July is one of the warmer months of the year in West Siang, with average highs near 34.3°C and lows around 20.6°C (mean 27.5°C). It is a relatively wet time of year, averaging 554 mm of rainfall and 83% relative humidity across the period.
July is one of the warmer months of the year in West Siang. Across 45 years of records, the warmest July in West Siang was 2001 — when the month averaged 29.7°C — while the coldest was 1987 at 26.1°C. Typical July days reach 34.3°C with nights near 20.6°C. The long-term trend is warming, about 0.2°C per decade.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.9°C | 27.3°C | 27.8°C | 27.5°C | 27.7°C | +0.8°C |
| Avg High | 33.8°C | 34.6°C | 35.1°C | 33.8°C | 34.1°C | +0.3°C |
| Avg Low | 20.0°C | 20.1°C | 20.6°C | 21.2°C | 21.2°C | +1.2°C |
| Avg Rain | 585 mm | 492 mm | 523 mm | 574 mm | 626 mm | +41 mm |
July temperatures in West Siang have risen by about 0.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 18.9°C (1989) to a record high of 38°C (2001).
Rainfall in July is a relatively wet time of year, averaging 554 mm, with a wettest year of 1210 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.4°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, July — with days averaging 34.3°C and nights around 20.6°C (mean 27.5°C) and higher rainfall (554 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 | 34.4°C | 21.2°C | 27.8°C | 365 mm | 82% | 0.3 m/s | 5 |
| 2024 | 35.6°C | 20.4°C | 28.0°C | 787 mm | 84% | 0.2 m/s | 3.7 |
| 2023 | 34.3°C | 21.5°C | 27.9°C | 769 mm | 81% | 0.3 m/s | 3.6 |
| 2022 | 34.3°C | 21.0°C | 27.6°C | 324 mm | 81% | 0.3 m/s | 5 |
| 2021 | 33.8°C | 21.8°C | 27.8°C | 299 mm | 83% | 0.2 m/s | 3.8 |
| 2020 🌧️ | 32.2°C | 21.4°C | 26.8°C | 1210 mm | 88% | 0.2 m/s | 2.9 |
| 2019 | 32.3°C | 20.6°C | 26.4°C | 942 mm | 87% | 0.2 m/s | 3.4 |
| 2018 | 34.9°C | 22.2°C | 28.5°C | 598 mm | 84% | 0.2 m/s | 3.9 |
| 2017 | 34.7°C | 21.3°C | 28.0°C | 573 mm | 83% | 0.3 m/s | 4.4 |
| 2016 | 35.1°C | 20.9°C | 28.0°C | 733 mm | 87% | 0.2 m/s | 3.7 |
| 2015 | 32.8°C | 21.3°C | 27.0°C | 346 mm | 83% | 0.3 m/s | 5 |
| 2014 | 33.4°C | 21.2°C | 27.3°C | 323 mm | 85% | 0.2 m/s | 4.3 |
| 2013 | 35.7°C | 21.0°C | 28.4°C | 498 mm | 87% | 0.2 m/s | 3.8 |
| 2012 | 33.7°C | 21.4°C | 27.5°C | 580 mm | 86% | 0.2 m/s | 3.8 |
| 2011 | 32.6°C | 20.7°C | 26.6°C | 658 mm | 84% | 0.2 m/s | 3.5 |
| 2010 | 33.0°C | 21.3°C | 27.1°C | 493 mm | 84% | 0.2 m/s | 3.9 |
| 2009 | 34.6°C | 21.5°C | 28.1°C | 440 mm | 81% | 0.3 m/s | 4 |
| 2008 | 35.7°C | 20.1°C | 27.9°C | 506 mm | 82% | 0.3 m/s | 4 |
| 2007 | 36.0°C | 20.5°C | 28.2°C | 627 mm | 83% | 0.2 m/s | 3.6 |
| 2006 | 34.5°C | 21.2°C | 27.8°C | 638 mm | 78% | 0.3 m/s | 4.5 |
| 2005 | 34.6°C | 20.4°C | 27.5°C | 427 mm | 79% | 0.2 m/s | 4.2 |
| 2004 | 33.0°C | 19.7°C | 26.3°C | 443 mm | 84% | 0.2 m/s | 3.5 |
| 2003 | 34.8°C | 19.8°C | 27.3°C | 762 mm | 83% | 0.2 m/s | 3.6 |
| 2002 | 35.9°C | 20.6°C | 28.3°C | 482 mm | 81% | 0.2 m/s | 3 |
| 2001 🔥 | 38.0°C | 21.5°C | 29.7°C | 362 mm | 78% | 0.3 m/s | 4.8 |
| 2000 | 33.6°C | 21.0°C | 27.3°C | 548 mm | 81% | 0.3 m/s | 4.4 |
| 1999 | 36.4°C | 20.3°C | 28.4°C | 275 mm | 79% | 0.3 m/s | 4.3 |
| 1998 | 32.6°C | 21.3°C | 27.0°C | 526 mm | 86% | 0.2 m/s | 4.8 |
| 1997 | 33.1°C | 20.3°C | 26.7°C | 501 mm | 81% | 0.3 m/s | 4.5 |
| 1996 | 36.1°C | 19.0°C | 27.5°C | 475 mm | 84% | 0.2 m/s | 4.1 |
| 1995 | 33.9°C | 19.5°C | 26.7°C | 430 mm | 83% | 0.2 m/s | 3.9 |
| 1994 | 35.9°C | 19.7°C | 27.8°C | 353 mm | 75% | 0.3 m/s | 4.5 |
| 1993 | 35.4°C | 19.7°C | 27.6°C | 571 mm | 80% | 0.3 m/s | 4.5 |
| 1992 | 33.8°C | 20.1°C | 26.9°C | 499 mm | 81% | 0.3 m/s | 3.6 |
| 1991 | 34.5°C | 20.7°C | 27.6°C | 578 mm | 83% | 0.2 m/s | 3.1 |
| 1990 | 33.9°C | 20.5°C | 27.2°C | 709 mm | 83% | 0.2 m/s | 3.2 |
| 1989 | 34.2°C | 18.9°C | 26.5°C | 534 mm | 82% | 0.3 m/s | 4.2 |
| 1988 | 34.1°C | 20.8°C | 27.4°C | 745 mm | 84% | 0.3 m/s | 3.5 |
| 1987 ❄️ | 32.8°C | 19.4°C | 26.1°C | 494 mm | 84% | 0.2 m/s | 3.1 |
| 1986 | 34.3°C | 19.1°C | 26.7°C | 483 mm | 81% | 0.3 m/s | 3.4 |
| 1985 | 33.8°C | 19.8°C | 26.8°C | 743 mm | 85% | 0.2 m/s | 3.2 |
| 1984 | 33.1°C | 20.4°C | 26.7°C | 689 mm | 86% | 0.3 m/s | 2.2 |
| 1983 | 34.6°C | 21.0°C | 27.8°C | 339 mm | 81% | 0.2 m/s | — |
| 1982 | 33.2°C | 20.0°C | 26.6°C | 441 mm | 83% | 0.2 m/s | — |
| 1981 | 34.1°C | 20.4°C | 27.3°C | 795 mm | 85% | 0.2 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 34.3°C with lows near 20.6°C (mean 27.5°C), based on 45 years of NASA POWER data.
July averages 554 mm of rainfall in West Siang, a relatively wet time of year. The wettest on record was 1210 mm in 2020.
The hottest July reached 38°C in 2001. The coldest dipped to 18.9°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.8°C. Daytime highs moved from 33.8°C to 34.5°C and overnight lows from 20.3°C to 21.2°C over the same span.
July is one of the warmer months of the year in West Siang and a relatively wet time of year, so plan for around 34.3°C daytime highs and 20.6°C at night.
Not quite — July is the 11th coolest month in West Siang, averaging 27.5°C.
For July in West Siang, pack light, breathable clothing and sun protection, with typical highs of 34.3°C and lows of 20.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 83% — quite humid.
Average wind speed in July is 0.2 m/s. The windiest July on record averaged 0.3 m/s (1984).
The wettest July on record was 2020 with 1210 mm. On average, July sees 554 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
