Ranchi is warmest in May, averaging 38° by day and 25° at night. The wettest month is August with 360 mm, and the year brings about 1484 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 22° | 9° | 12 mm | 10.7 h | Sightseeing |
| February | 26° | 12° | 20 mm | 11.2 h | Beach weather |
| March | 32° | 17° | 40 mm | 11.8 h | Beach weather |
| April | 37° | 22° | 24 mm | 12.5 h | Very hot |
| May | 38° | 25° | 90 mm | 13.1 h | Very hot |
| June | 35° | 25° | 207 mm | 13.4 h | Rainy season |
| July | 31° | 23° | 301 mm | 13.3 h | Rainy season |
| August | 29° | 23° | 360 mm | 12.8 h | Rainy season |
| September | 28° | 22° | 303 mm | 12.1 h | Rainy season |
| October | 27° | 18° | 99 mm | 11.4 h | Beach weather |
| November | 24° | 13° | 12 mm | 10.9 h | Sightseeing |
| December | 22° | 10° | 16 mm | 10.6 h | Sightseeing |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: February, March and October — highs around 28°, nights no colder than 12°, and at most 99 mm of rain in a month.
Walking the city: January, November and December — highs of 22–24° and no more than 16 mm of rain a month.
Wet season: June, July, August and September — up to 360 mm in a single month.
Serious heat: In April and May the average high reaches 38°.