August is one of the warmer months of the year in West Siang, with average highs near 34.5°C and lows around 20.6°C (mean 27.6°C). It is a relatively wet time of year, averaging 435 mm of rainfall and 81% relative humidity across the period.
August is one of the warmer months of the year in West Siang. Across 45 years of records, the warmest August in West Siang was 2019 — when the month averaged 29.4°C — while the coldest was 1993 at 25.8°C. Typical August days reach 34.5°C with nights near 20.6°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 | 27.4°C | 27.1°C | 27.9°C | 27.8°C | 27.6°C | +0.2°C |
| Avg High | 34.5°C | 34.2°C | 35.1°C | 34.6°C | 34.1°C | -0.4°C |
| Avg Low | 20.2°C | 20.1°C | 20.8°C | 21.0°C | 21.0°C | +0.8°C |
| Avg Rain | 365 mm | 442 mm | 416 mm | 455 mm | 530 mm | +165 mm |
August temperatures in West Siang have stayed relatively stable across the record.
August has ranged from a record low of 19°C (1992) to a record high of 36.9°C (2001).
Rainfall in August is a relatively wet time of year, averaging 435 mm, with a wettest year of 860 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.3°C per decade, narrowing the gap between day and night.
A quieter season to visit West Siang
If your dates are flexible, the more temperate months of October and November tend to be the most comfortable for visiting West Siang. That said, August — with days averaging 34.5°C and nights around 20.6°C (mean 27.6°C) and higher rainfall (435 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 | 32.9°C | 21.4°C | 27.2°C | 480 mm | 87% | 0.2 m/s | 3.7 |
| 2024 | 34.7°C | 21.7°C | 28.2°C | 484 mm | 81% | 0.2 m/s | 5.1 |
| 2023 | 33.3°C | 20.4°C | 26.9°C | 544 mm | 85% | 0.2 m/s | 3.4 |
| 2022 | 34.5°C | 21.5°C | 28.0°C | 321 mm | 80% | 0.3 m/s | 4.5 |
| 2021 | 34.1°C | 19.3°C | 26.7°C | 838 mm | 87% | 0.2 m/s | 3.2 |
| 2020 | 35.1°C | 21.6°C | 28.3°C | 510 mm | 84% | 0.2 m/s | 4.3 |
| 2019 🔥 | 36.4°C | 22.4°C | 29.4°C | 211 mm | 81% | 0.3 m/s | 4.9 |
| 2018 | 34.4°C | 22.0°C | 28.2°C | 282 mm | 83% | 0.3 m/s | 4.1 |
| 2017 | 35.3°C | 21.0°C | 28.1°C | 602 mm | 83% | 0.2 m/s | 3.9 |
| 2016 | 34.9°C | 21.9°C | 28.4°C | 205 mm | 80% | 0.3 m/s | 5.2 |
| 2015 🌧️ | 33.7°C | 19.9°C | 26.8°C | 860 mm | 87% | 0.2 m/s | 3.5 |
| 2014 | 33.7°C | 20.4°C | 27.0°C | 600 mm | 87% | 0.2 m/s | 3.5 |
| 2013 | 33.6°C | 19.8°C | 26.7°C | 460 mm | 84% | 0.2 m/s | 5 |
| 2012 | 34.0°C | 21.2°C | 27.6°C | 466 mm | 84% | 0.2 m/s | 4.3 |
| 2011 | 36.3°C | 20.0°C | 28.1°C | 342 mm | 78% | 0.3 m/s | 4.8 |
| 2010 | 33.3°C | 21.3°C | 27.3°C | 517 mm | 82% | 0.3 m/s | 3.9 |
| 2009 | 35.0°C | 20.6°C | 27.8°C | 660 mm | 81% | 0.3 m/s | 3.8 |
| 2008 | 34.8°C | 20.2°C | 27.5°C | 469 mm | 83% | 0.2 m/s | 3.5 |
| 2007 | 35.7°C | 20.7°C | 28.2°C | 328 mm | 77% | 0.3 m/s | 4.6 |
| 2006 | 36.1°C | 21.5°C | 28.8°C | 339 mm | 74% | 0.3 m/s | 5.1 |
| 2005 | 35.7°C | 20.9°C | 28.3°C | 403 mm | 81% | 0.2 m/s | 3.3 |
| 2004 | 33.8°C | 20.7°C | 27.3°C | 404 mm | 79% | 0.3 m/s | 4.2 |
| 2003 | 34.5°C | 21.2°C | 27.9°C | 454 mm | 80% | 0.2 m/s | 3.6 |
| 2002 | 34.6°C | 20.4°C | 27.5°C | 445 mm | 78% | 0.3 m/s | 4.3 |
| 2001 | 36.9°C | 21.2°C | 29.0°C | 319 mm | 76% | 0.2 m/s | 4 |
| 2000 | 33.5°C | 20.7°C | 27.1°C | 337 mm | 82% | 0.2 m/s | 4.2 |
| 1999 | 35.3°C | 19.9°C | 27.6°C | 468 mm | 80% | 0.2 m/s | 4 |
| 1998 | 32.5°C | 20.7°C | 26.6°C | 503 mm | 86% | 0.2 m/s | 4.1 |
| 1997 | 35.5°C | 20.1°C | 27.8°C | 273 mm | 78% | 0.3 m/s | 4.5 |
| 1996 | 33.9°C | 19.9°C | 26.9°C | 525 mm | 78% | 0.3 m/s | 3.3 |
| 1995 | 33.9°C | 20.3°C | 27.1°C | 425 mm | 79% | 0.2 m/s | 4.2 |
| 1994 | 35.7°C | 20.7°C | 28.2°C | 421 mm | 76% | 0.3 m/s | 3.5 |
| 1993 ❄️ | 32.5°C | 19.2°C | 25.8°C | 708 mm | 84% | 0.2 m/s | 3.2 |
| 1992 | 33.5°C | 19.0°C | 26.3°C | 332 mm | 79% | 0.3 m/s | 3.1 |
| 1991 | 34.6°C | 19.7°C | 27.1°C | 456 mm | 80% | 0.2 m/s | 2.8 |
| 1990 | 34.3°C | 21.0°C | 27.7°C | 308 mm | 78% | 0.3 m/s | 3.4 |
| 1989 | 33.3°C | 20.5°C | 26.9°C | 353 mm | 78% | 0.3 m/s | 3.5 |
| 1988 | 33.8°C | 19.4°C | 26.6°C | 710 mm | 85% | 0.2 m/s | 3 |
| 1987 | 35.6°C | 19.5°C | 27.6°C | 478 mm | 81% | 0.3 m/s | 2.7 |
| 1986 | 35.6°C | 19.7°C | 27.7°C | 480 mm | 78% | 0.3 m/s | 3.6 |
| 1985 | 34.2°C | 20.5°C | 27.3°C | 280 mm | 79% | 0.3 m/s | 3.5 |
| 1984 | 35.6°C | 20.1°C | 27.8°C | 317 mm | 78% | 0.3 m/s | 3.3 |
| 1983 | 34.4°C | 20.4°C | 27.4°C | 178 mm | 77% | 0.3 m/s | — |
| 1982 | 34.2°C | 21.0°C | 27.6°C | 85 mm | 78% | 0.3 m/s | — |
| 1981 | 34.0°C | 21.1°C | 27.5°C | 403 mm | 82% | 0.3 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 34.5°C with lows near 20.6°C (mean 27.6°C), based on 45 years of NASA POWER data.
August averages 435 mm of rainfall in West Siang, a relatively wet time of year. The wettest on record was 860 mm in 2015.
The hottest August reached 36.9°C in 2001. The coldest dipped to 19°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have fallen by about 0.1°C. Daytime highs moved from 34.5°C to 33.9°C and overnight lows from 20.6°C to 20.9°C over the same span.
August is one of the warmer months of the year in West Siang and a relatively wet time of year, so plan for around 34.5°C daytime highs and 20.6°C at night.
Not quite — August is the 12th coolest month in West Siang, averaging 27.6°C.
For August in West Siang, pack light, breathable clothing and sun protection, with typical highs of 34.5°C and lows of 20.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 81% — quite humid.
Average wind speed in August is 0.3 m/s. The windiest August on record averaged 0.3 m/s (1981).
The wettest August on record was 2015 with 860 mm. On average, August sees 435 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 West 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.
