August is one of the warmer months of the year in Sitamarhi, with average highs near 35.7°C and lows around 24.7°C (mean 30.2°C). It is a relatively wet time of year, averaging 252 mm of rainfall and 82% relative humidity across the period.
August is one of the warmer months of the year in Sitamarhi. Across 45 years of records, the warmest August in Sitamarhi was 1994 — when the month averaged 32.4°C — while the coldest was 2020 at 29.1°C. Typical August days reach 35.7°C with nights near 24.7°C. The long-term August temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.9°C | 30.6°C | 30.2°C | 30.2°C | 29.8°C | -0.1°C |
| Avg High | 35.3°C | 36.7°C | 35.7°C | 35.5°C | 34.8°C | -0.5°C |
| Avg Low | 24.4°C | 24.5°C | 24.6°C | 25.0°C | 24.9°C | +0.5°C |
| Avg Rain | 253 mm | 214 mm | 253 mm | 252 mm | 313 mm | +60 mm |
August temperatures in Sitamarhi have stayed relatively stable across the record.
August has ranged from a record low of 23.2°C (1986) to a record high of 39.4°C (1994).
Rainfall in August is a relatively wet time of year, averaging 252 mm, with a wettest year of 484 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A quieter season to visit Sitamarhi
If your dates are flexible, the more temperate months of November and February tend to be the most comfortable for visiting Sitamarhi. That said, August — with days averaging 35.7°C and nights around 24.7°C (mean 30.2°C) and higher rainfall (252 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 | 35.8°C | 24.8°C | 30.3°C | 255 mm | 84% | 2.4 m/s | 4.3 |
| 2024 | 33.9°C | 25.1°C | 29.5°C | 337 mm | 85% | 2.3 m/s | 5.1 |
| 2023 | 36.0°C | 25.0°C | 30.5°C | 445 mm | 86% | 2.3 m/s | 3.8 |
| 2022 | 35.9°C | 24.6°C | 30.3°C | 195 mm | 80% | 2.4 m/s | 5.1 |
| 2021 🌧️ | 33.6°C | 24.9°C | 29.2°C | 484 mm | 89% | 2 m/s | 3.9 |
| 2020 ❄️ | 33.4°C | 24.8°C | 29.1°C | 163 mm | 88% | 2.1 m/s | 5.2 |
| 2019 | 35.8°C | 25.6°C | 30.7°C | 136 mm | 82% | 2.3 m/s | 5.2 |
| 2018 | 35.8°C | 25.5°C | 30.6°C | 187 mm | 81% | 1.9 m/s | 4.8 |
| 2017 | 34.7°C | 25.3°C | 30.0°C | 312 mm | 87% | 1.9 m/s | 4.4 |
| 2016 | 36.8°C | 25.4°C | 31.1°C | 89 mm | 79% | 2.2 m/s | 5.7 |
| 2015 | 35.3°C | 25.2°C | 30.2°C | 380 mm | 83% | 1.7 m/s | 4.8 |
| 2014 | 35.3°C | 25.0°C | 30.1°C | 342 mm | 83% | 1.7 m/s | 4.6 |
| 2013 | 36.3°C | 23.7°C | 30.0°C | 266 mm | 79% | 1.6 m/s | 5.2 |
| 2012 | 34.3°C | 24.3°C | 29.3°C | 243 mm | 82% | 1.5 m/s | 5.2 |
| 2011 | 34.3°C | 24.6°C | 29.5°C | 273 mm | 87% | 2.4 m/s | 5 |
| 2010 | 36.6°C | 25.1°C | 30.9°C | 293 mm | 82% | 2.1 m/s | 5.1 |
| 2009 | 36.7°C | 24.0°C | 30.4°C | 354 mm | 83% | 2 m/s | 4.7 |
| 2008 | 34.1°C | 25.0°C | 29.6°C | 410 mm | 89% | 2.2 m/s | 4.8 |
| 2007 | 34.7°C | 24.0°C | 29.4°C | 299 mm | 86% | 1.8 m/s | 4.9 |
| 2006 | 35.6°C | 24.7°C | 30.1°C | 220 mm | 81% | 2.4 m/s | 5.6 |
| 2005 | 34.8°C | 24.5°C | 29.6°C | 286 mm | 85% | 2 m/s | 4.6 |
| 2004 | 33.5°C | 25.3°C | 29.4°C | 249 mm | 85% | 2.6 m/s | 5.5 |
| 2003 | 35.7°C | 25.4°C | 30.6°C | 132 mm | 81% | 2.6 m/s | 5.3 |
| 2002 | 37.7°C | 24.0°C | 30.8°C | 157 mm | 77% | 2.9 m/s | 5.3 |
| 2001 | 37.7°C | 24.9°C | 31.3°C | 184 mm | 75% | 2.1 m/s | 5.2 |
| 2000 | 36.7°C | 24.6°C | 30.7°C | 234 mm | 79% | 2.2 m/s | 5 |
| 1999 | 37.6°C | 23.8°C | 30.7°C | 165 mm | 77% | 2.6 m/s | 4.5 |
| 1998 | 35.6°C | 24.9°C | 30.2°C | 257 mm | 85% | 2.1 m/s | 4.6 |
| 1997 | 34.5°C | 24.3°C | 29.4°C | 228 mm | 85% | 2.2 m/s | 4.9 |
| 1996 | 35.2°C | 24.1°C | 29.7°C | 274 mm | 85% | 2.2 m/s | 5.6 |
| 1995 | 34.0°C | 24.7°C | 29.4°C | 274 mm | 85% | 2.3 m/s | 5.3 |
| 1994 🔥 | 39.4°C | 25.4°C | 32.4°C | 191 mm | 73% | 2.5 m/s | 5.2 |
| 1993 | 38.4°C | 23.9°C | 31.2°C | 185 mm | 70% | 2.1 m/s | 4.5 |
| 1992 | 38.3°C | 24.6°C | 31.4°C | 203 mm | 75% | 2.7 m/s | 5.1 |
| 1991 | 38.6°C | 24.9°C | 31.7°C | 218 mm | 76% | 2.8 m/s | 4.1 |
| 1990 | 35.0°C | 24.4°C | 29.7°C | 151 mm | 87% | 2.2 m/s | 5.4 |
| 1989 | 35.9°C | 23.2°C | 29.5°C | 154 mm | 80% | 2.4 m/s | 5.3 |
| 1988 | 35.1°C | 23.3°C | 29.2°C | 381 mm | 86% | 2.2 m/s | 4.1 |
| 1987 | 34.4°C | 24.4°C | 29.4°C | 437 mm | 88% | 2.4 m/s | 4.5 |
| 1986 | 36.1°C | 23.2°C | 29.7°C | 223 mm | 81% | 2.3 m/s | 5.6 |
| 1985 | 34.7°C | 25.1°C | 29.9°C | 281 mm | 84% | 2.1 m/s | 5.2 |
| 1984 | 35.7°C | 24.7°C | 30.2°C | 232 mm | 84% | 2.5 m/s | 5.8 |
| 1983 | 36.7°C | 25.3°C | 31.0°C | 114 mm | 75% | 2.8 m/s | — |
| 1982 | 35.6°C | 25.1°C | 30.4°C | 213 mm | 79% | 2.8 m/s | — |
| 1981 | 33.9°C | 25.1°C | 29.5°C | 245 mm | 88% | 2.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 35.7°C with lows near 24.7°C (mean 30.2°C), based on 45 years of NASA POWER data.
August averages 252 mm of rainfall in Sitamarhi, a relatively wet time of year. The wettest on record was 484 mm in 2021.
The hottest August reached 39.4°C in 1994. The coldest dipped to 23.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.2°C. Daytime highs moved from 35.3°C to 35°C and overnight lows from 25.1°C to 24.9°C over the same span.
August is one of the warmer months of the year in Sitamarhi and a relatively wet time of year, so plan for around 35.7°C daytime highs and 24.7°C at night.
Not quite — August is the 8th coolest month in Sitamarhi, averaging 30.2°C.
For August in Sitamarhi, pack light, breathable clothing and sun protection, with typical highs of 35.7°C and lows of 24.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 82% — quite humid.
Average wind speed in August is 2.2 m/s. The windiest August on record averaged 2.9 m/s (2002).
The wettest August on record was 2021 with 484 mm. On average, August sees 252 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 August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
