May is one of the warmer months of the year in Ranchi, with average highs near 40°C and lows around 25.1°C (mean 32.6°C). It is one of the drier months, averaging 66 mm of rainfall and 42% relative humidity across the period.
May is one of the warmer months of the year in Ranchi. Across 45 years of records, the warmest May in Ranchi was 1991 — when the month averaged 35.5°C — while the coldest was 2021 at 29.4°C. Typical May days reach 40°C with nights near 25.1°C. The long-term trend is cooling, about 0.2°C per decade.
May is one of the drier months in Ranchi, averaging 66 mm of rainfall. The wettest May on record was 2021 with 299 mm, while the driest was 1991 at 8 mm.
Relative humidity in Ranchi during May averages 42%. The most humid May was 2021 at 60%, and the least humid was 1991 at 24%.
May receives about 6.3 kWh/m²/day of solar energy in Ranchi. The sunniest May was 1985 at 7.1 kWh/m²/day, and the cloudiest was 2021 at 5.
Average wind speed in Ranchi during May is 2.2 m/s. The windiest May was 1989 at 2.9 m/s, while the calmest were 2011, 2012 and 2023 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.5°C | 33.1°C | 32.6°C | 32.8°C | 31.2°C | -1.3°C |
| Avg High | 40.4°C | 40.7°C | 39.9°C | 40.2°C | 38.2°C | -2.2°C |
| Avg Low | 24.6°C | 25.4°C | 25.4°C | 25.3°C | 24.3°C | -0.3°C |
| Avg Rain | 52 mm | 48 mm | 63 mm | 71 mm | 115 mm | +63 mm |
May temperatures in Ranchi have fallen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 19.1°C (1987) to a record high of 47.3°C (1988).
Rainfall in May is one of the drier months, averaging 66 mm, with a wettest year of 299 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.4°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Ranchi
If your dates are flexible, the more temperate months of February and November tend to be the most comfortable for visiting Ranchi. That said, May — with days averaging 40°C and nights around 25.1°C (mean 32.6°C) and moderate rainfall (66 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 37.3°C | 30.9°C | 24.6°C | 43.1°C | 20.6°C | 113 mm | 53% | 2.1 m/s | 5.3 |
| 2024 | 39.8°C | 32.5°C | 25.2°C | 46.2°C | 21.7°C | 57 mm | 41% | 2.3 m/s | 5.8 |
| 2023 | 39.5°C | 31.8°C | 24.2°C | 43.7°C | 20.9°C | 55 mm | 36% | 1.8 m/s | 6.1 |
| 2022 | 39.2°C | 32.0°C | 24.9°C | 44.0°C | 22.7°C | 80 mm | 51% | 2.5 m/s | 5.8 |
| 2021 ❄️ 🌧️ | 35.3°C | 29.4°C | 23.5°C | 39.8°C | 21.3°C | 299 mm | 60% | 2.6 m/s | 5 |
| 2020 | 37.8°C | 30.6°C | 23.5°C | 43.2°C | 20.4°C | 85 mm | 52% | 2 m/s | 5.8 |
| 2019 | 41.0°C | 32.9°C | 24.8°C | 44.4°C | 20.4°C | 66 mm | 36% | 2.2 m/s | 6.5 |
| 2018 | 39.5°C | 32.0°C | 24.5°C | 42.2°C | 21.6°C | 72 mm | 49% | 2.2 m/s | 5.7 |
| 2017 | 40.8°C | 33.3°C | 25.7°C | 44.7°C | 22.9°C | 98 mm | 44% | 1.9 m/s | 5.9 |
| 2016 | 39.9°C | 32.7°C | 25.5°C | 43.0°C | 23.5°C | 79 mm | 44% | 2.2 m/s | 5.9 |
| 2015 | 39.7°C | 32.1°C | 24.5°C | 43.6°C | 22.5°C | 77 mm | 46% | 1.9 m/s | 6 |
| 2014 | 39.5°C | 32.6°C | 25.8°C | 43.4°C | 22.4°C | 76 mm | 40% | 2.8 m/s | 6.3 |
| 2013 | 40.9°C | 33.3°C | 25.7°C | 44.2°C | 23.1°C | 83 mm | 41% | 2.6 m/s | 6.1 |
| 2012 | 41.0°C | 33.3°C | 25.6°C | 44.2°C | 22.0°C | 32 mm | 34% | 1.8 m/s | 6.7 |
| 2011 | 39.7°C | 32.4°C | 25.2°C | 42.1°C | 22.3°C | 76 mm | 49% | 1.8 m/s | 6.2 |
| 2010 | 40.3°C | 33.1°C | 25.9°C | 44.3°C | 23.2°C | 52 mm | 46% | 2.4 m/s | 6 |
| 2009 | 38.0°C | 31.3°C | 24.5°C | 44.7°C | 22.1°C | 119 mm | 52% | 2.5 m/s | 6 |
| 2008 | 40.0°C | 32.6°C | 25.3°C | 43.7°C | 23.4°C | 56 mm | 42% | 1.9 m/s | 6.2 |
| 2007 | 38.5°C | 31.9°C | 25.2°C | 42.4°C | 23.4°C | 52 mm | 47% | 1.9 m/s | 6.4 |
| 2006 | 38.2°C | 31.7°C | 25.3°C | 43.4°C | 23.5°C | 119 mm | 54% | 2.1 m/s | 6 |
| 2005 | 41.8°C | 33.7°C | 25.6°C | 44.5°C | 23.0°C | 18 mm | 29% | 2 m/s | 6.7 |
| 2004 | 41.0°C | 33.5°C | 26.0°C | 44.9°C | 20.5°C | 36 mm | 37% | 2.1 m/s | 6.5 |
| 2003 | 41.0°C | 32.8°C | 24.7°C | 43.6°C | 21.0°C | 28 mm | 33% | 2.2 m/s | 6.6 |
| 2002 | 41.3°C | 33.5°C | 25.7°C | 45.6°C | 23.2°C | 44 mm | 40% | 2.3 m/s | 6.3 |
| 2001 | 40.4°C | 33.2°C | 25.9°C | 43.7°C | 24.4°C | 69 mm | 47% | 2.2 m/s | 6.1 |
| 2000 | 38.9°C | 32.1°C | 25.3°C | 43.8°C | 21.8°C | 87 mm | 50% | 2.1 m/s | 6.1 |
| 1999 | 38.9°C | 32.0°C | 25.0°C | 45.7°C | 22.3°C | 105 mm | 48% | 2.2 m/s | 6 |
| 1998 | 40.6°C | 32.7°C | 24.7°C | 45.1°C | 21.9°C | 66 mm | 44% | 2.1 m/s | 6.7 |
| 1997 | 40.7°C | 33.0°C | 25.2°C | 43.6°C | 21.5°C | 23 mm | 29% | 2.1 m/s | 6.4 |
| 1996 | 42.7°C | 34.7°C | 26.7°C | 45.6°C | 22.2°C | 11 mm | 25% | 2.5 m/s | 6.6 |
| 1995 | 39.3°C | 32.3°C | 25.3°C | 43.6°C | 22.6°C | 32 mm | 39% | 2.8 m/s | 6 |
| 1994 | 41.1°C | 33.4°C | 25.7°C | 45.5°C | 22.9°C | 38 mm | 36% | 2.2 m/s | 6.8 |
| 1993 | 41.2°C | 33.0°C | 24.8°C | 45.1°C | 23.5°C | 61 mm | 38% | 2 m/s | 6.7 |
| 1992 | 40.1°C | 32.2°C | 24.4°C | 44.8°C | 22.2°C | 68 mm | 37% | 2.4 m/s | 6.6 |
| 1991 🔥 | 43.8°C | 35.5°C | 27.2°C | 45.8°C | 24.4°C | 8 mm | 24% | 2.4 m/s | 7 |
| 1990 | 39.0°C | 32.0°C | 24.9°C | 43.8°C | 22.1°C | 74 mm | 48% | 2.4 m/s | 6.3 |
| 1989 | 40.2°C | 32.5°C | 24.7°C | 44.1°C | 21.5°C | 62 mm | 39% | 2.9 m/s | 6.6 |
| 1988 | 42.2°C | 33.6°C | 25.1°C | 47.3°C | 20.9°C | 19 mm | 37% | 2.2 m/s | 6.6 |
| 1987 | 40.4°C | 32.8°C | 25.2°C | 44.6°C | 19.1°C | 22 mm | 31% | 2.1 m/s | 6.7 |
| 1986 | 38.9°C | 31.0°C | 23.1°C | 41.4°C | 19.5°C | 81 mm | 45% | 2 m/s | 6.8 |
| 1985 | 40.9°C | 32.8°C | 24.6°C | 44.0°C | 22.8°C | 51 mm | 40% | 2 m/s | 7.1 |
| 1984 | 41.9°C | 33.3°C | 24.7°C | 45.6°C | 21.7°C | 49 mm | 33% | 2.6 m/s | 6.8 |
| 1983 | 40.4°C | 32.6°C | 24.8°C | 44.0°C | 21.9°C | 46 mm | 38% | 2.2 m/s | — |
| 1982 | 40.1°C | 32.8°C | 25.6°C | 43.6°C | 21.3°C | 20 mm | 33% | 2.1 m/s | — |
| 1981 | 38.9°C | 31.4°C | 23.9°C | 43.4°C | 20.6°C | 117 mm | 53% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 40°C with lows near 25.1°C (mean 32.6°C), based on 45 years of NASA POWER data.
May averages 66 mm of rainfall in Ranchi, one of the drier months. The wettest on record was 299 mm in 2021.
The hottest May reached 47.3°C in 1988. The coldest dipped to 19.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1.3°C. Daytime highs moved from 40.4°C to 38.2°C and overnight lows from 24.7°C to 24.5°C over the same span.
May is one of the warmer months of the year in Ranchi and one of the drier months, so plan for around 40°C daytime highs and 25.1°C at night.
Not quite — May is the 12th coolest month in Ranchi, averaging 32.6°C.
For May in Ranchi, pack light, breathable clothing and sun protection, with typical highs of 40°C and lows of 25.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 42% — relatively dry.
Average wind speed in May is 2.2 m/s. The windiest May on record averaged 2.9 m/s (1989).
The wettest May on record was 2021 with 299 mm. On average, May sees 66 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Ranchi behaves each May, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for May specifically, along with year-by-year records and how the month has changed over the decades.
