.6 21.9 20.8 19.2 85 86 -
27 1017.1 25.3 22.3 20.3 19.0 82 77 Trace
28 1012.6 27.8 24.4 22.2 21.4 84 57 -
29 1010.5 26.5 24.4 23.1 21.9 86 81 6.9
30 1013.3 24.0 23.1 22.5 20.6 86 81 Trace
31 1016.8 22.9 21.4 20.2 18.7 85 93 7.7
Mean/Total 1015.2 23.3 21.0 19.4 18.2 84 81 186.5
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 2019 (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 0 0.4 7.06 1.6 060 30.6
2 0 5.0 15.87 2.5 070 23.3
3 9 4.2 10.91 2.0 010 8.0
4 3 3.2 12.57 2.2 080 26.0
5 0 2.0 11.56 1.9 070 22.7
6 1 - 2.87 2.4 040 24.3
7 0 - 1.91 1.8 040 39.5
8 0 - 2.70 0.1 060 46.0
9 2 - 1.98 0.6 050 25.1
10 2 - 3.53 0.8 360 17.3
11 0 6.5 15.54 2.2 360 17.0
12 0 10.7 22.00 3.8 070 21.0
13 0 6.1 16.09 3.3 050 30.0
14 0 - 2.26 1.1 060 32.3
15 0 - 3.77 1.7 010 25.1
16 0 7.1 15.60 4.2 070 34.9
17 0 4.9 15.29 2.9 060 34.0
18 0 5.1 15.33 1.9 060 20.1
19 1 10.0 19.59 3.6 100 9.0
20 0 1.8 10.46 1.4 090 14.1
21 0 4.1 11.87 2.5 160 7.6
22 0 0.9 6.86 2.0 160 13.8
23 0 - 4.37 1.7 060 39.7
24 0 - 3.39 0.5 070 44.9
25 2 2.0 10.79 1.5 060 19.1
26 0 3.2 12.03 2.7 070 26.3
27 0 4.8 15.16 2.0 060 22.8
28 0 6.6 14.99 2.5 030 7.4
29 0 2.0 12.85 2.8 230 14.2
30 0 0.6 8.49 2.8 060 20.0
31 7 0.1 6.36 2.3 070 44.3
Mean/Total 27 91.3 10.13 65.3 060 24.5
Normal* 107.6§ 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 1008.6 hectopascals at 1525 HKT on 29 March.

The maximum air temperature recorded at the Hong Kong Observatory was 27.8 degrees C at 1613 HKT on 28 March.

The minimum air temperature recorded at the Hong Kong Observatory was 15.1 degrees C at 0126 HKT on 8 March.

The maximum gust peak speed recorded at Waglan Island was 75 kilometres per hour from 080 degrees at 2144 HKT on 7 March.

The maximum 1-minute mean rainfall rate recorded at the Hong Kong Observatory was 173 millimetres per hour at 1126 HKT on 6 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

§ 1997-2018 Mean value

Last revision date: <02 Apr 2019>