August is one of the warmer months of the year in Sitamarhi, with average highs near 32.8°C and lows around 26.1°C (mean 29.5°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 1993 — when the month averaged 31°C — while the coldest were 1987 and 2008 at 28.4°C. Typical August days reach 32.8°C with nights near 26.1°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in Sitamarhi, averaging 252 mm of rainfall. The wettest August on record was 2021 with 484 mm, while the driest was 2016 at 89 mm.
Relative humidity in Sitamarhi during August averages 82%. The most humid August was 2021 at 89%, and the least humid was 1993 at 70%.
August receives about 5 kWh/m²/day of solar energy in Sitamarhi. The sunniest August was 1984 at 5.8 kWh/m²/day, and the cloudiest was 2023 at 3.8.
Average wind speed in Sitamarhi during August is 2.2 m/s. The windiest August was 2002 at 2.9 m/s, while the calmest was 2012 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.3°C | 29.6°C | 29.5°C | 29.5°C | 29.2°C | -0.1°C |
| Avg High | 32.6°C | 33.1°C | 32.9°C | 32.8°C | 32.2°C | -0.4°C |
| Avg Low | 25.9°C | 26.1°C | 26.1°C | 26.2°C | 26.2°C | +0.3°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 0.1°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 32.8°C and nights around 26.1°C (mean 29.5°C) and higher rainfall (252 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 32.6°C | 29.3°C | 26.0°C | 35.8°C | 24.8°C | 255 mm | 84% | 2.4 m/s | 4.3 |
| 2024 | 32.3°C | 29.3°C | 26.4°C | 33.9°C | 25.1°C | 337 mm | 85% | 2.3 m/s | 5.1 |
| 2023 | 32.3°C | 29.3°C | 26.2°C | 36.0°C | 25.0°C | 445 mm | 86% | 2.3 m/s | 3.8 |
| 2022 | 33.5°C | 29.8°C | 26.2°C | 35.9°C | 24.6°C | 195 mm | 80% | 2.4 m/s | 5.1 |
| 2021 🌧️ | 31.3°C | 28.8°C | 26.3°C | 33.6°C | 24.9°C | 484 mm | 89% | 2 m/s | 3.9 |
| 2020 | 31.5°C | 28.8°C | 26.1°C | 33.4°C | 24.8°C | 163 mm | 88% | 2.1 m/s | 5.2 |
| 2019 | 33.4°C | 30.0°C | 26.7°C | 35.8°C | 25.6°C | 136 mm | 82% | 2.3 m/s | 5.2 |
| 2018 | 33.1°C | 29.8°C | 26.5°C | 35.8°C | 25.5°C | 187 mm | 81% | 1.9 m/s | 4.8 |
| 2017 | 31.8°C | 29.2°C | 26.5°C | 34.7°C | 25.3°C | 312 mm | 87% | 1.9 m/s | 4.4 |
| 2016 | 33.8°C | 30.2°C | 26.6°C | 36.8°C | 25.4°C | 89 mm | 79% | 2.2 m/s | 5.7 |
| 2015 | 33.0°C | 29.8°C | 26.6°C | 35.3°C | 25.2°C | 380 mm | 83% | 1.7 m/s | 4.8 |
| 2014 | 33.0°C | 29.7°C | 26.5°C | 35.3°C | 25.0°C | 342 mm | 83% | 1.7 m/s | 4.6 |
| 2013 | 32.9°C | 29.2°C | 25.5°C | 36.3°C | 23.7°C | 266 mm | 79% | 1.6 m/s | 5.2 |
| 2012 | 32.3°C | 28.9°C | 25.4°C | 34.3°C | 24.3°C | 243 mm | 82% | 1.5 m/s | 5.2 |
| 2011 | 31.7°C | 28.7°C | 25.7°C | 34.3°C | 24.6°C | 273 mm | 87% | 2.4 m/s | 5 |
| 2010 | 33.0°C | 29.7°C | 26.3°C | 36.6°C | 25.1°C | 293 mm | 82% | 2.1 m/s | 5.1 |
| 2009 | 32.8°C | 29.5°C | 26.3°C | 36.7°C | 24.0°C | 354 mm | 83% | 2 m/s | 4.7 |
| 2008 | 31.2°C | 28.4°C | 25.6°C | 34.1°C | 25.0°C | 410 mm | 89% | 2.2 m/s | 4.8 |
| 2007 | 31.8°C | 28.7°C | 25.7°C | 34.7°C | 24.0°C | 299 mm | 86% | 1.8 m/s | 4.9 |
| 2006 | 32.8°C | 29.4°C | 26.0°C | 35.6°C | 24.7°C | 220 mm | 81% | 2.4 m/s | 5.6 |
| 2005 | 32.4°C | 29.2°C | 26.0°C | 34.8°C | 24.5°C | 286 mm | 85% | 2 m/s | 4.6 |
| 2004 | 32.2°C | 29.1°C | 25.9°C | 33.5°C | 25.3°C | 249 mm | 85% | 2.6 m/s | 5.5 |
| 2003 | 33.4°C | 29.9°C | 26.4°C | 35.7°C | 25.4°C | 132 mm | 81% | 2.6 m/s | 5.3 |
| 2002 | 33.7°C | 29.8°C | 25.9°C | 37.7°C | 24.0°C | 157 mm | 77% | 2.9 m/s | 5.3 |
| 2001 | 35.0°C | 30.8°C | 26.7°C | 37.7°C | 24.9°C | 184 mm | 75% | 2.1 m/s | 5.2 |
| 2000 | 33.6°C | 29.9°C | 26.1°C | 36.7°C | 24.6°C | 234 mm | 79% | 2.2 m/s | 5 |
| 1999 | 33.6°C | 29.9°C | 26.1°C | 37.6°C | 23.8°C | 165 mm | 77% | 2.6 m/s | 4.5 |
| 1998 | 32.3°C | 29.3°C | 26.2°C | 35.6°C | 24.9°C | 257 mm | 85% | 2.1 m/s | 4.6 |
| 1997 | 31.6°C | 28.6°C | 25.7°C | 34.5°C | 24.3°C | 228 mm | 85% | 2.2 m/s | 4.9 |
| 1996 | 31.9°C | 28.8°C | 25.7°C | 35.2°C | 24.1°C | 274 mm | 85% | 2.2 m/s | 5.6 |
| 1995 | 32.1°C | 29.0°C | 25.9°C | 34.0°C | 24.7°C | 274 mm | 85% | 2.3 m/s | 5.3 |
| 1994 | 34.8°C | 30.8°C | 26.8°C | 39.4°C | 25.4°C | 191 mm | 73% | 2.5 m/s | 5.2 |
| 1993 🔥 | 35.2°C | 31.0°C | 26.8°C | 38.4°C | 23.9°C | 185 mm | 70% | 2.1 m/s | 4.5 |
| 1992 | 34.1°C | 30.2°C | 26.2°C | 38.3°C | 24.6°C | 203 mm | 75% | 2.7 m/s | 5.1 |
| 1991 | 34.0°C | 30.2°C | 26.4°C | 38.6°C | 24.9°C | 218 mm | 76% | 2.8 m/s | 4.1 |
| 1990 | 31.5°C | 28.6°C | 25.6°C | 35.0°C | 24.4°C | 151 mm | 87% | 2.2 m/s | 5.4 |
| 1989 | 33.0°C | 29.4°C | 25.8°C | 35.9°C | 23.2°C | 154 mm | 80% | 2.4 m/s | 5.3 |
| 1988 | 31.7°C | 28.7°C | 25.8°C | 35.1°C | 23.3°C | 381 mm | 86% | 2.2 m/s | 4.1 |
| 1987 ❄️ | 31.1°C | 28.4°C | 25.6°C | 34.4°C | 24.4°C | 437 mm | 88% | 2.4 m/s | 4.5 |
| 1986 | 33.1°C | 29.3°C | 25.5°C | 36.1°C | 23.2°C | 223 mm | 81% | 2.3 m/s | 5.6 |
| 1985 | 32.3°C | 29.2°C | 26.0°C | 34.7°C | 25.1°C | 281 mm | 84% | 2.1 m/s | 5.2 |
| 1984 | 32.2°C | 29.0°C | 25.8°C | 35.7°C | 24.7°C | 232 mm | 84% | 2.5 m/s | 5.8 |
| 1983 | 34.6°C | 30.5°C | 26.5°C | 36.7°C | 25.3°C | 114 mm | 75% | 2.8 m/s | — |
| 1982 | 33.8°C | 30.1°C | 26.3°C | 35.6°C | 25.1°C | 213 mm | 79% | 2.8 m/s | — |
| 1981 | 31.6°C | 28.8°C | 26.0°C | 33.9°C | 25.1°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 32.8°C with lows near 26.1°C (mean 29.5°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 — but days and nights have moved in opposite directions. Overnight lows rose from 26.1°C to 26.2°C while daytime highs eased from 32.9°C to 32.4°C, narrowing the gap between day and night.
August is one of the warmer months of the year in Sitamarhi and a relatively wet time of year, so plan for around 32.8°C daytime highs and 26.1°C at night.
Not quite — August is the 8th coolest month in Sitamarhi, averaging 29.5°C.
For August in Sitamarhi, pack light, breathable clothing and sun protection, with typical highs of 32.8°C and lows of 26.1°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.
