✨ Meteorological Observations
RESULTS OF METEOROLOGICAL OBSERVATIONS,
TAKEN AT CHRISTCHURCH, CANTERBURY, NEW ZEALAND, FOR THE YEAR ENDING 31ST DECEMBER, 1864.
Latitude, 43° 40’ S. Longitude, 172° 51’ E. Height above Sea Level, 21 feet.
| January. | February. | March. | April. | May. | June. | July. | August. | September. | October. | November. | December. | YEAR. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean atmospheric pressure:— | |||||||||||||
| Barometer reduced to 32° Fah. | 29·690 | 29·865 | 29·986 | 30·074 | 29·794 | 29·902 | 30·003 | 29·856 | 29·816 | 29·920 | 29·707 | 29·965 | 29·888 Mean for year. |
| Approximate range | ·833 | 1·308 | 1·140 | 1·049 | 1·811 | 1·329 | 1·225 | 1·163 | 1·124 | ·986 | ·741 | ·765 | 1·080* Mean ,, |
| Mean of highest day temperature in shade (Fah.) | 72·0 | 70·9 | 67·1 | 66·9 | 60·6 | 51·5 | 57·8 | 49·7 | 59·1 | 61·0 | 65·6 | 51·6 | 62·5 Mean ,, |
| Mean of lowest night temperature in shade | 51·6 | 52·4 | 46·0 | 46·8 | 38·2 | 36·2 | 35·7 | 35·6 | 41·3 | 49·6 | 46·9 | 53·7 | 44·2 Mean ,, |
| Approximate mean temperature in shade | 61·8 | 61·6 | 56·5 | 56·8 | 49·4 | 43·8 | 46·7 | 42·6 | 50·2 | 53·2 | 56·1 | 60·9 | 53·3 Mean ,, |
| Maximum in shade | 83·6 | 83·7 | 80·5 | 77·8 | 71·5 | 63·4 | 64·3 | 63·7 | 69·4 | 77·6 | 74·8 | 81·5 | 88·7 (a) Max. ,, |
| Minimum in shade | 48·7 | 38·8 | 36·6 | 31·6 | 28·2 | 28·2 | 29·6 | 26·2 | 30·0 | 33·8 | 35·1 | 53·3 | 26·2 (b) Min. ,, |
| Range | 39·9 | 49·9 | 43·9 | 45·7 | 43·3 | 35·2 | 36·9 | 37·5 | 39·4 | 43·8 | 39·7 | 39·6 | 61·0 Mean ,, |
| Mean daily range | 20·3 | 18·6 | 21·0 | 21·8 | 22·6 | 15·3 | 15·6 | 14·1 | 17·9 | 15·5 | 18·5 | 14·4 | 17·9 Mean ,, |
| Greatest daily range | 31·0 | 30·9 | 27·8 | 32·2 | 37·7 | 29·8 | 26·2 | 30·8 | 23·1 | 29·7 | 25·6 | 25·2 | 37·8 (c) Max. ,, |
| Mean solar radiation (temperature in sun’s rays) | 102·8 | 93·2 | 92·6 | 87·9 | 77·5 | 60·2 | 63·0 | 65·6 | 85·7 | 91·3 | 103·7 | 115·1 | 87·3 Mean ,, |
| Maximum in ditto | 112·9 | 123·6 | 107·0 | 101·1 | 87·9 | 82·8 | 75·5 | 83·3 | 97·6 | 108·7 | 128·1 | 143·9 | 143·9 (d) Max. ,, |
| Mean nocturnal radiation (exposed therm. on grass) | 46·8 | 48·3 | 37·0 | 38·3 | 28·3 | 30·0 | 31·3 | 29·6 | 35·1 | 42·2 | 44·2 | 51·3 | 39·3 Mean ,, |
| Minimum on ditto | 37·0 | 34·0 | 24·4 | 21·1 | 19·9 | 19·6 | 22·9 | 17·3 | 21·0 | 26·6 | 30·8 | 38·0 | 17·3 (e) Min. ,, |
| Mean temperature of evaporation | 56·0 | 56·7 | 52·3 | 52·8 | 44·8 | 41·9 | 41·6 | 40·4 | 46·7 | 49·6 | 51·6 | 56·1 | 49·3 Mean ,, |
| Mean temperature of dew point | 51·5 | 52·8 | 49·8 | 49·3 | 42·9 | 40·8 | 39·2 | 44·5 | 46·5 | 49·1 | 53·6 | 53·6 | 46·7 Mean ,, |
| Mean degree of moisture (saturation = 100) | 66 | 73 | 75 | 75 | 77 | 87 | 84 | 74 | 78 | 75 | 77 | 77 | 77 Mean ,, |
| Mean pressure of vapour (in inches of mercury) | ·386 | ·404 | ·363 | ·358 | ·280 | ·259 | ·248 | ·297 | ·322 | ·352 | ·352 | ·418 | ·328 Mean ,, |
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Canterbury Provincial Gazette 1865, No 15
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Meteorological Observations for the Year
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