The sources give seasons and a few figures, not a monthly table from the India Meteorological Department, so this guide describes the seasons and gives no figure for each month. The two main sources disagree on rainfall, and we show both.
The park is open for about half the year, so check the dates with the park office before you book. The Central Range at Kohora and the Western Range at Bagori are the most visited; read the park guide and things to do in Kaziranga.
Copy the one day at Kaziranga and read how to reach Kaziranga.
The Assam Tourism page says November to April, with the best sightseeing from late February to early April. Wikivoyage says winter, November to February, is good for animals because the grass is burned off, and also for migratory birds. It says the park is closed from May to October because of the Brahmaputra floods.
The Brahmaputra floods the park. Wikipedia says three-quarters of the western region is under water in July and August, each flood covers most of the park for 5 to 10 days, and animals move to high ground outside. Wikivoyage says the park is closed from May to October.
By Wikipedia's account winter at Kohora, November to February, is mild and dry: highs average 25 °C, lows 5 °C. Summer from March to May reaches 37 °C. It gives about 2,220 mm of rain a year; the Assam Tourism page says about 1,320 mm and 15 to 38 °C.
