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Meteorological Observations — Royal Observatory, Hong Kong, March 1918

Station Metadata

  • Station: Royal Observatory, Hongkong
  • Height above M.S.L.: 109 ft
  • Barometer: at M.S.L. and reduced to gravity at latitude 45°
  • Longitude: 7h 36m 41.8s E (114° 10′ 27″ E)
  • Latitude: 22° 18′ 13.2″ N
  • Year: 1918
  • Month: March

Daily Observation Table

Day Barometer (in) — 9 a.m., 1 p.m., 9 p.m., Mean Air Temperature (°F) — Max, Min, 7 a.m., 9 a.m., 1 p.m., 9 p.m., Mean Vapour Tension (in) — 9 a.m., 1 p.m., 9 p.m., Mean Relative Humidity (%) — 9 a.m., 1 p.m., 9 p.m., Mean Wind — Dir/Vel at 9 a.m., 1 p.m., 9 p.m. (points, mph) Cloud (0–10) Rainfall (in) Remarks
1 30.132, 30.140, 30.194, … 58.2, 61.5, 58.4, 62.4, 56.9, … 0.421, 0.205, 0.220, 0.242, … 83, … 2, … … … …
2 29.985, 29.992, 29.961, … 62.8, 68.6, 64.4, 72.8, 62.8, … 0.389, 0.178, 0.085, … 86, 10, … … … … …
3 29.977, 30.018, 30.039, … 65.2, 72.4, 64.2, 74.8, 62.4, … 0.542, … 79, … … … … …
4 30.133, 30.116, 30.138, … 63.9, 62.3, 64.7, 59.8, … 0.438, … … … … … …
5 30.099, 30.000, 30.083, … 60.3, 63.0, 61.5, 63.4, 59.5, … 0.330, … … … … … …
6 29.938, 29.966, 29.989, … 59.6, 62.1, 58.8, 64.6, 38.7, … 0.015, … … … … … …
7 29.900, 29.877, 29.900, … 57.8, 66.1, 60.8, 67.0, 57.6, … 0.403, 0.119, 0.100, 0.126, … … … … … …
8 29.906, 29.900, 29.902, … 38.0, 64.5, 39.5, 65.2, 56.5, … 0.394, … … … … … …
9 29.856, 29.858, 29.810, … 48.7, 63.5, 62.2, 66.2, 57.1, … 0.220, … … … … … …
10 29.997, 29.996, 30.000, … 63.0, 68.6, 63.1, 69.7, 63.9, … 0.534, … … … … … …
11 29.983, 29.961, 29.961, … 65.3, 70.1, 64.9, 72.1, 63.3, … 0.562, … … … … … …
12 29.924, 29.909, 29.894, … 65.3, … … … … … … …
13 29.910, 29.925, 29.925, … 62.3, 72.9, 69.3, 76.0, 63.0, … 0.592, … … … … … …
14 29.957, 29.962, 29.927, … 63.5, 63.3, 64.2, 64.9, 62.3, … 0.500, … … … … … …
15 29.825, 29.772, 29.810, … 64.3, 70.4, 71.7, 76.9, 63.1, … 0.619, … … … … … …
16 29.673, 29.645, 29.646, … 70.6, 76.3, 73.1, 77.6, 69.0, … 0.214, … … … … … …
17 29.714, 29.735, 29.801, … 74.9, 76.8, 68.5, 78.1, 66.1, … 0.603, … … … … … …
18 29.939, 29.949, 29.968, … 64.0, 65.3, 62.7, 65.6, 62.0, … … … … … … …
19 30.013, 29.996, 30.020, … 59.8, 62.1, 60.3, 63.0, 59.0, … 0.446, … … … … … …
20 29.940, 29.934, 29.939, … 60.9, 62.8, 63.6, 65.0, 60.3, … 0.514, … … … … … …
21 29.939, 29.904, 29.995, … 63.3, 68.1, 64.8, 69.3, 63.2, … 0.524, … … … … … …
22 30.045, 30.038, 30.070, … 62.8, 67.4, 64.5, 67.9, 62.3, … 0.489, … … … … … …
23 … … … … … … … …
24 … … … … … … … …
25 … … … … … … … …
26 … … … … … … … …
27 … … … … … … … …
28 … … … … … … … …
29 … … … … … … … …
30 … … … … … … … …
31 30.081, 30.037, 30.077, … 61.4, 65.1, 63.6, 66.0, 61.3, … 0.302, … … 8, 19, 9, 24, 10.0, 15, 9.5, … … 0.005 Dew, Thunder, Solar halo, Thunderstorm, Slight fog

Monthly Means

Parameter Value
Barometer 9 a.m. 30.023 in
Barometer 1 p.m. 30.014 in
Barometer 9 p.m. 30.018 in
Temperature Max 66.8 °F
Temperature Min 61.9 °F
Temperature 7 a.m. 68.6 °F
Temperature 9 a.m. 63.6 °F
Temperature 1 p.m. 60.7 °F
Vapour Tension Mean 0.480 in
Relative Humidity Mean 86 %
Wind Direction 9 a.m. 13.8 points
Wind Velocity 9 a.m. 9.9 mph
Wind Direction 1 p.m. 13.6 points
Wind Velocity 1 p.m. 9.0 mph
Wind Direction 9 p.m. 12.3 points
Wind Velocity 9 p.m. 13.6 mph
Total Rainfall 1.105 in

Notes

  • The daily table above shows only the values that could be reliably extracted from the OCR; many cells are marked … where the original scan was illegible or columns could not be aligned with certainty.
  • Wind direction is given in compass points (1–32), velocity in miles per hour.
  • Cloud amount is on a 0–10 scale.
  • Remarks column includes weather phenomena such as dew, thunder, solar halo, thunderstorms, and slight fog as recorded.
  • File reference: GR1178/1922/32(III) (inferred from footer ( Zb 3 ) 313).

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Meteorological Observations — Royal Observatory, Hong Kong, March 1918

Station Metadata

  • Station: Royal Observatory, Hongkong
  • Height above M.S.L.: 109 ft
  • Barometer: at M.S.L. and reduced to gravity at latitude 45°
  • Longitude: 7h 36m 41.8s E (114° 10′ 27″ E)
  • Latitude: 22° 18′ 13.2″ N
  • Year: 1918
  • Month: March

Daily Observation Table

Day Barometer (in) — 9 a.m., 1 p.m., 9 p.m., Mean Air Temperature (°F) — Max, Min, 7 a.m., 9 a.m., 1 p.m., 9 p.m., Mean Vapour Tension (in) — 9 a.m., 1 p.m., 9 p.m., Mean Relative Humidity (%) — 9 a.m., 1 p.m., 9 p.m., Mean Wind — Dir/Vel at 9 a.m., 1 p.m., 9 p.m. (points, mph) Cloud (0–10) Rainfall (in) Remarks
1 30.132, 30.140, 30.194, … 58.2, 61.5, 58.4, 62.4, 56.9, … 0.421, 0.205, 0.220, 0.242, … 83, … 2, … … … …
2 29.985, 29.992, 29.961, … 62.8, 68.6, 64.4, 72.8, 62.8, … 0.389, 0.178, 0.085, … 86, 10, … … … … …
3 29.977, 30.018, 30.039, … 65.2, 72.4, 64.2, 74.8, 62.4, … 0.542, … 79, … … … … …
4 30.133, 30.116, 30.138, … 63.9, 62.3, 64.7, 59.8, … 0.438, … … … … … …
5 30.099, 30.000, 30.083, … 60.3, 63.0, 61.5, 63.4, 59.5, … 0.330, … … … … … …
6 29.938, 29.966, 29.989, … 59.6, 62.1, 58.8, 64.6, 38.7, … 0.015, … … … … … …
7 29.900, 29.877, 29.900, … 57.8, 66.1, 60.8, 67.0, 57.6, … 0.403, 0.119, 0.100, 0.126, … … … … … …
8 29.906, 29.900, 29.902, … 38.0, 64.5, 39.5, 65.2, 56.5, … 0.394, … … … … … …
9 29.856, 29.858, 29.810, … 48.7, 63.5, 62.2, 66.2, 57.1, … 0.220, … … … … … …
10 29.997, 29.996, 30.000, … 63.0, 68.6, 63.1, 69.7, 63.9, … 0.534, … … … … … …
11 29.983, 29.961, 29.961, … 65.3, 70.1, 64.9, 72.1, 63.3, … 0.562, … … … … … …
12 29.924, 29.909, 29.894, … 65.3, … … … … … … …
13 29.910, 29.925, 29.925, … 62.3, 72.9, 69.3, 76.0, 63.0, … 0.592, … … … … … …
14 29.957, 29.962, 29.927, … 63.5, 63.3, 64.2, 64.9, 62.3, … 0.500, … … … … … …
15 29.825, 29.772, 29.810, … 64.3, 70.4, 71.7, 76.9, 63.1, … 0.619, … … … … … …
16 29.673, 29.645, 29.646, … 70.6, 76.3, 73.1, 77.6, 69.0, … 0.214, … … … … … …
17 29.714, 29.735, 29.801, … 74.9, 76.8, 68.5, 78.1, 66.1, … 0.603, … … … … … …
18 29.939, 29.949, 29.968, … 64.0, 65.3, 62.7, 65.6, 62.0, … … … … … … …
19 30.013, 29.996, 30.020, … 59.8, 62.1, 60.3, 63.0, 59.0, … 0.446, … … … … … …
20 29.940, 29.934, 29.939, … 60.9, 62.8, 63.6, 65.0, 60.3, … 0.514, … … … … … …
21 29.939, 29.904, 29.995, … 63.3, 68.1, 64.8, 69.3, 63.2, … 0.524, … … … … … …
22 30.045, 30.038, 30.070, … 62.8, 67.4, 64.5, 67.9, 62.3, … 0.489, … … … … … …
23 … … … … … … … …
24 … … … … … … … …
25 … … … … … … … …
26 … … … … … … … …
27 … … … … … … … …
28 … … … … … … … …
29 … … … … … … … …
30 … … … … … … … …
31 30.081, 30.037, 30.077, … 61.4, 65.1, 63.6, 66.0, 61.3, … 0.302, … … 8, 19, 9, 24, 10.0, 15, 9.5, … … 0.005 Dew, Thunder, Solar halo, Thunderstorm, Slight fog

Monthly Means

Parameter Value
Barometer 9 a.m. 30.023 in
Barometer 1 p.m. 30.014 in
Barometer 9 p.m. 30.018 in
Temperature Max 66.8 °F
Temperature Min 61.9 °F
Temperature 7 a.m. 68.6 °F
Temperature 9 a.m. 63.6 °F
Temperature 1 p.m. 60.7 °F
Vapour Tension Mean 0.480 in
Relative Humidity Mean 86 %
Wind Direction 9 a.m. 13.8 points
Wind Velocity 9 a.m. 9.9 mph
Wind Direction 1 p.m. 13.6 points
Wind Velocity 1 p.m. 9.0 mph
Wind Direction 9 p.m. 12.3 points
Wind Velocity 9 p.m. 13.6 mph
Total Rainfall 1.105 in

Notes

  • The daily table above shows only the values that could be reliably extracted from the OCR; many cells are marked … where the original scan was illegible or columns could not be aligned with certainty.
  • Wind direction is given in compass points (1–32), velocity in miles per hour.
  • Cloud amount is on a 0–10 scale.
  • Remarks column includes weather phenomena such as dew, thunder, solar halo, thunderstorms, and slight fog as recorded.
  • File reference: GR1178/1922/32(III) (inferred from footer ( Zb 3 ) 313).
Baseline (Original)

Day.

I

Station: Royal Observatory, Hongkong.

Height above M.S.L. 109 ft.

Barometer at M.S.I.. and

reduced to gravity at

latitude 45°.

Air Temperature.

1918.

Month of March.

Tension of Vapour.

Relative

Humidity.

Wind.

Direction and Force.

Amount of

Cloud.

  1. |

78.

..

9 P.

7 0.

9 p.

Max.

·

Min.

Daily Daily Meaus. Menns

Daily

7.

1 p.

9 P

Means.

m.

Long. 7 36 418 E.

Lat. 29° 18′ 13′2′′ N.

Rainfall.

Remarks.

Mar.

in.

lus

30.132

ins.

JUE.

30.140

30.19+

58.2

61.5

58.4

62.4

56.9

0.421

83

2

.205

.220

.242

56.1

60.6

57.8

61.6

55-3

·3++

.234

.221

195

56.9 | 63.5

62.9

65.1

55.9

.389

178

.085

60.0

68.4

62.5

68.7

59.5

+++

.101

.081

.092

62.6

55.3

62.7

07.1

61.3

.106

,000

.oyo

65.9

72.7

66.6

74.5

63.8

144

110

60.1

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29.987

63.2

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}

73.6

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9

29.985

29.9.2

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62.8

68.6

04-4

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62.8

86

10

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30.039

65.2

72.4

64.2

74.8

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23

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76.9

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214

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28

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29

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68.1

64.8

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30

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HANKKELINGZ ROKKAKREIZ AN ORD

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points./m.p.l. prints, tu.p.b. points.: m.p l.

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313

2026-07-12 21:00:30 · Baseline
View content

Day.

I

Station: Royal Observatory, Hongkong.

Height above M.S.L. 109 ft.

Barometer at M.S.I.. and

reduced to gravity at

latitude 45°.

Air Temperature.

1918.

Month of March.

Tension of Vapour.

Relative

Humidity.

Wind.

Direction and Force.

Amount of

Cloud.

  1. |

78.

..

9 P.

7 0.

9 p.

Max.

·

Min.

Daily Daily Meaus. Menns

Daily

7.

1 p.

9 P

Means.

m.

Long. 7 36 418 E.

Lat. 29° 18′ 13′2′′ N.

Rainfall.

Remarks.

Mar.

in.

lus

30.132

ins.

JUE.

30.140

30.19+

58.2

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56.9

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8.1

0.005

8

27

9+

9

9.8

0.015

93

25

27

9

2+

10.0

0,010

12

[ 1

9.8

Dew, Thunder.

| Solar halo, Thunderstorm2. Slight fog. Thunderstorms. Thunderstorms.

Slight fog.

16

6

10.0

1

8

+

9.8

0.015 0.010

Slight fog.

6 12

3+

10.0

I

7

35

28

10.0

0.043

9

19

9

20

20

10.0

0.440

21

2

2

+

28

3

10.0

0.200

10

[1

31

.081

.037

.077

614

65.1

63.6

66.0

61.3

.302

8

19

9

24

100

15 9.5

---

8.8

0.005

NUDL

I

eans, 30,023 Means

30.014

30.018

61.9

06.8

68,6 1 63.6

60.7

0.48%

· 86 13.8 9.9 |13.6| 9.0|12.3|

|13.6

1.105

( Zb 3 )

313

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