July is one of the warmer months of the year in Patna, with average highs near 38.4°C and lows around 25.5°C (mean 32°C). It is a relatively wet time of year, averaging 281 mm of rainfall and 76% relative humidity across the period.
July is one of the warmer months of the year in Patna. Across 45 years of records, the warmest July in Patna was 1987 — when the month averaged 35.1°C — while the coldest was 2008 at 29.5°C. Typical July days reach 38.4°C with nights near 25.5°C. The long-term July temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.0°C | 32.3°C | 31.5°C | 32.1°C | 31.9°C | -0.1°C |
| Avg High | 39.0°C | 38.9°C | 37.6°C | 38.8°C | 37.5°C | -1.5°C |
| Avg Low | 25.1°C | 25.6°C | 25.4°C | 25.5°C | 26.3°C | +1.2°C |
| Avg Rain | 345 mm | 284 mm | 286 mm | 249 mm | 223 mm | -122 mm |
July temperatures in Patna have stayed relatively stable across the record.
July has ranged from a record low of 23.9°C (1986) to a record high of 45°C (1982).
Rainfall in July is a relatively wet time of year, averaging 281 mm, with a wettest year of 596 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Patna
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Patna. That said, July — with days averaging 38.4°C and nights around 25.5°C (mean 32°C) and higher rainfall (281 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 39.0°C | 26.3°C | 32.7°C | 246 mm | 73% | 3.2 m/s | 4.6 |
| 2024 | 39.6°C | 26.9°C | 33.3°C | 188 mm | 73% | 2.6 m/s | 4.6 |
| 2023 | 38.2°C | 26.8°C | 32.5°C | 160 mm | 73% | 2.8 m/s | 5 |
| 2022 | 39.7°C | 26.3°C | 33.0°C | 113 mm | 67% | 3.1 m/s | 5.4 |
| 2021 | 34.4°C | 25.7°C | 30.0°C | 258 mm | 85% | 2.4 m/s | 4.5 |
| 2020 | 33.9°C | 25.6°C | 29.8°C | 373 mm | 87% | 2.2 m/s | 3.8 |
| 2019 | 40.6°C | 25.7°C | 33.2°C | 313 mm | 76% | 2.9 m/s | 4.4 |
| 2018 | 41.4°C | 26.0°C | 33.7°C | 215 mm | 63% | 3.5 m/s | 4.3 |
| 2017 | 35.6°C | 25.0°C | 30.3°C | 337 mm | 81% | 2.8 m/s | 4.2 |
| 2016 | 37.6°C | 25.7°C | 31.6°C | 283 mm | 76% | 2.7 m/s | 4.2 |
| 2015 | 40.9°C | 24.8°C | 32.8°C | 357 mm | 79% | 2.9 m/s | 4.8 |
| 2014 | 37.5°C | 25.6°C | 31.6°C | 225 mm | 76% | 2.5 m/s | 4.7 |
| 2013 | 36.6°C | 26.1°C | 31.3°C | 86 mm | 71% | 2.6 m/s | 5.2 |
| 2012 | 40.8°C | 25.1°C | 33.0°C | 329 mm | 75% | 2.5 m/s | 4.4 |
| 2011 | 35.2°C | 25.2°C | 30.2°C | 116 mm | 80% | 2.5 m/s | 5.1 |
| 2010 | 41.4°C | 25.5°C | 33.4°C | 233 mm | 69% | 3 m/s | 4.9 |
| 2009 | 40.4°C | 26.9°C | 33.7°C | 172 mm | 63% | 3.1 m/s | 5.4 |
| 2008 ❄️ | 33.7°C | 25.2°C | 29.5°C | 391 mm | 87% | 2.2 m/s | 4.3 |
| 2007 | 37.8°C | 24.5°C | 31.2°C | 501 mm | 80% | 2.7 m/s | 3.6 |
| 2006 | 38.6°C | 25.4°C | 32.0°C | 336 mm | 80% | 2.8 m/s | 4.7 |
| 2005 | 39.0°C | 25.2°C | 32.1°C | 339 mm | 78% | 2.5 m/s | 4.9 |
| 2004 | 37.9°C | 25.2°C | 31.5°C | 216 mm | 81% | 3 m/s | 4.6 |
| 2003 | 37.2°C | 25.8°C | 31.5°C | 264 mm | 79% | 2.5 m/s | 5.1 |
| 2002 | 39.7°C | 25.8°C | 32.8°C | 233 mm | 70% | 2.3 m/s | 4.3 |
| 2001 | 35.1°C | 25.3°C | 30.2°C | 197 mm | 83% | 2.7 m/s | 5 |
| 2000 | 36.1°C | 24.5°C | 30.3°C | 208 mm | 80% | 2.4 m/s | 4.8 |
| 1999 | 38.7°C | 25.2°C | 32.0°C | 311 mm | 77% | 2.7 m/s | 4.6 |
| 1998 | 38.3°C | 25.7°C | 32.0°C | 261 mm | 81% | 2.7 m/s | 4.6 |
| 1997 🌧️ | 35.9°C | 25.7°C | 30.8°C | 596 mm | 83% | 2.2 m/s | 4.5 |
| 1996 | 39.2°C | 24.6°C | 31.9°C | 235 mm | 77% | 2.4 m/s | 5 |
| 1995 | 39.7°C | 25.4°C | 32.6°C | 280 mm | 76% | 2.7 m/s | 5 |
| 1994 | 38.1°C | 25.8°C | 31.9°C | 202 mm | 72% | 3 m/s | 5.1 |
| 1993 | 40.0°C | 26.0°C | 33.0°C | 145 mm | 67% | 3 m/s | 5.2 |
| 1992 | 43.9°C | 25.6°C | 34.8°C | 199 mm | 64% | 2.5 m/s | 5.1 |
| 1991 | 40.6°C | 26.6°C | 33.6°C | 83 mm | 60% | 3.3 m/s | 4.9 |
| 1990 | 34.2°C | 25.7°C | 29.9°C | 532 mm | 84% | 2.4 m/s | 4.3 |
| 1989 | 38.2°C | 24.7°C | 31.4°C | 314 mm | 73% | 2.3 m/s | 5.1 |
| 1988 | 36.3°C | 25.7°C | 31.0°C | 270 mm | 79% | 2.5 m/s | 4.7 |
| 1987 🔥 | 44.7°C | 25.5°C | 35.1°C | 415 mm | 77% | 2.1 m/s | 4.3 |
| 1986 | 36.4°C | 23.9°C | 30.1°C | 360 mm | 83% | 3.1 m/s | 5.2 |
| 1985 | 36.9°C | 24.4°C | 30.7°C | 490 mm | 80% | 2.5 m/s | 4.9 |
| 1984 | 35.4°C | 24.5°C | 29.9°C | 345 mm | 83% | 2.3 m/s | 3.8 |
| 1983 | 42.7°C | 26.8°C | 34.8°C | 181 mm | 60% | 2.3 m/s | — |
| 1982 | 45.0°C | 25.0°C | 35.0°C | 156 mm | 58% | 2.8 m/s | — |
| 1981 | 35.5°C | 25.2°C | 30.4°C | 574 mm | 84% | 2.7 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 38.4°C with lows near 25.5°C (mean 32°C), based on 45 years of NASA POWER data.
July averages 281 mm of rainfall in Patna, a relatively wet time of year. The wettest on record was 596 mm in 1997.
The hottest July reached 45°C in 1982. The coldest dipped to 23.9°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.1°C. Daytime highs moved from 39.1°C to 38.2°C and overnight lows from 25.2°C to 26.4°C over the same span.
July is one of the warmer months of the year in Patna and a relatively wet time of year, so plan for around 38.4°C daytime highs and 25.5°C at night.
Not quite — July is the 10th coolest month in Patna, averaging 32°C.
For July in Patna, pack light, breathable clothing and sun protection, with typical highs of 38.4°C and lows of 25.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 76% — quite humid.
Average wind speed in July is 2.7 m/s. The windiest July on record averaged 3.5 m/s (2018).
The wettest July on record was 1997 with 596 mm. On average, July sees 281 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
