Weather in Ranchi in August
India · 20-year averages, August
Shoulder season. August sits in between. You will get good days and you will lose some. You should expect rain on 27 days of the month, which is more days wet than dry.
August ranks 8 of 12 in Ranchi: past the worst of the year but short of November, which is the month to book if the dates are open.
Rain on 27 of the month's 31 days, 11 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 89% nothing dries, including you.
What the averages hide
Averages flatten a month, and this one hides a few things: the day barely swings — 5.7 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 31.7 °C and the coldest night fell to 20.5 °C, and the wettest single day dropped 118 mm — roughly 38% of the month's rain in one day.
August is one of the reliable ones — rainfall has stayed between 182 mm and 453 mm across all twenty years, a narrow enough band that the 312 mm average is something you can plan against rather than merely quote.
Wind is light at 8.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 89% is the real story though — it is the number that decides how the day feels, not the 28.4 °C.
How August sits in the year
Temperatures hold steady either side: 29.6 °C in July, 28.4 here, 27.9 in September. Nothing about the timing within the month matters much. Rain is the thing that moves: September brings 6 days less of it, so pushing the dates later buys drier weather.
Daylight in August
August is at or near the longest days of Ranchi's year: 13 hours of daylight, losing 0.6 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.
An inland climate
With no coast nearby, the year swings a fair way — 30.5 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
August in Ranchi versus nearby
If Ranchi is one option among several, the nearby comparison is worth making. Jamshedpur is the weaker option in August — 2.5 °C warmer, the same number of rain days. Patna is the weaker option in August — 4.3 °C warmer, 4 days less rain.
So: August is a compromise. November is 47 points better and is what Ranchi is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.
Every month in Ranchi
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 23.2 | 8.6 | 3 | 14 | 54 | 10.8 | 95 |
| February | 27.5 | 12 | 3 | 17 | 46 | 11.4 | 93 |
| March | 32.6 | 16.8 | 5 | 22 | 36 | 12 | 67 |
| April | 37.6 | 21.7 | 5 | 25 | 30 | 12.7 | 30 |
| May | 39.1 | 24.3 | 10 | 53 | 39 | 13.2 | 30 |
| June | 34.9 | 24.7 | 19 | 208 | 62 | 13.6 | 29 |
| July | 29.6 | 23.1 | 27 | 349 | 85 | 13.4 | 49 |
| August | 28.4 | 22.8 | 27 | 312 | 89 | 13 | 51 |
| September | 27.9 | 21.8 | 21 | 226 | 88 | 12.3 | 54 |
| October | 26.6 | 18.1 | 9 | 82 | 80 | 11.6 | 83 |
| November | 24.4 | 13.3 | 1 | 6 | 70 | 11 | 98 |
| December | 22.6 | 9.6 | 1 | 8 | 62 | 10.7 | 98 |
See all twelve months in Ranchi, or where else to go in August.
Planning the rest of the trip
- Where to eat & stay in Ranchi every café, restaurant and hotel
- Flight time to Ranchi how long you are actually in the air
- Ranchi time zone and the difference from home
- Days until your trip count down to the departure date