The mean annual temperature is about 77° F. (25° C.), with annual extremes of 89·6° F. (32° C.) and 68° F. (20° C). The following table of the climatic data for the coast of British Nigeria will give a fair idea of the conditions that will be met with in the coast towns of the group of colonies in this region:-- OLD CALABAR. LAT. 4° 58′ N.; LONG. 8° 17′ E. =========+===========+===========+===========+======+ Month | Mean | Mean | Mean | Rela-| | Monthly | Monthly | Monthly | tive | |Temperature| Maxima | Minima |Humid-| | | | | ity | +----+------+----+------+----+------+ Per + | F. | ~C.~ | F. | ~C.~ | F. | ~C.~ | Cent.| ---------+----+------+----+------+----+------+------+ January |83·4|~28·6~| 90 |~32·2~| 68 |~20·0~| 78·8 | February |86·5|~30·3~| 94 |~34·4~| 72 |~22·2~| 78·1 | March |84·8|~29·2~| 94 |~34·4~| 71 |~21·7~| 81·6 | April |85·5|~29·7~| 93 |~33·9~| 71 |~21·7~| 75·8 | May |81·9|~27·8~| 94 |~34·4~| 75 |~23·9~| 77·6 | June |80·8|~27·0~| 92 |~33·3~| 71 |~21·7~| 84·4 | July |77·9|~25·5~| 90 |~32·2~| 70 |~21·1~| 85·8 | August |77·1|~25·0~| 86 |~30·0~| 70 |~21·1~| 88·2 | September|80·8|~27·0~| 92 |~33·3~| 70 |~21·1~| 85·7 | October |82·3|~28·0~| 91 |~32·8~| 70 |~21·1~| 83·6 | November |82·3|~28·0~| 91 |~32·8~| 71 |~21·7~| 83·9 | December |81·9|~27·8~| 89 |~31·7~| 70 |~21·1~| 83·6 | ---------+----+------+----+------+----+------+------+ Year |82·2|~28·0~| 94 |~34·4~| 68 |~20·0~| 82·1 | =========+====+======+====+======+====+======+======+ =========+==============+===== Month | Rainfall | Num- | | ber | | of | |Rainy +------+-------+Days | Ins. | ~Mm.~ | ---------+------+-------+----- January | 2·68| ~68·1~| 1 February | 6·69|~170·0~| 5 March | 7·70|~195·6~| 8 April | 11·01|~279·5~| 10 May | 10·95|~279·0~| 19 June | 32·59|~827·0~| 22 July | 13·61|~345·4~| 25 August | 6·39|~162·4~| 15 September| 11·84|~300·0~| 25 October | 9·38|~238·0~| 17 November | 11·34|~288·3~| 12 December | 1·32| ~33·6~| 1 ---------+------+-------+----- Year |119·50|~303·6~| 150 =========+======+=======+===== The remarkable uniformity of the temperature data is very striking. In the interior of Nigeria, however, much higher temperatures are experienced, especially at the times when the hot Harmattan is blowing off the northern deserts, the noon temperature at such times being rarely under 100° F. (37·8° C). As we get farther south the temperature moderates and the rainfall rapidly diminishes; the mean temperature in Angola being no more than 68° F. (20° C.), while in the elevated interior the climate is neither disagreeable nor unhealthy.