The climate of Mai Chau, Hoa Binh is tropical monsoon. The average annual temperature is 18°C with a maximum of 29°C in July and a minimum of 16°C in January.
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In general, Mai Chau’s climate is quite good around the year. It rains less and the humidity is lower than other Northern Vietnam cites. The best weather extends from September to May with temperatures ranging from 15°C to 30°C. Tourists should visit Mai Chau village by this period.
It can be quite cold during winter from November to the end of February. From June to September, it has the monsoon with stronger breezes and higher humidity. The temperatures are warmer in this time, varying between 25°C and 35°C.
For hot (but not too hot), sunny weather, October-November and February-May are the best times to go. In December, January and sometimes February too, the weather can get pretty chilly. However, the stilt houses have no shortage of fluffy blankets to keep you warm at night; staying cool in the summer, however, is more of an issue. The stilt houses usually have fans but even then so they can get uncomfortably hot between June and September. In addition, these months are the rainiest, which makes outdoor exploring more problematic.
There is a market on Sundays which brings together different minority groups from the surrounding area, but given the higher numbers of weekend tourists (see ‘Stay away from’) this is not necessarily a reason to time your visit for a Sunday.