April is one of the warmer months of the year in Sitamarhi, with average highs near 43.1°C and lows around 18.6°C (mean 30.9°C). It is one of the drier months, averaging 21 mm of rainfall and 26% relative humidity across the period.
April is one of the warmer months of the year in Sitamarhi. Across 45 years of records, the warmest Aprils in Sitamarhi were 2010 and 2016 — when the month averaged 33.1°C — while the coldest were 1997 and 2020 at 28.7°C. Typical April days reach 43.1°C with nights near 18.6°C. The long-term April temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 30.7°C | 30.5°C | 30.9°C | 31.3°C | 30.8°C | +0.1°C |
| Avg High | 43.0°C | 43.3°C | 43.1°C | 42.8°C | 43.0°C | 0°C |
| Avg Low | 18.3°C | 17.8°C | 18.7°C | 19.8°C | 18.6°C | +0.3°C |
| Avg Rain | 20 mm | 8 mm | 24 mm | 25 mm | 32 mm | +12 mm |
April temperatures in Sitamarhi have risen by about 0.3°C between 1981–1985 and 2021–2025.
April has ranged from a record low of 14.8°C (1989) to a record high of 45.9°C (1999).
Rainfall in April is one of the drier months, averaging 21 mm, with a wettest year of 79 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
A good time to visit Sitamarhi
April is a good time to visit Sitamarhi, with days averaging 43.1°C and nights around 18.6°C (mean 30.9°C, warmer than Sitamarhi's yearly average) and low rainfall. November and February are marginally more temperate, but April still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 43.3°C | 18.6°C | 31.0°C | 56 mm | 39% | 2.5 m/s | 5.5 |
| 2024 | 45.0°C | 19.1°C | 32.1°C | 3 mm | 22% | 3.1 m/s | 6.4 |
| 2023 | 44.9°C | 18.1°C | 31.5°C | 18 mm | 28% | 2.4 m/s | 6.1 |
| 2022 | 43.1°C | 20.3°C | 31.7°C | 23 mm | 36% | 2.4 m/s | 5.9 |
| 2021 | 42.0°C | 17.7°C | 29.8°C | 26 mm | 21% | 2.2 m/s | 6.2 |
| 2020 | 39.5°C | 17.9°C | 28.7°C | 63 mm | 43% | 2.2 m/s | 6 |
| 2019 | 44.1°C | 20.1°C | 32.1°C | 36 mm | 35% | 2.2 m/s | 5.9 |
| 2018 | 42.1°C | 21.0°C | 31.6°C | 55 mm | 39% | 2.4 m/s | 5.7 |
| 2017 | 42.8°C | 18.1°C | 30.4°C | 26 mm | 31% | 2.3 m/s | 5.9 |
| 2016 | 44.7°C | 21.4°C | 33.1°C | 3 mm | 18% | 3.1 m/s | 6.5 |
| 2015 | 41.2°C | 20.1°C | 30.6°C | 50 mm | 42% | 2.1 m/s | 5.9 |
| 2014 | 43.2°C | 17.5°C | 30.3°C | 1 mm | 20% | 2.4 m/s | 6.9 |
| 2013 | 42.8°C | 18.3°C | 30.6°C | 30 mm | 32% | 2.4 m/s | 6.3 |
| 2012 | 42.8°C | 21.3°C | 32.1°C | 12 mm | 27% | 2.6 m/s | 6.5 |
| 2011 | 39.6°C | 18.4°C | 29.0°C | 37 mm | 32% | 2 m/s | 6.2 |
| 2010 🔥 | 44.8°C | 21.3°C | 33.1°C | 1 mm | 20% | 2.4 m/s | 6.5 |
| 2009 | 42.1°C | 18.7°C | 30.4°C | 2 mm | 20% | 2.1 m/s | 6.7 |
| 2008 | 42.3°C | 17.4°C | 29.9°C | 36 mm | 32% | 1.8 m/s | 6.8 |
| 2007 | 40.7°C | 18.4°C | 29.5°C | 28 mm | 35% | 1.9 m/s | 6.3 |
| 2006 | 42.2°C | 19.7°C | 31.0°C | 22 mm | 28% | 2 m/s | 6.2 |
| 2005 | 42.5°C | 16.7°C | 29.6°C | 17 mm | 21% | 1.9 m/s | 6.4 |
| 2004 🌧️ | 45.0°C | 19.9°C | 32.4°C | 79 mm | 35% | 2.1 m/s | 6 |
| 2003 | 44.2°C | 19.2°C | 31.7°C | 14 mm | 22% | 2.1 m/s | 6.6 |
| 2002 | 43.6°C | 18.6°C | 31.1°C | 12 mm | 31% | 2.7 m/s | 6.2 |
| 2001 | 45.1°C | 20.0°C | 32.5°C | 11 mm | 21% | 2.2 m/s | 6.7 |
| 2000 | 43.5°C | 18.7°C | 31.1°C | 19 mm | 22% | 2.4 m/s | 6.8 |
| 1999 | 45.9°C | 18.7°C | 32.3°C | 0 mm | 13% | 2.2 m/s | 6.7 |
| 1998 | 42.1°C | 19.5°C | 30.8°C | 10 mm | 27% | 2.3 m/s | 6.3 |
| 1997 ❄️ | 40.3°C | 17.1°C | 28.7°C | 27 mm | 31% | 2.2 m/s | 6 |
| 1996 | 43.5°C | 15.2°C | 29.4°C | 13 mm | 18% | 2.3 m/s | 6.5 |
| 1995 | 44.5°C | 16.9°C | 30.7°C | 0 mm | 14% | 2.4 m/s | 6.9 |
| 1994 | 42.3°C | 19.1°C | 30.7°C | 7 mm | 19% | 2.3 m/s | 6.6 |
| 1993 | 42.7°C | 16.9°C | 29.8°C | 16 mm | 27% | 2.5 m/s | 6.2 |
| 1992 | 44.1°C | 18.6°C | 31.3°C | 0 mm | 16% | 3.1 m/s | 6.5 |
| 1991 | 43.3°C | 19.2°C | 31.2°C | 1 mm | 16% | 2.2 m/s | 6.3 |
| 1990 | 44.6°C | 16.5°C | 30.5°C | 3 mm | 19% | 2.5 m/s | 6.8 |
| 1989 | 44.0°C | 14.8°C | 29.4°C | 1 mm | 12% | 2.8 m/s | 7 |
| 1988 | 43.3°C | 15.7°C | 29.5°C | 21 mm | 24% | 2 m/s | 6.2 |
| 1987 | 41.9°C | 20.4°C | 31.1°C | 22 mm | 21% | 2.6 m/s | 6.4 |
| 1986 | 43.2°C | 19.3°C | 31.3°C | 24 mm | 21% | 2.1 m/s | 7.1 |
| 1985 | 44.9°C | 20.1°C | 32.5°C | 1 mm | 20% | 2.8 m/s | 6.9 |
| 1984 | 44.2°C | 21.2°C | 32.7°C | 8 mm | 18% | 2.2 m/s | 6.3 |
| 1983 | 43.8°C | 18.3°C | 31.0°C | 8 mm | 26% | 2.7 m/s | — |
| 1982 | 40.8°C | 17.7°C | 29.2°C | 54 mm | 33% | 2.3 m/s | — |
| 1981 | 40.9°C | 17.5°C | 29.2°C | 38 mm | 33% | 2.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 43.1°C with lows near 18.6°C (mean 30.9°C), based on 45 years of NASA POWER data.
April averages 21 mm of rainfall in Sitamarhi, one of the drier months. The wettest on record was 79 mm in 2004.
The hottest April reached 45.9°C in 1999. The coldest dipped to 14.8°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.3°C. Daytime highs moved from 42.9°C to 43.7°C and overnight lows from 19°C to 18.8°C over the same span.
April is one of the warmer months of the year in Sitamarhi and one of the drier months, so plan for around 43.1°C daytime highs and 18.6°C at night.
Not quite — April is the 9th coolest month in Sitamarhi, averaging 30.9°C.
For April in Sitamarhi, pack light, breathable clothing and sun protection, with typical highs of 43.1°C and lows of 18.6°C.
Relative humidity in April averages 26% — relatively dry.
Average wind speed in April is 2.3 m/s. The windiest April on record averaged 3.1 m/s (1992).
The wettest April on record was 2004 with 79 mm. On average, April sees 21 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 Sitamarhi 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.
