Climate.
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| CENTRAL METEOROLOGICAL OBSERVATORY. 35° 41' N. 139° 40' E. LONG HEIGHT 70 FEET. 25 YEARS, 1876-1900. (INCHES AND FAHRENHEIT DEGREES.) | |||||||||||||
| Jan. | Feb. | March | April | May | June | July | Aug. | Sept. | Oct | Nov. | Dec. | Year. | |
| Mean Temperature … | 36.9 | 38.4 | 44.2 | 54.3 | 61.9 | 68.8 | 758.8 | 78.2 | 71.6 | 60.3 | 50.1 | 41.3 | 26.8 |
| Mean Maximum Temp. … | 46.8 | 47.5 | 53.4 | 62.9 | 70.2 | 76.1 | 83.0 | 86.0 | 78.9 | 68.9 | 60.1 | 52.0 | 65.5 |
| Mean Minimum Temp. … | 28.6 | 30.4 | 35.3 | 45.6 | 53.5 | 62.2 | 69.6 | 71.8 | 65.5 | 53.1 | 41.7 | 32.4 | 49.1 |
| Absolute Maximum Temp. … | 97.9 14 July, 1891. | ||||||||||||
| Absolute Minimum Temp. … | 15.4 13 Jan., 1876. | ||||||||||||
| Mean Rainfall … | 2.14 | 3.03 | 4.32 | 5.04 | 5.91 | 6.52 | 5.01 | 4.37 | 8.12 | 7.07 | 4.35 | 2.02 | 57.90 |
| Number of Rainy Days … | 7.2 | 9.1 | 12.4 | 14.8 | 13.3 | 14.4 | 14.1 | 11.8 | 16.2 | 13.1 | 9.0 | 6.3 | 141.6 |
| Days with Snow … | 4.0 | 4.5 | 2.8 | 0.1 | — | — | — | — | — | — | 0.2 | 1.2 | 12.8 |
| Mean Barometer (reduced to Freezing point) … |
29.96 | 29.97 | 29.95 | 29.04 | 29.84 | 29.77 | 29.77 | 29.79 | 29.87 | 29.98 | 29.99 | 29.95 | 29.90 |
| Mean Direction of Wind … | N 22° W | N 16° W | N 8° W | N 51° E | S 44° E | S 39° E | S 20° E | S 21° E | N 47° E | N 4° W | N 14° W | N 25° W | N 1° W |
The number of "rainy days" includes all days on which more than a tenth of a millimetre of rain fell, and also those on which any snow or hail fell. The "days with snow" are those on which snow fell, regardless of the question whether rain also did or did not fall. Few days are uninterupptedly snowy at Tōkyō—perhaps only two or three in the year.
