May is one of the warmer months of the year in Lucknow, with average highs near 42.7°C and lows around 27.5°C (mean 35.1°C). It is one of the drier months, averaging 30 mm of rainfall and 25% relative humidity across the period.
May is one of the warmer months of the year in Lucknow. Across 45 years of records, the warmest May in Lucknow was 1991 — when the month averaged 36.9°C — while the coldest was 2021 at 31.5°C. Typical May days reach 42.7°C with nights near 27.5°C. The long-term trend is cooling, about 0.2°C per decade.
May is one of the drier months in Lucknow, averaging 30 mm of rainfall. The wettest May on record was 2021 with 149 mm, while the driest was 2012 at 0 mm.
Relative humidity in Lucknow during May averages 25%. The most humid May was 2021 at 43%, and the least humid was 1991 at 15%.
May receives about 6.7 kWh/m²/day of solar energy in Lucknow. The sunniest Mays were 1996 and 2013 at 7.3 kWh/m²/day, and the cloudiest was 2021 at 5.6.
Average wind speed in Lucknow during May is 2.5 m/s. The windiest May was 1984 at 3.3 m/s, while the calmest were 2008 and 2022 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 35.0°C | 35.8°C | 34.9°C | 35.7°C | 33.6°C | -1.4°C |
| Avg High | 43.1°C | 43.7°C | 42.2°C | 43.4°C | 40.6°C | -2.5°C |
| Avg Low | 26.9°C | 27.9°C | 27.7°C | 28.1°C | 26.6°C | -0.3°C |
| Avg Rain | 16 mm | 15 mm | 42 mm | 28 mm | 61 mm | +46 mm |
May temperatures in Lucknow have fallen by about 1.4°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 19.6°C (2004) to a record high of 48.9°C (1988).
Rainfall in May is one of the drier months, averaging 30 mm, with a wettest year of 149 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 Lucknow
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Lucknow. That said, May — with days averaging 42.7°C and nights around 27.5°C (mean 35.1°C) and moderate rainfall (30 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 | 40.8°C | 34.3°C | 27.7°C | 45.1°C | 24.7°C | 35 mm | 35% | 2.6 m/s | 6 |
| 2024 | 42.8°C | 35.3°C | 27.9°C | 48.6°C | 21.6°C | 6 mm | 25% | 2.4 m/s | 6.4 |
| 2023 | 39.5°C | 32.4°C | 25.3°C | 44.9°C | 20.4°C | 54 mm | 34% | 2.1 m/s | 6.8 |
| 2022 | 41.3°C | 34.4°C | 27.4°C | 45.7°C | 24.2°C | 55 mm | 34% | 2 m/s | 6.3 |
| 2021 ❄️ 🌧️ | 37.9°C | 31.5°C | 25.0°C | 42.6°C | 21.8°C | 149 mm | 43% | 2.3 m/s | 5.6 |
| 2020 | 41.0°C | 33.6°C | 26.2°C | 47.8°C | 22.8°C | 68 mm | 35% | 2.3 m/s | 6.8 |
| 2019 | 44.0°C | 36.1°C | 28.1°C | 47.4°C | 24.4°C | 3 mm | 19% | 2.9 m/s | 7.2 |
| 2018 | 43.1°C | 35.5°C | 27.9°C | 47.0°C | 24.5°C | 23 mm | 27% | 2.5 m/s | 6.4 |
| 2017 | 42.9°C | 35.8°C | 28.8°C | 46.8°C | 25.1°C | 54 mm | 28% | 2.3 m/s | 6.6 |
| 2016 | 42.2°C | 35.3°C | 28.4°C | 47.3°C | 25.4°C | 80 mm | 30% | 2.2 m/s | 6.4 |
| 2015 | 43.4°C | 35.2°C | 27.1°C | 47.5°C | 22.2°C | 12 mm | 23% | 2.1 m/s | 7 |
| 2014 | 42.9°C | 35.6°C | 28.3°C | 46.3°C | 26.1°C | 19 mm | 23% | 3 m/s | 7 |
| 2013 | 44.5°C | 36.0°C | 27.6°C | 46.7°C | 23.9°C | 12 mm | 18% | 2.5 m/s | 7.3 |
| 2012 | 43.9°C | 35.9°C | 27.8°C | 46.9°C | 24.0°C | 0 mm | 16% | 2.5 m/s | 7.1 |
| 2011 | 43.0°C | 35.8°C | 28.5°C | 46.0°C | 25.4°C | 44 mm | 29% | 2.2 m/s | 6.8 |
| 2010 | 43.6°C | 36.2°C | 28.8°C | 47.3°C | 26.5°C | 34 mm | 23% | 2.2 m/s | 6.6 |
| 2009 | 41.9°C | 34.9°C | 27.9°C | 46.5°C | 24.5°C | 38 mm | 30% | 2.9 m/s | 6.5 |
| 2008 | 41.3°C | 34.6°C | 28.0°C | 44.8°C | 24.6°C | 64 mm | 30% | 2 m/s | 6.4 |
| 2007 | 40.8°C | 34.0°C | 27.2°C | 43.4°C | 24.9°C | 62 mm | 36% | 2.4 m/s | 6.5 |
| 2006 | 41.4°C | 35.0°C | 28.6°C | 44.4°C | 25.5°C | 42 mm | 35% | 2.4 m/s | 6.3 |
| 2005 | 41.7°C | 34.0°C | 26.4°C | 45.4°C | 21.5°C | 32 mm | 25% | 2.2 m/s | 7 |
| 2004 | 43.1°C | 35.2°C | 27.3°C | 47.0°C | 19.6°C | 38 mm | 25% | 2.7 m/s | 6.7 |
| 2003 | 42.7°C | 34.6°C | 26.5°C | 46.1°C | 20.8°C | 8 mm | 17% | 2.6 m/s | 6.7 |
| 2002 | 43.9°C | 35.8°C | 27.8°C | 47.3°C | 24.6°C | 27 mm | 25% | 2.4 m/s | 6.7 |
| 2001 | 42.2°C | 35.4°C | 28.6°C | 45.9°C | 25.8°C | 43 mm | 31% | 2.3 m/s | 6.7 |
| 2000 | 42.6°C | 35.7°C | 28.8°C | 46.6°C | 23.0°C | 67 mm | 31% | 2.6 m/s | 6.6 |
| 1999 | 43.4°C | 35.9°C | 28.3°C | 47.0°C | 26.4°C | 19 mm | 23% | 2.4 m/s | 6.8 |
| 1998 | 44.0°C | 36.1°C | 28.2°C | 47.9°C | 25.1°C | 22 mm | 23% | 2.4 m/s | 7.1 |
| 1997 | 42.2°C | 34.4°C | 26.5°C | 45.0°C | 21.5°C | 27 mm | 18% | 2.5 m/s | 6.9 |
| 1996 | 44.3°C | 36.0°C | 27.8°C | 47.4°C | 22.7°C | 1 mm | 16% | 2.8 m/s | 7.3 |
| 1995 | 44.4°C | 36.4°C | 28.4°C | 46.9°C | 25.6°C | 1 mm | 17% | 2.9 m/s | 7.1 |
| 1994 | 44.2°C | 36.2°C | 28.2°C | 48.5°C | 22.7°C | 9 mm | 19% | 2.6 m/s | 7.1 |
| 1993 | 43.8°C | 35.5°C | 27.2°C | 47.4°C | 24.4°C | 34 mm | 20% | 2.4 m/s | 6.8 |
| 1992 | 42.6°C | 34.6°C | 26.5°C | 46.5°C | 23.5°C | 11 mm | 20% | 3 m/s | 6.8 |
| 1991 🔥 | 45.4°C | 36.9°C | 28.4°C | 46.9°C | 23.9°C | 4 mm | 15% | 2.8 m/s | 7 |
| 1990 | 43.0°C | 36.1°C | 29.2°C | 46.8°C | 23.9°C | 20 mm | 26% | 2.1 m/s | 6.5 |
| 1989 | 44.1°C | 35.6°C | 27.1°C | 46.8°C | 21.3°C | 5 mm | 18% | 3.1 m/s | 6.8 |
| 1988 | 45.2°C | 36.4°C | 27.6°C | 48.9°C | 24.7°C | 7 mm | 18% | 2.5 m/s | 6.8 |
| 1987 | 40.8°C | 33.4°C | 26.1°C | 46.6°C | 20.9°C | 24 mm | 27% | 2.9 m/s | 6.6 |
| 1986 | 42.4°C | 34.2°C | 26.1°C | 44.5°C | 22.1°C | 11 mm | 19% | 2.6 m/s | 6.9 |
| 1985 | 44.2°C | 35.8°C | 27.4°C | 46.6°C | 24.6°C | 8 mm | 17% | 2.3 m/s | 7.1 |
| 1984 | 45.1°C | 36.3°C | 27.4°C | 48.3°C | 22.2°C | 6 mm | 19% | 3.3 m/s | 6.8 |
| 1983 | 42.4°C | 34.9°C | 27.5°C | 45.0°C | 22.6°C | 24 mm | 24% | 2.3 m/s | — |
| 1982 | 40.5°C | 32.9°C | 25.4°C | 45.0°C | 20.0°C | 24 mm | 34% | 2.6 m/s | — |
| 1981 | 43.1°C | 35.3°C | 27.6°C | 46.4°C | 25.2°C | 32 mm | 26% | 2.4 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 42.7°C with lows near 27.5°C (mean 35.1°C), based on 45 years of NASA POWER data.
May averages 30 mm of rainfall in Lucknow, one of the drier months. The wettest on record was 149 mm in 2021.
The hottest May reached 48.9°C in 1988. The coldest dipped to 19.6°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 1.4°C. Daytime highs moved from 43.1°C to 40.5°C and overnight lows from 27.1°C to 26.7°C over the same span.
May is one of the warmer months of the year in Lucknow and one of the drier months, so plan for around 42.7°C daytime highs and 27.5°C at night.
Not quite — May is the 11th coolest month in Lucknow, averaging 35.1°C.
For May in Lucknow, pack light, breathable clothing and sun protection, with typical highs of 42.7°C and lows of 27.5°C.
Relative humidity in May averages 25% — relatively dry.
Average wind speed in May is 2.5 m/s. The windiest May on record averaged 3.3 m/s (1984).
The wettest May on record was 2021 with 149 mm. On average, May sees 30 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 Lucknow 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.
