April is one of the warmer months of the year in Patna, with average highs near 40.9°C and lows around 23.6°C (mean 32.3°C). It is one of the drier months, averaging 12 mm of rainfall and 24% relative humidity across the period.
April is one of the warmer months of the year in Patna. Across 45 years of records, the warmest April in Patna was 2016 — when the month averaged 35.1°C — while the coldest was 1997 at 30°C. Typical April days reach 40.9°C with nights near 23.6°C. The long-term trend is warming, about 0.2°C per decade.
April is one of the drier months in Patna, averaging 12 mm of rainfall. The wettest April on record was 1982 with 53 mm, while the driest were 1999, 2010 and 2014, among others at 0 mm.
Relative humidity in Patna during April averages 24%. The most humid April was 2015 at 37%, and the least humid was 1999 at 12%.
April receives about 6.5 kWh/m²/day of solar energy in Patna. The sunniest April was 1986 at 7.3 kWh/m²/day, and the cloudiest was 2025 at 5.6.
Average wind speed in Patna during April is 2.3 m/s. The windiest April was 2024 at 3.4 m/s, while the calmest was 2008 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.0°C | 32.0°C | 32.3°C | 32.6°C | 32.3°C | +0.3°C |
| Avg High | 40.8°C | 41.1°C | 40.9°C | 40.8°C | 40.7°C | -0.1°C |
| Avg Low | 23.1°C | 22.9°C | 23.7°C | 24.4°C | 23.9°C | +0.8°C |
| Avg Rain | 15 mm | 5 mm | 15 mm | 13 mm | 15 mm | 0 mm |
April temperatures in Patna have risen by about 0.9°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 14.8°C (1988) to a record high of 47°C (1999).
Rainfall in April is one of the drier months, averaging 12 mm, with a wettest year of 53 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Patna
April is a good time to visit Patna, with days averaging 40.9°C and nights around 23.6°C (mean 32.3°C, warmer than Patna's yearly average) and low rainfall. November and February are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 40.1°C | 32.1°C | 24.1°C | 45.5°C | 18.6°C | 36 mm | 32% | 2.4 m/s | 5.6 |
| 2024 | 41.9°C | 33.6°C | 25.4°C | 45.2°C | 21.5°C | 2 mm | 21% | 3.4 m/s | 6.3 |
| 2023 | 39.4°C | 31.4°C | 23.3°C | 44.9°C | 19.4°C | 21 mm | 29% | 2.6 m/s | 6.1 |
| 2022 | 42.8°C | 33.7°C | 24.6°C | 45.3°C | 21.4°C | 2 mm | 25% | 2.3 m/s | 6.1 |
| 2021 | 41.5°C | 32.6°C | 23.6°C | 43.9°C | 18.1°C | 4 mm | 16% | 2.1 m/s | 6.3 |
| 2020 | 38.4°C | 30.5°C | 22.6°C | 41.4°C | 17.2°C | 26 mm | 36% | 2.1 m/s | 6 |
| 2019 | 41.3°C | 33.0°C | 24.7°C | 46.2°C | 20.9°C | 12 mm | 28% | 2.1 m/s | 6 |
| 2018 | 40.0°C | 32.0°C | 24.1°C | 43.3°C | 21.4°C | 32 mm | 33% | 2.3 m/s | 6 |
| 2017 | 42.0°C | 33.5°C | 25.0°C | 44.2°C | 19.3°C | 5 mm | 26% | 2.3 m/s | 6.1 |
| 2016 🔥 | 43.6°C | 35.1°C | 26.6°C | 45.5°C | 22.4°C | 0 mm | 17% | 2.9 m/s | 6.5 |
| 2015 | 38.4°C | 31.2°C | 23.9°C | 43.1°C | 19.1°C | 17 mm | 37% | 2.1 m/s | 5.9 |
| 2014 | 41.0°C | 32.2°C | 23.4°C | 44.2°C | 18.4°C | 0 mm | 22% | 2.3 m/s | 6.9 |
| 2013 | 39.3°C | 31.5°C | 23.6°C | 44.0°C | 19.0°C | 20 mm | 30% | 2.3 m/s | 6.4 |
| 2012 | 40.8°C | 32.5°C | 24.3°C | 43.3°C | 20.8°C | 10 mm | 26% | 2.2 m/s | 6.6 |
| 2011 | 38.5°C | 30.7°C | 23.0°C | 41.6°C | 19.3°C | 35 mm | 31% | 1.8 m/s | 6.1 |
| 2010 | 43.2°C | 34.2°C | 25.2°C | 45.5°C | 21.7°C | 0 mm | 17% | 2.2 m/s | 6.6 |
| 2009 | 41.3°C | 32.3°C | 23.3°C | 44.0°C | 19.0°C | 1 mm | 18% | 2.1 m/s | 6.8 |
| 2008 | 39.6°C | 31.0°C | 22.4°C | 43.8°C | 18.0°C | 28 mm | 31% | 1.7 m/s | 6.8 |
| 2007 | 40.3°C | 32.1°C | 24.0°C | 43.1°C | 17.4°C | 20 mm | 31% | 1.9 m/s | 6.3 |
| 2006 | 40.2°C | 32.0°C | 23.8°C | 43.0°C | 20.4°C | 16 mm | 28% | 2 m/s | 6.4 |
| 2005 | 40.6°C | 32.0°C | 23.3°C | 44.3°C | 17.0°C | 6 mm | 20% | 1.9 m/s | 6.4 |
| 2004 | 40.9°C | 32.8°C | 24.6°C | 45.6°C | 20.5°C | 26 mm | 30% | 2.2 m/s | 6.2 |
| 2003 | 41.5°C | 32.9°C | 24.3°C | 45.6°C | 19.7°C | 17 mm | 21% | 2.1 m/s | 6.8 |
| 2002 | 41.5°C | 32.7°C | 23.9°C | 45.3°C | 19.4°C | 5 mm | 25% | 2 m/s | 6.3 |
| 2001 | 40.9°C | 32.4°C | 23.8°C | 46.2°C | 20.0°C | 10 mm | 20% | 2.1 m/s | 6.6 |
| 2000 | 42.1°C | 32.7°C | 23.3°C | 44.8°C | 19.2°C | 18 mm | 20% | 2.4 m/s | 6.7 |
| 1999 | 43.4°C | 33.0°C | 22.5°C | 47.0°C | 18.9°C | 0 mm | 12% | 2.3 m/s | 7 |
| 1998 | 40.7°C | 32.0°C | 23.4°C | 44.1°C | 18.2°C | 4 mm | 27% | 1.9 m/s | 6.5 |
| 1997 ❄️ | 38.2°C | 30.0°C | 21.8°C | 42.4°C | 18.5°C | 20 mm | 29% | 2 m/s | 6.2 |
| 1996 | 41.3°C | 32.3°C | 23.4°C | 44.3°C | 14.9°C | 3 mm | 18% | 2.1 m/s | 6.3 |
| 1995 | 41.8°C | 32.4°C | 23.0°C | 45.8°C | 17.0°C | 0 mm | 15% | 2.3 m/s | 6.8 |
| 1994 | 40.4°C | 31.9°C | 23.3°C | 43.2°C | 18.8°C | 17 mm | 21% | 2.1 m/s | 6.6 |
| 1993 | 40.6°C | 31.5°C | 22.4°C | 44.7°C | 17.0°C | 6 mm | 24% | 2.3 m/s | 6.4 |
| 1992 | 42.5°C | 33.2°C | 23.9°C | 44.8°C | 19.0°C | 1 mm | 17% | 3 m/s | 6.5 |
| 1991 | 41.3°C | 32.3°C | 23.3°C | 45.1°C | 17.2°C | 0 mm | 16% | 2.3 m/s | 6.7 |
| 1990 | 41.0°C | 31.7°C | 22.4°C | 45.8°C | 15.5°C | 2 mm | 18% | 2.7 m/s | 7 |
| 1989 | 41.8°C | 31.6°C | 21.5°C | 44.7°C | 15.6°C | 0 mm | 12% | 2.9 m/s | 7.1 |
| 1988 | 41.7°C | 32.5°C | 23.4°C | 44.8°C | 14.8°C | 12 mm | 23% | 2 m/s | 6.3 |
| 1987 | 41.0°C | 32.2°C | 23.3°C | 44.4°C | 19.7°C | 17 mm | 21% | 2.7 m/s | 6.7 |
| 1986 | 41.2°C | 32.3°C | 23.5°C | 44.1°C | 19.4°C | 24 mm | 21% | 2.1 m/s | 7.3 |
| 1985 | 42.1°C | 33.3°C | 24.5°C | 45.5°C | 21.0°C | 0 mm | 19% | 2.7 m/s | 6.9 |
| 1984 | 42.2°C | 33.7°C | 25.1°C | 45.1°C | 21.6°C | 1 mm | 17% | 2 m/s | 6.5 |
| 1983 | 38.2°C | 30.1°C | 22.0°C | 45.5°C | 18.2°C | 11 mm | 28% | 2.7 m/s | — |
| 1982 🌧️ | 39.4°C | 31.0°C | 22.6°C | 41.9°C | 17.8°C | 53 mm | 32% | 2.1 m/s | — |
| 1981 | 39.9°C | 31.0°C | 22.2°C | 43.0°C | 16.3°C | 18 mm | 30% | 2.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 40.9°C with lows near 23.6°C (mean 32.3°C), based on 45 years of NASA POWER data.
April averages 12 mm of rainfall in Patna, one of the drier months. The wettest on record was 53 mm in 1982.
The hottest April reached 47°C in 1999. The coldest dipped to 14.8°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.9°C. Daytime highs moved from 40.4°C to 41.1°C and overnight lows from 23.3°C to 24.2°C over the same span.
April is one of the warmer months of the year in Patna and one of the drier months, so plan for around 40.9°C daytime highs and 23.6°C at night.
Not quite — April is the 10th coolest month in Patna, averaging 32.3°C.
For April in Patna, pack light, breathable clothing and sun protection, with typical highs of 40.9°C and lows of 23.6°C.
Relative humidity in April averages 24% — relatively dry.
Average wind speed in April is 2.3 m/s. The windiest April on record averaged 3.4 m/s (2024).
The wettest April on record was 1982 with 53 mm. On average, April sees 12 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 Patna behaves each April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
