The climate is temperate year round. Rainfall, occurring mostly from October to April, ranges from 24 inches a year over most of the lowlands to over 40 inches a year in the mountains. A windy season during August and September occasionally brings dust storms.
Average daytime temperatures are in the high 80°F in summer and can reach 100°F in Maseru. In winter, daytime temperatures average in the mid 60°F and at night sometimes drop to the teens in Maseru. Nighttime temperatures are regularly below freezing in June, July and August. Temperatures in the mountains are even more extreme with snowfalls common in winter. The humidity year round is quite low.