July is one of the warmer months of the year in West Siang, with average highs near 29.9°C and lows around 22.4°C (mean 26.2°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 27.5°C — while the coldest was 1985 at 24.6°C. Typical July days reach 29.9°C with nights near 22.4°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in West Siang, averaging 554 mm of rainfall. The wettest July on record was 2020 with 1210 mm, while the driest was 1999 at 275 mm.
Relative humidity in West Siang during July averages 83%. The most humid July was 2020 at 88%, and the least humid was 1994 at 75%.
July receives about 3.9 kWh/m²/day of solar energy in West Siang. The sunniest Julys were 2015, 2022 and 2025 at 5 kWh/m²/day, and the cloudiest was 1984 at 2.2.
Average wind speed in West Siang during July is 0.2 m/s. The windiest Julys were 2022, 2023 and 2025, among others at 0.3 m/s, while the calmest were 2020, 2021 and 2024, 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 | 25.6°C | 26.1°C | 26.5°C | 26.1°C | 26.6°C | +1°C |
| Avg High | 29.3°C | 30.1°C | 30.5°C | 29.5°C | 30.3°C | +1°C |
| Avg Low | 21.9°C | 22.1°C | 22.5°C | 22.7°C | 23.0°C | +1.1°C |
| Avg Rain | 585 mm | 492 mm | 523 mm | 574 mm | 626 mm | +41 mm |
July temperatures in West Siang have risen by about 1.4°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.
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 29.9°C and nights around 22.4°C (mean 26.2°C) and higher rainfall (554 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 | 31.0°C | 27.2°C | 23.4°C | 34.4°C | 21.2°C | 365 mm | 82% | 0.3 m/s | 5 |
| 2024 | 30.0°C | 26.4°C | 22.8°C | 35.6°C | 20.4°C | 787 mm | 84% | 0.2 m/s | 3.7 |
| 2023 | 30.7°C | 26.8°C | 22.9°C | 34.3°C | 21.5°C | 769 mm | 81% | 0.3 m/s | 3.6 |
| 2022 | 31.2°C | 27.1°C | 23.0°C | 34.3°C | 21.0°C | 324 mm | 81% | 0.3 m/s | 5 |
| 2021 | 30.3°C | 26.6°C | 22.9°C | 33.8°C | 21.8°C | 299 mm | 83% | 0.2 m/s | 3.8 |
| 2020 🌧️ | 28.6°C | 25.6°C | 22.7°C | 32.2°C | 21.4°C | 1210 mm | 88% | 0.2 m/s | 2.9 |
| 2019 | 28.6°C | 25.5°C | 22.5°C | 32.3°C | 20.6°C | 942 mm | 87% | 0.2 m/s | 3.4 |
| 2018 | 30.0°C | 26.6°C | 23.2°C | 34.9°C | 22.2°C | 598 mm | 84% | 0.2 m/s | 3.9 |
| 2017 | 29.9°C | 26.3°C | 22.8°C | 34.7°C | 21.3°C | 573 mm | 83% | 0.3 m/s | 4.4 |
| 2016 | 29.1°C | 25.8°C | 22.6°C | 35.1°C | 20.9°C | 733 mm | 87% | 0.2 m/s | 3.7 |
| 2015 | 30.1°C | 26.4°C | 22.6°C | 32.8°C | 21.3°C | 346 mm | 83% | 0.3 m/s | 5 |
| 2014 | 30.2°C | 26.7°C | 23.1°C | 33.4°C | 21.2°C | 323 mm | 85% | 0.2 m/s | 4.3 |
| 2013 | 29.3°C | 26.2°C | 23.1°C | 35.7°C | 21.0°C | 498 mm | 87% | 0.2 m/s | 3.8 |
| 2012 | 29.4°C | 26.1°C | 22.9°C | 33.7°C | 21.4°C | 580 mm | 86% | 0.2 m/s | 3.8 |
| 2011 | 29.0°C | 25.5°C | 22.1°C | 32.6°C | 20.7°C | 658 mm | 84% | 0.2 m/s | 3.5 |
| 2010 | 29.7°C | 26.1°C | 22.5°C | 33.0°C | 21.3°C | 493 mm | 84% | 0.2 m/s | 3.9 |
| 2009 | 30.8°C | 26.8°C | 22.8°C | 34.6°C | 21.5°C | 440 mm | 81% | 0.3 m/s | 4 |
| 2008 | 30.1°C | 26.1°C | 22.2°C | 35.7°C | 20.1°C | 506 mm | 82% | 0.3 m/s | 4 |
| 2007 | 30.0°C | 26.2°C | 22.4°C | 36.0°C | 20.5°C | 627 mm | 83% | 0.2 m/s | 3.6 |
| 2006 | 31.7°C | 27.4°C | 23.1°C | 34.5°C | 21.2°C | 638 mm | 78% | 0.3 m/s | 4.5 |
| 2005 | 30.9°C | 26.8°C | 22.8°C | 34.6°C | 20.4°C | 427 mm | 79% | 0.2 m/s | 4.2 |
| 2004 | 28.8°C | 25.2°C | 21.6°C | 33.0°C | 19.7°C | 443 mm | 84% | 0.2 m/s | 3.5 |
| 2003 | 29.8°C | 25.9°C | 22.0°C | 34.8°C | 19.8°C | 762 mm | 83% | 0.2 m/s | 3.6 |
| 2002 | 30.2°C | 26.4°C | 22.6°C | 35.9°C | 20.6°C | 482 mm | 81% | 0.2 m/s | 3 |
| 2001 🔥 | 31.9°C | 27.5°C | 23.1°C | 38.0°C | 21.5°C | 362 mm | 78% | 0.3 m/s | 4.8 |
| 2000 | 30.7°C | 26.7°C | 22.6°C | 33.6°C | 21.0°C | 548 mm | 81% | 0.3 m/s | 4.4 |
| 1999 | 30.8°C | 26.5°C | 22.2°C | 36.4°C | 20.3°C | 275 mm | 79% | 0.3 m/s | 4.3 |
| 1998 | 29.5°C | 25.9°C | 22.4°C | 32.6°C | 21.3°C | 526 mm | 86% | 0.2 m/s | 4.8 |
| 1997 | 30.2°C | 26.2°C | 22.1°C | 33.1°C | 20.3°C | 501 mm | 81% | 0.3 m/s | 4.5 |
| 1996 | 29.2°C | 25.5°C | 21.8°C | 36.1°C | 19.0°C | 475 mm | 84% | 0.2 m/s | 4.1 |
| 1995 | 29.5°C | 25.6°C | 21.6°C | 33.9°C | 19.5°C | 430 mm | 83% | 0.2 m/s | 3.9 |
| 1994 | 32.2°C | 27.4°C | 22.6°C | 35.9°C | 19.7°C | 353 mm | 75% | 0.3 m/s | 4.5 |
| 1993 | 30.0°C | 26.0°C | 21.9°C | 35.4°C | 19.7°C | 571 mm | 80% | 0.3 m/s | 4.5 |
| 1992 | 29.8°C | 25.6°C | 21.5°C | 33.8°C | 20.1°C | 499 mm | 81% | 0.3 m/s | 3.6 |
| 1991 | 29.8°C | 26.0°C | 22.3°C | 34.5°C | 20.7°C | 578 mm | 83% | 0.2 m/s | 3.1 |
| 1990 | 29.5°C | 25.8°C | 22.2°C | 33.9°C | 20.5°C | 709 mm | 83% | 0.2 m/s | 3.2 |
| 1989 | 29.5°C | 25.7°C | 21.8°C | 34.2°C | 18.9°C | 534 mm | 82% | 0.3 m/s | 4.2 |
| 1988 | 29.7°C | 26.0°C | 22.4°C | 34.1°C | 20.8°C | 745 mm | 84% | 0.3 m/s | 3.5 |
| 1987 | 29.2°C | 25.5°C | 21.8°C | 32.8°C | 19.4°C | 494 mm | 84% | 0.2 m/s | 3.1 |
| 1986 | 30.3°C | 26.2°C | 22.0°C | 34.3°C | 19.1°C | 483 mm | 81% | 0.3 m/s | 3.4 |
| 1985 ❄️ | 28.1°C | 24.6°C | 21.1°C | 33.8°C | 19.8°C | 743 mm | 85% | 0.2 m/s | 3.2 |
| 1984 | 28.1°C | 24.8°C | 21.5°C | 33.1°C | 20.4°C | 689 mm | 86% | 0.3 m/s | 2.2 |
| 1983 | 30.6°C | 26.6°C | 22.5°C | 34.6°C | 21.0°C | 339 mm | 81% | 0.2 m/s | — |
| 1982 | 29.0°C | 25.3°C | 21.6°C | 33.2°C | 20.0°C | 441 mm | 83% | 0.2 m/s | — |
| 1981 | 29.4°C | 25.9°C | 22.3°C | 34.1°C | 20.4°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 29.9°C with lows near 22.4°C (mean 26.2°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 1.4°C. Daytime highs moved from 29°C to 30.6°C and overnight lows from 21.8°C to 23°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 29.9°C daytime highs and 22.4°C at night.
Not quite — July is the 11th coolest month in West Siang, averaging 26.2°C.
For July in West Siang, pack light layers you can adjust through the day, with typical highs of 29.9°C and lows of 22.4°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.
