✨ Meteorological Observations
RESULTS OF METEOROLOGICAL OBSERVATIONS,
TAKEN AT CHRISTCHURCH, CANTERBURY, NEW ZEALAND, FOR THE YEAR ENDING 31ST DECEMBER, 1865.
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. | 1865. | 1864. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean atmospheric pressure— | Mean for year. | |||||||||||||
| Barometer reduced to 32° Fab. | 29·792 | 29·909 | 29·881 | 29·902 | 29·636 | 29·701 | 29·788 | 29·834 | 29·719 | 29·674 | 29·705 | 29·759 | 29·775 | 29·888 |
| Approximate range | 1·079 | ·971 | ·995 | ·911 | 1·380 | 1·616 | 1·375 | 1·552 | 1·038 | 1·076 | 1·264 | ·760 | 1·251 | 1·080 |
| Mean pressure of vapour in | ·451 | ·468 | ·414 | ·340 | ·291 | ·257 | ·267 | ·235 | ·281 | ·322 | ·391 | ·353 | Mean | ·328 |
| inches of mercury | ||||||||||||||
| Mean of highest temperature | 74·1 | 73·7 | 67·8 | 62·8 | 54·1 | 52·3 | 49·4 | 53·5 | 57·1 | 60·4 | 68·3 | 68·7 | 61·8 | 62·5 |
| in shade (Fah.) | Mean | |||||||||||||
| Mean of lowest temperature | 52·2 | 54·2 | 52·3 | 46·5 | 40·2 | 35·5 | 33·6 | 34·1 | 40·7 | 40·2 | 45·4 | 49·5 | 43·7 | 44·2 |
| in shade | Mean | |||||||||||||
| Approximate mean temperature | 63·1 | 63·9 | 60·0 | 54·6 | 47·3 | 43·9 | 41·5 | 43·8 | 48·9 | 50·4 | 56·8 | 59·1 | 52·8 | 53·3 |
| in shade | Mean | |||||||||||||
| Maximum in shade | 89·4 | 87·6 | 81·6 | 70·2 | 62·9 | 61·7 | 58·4 | 62·5 | 70·5 | 70·3 | 81·7 | 89·4 | (a) Max. | 88·7 |
| Minimum in shade | 39·9 | 44·8 | 39·1 | 38·1 | 29·4 | 25·3 | 26·2 | 29·8 | 32·0 | 36·8 | 37·3 | 25·3 | (b) Min. | 26·2 |
| Range | 49·5 | 42·8 | 42·5 | 32·1 | 33·5 | 36·4 | 32·2 | 32·7 | 38·5 | 33·5 | 44·4 | 42·8 | 40·0 | 41·0 |
| Mean daily range | 21·8 | 19·4 | 15·4 | 16·8 | 14·6 | 16·4 | 15·8 | 19·3 | 16·4 | 20·1 | 22·8 | 18·1 | Mean | 17·9 |
| Greatest daily range | 33·7 | 35·8 | 32·6 | 28·2 | 21·8 | 22·7 | 24·1 | 23·9 | 32·0 | 38·0 | 31·6 | 38·0 | (c) Max. | 37·8 |
| Least daily range | 12·0 | 11·4 | 6·4 | 4·1 | 6·4 | 7·5 | 5·3 | 7·6 | 7·3 | 9·9 | 9·3 | 11·2 | (d) Min. | 4·1 |
| Mean solar radiation (temperature in sun's rays) | 113·0 | 110·1 | 97·6 | 81·8 | 66·1 | 64·5 | 61·5 | 70·3 | 75·5 | 81·6 | 100·1 | 105·9 | 85·7 Mean | 87·8 |
| Maximum in ditto | 135·1 | 129·1 | 119·0 | 101·6 | 73·2 | 77·8 | 75·8 | 89·0 | 93·7 | 95·3 | 118·1 | 129·4 | (e) Max. | 143·9 |
| Mean nocturnal radiation (exposed therm. on grass) | 47·1 | 49·7 | 47·2 | 40·5 | 35·3 | 30·8 | 30·6 | 28·0 | 36·3 | 34·6 | 38·0 | 43·6 | 38·4 Mean | 39·8 |
| Minimum on ditto | 31·8 | 37·4 | 32·5 | 29·4 | 22·5 | 21·6 | 20·4 | 17·9 | 22·7 | 23·8 | 24·8 | 27·6 | (f) Min. | 17·3 |
| Mean temperature of evaporation | 57·9 | 58·7 | 55·9 | 50·5 | 44·8 | 41·7 | 39·5 | 40·6 | 45·2 | 45·9 | 51·1 | 54·6 | 48·8 Mean | 49·3 |
| Mean temperature of dew point | 55·8 | 56·8 | 53·5 | 48·0 | 43·8 | 40·7 | 38·2 | 38·4 | 43·0 | 46·5 | 51·5 | 46·6 | Mean | 46·7 |
| Mean degree of moisture (saturation = 100) | 75 | 77 | 78 | 86 | 88 | 88 | 89 | 80 | 76 | 68 | 73 | 78 | Mean | 77 |
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Canterbury Provincial Gazette 1866, No 17
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Meteorological Observations for Christchurch, 1865
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