June is close to Idukki's year-round average, with average highs near 25.4°C and lows around 20.7°C (mean 23°C). It is a relatively wet time of year, averaging 359 mm of rainfall and 90% relative humidity across the period.
June is close to Idukki's year-round average. Across 45 years of records, the warmest June in Idukki was 2019 — when the month averaged 24.4°C — while the coldest was 1985 at 21.6°C. Typical June days reach 25.4°C with nights near 20.7°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Idukki, averaging 359 mm of rainfall. The wettest June on record was 1991 with 975 mm, while the driest was 1990 at 178 mm.
Relative humidity in Idukki during June averages 90%. The most humid June was 1991 at 93%, and the least humid was 1983 at 84%.
June receives about 4.9 kWh/m²/day of solar energy in Idukki. The sunniest Junes were 2006, 2009 and 2014, among others at 5.5 kWh/m²/day, and the cloudiest was 2013 at 4.
Average wind speed in Idukki during June is 0.6 m/s. The windiest June was 2000 at 0.8 m/s, while the calmest was 2022 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.5°C | 23.1°C | 23.0°C | 23.3°C | 23.5°C | +1°C |
| Avg High | 24.8°C | 25.4°C | 25.3°C | 25.7°C | 26.1°C | +1.3°C |
| Avg Low | 20.2°C | 20.7°C | 20.8°C | 20.9°C | 21.0°C | +0.8°C |
| Avg Rain | 423 mm | 419 mm | 351 mm | 310 mm | 262 mm | -161 mm |
June temperatures in Idukki have risen by about 1.2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 17.4°C (1984) to a record high of 32.1°C (1997).
Rainfall in June is a relatively wet time of year, averaging 359 mm, with a wettest year of 975 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, June — with days averaging 25.4°C and nights around 20.7°C (mean 23°C) and higher rainfall (359 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 | 25.8°C | 23.7°C | 21.6°C | 28.4°C | 18.9°C | 340 mm | 91% | 0.6 m/s | 4.7 |
| 2024 | 25.9°C | 23.4°C | 21.0°C | 27.5°C | 19.7°C | 271 mm | 91% | 0.5 m/s | 4.6 |
| 2023 | 27.3°C | 24.2°C | 21.2°C | 30.8°C | 18.1°C | 203 mm | 87% | 0.5 m/s | 5.3 |
| 2022 | 25.8°C | 23.0°C | 20.3°C | 28.3°C | 18.0°C | 245 mm | 90% | 0.4 m/s | 5.1 |
| 2021 | 25.8°C | 23.4°C | 21.0°C | 28.6°C | 19.3°C | 250 mm | 91% | 0.5 m/s | 5.3 |
| 2020 | 25.9°C | 23.4°C | 21.0°C | 27.7°C | 19.4°C | 262 mm | 89% | 0.5 m/s | 5.1 |
| 2019 🔥 | 27.3°C | 24.4°C | 21.6°C | 31.6°C | 19.1°C | 216 mm | 87% | 0.6 m/s | 5.3 |
| 2018 | 25.1°C | 23.0°C | 20.8°C | 27.1°C | 17.9°C | 326 mm | 91% | 0.6 m/s | 4.6 |
| 2017 | 25.4°C | 23.3°C | 21.1°C | 27.0°C | 20.3°C | 312 mm | 91% | 0.6 m/s | 4.8 |
| 2016 | 25.4°C | 23.1°C | 20.9°C | 27.0°C | 19.1°C | 284 mm | 90% | 0.6 m/s | 4.4 |
| 2015 | 26.0°C | 23.4°C | 20.8°C | 28.3°C | 19.0°C | 279 mm | 90% | 0.5 m/s | 5.2 |
| 2014 | 26.4°C | 24.0°C | 21.5°C | 27.6°C | 20.2°C | 198 mm | 89% | 0.6 m/s | 5.5 |
| 2013 | 24.5°C | 22.5°C | 20.6°C | 26.1°C | 19.6°C | 580 mm | 91% | 0.7 m/s | 4 |
| 2012 | 25.6°C | 23.0°C | 20.5°C | 27.9°C | 18.5°C | 192 mm | 89% | 0.6 m/s | 5.1 |
| 2011 | 25.4°C | 22.9°C | 20.5°C | 26.8°C | 18.0°C | 323 mm | 90% | 0.6 m/s | 5.1 |
| 2010 | 25.6°C | 23.1°C | 20.7°C | 29.3°C | 18.1°C | 391 mm | 91% | 0.6 m/s | 5 |
| 2009 | 25.3°C | 22.9°C | 20.4°C | 27.3°C | 19.4°C | 348 mm | 90% | 0.6 m/s | 5.5 |
| 2008 | 25.3°C | 23.0°C | 20.7°C | 26.7°C | 19.3°C | 221 mm | 90% | 0.6 m/s | 5.3 |
| 2007 | 25.9°C | 23.5°C | 21.1°C | 30.5°C | 19.9°C | 395 mm | 90% | 0.6 m/s | 4.8 |
| 2006 | 25.7°C | 23.1°C | 20.5°C | 29.0°C | 18.9°C | 380 mm | 90% | 0.5 m/s | 5.5 |
| 2005 | 25.6°C | 23.5°C | 21.4°C | 27.7°C | 20.4°C | 438 mm | 91% | 0.6 m/s | 5 |
| 2004 | 24.5°C | 22.5°C | 20.6°C | 26.1°C | 19.6°C | 317 mm | 92% | 0.6 m/s | 5.1 |
| 2003 | 25.8°C | 23.3°C | 20.9°C | 29.0°C | 18.6°C | 346 mm | 89% | 0.5 m/s | 5.5 |
| 2002 | 25.7°C | 23.4°C | 21.1°C | 27.8°C | 20.3°C | 293 mm | 90% | 0.6 m/s | 5.3 |
| 2001 | 24.6°C | 22.6°C | 20.7°C | 26.0°C | 19.1°C | 494 mm | 92% | 0.7 m/s | 4.5 |
| 2000 | 24.8°C | 22.6°C | 20.4°C | 26.2°C | 18.8°C | 278 mm | 89% | 0.8 m/s | 4.7 |
| 1999 | 25.0°C | 22.7°C | 20.4°C | 27.0°C | 19.2°C | 344 mm | 91% | 0.6 m/s | 5.3 |
| 1998 | 26.1°C | 23.6°C | 21.1°C | 29.6°C | 19.9°C | 337 mm | 88% | 0.7 m/s | 4.3 |
| 1997 | 27.4°C | 24.1°C | 20.8°C | 32.1°C | 19.7°C | 437 mm | 85% | 0.6 m/s | 4.8 |
| 1996 | 26.1°C | 23.5°C | 20.8°C | 30.2°C | 19.5°C | 365 mm | 87% | 0.7 m/s | 4.2 |
| 1995 | 25.1°C | 22.9°C | 20.7°C | 28.7°C | 19.2°C | 327 mm | 91% | 0.6 m/s | 4.4 |
| 1994 | 24.4°C | 22.4°C | 20.4°C | 26.1°C | 18.6°C | 341 mm | 91% | 0.7 m/s | 4.5 |
| 1993 | 24.9°C | 22.8°C | 20.7°C | 26.6°C | 19.3°C | 421 mm | 91% | 0.6 m/s | 4.6 |
| 1992 | 25.1°C | 23.0°C | 20.8°C | 28.3°C | 19.9°C | 465 mm | 90% | 0.7 m/s | 4.6 |
| 1991 🌧️ | 24.6°C | 22.8°C | 21.0°C | 30.3°C | 19.6°C | 975 mm | 93% | 0.7 m/s | 4.2 |
| 1990 | 25.3°C | 22.9°C | 20.5°C | 26.4°C | 19.5°C | 178 mm | 89% | 0.7 m/s | 4.8 |
| 1989 | 24.1°C | 22.0°C | 19.9°C | 27.2°C | 17.4°C | 452 mm | 91% | 0.6 m/s | 4.4 |
| 1988 | 25.2°C | 22.8°C | 20.5°C | 28.8°C | 18.7°C | 393 mm | 90% | 0.6 m/s | 5 |
| 1987 | 25.4°C | 22.9°C | 20.5°C | 29.1°C | 18.4°C | 279 mm | 87% | 0.7 m/s | 4.6 |
| 1986 | 25.6°C | 22.9°C | 20.1°C | 29.7°C | 19.2°C | 252 mm | 86% | 0.6 m/s | 4.8 |
| 1985 ❄️ | 23.6°C | 21.6°C | 19.7°C | 25.2°C | 18.2°C | 533 mm | 92% | 0.6 m/s | 4.6 |
| 1984 | 24.0°C | 21.9°C | 19.8°C | 25.6°C | 17.4°C | 299 mm | 90% | 0.6 m/s | 4.8 |
| 1983 | 26.9°C | 24.0°C | 21.1°C | 31.1°C | 19.4°C | 241 mm | 84% | 0.6 m/s | — |
| 1982 | 24.3°C | 22.2°C | 20.1°C | 26.2°C | 19.0°C | 650 mm | 91% | 0.6 m/s | — |
| 1981 | 24.0°C | 22.0°C | 20.0°C | 26.1°C | 17.8°C | 704 mm | 92% | 0.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 25.4°C with lows near 20.7°C (mean 23°C), based on 45 years of NASA POWER data.
June averages 359 mm of rainfall in Idukki, a relatively wet time of year. The wettest on record was 975 mm in 1991.
The hottest June reached 32.1°C in 1997. The coldest dipped to 17.4°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.2°C. Daytime highs moved from 24.6°C to 26.1°C and overnight lows from 20.1°C to 21°C over the same span.
June is close to Idukki's year-round average and a relatively wet time of year, so plan for around 25.4°C daytime highs and 20.7°C at night.
Not quite — June is the 8th coolest month in Idukki, averaging 23°C.
For June in Idukki, pack light layers you can adjust through the day, with typical highs of 25.4°C and lows of 20.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 90% — quite humid.
Average wind speed in June is 0.6 m/s. The windiest June on record averaged 0.8 m/s (2000).
The wettest June on record was 1991 with 975 mm. On average, June sees 359 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 June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
