January is one of the cooler months of the year in West Champaran, with average highs near 23.8°C and lows around 9.7°C (mean 16.8°C). It is one of the drier months, averaging 12 mm of rainfall and 48% relative humidity across the period.
January is one of the cooler months of the year in West Champaran. Across 45 years of records, the warmest January in West Champaran was 1990 — when the month averaged 19.1°C — while the coldest was 2013 at 13.3°C. Typical January days reach 23.8°C with nights near 9.7°C. The long-term trend is cooling, about 0.3°C per decade.
January is one of the drier months in West Champaran, averaging 12 mm of rainfall. The wettest January on record was 1982 with 59 mm, while the driest were 2023, 2024 and 2025, among others at 0 mm.
Relative humidity in West Champaran during January averages 48%. The most humid January was 2022 at 81%, and the least humid was 2000 at 27%.
January receives about 3.2 kWh/m²/day of solar energy in West Champaran. The sunniest January was 1991 at 4.4 kWh/m²/day, and the cloudiest was 2024 at 1.8.
Average wind speed in West Champaran during January is 1.4 m/s. The windiest Januarys were 1995, 2015 and 2022, among others at 1.6 m/s, while the calmest were 2007 and 2009 at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.1°C | 17.5°C | 16.8°C | 16.1°C | 16.3°C | -0.8°C |
| Avg High | 24.1°C | 25.0°C | 23.8°C | 23.1°C | 22.8°C | -1.3°C |
| Avg Low | 10.0°C | 10.0°C | 9.7°C | 9.1°C | 9.8°C | -0.2°C |
| Avg Rain | 17 mm | 10 mm | 12 mm | 10 mm | 8 mm | -8 mm |
January temperatures in West Champaran have fallen by about 0.8°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 0.4°C (2013) to a record high of 32.2°C (1990).
Rainfall in January is one of the drier months, averaging 12 mm, with a wettest year of 59 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows fell 0.2°C per decade, narrowing the gap between day and night.
A good time to visit West Champaran
January is a good time to visit West Champaran, with days averaging 23.8°C and nights around 9.7°C (mean 16.8°C, cooler than West Champaran's yearly average) and low rainfall. November and February are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.9°C | 17.7°C | 10.6°C | 27.8°C | 7.9°C | 0 mm | 55% | 1.4 m/s | 2.3 |
| 2024 | 22.9°C | 16.4°C | 9.9°C | 24.8°C | 7.1°C | 0 mm | 55% | 1.3 m/s | 1.8 |
| 2023 | 23.0°C | 16.3°C | 9.6°C | 28.2°C | 4.4°C | 0 mm | 66% | 1.5 m/s | 2.3 |
| 2022 | 20.4°C | 14.8°C | 9.3°C | 24.4°C | 5.3°C | 13 mm | 81% | 1.6 m/s | 2.3 |
| 2021 | 24.6°C | 17.4°C | 10.2°C | 29.8°C | 6.2°C | 0 mm | 50% | 1.3 m/s | 2.3 |
| 2020 | 20.8°C | 15.0°C | 9.3°C | 24.3°C | 3.6°C | 37 mm | 73% | 1.4 m/s | 2.4 |
| 2019 | 24.6°C | 17.7°C | 10.8°C | 27.5°C | 6.2°C | 16 mm | 47% | 1.5 m/s | 3.1 |
| 2018 | 22.8°C | 15.4°C | 8.0°C | 25.0°C | 4.9°C | 2 mm | 45% | 1.3 m/s | 2.3 |
| 2017 | 25.3°C | 17.9°C | 10.6°C | 29.4°C | 4.6°C | 8 mm | 51% | 1.4 m/s | 3.2 |
| 2016 | 24.3°C | 17.4°C | 10.4°C | 27.9°C | 5.2°C | 3 mm | 40% | 1.3 m/s | 2.8 |
| 2015 | 22.8°C | 16.0°C | 9.2°C | 26.9°C | 4.1°C | 25 mm | 63% | 1.6 m/s | 2.3 |
| 2014 | 22.5°C | 15.8°C | 9.1°C | 25.3°C | 5.3°C | 14 mm | 65% | 1.5 m/s | 2.4 |
| 2013 ❄️ | 20.6°C | 13.3°C | 6.1°C | 26.4°C | 0.4°C | 9 mm | 57% | 1.5 m/s | 3 |
| 2012 | 22.5°C | 16.2°C | 9.8°C | 25.2°C | 4.0°C | 19 mm | 57% | 1.5 m/s | 3 |
| 2011 | 21.7°C | 14.7°C | 7.8°C | 25.3°C | 3.4°C | 3 mm | 55% | 1.4 m/s | 3 |
| 2010 | 24.0°C | 16.5°C | 9.1°C | 25.8°C | 5.3°C | 0 mm | 51% | 1.4 m/s | 2.3 |
| 2009 | 24.0°C | 17.5°C | 11.0°C | 27.5°C | 8.5°C | 0 mm | 58% | 1.2 m/s | 3 |
| 2008 | 22.6°C | 16.1°C | 9.7°C | 26.2°C | 5.3°C | 21 mm | 54% | 1.3 m/s | 3.3 |
| 2007 | 23.1°C | 15.8°C | 8.6°C | 26.8°C | 3.8°C | 0 mm | 43% | 1.2 m/s | 3.4 |
| 2006 | 24.0°C | 16.4°C | 8.7°C | 27.1°C | 5.5°C | 0 mm | 49% | 1.4 m/s | 3.4 |
| 2005 | 23.2°C | 17.0°C | 10.7°C | 27.4°C | 7.6°C | 44 mm | 53% | 1.3 m/s | 3.1 |
| 2004 | 23.7°C | 16.9°C | 10.1°C | 26.1°C | 6.0°C | 30 mm | 49% | 1.3 m/s | 2.4 |
| 2003 | 23.3°C | 15.6°C | 7.8°C | 26.1°C | 4.4°C | 6 mm | 43% | 1.4 m/s | 2.4 |
| 2002 | 23.9°C | 17.5°C | 11.0°C | 27.2°C | 6.4°C | 15 mm | 48% | 1.5 m/s | 3.1 |
| 2001 | 24.0°C | 16.5°C | 9.0°C | 28.5°C | 3.7°C | 2 mm | 38% | 1.4 m/s | 3.4 |
| 2000 | 26.3°C | 18.3°C | 10.3°C | 28.6°C | 4.6°C | 1 mm | 27% | 1.5 m/s | 3.3 |
| 1999 | 25.0°C | 17.6°C | 10.2°C | 29.2°C | 7.2°C | 3 mm | 42% | 1.5 m/s | 3.4 |
| 1998 | 23.5°C | 16.3°C | 9.2°C | 26.5°C | 4.8°C | 2 mm | 43% | 1.5 m/s | 3.1 |
| 1997 | 24.3°C | 16.9°C | 9.5°C | 26.6°C | 4.7°C | 7 mm | 35% | 1.5 m/s | 4 |
| 1996 | 24.1°C | 16.9°C | 9.7°C | 26.4°C | 4.7°C | 39 mm | 46% | 1.5 m/s | 3.9 |
| 1995 | 24.5°C | 17.1°C | 9.7°C | 27.4°C | 6.0°C | 12 mm | 36% | 1.6 m/s | 3.7 |
| 1994 | 26.4°C | 19.0°C | 11.5°C | 31.1°C | 6.0°C | 20 mm | 39% | 1.5 m/s | 3.8 |
| 1993 | 24.5°C | 16.8°C | 9.1°C | 28.9°C | 4.6°C | 6 mm | 39% | 1.6 m/s | 3.9 |
| 1992 | 24.9°C | 17.5°C | 10.2°C | 29.7°C | 6.2°C | 0 mm | 39% | 1.3 m/s | 4.2 |
| 1991 | 24.8°C | 17.5°C | 10.3°C | 29.9°C | 6.3°C | 7 mm | 39% | 1.4 m/s | 4.4 |
| 1990 🔥 | 27.5°C | 19.1°C | 10.6°C | 32.2°C | 6.3°C | 0 mm | 28% | 1.5 m/s | 4.1 |
| 1989 | 23.2°C | 15.7°C | 8.2°C | 27.0°C | 4.8°C | 21 mm | 44% | 1.5 m/s | 4.3 |
| 1988 | 24.7°C | 17.6°C | 10.5°C | 27.4°C | 7.3°C | 1 mm | 45% | 1.3 m/s | 4.2 |
| 1987 | 24.9°C | 17.6°C | 10.2°C | 28.4°C | 5.0°C | 8 mm | 41% | 1.3 m/s | 3.7 |
| 1986 | 23.6°C | 16.4°C | 9.3°C | 27.0°C | 4.3°C | 1 mm | 54% | 1.4 m/s | 3.9 |
| 1985 | 24.3°C | 17.5°C | 10.7°C | 27.4°C | 6.0°C | 22 mm | 46% | 1.4 m/s | 3.8 |
| 1984 | 24.6°C | 17.1°C | 9.6°C | 28.0°C | 4.8°C | 5 mm | 38% | 1.6 m/s | 4 |
| 1983 | 23.9°C | 16.9°C | 9.8°C | 27.4°C | 7.5°C | 1 mm | 36% | 1.3 m/s | — |
| 1982 🌧️ | 25.0°C | 18.1°C | 11.2°C | 29.4°C | 6.0°C | 59 mm | 49% | 1.5 m/s | — |
| 1981 | 23.0°C | 16.8°C | 10.6°C | 25.2°C | 7.8°C | 34 mm | 55% | 1.3 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 23.8°C with lows near 9.7°C (mean 16.8°C), based on 45 years of NASA POWER data.
January averages 12 mm of rainfall in West Champaran, one of the drier months. The wettest on record was 59 mm in 1982.
The hottest January reached 32.2°C in 1990. The coldest dipped to 0.4°C in 2013.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have fallen by about 0.8°C. Daytime highs moved from 24.2°C to 23.2°C and overnight lows from 10.4°C to 9.9°C over the same span.
January is one of the cooler months of the year in West Champaran and one of the drier months, so plan for around 23.8°C daytime highs and 9.7°C at night.
Yes — January is the coldest month of the year in West Champaran, averaging 16.8°C.
For January in West Champaran, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 9.7°C.
Relative humidity in January averages 48% — relatively dry.
Average wind speed in January is 1.4 m/s. The windiest January on record averaged 1.6 m/s (1984).
The wettest January on record was 1982 with 59 mm. On average, January 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 West Champaran behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
