Mussoorie weather in June

June is peak season in Shimla, and the forum's warning is about the last week of it: the monsoon typically arrives around 23 June, with the first heavy showers by the 29th. Before that it is the pleasant hill-station weather people come for — near 23°C by day, 12 at night. After it, rain that sometimes does not stop for 24 hours or more. The record already puts June at sixteen wet days, so "occasional showers of small duration" is the optimistic reading of the month. Late June is also, in a regular's word, haywire — the busiest week of the tourist year, good places packed and on-the-spot prices sky high. Book ahead.

April is peak season in Mussoorie — the forum calls late March and April ideal, and busy with it — because the hill station is the escape from a plains April that is already punishing. Figures vary a lot depending on who is quoting them: posters commonly give 30°C days and 18–22°C nights, while the monthly record for the hill station is cooler, nearer 22°C and 8°C. That is the sort of gap you get between a ridge town and the valley below it, and it is worth knowing both numbers exist. Either way, an evening at 2,000m wants a proper layer in a month India thinks of as hot. Rain is not negligible either, around twelve days. Regulars are candid that hill weather is unpredictable — mostly sunny and pleasant, but not something to rely on.