July is one of the cooler months of the year in Idukki, with average highs near 26.4°C and lows around 18.5°C (mean 22.5°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 July in Idukki was 2022 — when the month averaged 23.8°C — while the coldest was 1984 at 21.2°C. Typical July days reach 26.4°C with nights near 18.5°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 | 22.2°C | 22.1°C | 22.5°C | 22.6°C | 23.1°C | +0.9°C |
| Avg High | 26.3°C | 25.6°C | 26.3°C | 26.8°C | 27.1°C | +0.8°C |
| Avg Low | 18.0°C | 18.6°C | 18.7°C | 18.4°C | 19.1°C | +1.1°C |
| Avg Rain | 266 mm | 338 mm | 291 mm | 271 mm | 340 mm | +74 mm |
July temperatures in Idukki have risen by about 1.1°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 good time to visit Idukki
July is a good time to visit Idukki, with days averaging 26.4°C and nights around 18.5°C (mean 22.5°C, cooler than Idukki's yearly average) and higher rainfall. January and February are marginally more temperate, but July still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 26.3°C | 19.6°C | 23.0°C | 288 mm | 92% | 0.7 m/s | 4.5 |
| 2024 | 25.9°C | 19.2°C | 22.5°C | 359 mm | 92% | 0.5 m/s | 4.1 |
| 2023 | 27.1°C | 18.4°C | 22.8°C | 281 mm | 91% | 0.5 m/s | 4.6 |
| 2022 🔥 | 28.7°C | 18.9°C | 23.8°C | 410 mm | 92% | 0.5 m/s | 4.4 |
| 2021 | 26.7°C | 19.4°C | 23.0°C | 308 mm | 93% | 0.6 m/s | 4.5 |
| 2020 | 28.1°C | 19.2°C | 23.7°C | 395 mm | 92% | 0.5 m/s | 4.8 |
| 2019 | 27.3°C | 19.0°C | 23.2°C | 270 mm | 89% | 0.6 m/s | 4.8 |
| 2018 | 26.2°C | 17.5°C | 21.8°C | 435 mm | 93% | 0.6 m/s | 4.4 |
| 2017 | 26.7°C | 17.7°C | 22.2°C | 191 mm | 91% | 0.5 m/s | 5 |
| 2016 | 26.4°C | 18.8°C | 22.6°C | 312 mm | 91% | 0.6 m/s | 4.8 |
| 2015 | 27.5°C | 18.3°C | 22.9°C | 144 mm | 90% | 0.6 m/s | 5.4 |
| 2014 | 27.2°C | 18.4°C | 22.8°C | 286 mm | 91% | 0.6 m/s | 4.9 |
| 2013 | 25.1°C | 18.2°C | 21.7°C | 370 mm | 93% | 0.6 m/s | 4.1 |
| 2012 | 26.9°C | 19.5°C | 23.2°C | 145 mm | 90% | 0.6 m/s | 5.3 |
| 2011 | 26.6°C | 18.1°C | 22.4°C | 233 mm | 91% | 0.5 m/s | 4.5 |
| 2010 | 28.4°C | 18.6°C | 23.5°C | 328 mm | 92% | 0.6 m/s | 4.4 |
| 2009 | 26.3°C | 18.8°C | 22.5°C | 400 mm | 93% | 0.6 m/s | 4.6 |
| 2008 | 27.1°C | 19.3°C | 23.2°C | 296 mm | 91% | 0.6 m/s | 4.8 |
| 2007 | 25.4°C | 18.7°C | 22.0°C | 512 mm | 94% | 0.6 m/s | 4.4 |
| 2006 | 26.1°C | 18.8°C | 22.5°C | 310 mm | 93% | 0.6 m/s | 4.9 |
| 2005 | 25.5°C | 19.8°C | 22.6°C | 355 mm | 93% | 0.7 m/s | 4.6 |
| 2004 | 25.8°C | 18.4°C | 22.1°C | 242 mm | 92% | 0.6 m/s | 4.6 |
| 2003 | 26.6°C | 19.0°C | 22.8°C | 277 mm | 93% | 0.5 m/s | 4.7 |
| 2002 | 26.9°C | 18.2°C | 22.5°C | 147 mm | 89% | 0.7 m/s | 5.1 |
| 2001 | 25.8°C | 18.7°C | 22.3°C | 289 mm | 92% | 0.6 m/s | 4.9 |
| 2000 | 27.8°C | 17.2°C | 22.5°C | 86 mm | 88% | 0.6 m/s | 5.2 |
| 1999 | 25.9°C | 18.3°C | 22.1°C | 193 mm | 92% | 0.7 m/s | 4.8 |
| 1998 | 26.0°C | 19.0°C | 22.5°C | 192 mm | 92% | 0.6 m/s | 4.8 |
| 1997 🌧️ | 25.1°C | 18.9°C | 22.0°C | 528 mm | 93% | 0.7 m/s | 4.1 |
| 1996 | 27.4°C | 19.0°C | 23.2°C | 421 mm | 93% | 0.7 m/s | 3.8 |
| 1995 | 26.1°C | 18.5°C | 22.3°C | 300 mm | 93% | 0.6 m/s | 3.9 |
| 1994 | 24.9°C | 18.5°C | 21.7°C | 417 mm | 92% | 0.7 m/s | 4 |
| 1993 | 24.9°C | 18.3°C | 21.6°C | 366 mm | 92% | 0.7 m/s | 4.1 |
| 1992 | 25.4°C | 18.6°C | 22.0°C | 291 mm | 93% | 0.7 m/s | 4.3 |
| 1991 | 25.0°C | 18.8°C | 21.9°C | 302 mm | 93% | 0.6 m/s | 3.8 |
| 1990 | 25.6°C | 18.5°C | 22.0°C | 372 mm | 91% | 0.6 m/s | 4.4 |
| 1989 | 26.3°C | 17.8°C | 22.0°C | 299 mm | 92% | 0.7 m/s | 4.5 |
| 1988 | 26.1°C | 18.6°C | 22.4°C | 374 mm | 93% | 0.6 m/s | 4.1 |
| 1987 | 28.4°C | 18.9°C | 23.7°C | 84 mm | 88% | 0.6 m/s | 5.3 |
| 1986 | 26.0°C | 17.9°C | 21.9°C | 102 mm | 89% | 0.6 m/s | 4.7 |
| 1985 | 24.7°C | 18.1°C | 21.4°C | 194 mm | 92% | 0.5 m/s | 4.7 |
| 1984 ❄️ | 24.8°C | 17.6°C | 21.2°C | 370 mm | 91% | 0.6 m/s | 4.7 |
| 1983 | 28.9°C | 17.1°C | 23.0°C | 194 mm | 87% | 0.6 m/s | — |
| 1982 | 25.8°C | 17.5°C | 21.7°C | 411 mm | 92% | 0.5 m/s | — |
| 1981 | 25.4°C | 18.9°C | 22.2°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 26.4°C with lows near 18.5°C (mean 22.5°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 1.1°C. Daytime highs moved from 25.9°C to 26.9°C and overnight lows from 17.8°C to 19.1°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 26.4°C daytime highs and 18.5°C at night.
Not quite — July is the 4th coolest month in Idukki, averaging 22.5°C.
For July in Idukki, pack light layers you can adjust through the day, with typical highs of 26.4°C and lows of 18.5°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.
