May is one of the warmer months of the year in Katihar, with average highs near 43.4°C and lows around 23°C (mean 33.2°C). It is a relatively wet time of year, averaging 103 mm of rainfall and 48% relative humidity across the period.
May is one of the warmer months of the year in Katihar. Across 45 years of records, the warmest May in Katihar was 1995 — when the month averaged 35.6°C — while the coldest was 1986 at 30°C. Typical May days reach 43.4°C with nights near 23°C. The long-term May temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 32.9°C | 34.0°C | 32.8°C | 33.4°C | 32.8°C | -0.1°C |
| Avg High | 43.7°C | 44.7°C | 42.6°C | 43.4°C | 42.3°C | -1.4°C |
| Avg Low | 22.2°C | 23.4°C | 22.9°C | 23.4°C | 23.2°C | +1°C |
| Avg Rain | 88 mm | 58 mm | 99 mm | 126 mm | 165 mm | +77 mm |
May temperatures in Katihar have stayed relatively stable across the record.
May has ranged from a record low of 18.8°C (1986) to a record high of 46.1°C (1991).
Rainfall in May is a relatively wet time of year, averaging 103 mm, with a wettest year of 325 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 Katihar
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Katihar. That said, May — with days averaging 43.4°C and nights around 23°C (mean 33.2°C) and higher rainfall (103 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 | 42.0°C | 22.6°C | 32.3°C | 111 mm | 57% | 2.4 m/s | 5.2 |
| 2024 | 44.7°C | 22.7°C | 33.7°C | 164 mm | 48% | 2.7 m/s | 5.3 |
| 2023 | 43.3°C | 23.9°C | 33.6°C | 57 mm | 42% | 2 m/s | 6 |
| 2022 | 41.6°C | 24.1°C | 32.9°C | 174 mm | 59% | 2 m/s | 5.3 |
| 2021 🌧️ | 40.7°C | 23.5°C | 32.1°C | 325 mm | 59% | 2.3 m/s | 4.6 |
| 2020 | 41.8°C | 22.3°C | 32.0°C | 160 mm | 61% | 2.1 m/s | 5.2 |
| 2019 | 44.1°C | 21.5°C | 32.8°C | 65 mm | 44% | 2.5 m/s | 6 |
| 2018 | 41.7°C | 22.8°C | 32.3°C | 109 mm | 63% | 2.6 m/s | 5.4 |
| 2017 | 41.7°C | 23.7°C | 32.7°C | 142 mm | 58% | 2.3 m/s | 5.6 |
| 2016 | 43.6°C | 24.8°C | 34.2°C | 168 mm | 51% | 2 m/s | 5.4 |
| 2015 | 44.3°C | 23.8°C | 34.0°C | 85 mm | 48% | 2.1 m/s | 5.7 |
| 2014 | 44.7°C | 23.3°C | 34.0°C | 178 mm | 44% | 2.6 m/s | 6.1 |
| 2013 | 43.3°C | 22.9°C | 33.1°C | 173 mm | 52% | 2 m/s | 5.2 |
| 2012 | 45.5°C | 23.8°C | 34.6°C | 46 mm | 38% | 2.3 m/s | 6.3 |
| 2011 | 40.6°C | 22.8°C | 31.7°C | 155 mm | 58% | 2.1 m/s | 5.8 |
| 2010 | 44.3°C | 24.2°C | 34.3°C | 137 mm | 54% | 2.3 m/s | 5.7 |
| 2009 | 43.4°C | 23.8°C | 33.6°C | 98 mm | 53% | 2.6 m/s | 5.6 |
| 2008 | 41.9°C | 24.7°C | 33.3°C | 96 mm | 50% | 2 m/s | 6 |
| 2007 | 41.9°C | 23.6°C | 32.7°C | 132 mm | 50% | 1.8 m/s | 6.5 |
| 2006 | 41.6°C | 23.8°C | 32.7°C | 120 mm | 53% | 2.4 m/s | 5.8 |
| 2005 | 44.2°C | 21.8°C | 33.0°C | 63 mm | 45% | 2.2 m/s | 5.9 |
| 2004 | 43.3°C | 20.2°C | 31.7°C | 64 mm | 46% | 2.2 m/s | 6 |
| 2003 | 42.6°C | 22.3°C | 32.5°C | 109 mm | 45% | 2.1 m/s | 6.3 |
| 2002 | 44.2°C | 21.6°C | 32.9°C | 88 mm | 56% | 2.9 m/s | 5.7 |
| 2001 | 41.0°C | 23.9°C | 32.5°C | 95 mm | 54% | 2.6 m/s | 6 |
| 2000 | 41.5°C | 23.7°C | 32.6°C | 125 mm | 60% | 2.5 m/s | 5.3 |
| 1999 | 43.0°C | 23.8°C | 33.4°C | 153 mm | 55% | 2.2 m/s | 5.7 |
| 1998 | 45.1°C | 24.0°C | 34.5°C | 62 mm | 48% | 2.5 m/s | 6.4 |
| 1997 | 44.6°C | 20.5°C | 32.5°C | 53 mm | 34% | 2.3 m/s | 6.4 |
| 1996 | 45.1°C | 22.5°C | 33.8°C | 48 mm | 35% | 2.1 m/s | 6.5 |
| 1995 🔥 | 45.9°C | 25.3°C | 35.6°C | 20 mm | 34% | 2.4 m/s | 6.5 |
| 1994 | 45.1°C | 22.3°C | 33.7°C | 38 mm | 35% | 2.3 m/s | 6.9 |
| 1993 | 45.4°C | 25.1°C | 35.2°C | 34 mm | 42% | 2.3 m/s | 6.6 |
| 1992 | 44.0°C | 21.8°C | 32.9°C | 69 mm | 43% | 2.2 m/s | 6.4 |
| 1991 | 46.1°C | 24.4°C | 35.3°C | 34 mm | 35% | 2.4 m/s | 5.9 |
| 1990 | 42.2°C | 24.3°C | 33.3°C | 70 mm | 47% | 2.4 m/s | 6.3 |
| 1989 | 45.8°C | 22.2°C | 34.0°C | 66 mm | 40% | 3.1 m/s | 6.4 |
| 1988 | 45.8°C | 23.9°C | 34.9°C | 58 mm | 44% | 2.4 m/s | 7.1 |
| 1987 | 43.5°C | 21.1°C | 32.3°C | 72 mm | 39% | 1.8 m/s | 7 |
| 1986 ❄️ | 41.2°C | 18.8°C | 30.0°C | 89 mm | 44% | 2 m/s | 6.2 |
| 1985 | 43.9°C | 23.5°C | 33.7°C | 55 mm | 40% | 2.2 m/s | 7 |
| 1984 | 44.7°C | 21.4°C | 33.1°C | 118 mm | 50% | 2.8 m/s | 6.2 |
| 1983 | 43.5°C | 22.9°C | 33.2°C | 65 mm | 45% | 2 m/s | — |
| 1982 | 43.6°C | 21.9°C | 32.8°C | 48 mm | 40% | 1.7 m/s | — |
| 1981 | 41.1°C | 23.7°C | 32.4°C | 222 mm | 60% | 2.2 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 43.4°C with lows near 23°C (mean 33.2°C), based on 45 years of NASA POWER data.
May averages 103 mm of rainfall in Katihar, a relatively wet time of year. The wettest on record was 325 mm in 2021.
The hottest May reached 46.1°C in 1991. The coldest dipped to 18.8°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have fallen by about 0.1°C. Daytime highs moved from 43.4°C to 42.5°C and overnight lows from 22.7°C to 23.4°C over the same span.
May is one of the warmer months of the year in Katihar and a relatively wet time of year, so plan for around 43.4°C daytime highs and 23°C at night.
Not quite — May is the 11th coolest month in Katihar, averaging 33.2°C.
For May in Katihar, pack light, breathable clothing and sun protection, with typical highs of 43.4°C and lows of 23°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 48% — relatively dry.
Average wind speed in May is 2.3 m/s. The windiest May on record averaged 3.1 m/s (1989).
The wettest May on record was 2021 with 325 mm. On average, May sees 103 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 Katihar 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.
