D2 CLIMATIC Climatic data at Bol Dune. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann. Mean temp. [deg C]* 14.0 15.1 19.4 24.2 25.9 26.6 25.3 24.2 24.7 22.6 18.4 14.6 21.3 Precipitation [mm]* 0 0 0 1 12 18 76 210 56 12 0 0 384 *1 13-year mean. *2 8-year mean. Source: Questionnaire filled by Dr. M. Nakashima, International Development Centre of Japan, Tokyo.