April is one of the warmer months of the year in Sitamarhi, with average highs near 39.5°C and lows around 23°C (mean 31.3°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 April in Sitamarhi was 2016 — when the month averaged 34.2°C — while the coldest were 1997 and 2020 at 29.2°C. Typical April days reach 39.5°C with nights near 23°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Sitamarhi, averaging 21 mm of rainfall. The wettest April on record was 2004 with 79 mm, while the driest was 1999 at 0 mm.
Relative humidity in Sitamarhi during April averages 26%. The most humid April was 2020 at 43%, and the least humid was 1989 at 12%.
April receives about 6.4 kWh/m²/day of solar energy in Sitamarhi. The sunniest April was 1986 at 7.1 kWh/m²/day, and the cloudiest was 2025 at 5.5.
Average wind speed in Sitamarhi during April is 2.3 m/s. The windiest Aprils were 1992, 2016 and 2024 at 3.1 m/s, while the calmest was 2008 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.1°C | 31.3°C | 31.3°C | 31.5°C | 30.9°C | -0.2°C |
| Avg High | 39.7°C | 40.0°C | 39.4°C | 39.3°C | 39.0°C | -0.7°C |
| Avg Low | 22.5°C | 22.6°C | 23.2°C | 23.8°C | 22.9°C | +0.4°C |
| Avg Rain | 20 mm | 8 mm | 24 mm | 25 mm | 32 mm | +12 mm |
April temperatures in Sitamarhi have risen by about 0.4°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 0.2°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 39.5°C and nights around 23°C (mean 31.3°C, warmer than Sitamarhi'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 | 38.0°C | 30.5°C | 23.0°C | 43.3°C | 18.6°C | 56 mm | 39% | 2.5 m/s | 5.5 |
| 2024 | 40.9°C | 32.3°C | 23.6°C | 45.0°C | 19.1°C | 3 mm | 22% | 3.1 m/s | 6.4 |
| 2023 | 39.0°C | 30.9°C | 22.9°C | 44.9°C | 18.1°C | 18 mm | 28% | 2.4 m/s | 6.1 |
| 2022 | 39.5°C | 31.4°C | 23.3°C | 43.1°C | 20.3°C | 23 mm | 36% | 2.4 m/s | 5.9 |
| 2021 | 40.0°C | 31.3°C | 22.5°C | 42.0°C | 17.7°C | 26 mm | 21% | 2.2 m/s | 6.2 |
| 2020 | 36.6°C | 29.2°C | 21.9°C | 39.5°C | 17.9°C | 63 mm | 43% | 2.2 m/s | 6 |
| 2019 | 39.1°C | 31.5°C | 23.9°C | 44.1°C | 20.1°C | 36 mm | 35% | 2.2 m/s | 5.9 |
| 2018 | 37.6°C | 30.5°C | 23.4°C | 42.1°C | 21.0°C | 55 mm | 39% | 2.4 m/s | 5.7 |
| 2017 | 39.9°C | 32.0°C | 24.1°C | 42.8°C | 18.1°C | 26 mm | 31% | 2.3 m/s | 5.9 |
| 2016 🔥 | 42.8°C | 34.2°C | 25.7°C | 44.7°C | 21.4°C | 3 mm | 18% | 3.1 m/s | 6.5 |
| 2015 | 36.7°C | 29.8°C | 23.0°C | 41.2°C | 20.1°C | 50 mm | 42% | 2.1 m/s | 5.9 |
| 2014 | 40.3°C | 31.8°C | 23.3°C | 43.2°C | 17.5°C | 1 mm | 20% | 2.4 m/s | 6.9 |
| 2013 | 38.1°C | 30.4°C | 22.7°C | 42.8°C | 18.3°C | 30 mm | 32% | 2.4 m/s | 6.3 |
| 2012 | 39.6°C | 31.8°C | 23.9°C | 42.8°C | 21.3°C | 12 mm | 27% | 2.6 m/s | 6.5 |
| 2011 | 37.4°C | 29.9°C | 22.5°C | 39.6°C | 18.4°C | 37 mm | 32% | 2 m/s | 6.2 |
| 2010 | 41.7°C | 33.4°C | 25.2°C | 44.8°C | 21.3°C | 1 mm | 20% | 2.4 m/s | 6.5 |
| 2009 | 40.0°C | 31.5°C | 23.1°C | 42.1°C | 18.7°C | 2 mm | 20% | 2.1 m/s | 6.7 |
| 2008 | 38.2°C | 30.2°C | 22.1°C | 42.3°C | 17.4°C | 36 mm | 32% | 1.8 m/s | 6.8 |
| 2007 | 38.6°C | 31.1°C | 23.6°C | 40.7°C | 18.4°C | 28 mm | 35% | 1.9 m/s | 6.3 |
| 2006 | 38.5°C | 30.8°C | 23.2°C | 42.2°C | 19.7°C | 22 mm | 28% | 2 m/s | 6.2 |
| 2005 | 39.4°C | 31.3°C | 23.1°C | 42.5°C | 16.7°C | 17 mm | 21% | 1.9 m/s | 6.4 |
| 2004 🌧️ | 38.8°C | 31.2°C | 23.6°C | 45.0°C | 19.9°C | 79 mm | 35% | 2.1 m/s | 6 |
| 2003 | 40.4°C | 32.0°C | 23.7°C | 44.2°C | 19.2°C | 14 mm | 22% | 2.1 m/s | 6.6 |
| 2002 | 39.5°C | 31.6°C | 23.7°C | 43.6°C | 18.6°C | 12 mm | 31% | 2.7 m/s | 6.2 |
| 2001 | 39.9°C | 31.7°C | 23.6°C | 45.1°C | 20.0°C | 11 mm | 21% | 2.2 m/s | 6.7 |
| 2000 | 40.4°C | 31.6°C | 22.7°C | 43.5°C | 18.7°C | 19 mm | 22% | 2.4 m/s | 6.8 |
| 1999 | 42.2°C | 32.4°C | 22.7°C | 45.9°C | 18.7°C | 0 mm | 13% | 2.2 m/s | 6.7 |
| 1998 | 39.6°C | 31.3°C | 23.1°C | 42.1°C | 19.5°C | 10 mm | 27% | 2.3 m/s | 6.3 |
| 1997 ❄️ | 36.7°C | 29.2°C | 21.6°C | 40.3°C | 17.1°C | 27 mm | 31% | 2.2 m/s | 6 |
| 1996 | 40.4°C | 31.6°C | 22.8°C | 43.5°C | 15.2°C | 13 mm | 18% | 2.3 m/s | 6.5 |
| 1995 | 40.8°C | 31.8°C | 22.8°C | 44.5°C | 16.9°C | 0 mm | 14% | 2.4 m/s | 6.9 |
| 1994 | 40.0°C | 31.5°C | 23.0°C | 42.3°C | 19.1°C | 7 mm | 19% | 2.3 m/s | 6.6 |
| 1993 | 38.9°C | 30.4°C | 21.9°C | 42.7°C | 16.9°C | 16 mm | 27% | 2.5 m/s | 6.2 |
| 1992 | 41.7°C | 32.6°C | 23.5°C | 44.1°C | 18.6°C | 0 mm | 16% | 3.1 m/s | 6.5 |
| 1991 | 40.3°C | 31.6°C | 22.8°C | 43.3°C | 19.2°C | 1 mm | 16% | 2.2 m/s | 6.3 |
| 1990 | 39.6°C | 30.7°C | 21.9°C | 44.6°C | 16.5°C | 3 mm | 19% | 2.5 m/s | 6.8 |
| 1989 | 40.9°C | 31.0°C | 21.2°C | 44.0°C | 14.8°C | 1 mm | 12% | 2.8 m/s | 7 |
| 1988 | 40.3°C | 31.6°C | 23.0°C | 43.3°C | 15.7°C | 21 mm | 24% | 2 m/s | 6.2 |
| 1987 | 39.7°C | 31.2°C | 22.7°C | 41.9°C | 20.4°C | 22 mm | 21% | 2.6 m/s | 6.4 |
| 1986 | 39.9°C | 31.5°C | 23.1°C | 43.2°C | 19.3°C | 24 mm | 21% | 2.1 m/s | 7.1 |
| 1985 | 41.1°C | 32.6°C | 24.0°C | 44.9°C | 20.1°C | 1 mm | 20% | 2.8 m/s | 6.9 |
| 1984 | 41.3°C | 32.8°C | 24.3°C | 44.2°C | 21.2°C | 8 mm | 18% | 2.2 m/s | 6.3 |
| 1983 | 37.7°C | 29.6°C | 21.5°C | 43.8°C | 18.3°C | 8 mm | 26% | 2.7 m/s | — |
| 1982 | 38.4°C | 30.0°C | 21.6°C | 40.8°C | 17.7°C | 54 mm | 33% | 2.3 m/s | — |
| 1981 | 38.0°C | 29.7°C | 21.3°C | 40.9°C | 17.5°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 39.5°C with lows near 23°C (mean 31.3°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 0.4°C. Daytime highs moved from 39.3°C to 39.5°C and overnight lows from 22.5°C to 23.1°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 39.5°C daytime highs and 23°C at night.
Not quite — April is the 10th coolest month in Sitamarhi, averaging 31.3°C.
For April in Sitamarhi, pack light, breathable clothing and sun protection, with typical highs of 39.5°C and lows of 23°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.
