August is one of the warmer months of the year in Upper Siang, with average highs near 30.4°C and lows around 16.3°C (mean 23.4°C). It is a relatively wet time of year, averaging 367 mm of rainfall and 82% relative humidity across the period.
August is one of the warmer months of the year in Upper Siang. Across 45 years of records, the warmest August in Upper Siang was 2015 — when the month averaged 25.7°C — while the coldest was 1993 at 21.4°C. Typical August days reach 30.4°C with nights near 16.3°C. The long-term trend is warming, about 0.3°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.9°C | 22.9°C | 23.4°C | 24.0°C | 23.7°C | +0.8°C |
| Avg High | 30.0°C | 29.9°C | 30.3°C | 31.3°C | 30.5°C | +0.5°C |
| Avg Low | 15.8°C | 15.8°C | 16.6°C | 16.6°C | 17.0°C | +1.2°C |
| Avg Rain | 306 mm | 379 mm | 349 mm | 377 mm | 450 mm | +144 mm |
August temperatures in Upper Siang have risen by about 0.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 14.6°C (1999) to a record high of 36.1°C (2015).
Rainfall in August is a relatively wet time of year, averaging 367 mm, with a wettest year of 771 mm.
A good time to visit Upper Siang
August is a good time to visit Upper Siang, with days averaging 30.4°C and nights around 16.3°C (mean 23.4°C, warmer than Upper Siang's yearly average) and higher rainfall. October and November are marginally more temperate, but August still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 29.9°C | 17.9°C | 23.9°C | 391 mm | 87% | 0.2 m/s | 3.7 |
| 2024 | 30.0°C | 17.3°C | 23.6°C | 364 mm | 82% | 0.2 m/s | 4.9 |
| 2023 | 28.9°C | 15.8°C | 22.3°C | 470 mm | 86% | 0.2 m/s | 3.6 |
| 2022 | 32.7°C | 17.7°C | 25.2°C | 243 mm | 82% | 0.2 m/s | 4.8 |
| 2021 🌧️ | 30.0°C | 16.3°C | 23.2°C | 771 mm | 88% | 0.1 m/s | 3.3 |
| 2020 | 31.2°C | 17.2°C | 24.2°C | 460 mm | 86% | 0.2 m/s | 4.3 |
| 2019 | 31.1°C | 18.2°C | 24.6°C | 179 mm | 81% | 0.2 m/s | 5 |
| 2018 | 30.5°C | 17.9°C | 24.2°C | 201 mm | 83% | 0.2 m/s | 4.3 |
| 2017 | 31.6°C | 16.3°C | 23.9°C | 529 mm | 84% | 0.2 m/s | 4.2 |
| 2016 | 31.5°C | 18.0°C | 24.7°C | 186 mm | 80% | 0.2 m/s | 5.4 |
| 2015 🔥 | 36.1°C | 15.3°C | 25.7°C | 755 mm | 88% | 0.2 m/s | 3.5 |
| 2014 | 28.3°C | 15.9°C | 22.1°C | 534 mm | 88% | 0.2 m/s | 3.5 |
| 2013 | 32.3°C | 16.5°C | 24.4°C | 358 mm | 84% | 0.2 m/s | 4.8 |
| 2012 | 30.4°C | 16.4°C | 23.4°C | 380 mm | 84% | 0.2 m/s | 4.3 |
| 2011 | 31.9°C | 14.6°C | 23.2°C | 256 mm | 80% | 0.3 m/s | 4.8 |
| 2010 | 29.5°C | 17.2°C | 23.4°C | 388 mm | 84% | 0.2 m/s | 4.2 |
| 2009 | 29.9°C | 16.1°C | 23.0°C | 512 mm | 83% | 0.2 m/s | 4 |
| 2008 | 29.7°C | 16.0°C | 22.8°C | 390 mm | 85% | 0.2 m/s | 3.3 |
| 2007 | 30.9°C | 16.4°C | 23.7°C | 251 mm | 79% | 0.3 m/s | 4.6 |
| 2006 | 31.2°C | 17.0°C | 24.1°C | 234 mm | 75% | 0.3 m/s | 5 |
| 2005 | 31.0°C | 16.5°C | 23.7°C | 331 mm | 83% | 0.2 m/s | 3.4 |
| 2004 | 29.0°C | 17.3°C | 23.1°C | 327 mm | 81% | 0.3 m/s | 4.4 |
| 2003 | 29.8°C | 17.5°C | 23.7°C | 381 mm | 82% | 0.2 m/s | 3.8 |
| 2002 | 30.0°C | 16.2°C | 23.1°C | 363 mm | 79% | 0.3 m/s | 4.5 |
| 2001 | 31.7°C | 17.0°C | 24.3°C | 332 mm | 78% | 0.2 m/s | 4.1 |
| 2000 | 29.6°C | 16.0°C | 22.8°C | 363 mm | 83% | 0.2 m/s | 3.8 |
| 1999 | 30.4°C | 14.6°C | 22.5°C | 428 mm | 82% | 0.2 m/s | 3.9 |
| 1998 | 27.8°C | 16.0°C | 21.9°C | 579 mm | 88% | 0.2 m/s | 3.4 |
| 1997 | 30.3°C | 16.6°C | 23.5°C | 218 mm | 79% | 0.2 m/s | 4.6 |
| 1996 | 30.5°C | 16.0°C | 23.3°C | 413 mm | 80% | 0.3 m/s | 3.6 |
| 1995 | 29.6°C | 15.7°C | 22.7°C | 339 mm | 80% | 0.2 m/s | 4.6 |
| 1994 | 31.7°C | 15.7°C | 23.7°C | 343 mm | 77% | 0.3 m/s | 3.7 |
| 1993 ❄️ | 27.5°C | 15.2°C | 21.4°C | 565 mm | 86% | 0.2 m/s | 2.8 |
| 1992 | 30.0°C | 15.2°C | 22.6°C | 289 mm | 81% | 0.2 m/s | 3.4 |
| 1991 | 29.6°C | 16.3°C | 23.0°C | 374 mm | 82% | 0.2 m/s | 3.2 |
| 1990 | 31.9°C | 16.6°C | 24.2°C | 247 mm | 80% | 0.2 m/s | 3.5 |
| 1989 | 28.7°C | 15.3°C | 22.0°C | 290 mm | 80% | 0.3 m/s | 3.7 |
| 1988 | 29.5°C | 15.4°C | 22.5°C | 562 mm | 86% | 0.2 m/s | 2.6 |
| 1987 | 30.6°C | 15.3°C | 23.0°C | 455 mm | 83% | 0.2 m/s | 2.8 |
| 1986 | 29.1°C | 14.8°C | 22.0°C | 434 mm | 80% | 0.2 m/s | 3.8 |
| 1985 | 29.7°C | 16.8°C | 23.2°C | 215 mm | 81% | 0.2 m/s | 3.7 |
| 1984 | 33.0°C | 15.9°C | 24.4°C | 251 mm | 80% | 0.2 m/s | 3.6 |
| 1983 | 29.3°C | 16.1°C | 22.7°C | 163 mm | 81% | 0.2 m/s | — |
| 1982 | 30.1°C | 16.2°C | 23.1°C | 74 mm | 80% | 0.3 m/s | — |
| 1981 | 30.0°C | 16.5°C | 23.3°C | 313 mm | 84% | 0.2 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 30.4°C with lows near 16.3°C (mean 23.4°C), based on 45 years of NASA POWER data.
August averages 367 mm of rainfall in Upper Siang, a relatively wet time of year. The wettest on record was 771 mm in 2021.
The hottest August reached 36.1°C in 2015. The coldest dipped to 14.6°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.3°C. Daytime highs moved from 30.4°C to 30.3°C and overnight lows from 16.3°C to 17°C over the same span.
August is one of the warmer months of the year in Upper Siang and a relatively wet time of year, so plan for around 30.4°C daytime highs and 16.3°C at night.
Not quite — August is the 12th coolest month in Upper Siang, averaging 23.4°C.
For August in Upper Siang, pack light, breathable clothing and sun protection, with typical highs of 30.4°C and lows of 16.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 82% — quite humid.
Average wind speed in August is 0.2 m/s. The windiest August on record averaged 0.3 m/s (1982).
The wettest August on record was 2021 with 771 mm. On average, August sees 367 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 Upper Siang 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.
