August is one of the warmer months of the year in West Siang, with average highs near 30.5°C and lows around 22.5°C (mean 26.5°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 Augusts in West Siang were 2016 and 2019 — when the month averaged 27.8°C — while the coldest was 1993 at 25.2°C. Typical August days reach 30.5°C with nights near 22.5°C. The long-term August temperature trend is broadly flat.
August is a relatively wet time of year in West Siang, averaging 435 mm of rainfall. The wettest August on record was 2015 with 860 mm, while the driest was 1982 at 85 mm.
Relative humidity in West Siang during August averages 81%. The most humid August was 2021 at 87%, and the least humid was 2006 at 74%.
August receives about 3.9 kWh/m²/day of solar energy in West Siang. The sunniest August was 2016 at 5.2 kWh/m²/day, and the cloudiest was 1987 at 2.7.
Average wind speed in West Siang during August is 0.3 m/s. The windiest Augusts were 2018, 2019 and 2022, among others at 0.3 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.3°C | 26.2°C | 26.7°C | 26.7°C | 26.7°C | +0.4°C |
| Avg High | 30.4°C | 30.4°C | 30.9°C | 30.4°C | 30.3°C | -0.1°C |
| Avg Low | 22.1°C | 22.0°C | 22.5°C | 22.9°C | 23.0°C | +0.9°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 30.5°C and nights around 22.5°C (mean 26.5°C) and higher rainfall (435 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 | 29.2°C | 25.9°C | 22.7°C | 32.9°C | 21.4°C | 480 mm | 87% | 0.2 m/s | 3.7 |
| 2024 | 31.6°C | 27.6°C | 23.5°C | 34.7°C | 21.7°C | 484 mm | 81% | 0.2 m/s | 5.1 |
| 2023 | 30.3°C | 26.6°C | 23.0°C | 33.3°C | 20.4°C | 544 mm | 85% | 0.2 m/s | 3.4 |
| 2022 | 31.7°C | 27.5°C | 23.4°C | 34.5°C | 21.5°C | 321 mm | 80% | 0.3 m/s | 4.5 |
| 2021 | 28.8°C | 25.6°C | 22.5°C | 34.1°C | 19.3°C | 838 mm | 87% | 0.2 m/s | 3.2 |
| 2020 | 30.4°C | 26.8°C | 23.2°C | 35.1°C | 21.6°C | 510 mm | 84% | 0.2 m/s | 4.3 |
| 2019 | 31.7°C | 27.8°C | 23.8°C | 36.4°C | 22.4°C | 211 mm | 81% | 0.3 m/s | 4.9 |
| 2018 | 30.6°C | 26.9°C | 23.2°C | 34.4°C | 22.0°C | 282 mm | 83% | 0.3 m/s | 4.1 |
| 2017 | 30.6°C | 27.0°C | 23.3°C | 35.3°C | 21.0°C | 602 mm | 83% | 0.2 m/s | 3.9 |
| 2016 🔥 | 31.9°C | 27.8°C | 23.7°C | 34.9°C | 21.9°C | 205 mm | 80% | 0.3 m/s | 5.2 |
| 2015 🌧️ | 28.8°C | 25.6°C | 22.4°C | 33.7°C | 19.9°C | 860 mm | 87% | 0.2 m/s | 3.5 |
| 2014 | 29.1°C | 25.8°C | 22.5°C | 33.7°C | 20.4°C | 600 mm | 87% | 0.2 m/s | 3.5 |
| 2013 | 30.1°C | 26.4°C | 22.8°C | 33.6°C | 19.8°C | 460 mm | 84% | 0.2 m/s | 5 |
| 2012 | 30.5°C | 26.9°C | 23.2°C | 34.0°C | 21.2°C | 466 mm | 84% | 0.2 m/s | 4.3 |
| 2011 | 30.6°C | 26.2°C | 21.8°C | 36.3°C | 20.0°C | 342 mm | 78% | 0.3 m/s | 4.8 |
| 2010 | 30.1°C | 26.4°C | 22.7°C | 33.3°C | 21.3°C | 517 mm | 82% | 0.3 m/s | 3.9 |
| 2009 | 30.2°C | 26.3°C | 22.4°C | 35.0°C | 20.6°C | 660 mm | 81% | 0.3 m/s | 3.8 |
| 2008 | 29.3°C | 25.6°C | 21.9°C | 34.8°C | 20.2°C | 469 mm | 83% | 0.2 m/s | 3.5 |
| 2007 | 31.8°C | 27.3°C | 22.8°C | 35.7°C | 20.7°C | 328 mm | 77% | 0.3 m/s | 4.6 |
| 2006 | 32.4°C | 27.6°C | 22.8°C | 36.1°C | 21.5°C | 339 mm | 74% | 0.3 m/s | 5.1 |
| 2005 | 30.5°C | 26.6°C | 22.7°C | 35.7°C | 20.9°C | 403 mm | 81% | 0.2 m/s | 3.3 |
| 2004 | 31.0°C | 26.8°C | 22.6°C | 33.8°C | 20.7°C | 404 mm | 79% | 0.3 m/s | 4.2 |
| 2003 | 31.1°C | 27.0°C | 23.0°C | 34.5°C | 21.2°C | 454 mm | 80% | 0.2 m/s | 3.6 |
| 2002 | 31.0°C | 26.5°C | 22.0°C | 34.6°C | 20.4°C | 445 mm | 78% | 0.3 m/s | 4.3 |
| 2001 | 32.1°C | 27.4°C | 22.7°C | 36.9°C | 21.2°C | 319 mm | 76% | 0.2 m/s | 4 |
| 2000 | 29.9°C | 26.1°C | 22.3°C | 33.5°C | 20.7°C | 337 mm | 82% | 0.2 m/s | 4.2 |
| 1999 | 30.0°C | 26.2°C | 22.3°C | 35.3°C | 19.9°C | 468 mm | 80% | 0.2 m/s | 4 |
| 1998 | 28.7°C | 25.3°C | 21.8°C | 32.5°C | 20.7°C | 503 mm | 86% | 0.2 m/s | 4.1 |
| 1997 | 31.0°C | 26.5°C | 22.1°C | 35.5°C | 20.1°C | 273 mm | 78% | 0.3 m/s | 4.5 |
| 1996 | 30.8°C | 26.4°C | 22.0°C | 33.9°C | 19.9°C | 525 mm | 78% | 0.3 m/s | 3.3 |
| 1995 | 30.7°C | 26.3°C | 21.9°C | 33.9°C | 20.3°C | 425 mm | 79% | 0.2 m/s | 4.2 |
| 1994 | 32.0°C | 27.2°C | 22.4°C | 35.7°C | 20.7°C | 421 mm | 76% | 0.3 m/s | 3.5 |
| 1993 ❄️ | 28.6°C | 25.2°C | 21.7°C | 32.5°C | 19.2°C | 708 mm | 84% | 0.2 m/s | 3.2 |
| 1992 | 30.7°C | 26.2°C | 21.7°C | 33.5°C | 19.0°C | 332 mm | 79% | 0.3 m/s | 3.1 |
| 1991 | 30.1°C | 26.0°C | 21.8°C | 34.6°C | 19.7°C | 456 mm | 80% | 0.2 m/s | 2.8 |
| 1990 | 31.3°C | 26.8°C | 22.3°C | 34.3°C | 21.0°C | 308 mm | 78% | 0.3 m/s | 3.4 |
| 1989 | 30.6°C | 26.2°C | 21.8°C | 33.3°C | 20.5°C | 353 mm | 78% | 0.3 m/s | 3.5 |
| 1988 | 28.9°C | 25.3°C | 21.8°C | 33.8°C | 19.4°C | 710 mm | 85% | 0.2 m/s | 3 |
| 1987 | 29.8°C | 25.8°C | 21.7°C | 35.6°C | 19.5°C | 478 mm | 81% | 0.3 m/s | 2.7 |
| 1986 | 30.8°C | 26.2°C | 21.7°C | 35.6°C | 19.7°C | 480 mm | 78% | 0.3 m/s | 3.6 |
| 1985 | 31.1°C | 26.8°C | 22.5°C | 34.2°C | 20.5°C | 280 mm | 79% | 0.3 m/s | 3.5 |
| 1984 | 30.8°C | 26.5°C | 22.1°C | 35.6°C | 20.1°C | 317 mm | 78% | 0.3 m/s | 3.3 |
| 1983 | 31.2°C | 26.7°C | 22.2°C | 34.4°C | 20.4°C | 178 mm | 77% | 0.3 m/s | — |
| 1982 | 30.8°C | 26.5°C | 22.2°C | 34.2°C | 21.0°C | 85 mm | 78% | 0.3 m/s | — |
| 1981 | 30.0°C | 26.3°C | 22.5°C | 34.0°C | 21.1°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 30.5°C with lows near 22.5°C (mean 26.5°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 held steady by about 0°C — but days and nights have moved in opposite directions. Overnight lows rose from 22.3°C to 23°C while daytime highs eased from 30.8°C to 30.3°C, narrowing the gap between day and night.
August is one of the warmer months of the year in West Siang and a relatively wet time of year, so plan for around 30.5°C daytime highs and 22.5°C at night.
Not quite — August is the 12th coolest month in West Siang, averaging 26.5°C.
For August in West Siang, pack light, breathable clothing and sun protection, with typical highs of 30.5°C and lows of 22.5°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.
