July is one of the cooler months of the year in Idukki, with average highs near 24.4°C and lows around 20.1°C (mean 22.3°C). It is a relatively wet time of year, averaging 299 mm of rainfall and 92% relative humidity across the period.
July is one of the cooler months of the year in Idukki. Across 45 years of records, the warmest Julys in Idukki were 2002 and 2019 — when the month averaged 23.2°C — while the coldest was 1985 at 20.9°C. Typical July days reach 24.4°C with nights near 20.1°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Idukki, averaging 299 mm of rainfall. The wettest July on record was 1997 with 528 mm, while the driest was 1987 at 84 mm.
Relative humidity in Idukki during July averages 92%. The most humid July was 2007 at 94%, and the least humid was 1983 at 87%.
July receives about 4.6 kWh/m²/day of solar energy in Idukki. The sunniest July was 2015 at 5.4 kWh/m²/day, and the cloudiest were 1991 and 1996 at 3.8.
Average wind speed in Idukki during July is 0.6 m/s. The windiest Julys were 2002, 2005 and 2025, among others at 0.7 m/s, while the calmest were 2022, 2023 and 2024, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.9°C | 21.9°C | 22.4°C | 22.5°C | 22.6°C | +0.7°C |
| Avg High | 24.2°C | 23.8°C | 24.5°C | 24.8°C | 24.8°C | +0.6°C |
| Avg Low | 19.6°C | 19.9°C | 20.2°C | 20.2°C | 20.4°C | +0.8°C |
| Avg Rain | 266 mm | 338 mm | 291 mm | 271 mm | 340 mm | +74 mm |
July temperatures in Idukki have risen by about 0.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 17.1°C (1983) to a record high of 28.9°C (1983).
Rainfall in July is a relatively wet time of year, averaging 299 mm, with a wettest year of 528 mm.
A quieter season to visit Idukki
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Idukki. That said, July — with days averaging 24.4°C and nights around 20.1°C (mean 22.3°C) and higher rainfall (299 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 24.8°C | 22.8°C | 20.9°C | 26.3°C | 19.6°C | 288 mm | 92% | 0.7 m/s | 4.5 |
| 2024 | 24.6°C | 22.6°C | 20.6°C | 25.9°C | 19.2°C | 359 mm | 92% | 0.5 m/s | 4.1 |
| 2023 | 25.4°C | 22.8°C | 20.2°C | 27.1°C | 18.4°C | 281 mm | 91% | 0.5 m/s | 4.6 |
| 2022 | 24.4°C | 22.2°C | 20.0°C | 28.7°C | 18.9°C | 410 mm | 92% | 0.5 m/s | 4.4 |
| 2021 | 24.7°C | 22.6°C | 20.5°C | 26.7°C | 19.4°C | 308 mm | 93% | 0.6 m/s | 4.5 |
| 2020 | 25.1°C | 22.7°C | 20.3°C | 28.1°C | 19.2°C | 395 mm | 92% | 0.5 m/s | 4.8 |
| 2019 | 25.7°C | 23.2°C | 20.6°C | 27.3°C | 19.0°C | 270 mm | 89% | 0.6 m/s | 4.8 |
| 2018 | 24.2°C | 22.3°C | 20.5°C | 26.2°C | 17.5°C | 435 mm | 93% | 0.6 m/s | 4.4 |
| 2017 | 25.1°C | 22.7°C | 20.3°C | 26.7°C | 17.7°C | 191 mm | 91% | 0.5 m/s | 5 |
| 2016 | 24.8°C | 22.5°C | 20.2°C | 26.4°C | 18.8°C | 312 mm | 91% | 0.6 m/s | 4.8 |
| 2015 | 25.7°C | 23.1°C | 20.6°C | 27.5°C | 18.3°C | 144 mm | 90% | 0.6 m/s | 5.4 |
| 2014 | 24.8°C | 22.6°C | 20.5°C | 27.2°C | 18.4°C | 286 mm | 91% | 0.6 m/s | 4.9 |
| 2013 | 23.4°C | 21.6°C | 19.7°C | 25.1°C | 18.2°C | 370 mm | 93% | 0.6 m/s | 4.1 |
| 2012 | 25.4°C | 23.0°C | 20.6°C | 26.9°C | 19.5°C | 145 mm | 90% | 0.6 m/s | 5.3 |
| 2011 | 24.2°C | 21.8°C | 19.3°C | 26.6°C | 18.1°C | 233 mm | 91% | 0.5 m/s | 4.5 |
| 2010 | 24.3°C | 22.0°C | 19.8°C | 28.4°C | 18.6°C | 328 mm | 92% | 0.6 m/s | 4.4 |
| 2009 | 24.2°C | 22.1°C | 20.0°C | 26.3°C | 18.8°C | 400 mm | 93% | 0.6 m/s | 4.6 |
| 2008 | 24.7°C | 22.4°C | 20.1°C | 27.1°C | 19.3°C | 296 mm | 91% | 0.6 m/s | 4.8 |
| 2007 | 24.0°C | 22.3°C | 20.6°C | 25.4°C | 18.7°C | 512 mm | 94% | 0.6 m/s | 4.4 |
| 2006 | 24.3°C | 22.4°C | 20.5°C | 26.1°C | 18.8°C | 310 mm | 93% | 0.6 m/s | 4.9 |
| 2005 | 24.2°C | 22.5°C | 20.7°C | 25.5°C | 19.8°C | 355 mm | 93% | 0.7 m/s | 4.6 |
| 2004 | 24.1°C | 22.0°C | 19.9°C | 25.8°C | 18.4°C | 242 mm | 92% | 0.6 m/s | 4.6 |
| 2003 | 24.5°C | 22.4°C | 20.3°C | 26.6°C | 19.0°C | 277 mm | 93% | 0.5 m/s | 4.7 |
| 2002 🔥 | 25.8°C | 23.2°C | 20.6°C | 26.9°C | 18.2°C | 147 mm | 89% | 0.7 m/s | 5.1 |
| 2001 | 24.1°C | 22.0°C | 19.9°C | 25.8°C | 18.7°C | 289 mm | 92% | 0.6 m/s | 4.9 |
| 2000 | 25.1°C | 22.4°C | 19.7°C | 27.8°C | 17.2°C | 86 mm | 88% | 0.6 m/s | 5.2 |
| 1999 | 23.6°C | 21.7°C | 19.7°C | 25.9°C | 18.3°C | 193 mm | 92% | 0.7 m/s | 4.8 |
| 1998 | 24.5°C | 22.4°C | 20.3°C | 26.0°C | 19.0°C | 192 mm | 92% | 0.6 m/s | 4.8 |
| 1997 🌧️ | 23.9°C | 22.1°C | 20.3°C | 25.1°C | 18.9°C | 528 mm | 93% | 0.7 m/s | 4.1 |
| 1996 | 23.6°C | 21.9°C | 20.1°C | 27.4°C | 19.0°C | 421 mm | 93% | 0.7 m/s | 3.8 |
| 1995 | 23.9°C | 21.8°C | 19.7°C | 26.1°C | 18.5°C | 300 mm | 93% | 0.6 m/s | 3.9 |
| 1994 | 23.6°C | 21.6°C | 19.7°C | 24.9°C | 18.5°C | 417 mm | 92% | 0.7 m/s | 4 |
| 1993 | 23.6°C | 21.8°C | 19.9°C | 24.9°C | 18.3°C | 366 mm | 92% | 0.7 m/s | 4.1 |
| 1992 | 23.4°C | 21.6°C | 19.7°C | 25.4°C | 18.6°C | 291 mm | 93% | 0.7 m/s | 4.3 |
| 1991 | 23.8°C | 21.9°C | 19.9°C | 25.0°C | 18.8°C | 302 mm | 93% | 0.6 m/s | 3.8 |
| 1990 | 24.0°C | 21.8°C | 19.5°C | 25.6°C | 18.5°C | 372 mm | 91% | 0.6 m/s | 4.4 |
| 1989 | 23.7°C | 21.6°C | 19.5°C | 26.3°C | 17.8°C | 299 mm | 92% | 0.7 m/s | 4.5 |
| 1988 | 24.0°C | 22.0°C | 20.0°C | 26.1°C | 18.6°C | 374 mm | 93% | 0.6 m/s | 4.1 |
| 1987 | 26.0°C | 23.1°C | 20.3°C | 28.4°C | 18.9°C | 84 mm | 88% | 0.6 m/s | 5.3 |
| 1986 | 24.6°C | 22.2°C | 19.8°C | 26.0°C | 17.9°C | 102 mm | 89% | 0.6 m/s | 4.7 |
| 1985 ❄️ | 22.9°C | 20.9°C | 18.9°C | 24.7°C | 18.1°C | 194 mm | 92% | 0.5 m/s | 4.7 |
| 1984 | 23.7°C | 21.4°C | 19.2°C | 24.8°C | 17.6°C | 370 mm | 91% | 0.6 m/s | 4.7 |
| 1983 | 25.3°C | 22.5°C | 19.7°C | 28.9°C | 17.1°C | 194 mm | 87% | 0.6 m/s | — |
| 1982 | 23.7°C | 21.5°C | 19.3°C | 25.8°C | 17.5°C | 411 mm | 92% | 0.5 m/s | — |
| 1981 | 23.9°C | 22.0°C | 20.1°C | 25.4°C | 18.9°C | 363 mm | 93% | 0.6 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 24.4°C with lows near 20.1°C (mean 22.3°C), based on 45 years of NASA POWER data.
July averages 299 mm of rainfall in Idukki, a relatively wet time of year. The wettest on record was 528 mm in 1997.
The hottest July reached 28.9°C in 1983. The coldest dipped to 17.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.9°C. Daytime highs moved from 23.9°C to 24.8°C and overnight lows from 19.4°C to 20.4°C over the same span.
July is one of the cooler months of the year in Idukki and a relatively wet time of year, so plan for around 24.4°C daytime highs and 20.1°C at night.
Not quite — July is the 3rd coolest month in Idukki, averaging 22.3°C.
For July in Idukki, pack light layers you can adjust through the day, with typical highs of 24.4°C and lows of 20.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 92% — quite humid.
Average wind speed in July is 0.6 m/s. The windiest July on record averaged 0.7 m/s (1989).
The wettest July on record was 1997 with 528 mm. On average, July sees 299 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 Idukki 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.
