April is one of the warmer months of the year in Idukki, with average highs near 35.7°C and lows around 19.9°C (mean 27.8°C). It is one of the drier months, averaging 100 mm of rainfall and 73% relative humidity across the period.
April is one of the warmer months of the year in Idukki. Across 45 years of records, the warmest April in Idukki was 1983 — when the month averaged 29.7°C — while the coldest was 2008 at 24.9°C. Typical April days reach 35.7°C with nights near 19.9°C. The long-term April temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.9°C | 27.9°C | 27.5°C | 27.9°C | 27.6°C | -0.3°C |
| Avg High | 35.7°C | 36.2°C | 35.4°C | 35.7°C | 35.2°C | -0.5°C |
| Avg Low | 20.0°C | 19.7°C | 19.6°C | 20.1°C | 20.0°C | 0°C |
| Avg Rain | 105 mm | 67 mm | 115 mm | 94 mm | 132 mm | +28 mm |
April temperatures in Idukki have stayed relatively stable across the record.
April has ranged from a record low of 17.1°C (1994) to a record high of 38°C (1983).
Rainfall in April is one of the drier months, averaging 100 mm, with a wettest year of 249 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A quieter season to visit Idukki
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Idukki. That said, April — with days averaging 35.7°C and nights around 19.9°C (mean 27.8°C) and higher rainfall (100 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 | 32.1°C | 20.8°C | 26.5°C | 186 mm | 84% | 0.3 m/s | 5.6 |
| 2024 | 38.0°C | 20.7°C | 29.3°C | 45 mm | 67% | 0.4 m/s | 6.3 |
| 2023 | 36.0°C | 19.4°C | 27.7°C | 135 mm | 70% | 0.3 m/s | 6.1 |
| 2022 🌧️ | 33.8°C | 19.2°C | 26.5°C | 249 mm | 82% | 0.3 m/s | 5.6 |
| 2021 | 34.6°C | 20.2°C | 27.4°C | 110 mm | 78% | 0.3 m/s | 5.7 |
| 2020 | 36.4°C | 19.8°C | 28.1°C | 70 mm | 69% | 0.3 m/s | 6.2 |
| 2019 | 37.8°C | 21.4°C | 29.6°C | 108 mm | 66% | 0.4 m/s | 6.3 |
| 2018 | 35.0°C | 20.2°C | 27.6°C | 89 mm | 75% | 0.3 m/s | 6.1 |
| 2017 | 35.9°C | 21.4°C | 28.6°C | 37 mm | 72% | 0.4 m/s | 6.3 |
| 2016 | 36.3°C | 21.4°C | 28.8°C | 55 mm | 72% | 0.4 m/s | 6.4 |
| 2015 | 33.4°C | 18.7°C | 26.0°C | 134 mm | 76% | 0.3 m/s | 5.9 |
| 2014 | 36.8°C | 20.7°C | 28.7°C | 85 mm | 70% | 0.4 m/s | 6.2 |
| 2013 | 37.0°C | 19.5°C | 28.2°C | 21 mm | 70% | 0.5 m/s | 6.2 |
| 2012 | 35.1°C | 19.5°C | 27.3°C | 192 mm | 76% | 0.4 m/s | 5.9 |
| 2011 | 34.6°C | 18.0°C | 26.3°C | 105 mm | 76% | 0.4 m/s | 5.9 |
| 2010 | 34.9°C | 20.0°C | 27.5°C | 114 mm | 75% | 0.3 m/s | 6 |
| 2009 | 36.0°C | 19.6°C | 27.8°C | 106 mm | 73% | 0.4 m/s | 6 |
| 2008 ❄️ | 32.0°C | 17.8°C | 24.9°C | 110 mm | 82% | 0.3 m/s | 6.1 |
| 2007 | 36.8°C | 20.4°C | 28.6°C | 115 mm | 71% | 0.3 m/s | 6.1 |
| 2006 | 35.7°C | 20.4°C | 28.0°C | 46 mm | 71% | 0.4 m/s | 6.2 |
| 2005 | 34.5°C | 18.7°C | 26.6°C | 234 mm | 85% | 0.3 m/s | 5.5 |
| 2004 | 36.7°C | 19.8°C | 28.2°C | 76 mm | 73% | 0.4 m/s | 6.1 |
| 2003 | 34.6°C | 18.5°C | 26.6°C | 111 mm | 75% | 0.3 m/s | 6.1 |
| 2002 | 36.7°C | 20.6°C | 28.6°C | 68 mm | 69% | 0.4 m/s | 6.3 |
| 2001 | 36.4°C | 19.7°C | 28.1°C | 246 mm | 79% | 0.3 m/s | 5.5 |
| 2000 | 35.0°C | 20.1°C | 27.6°C | 38 mm | 75% | 0.4 m/s | 6.2 |
| 1999 | 35.4°C | 19.4°C | 27.4°C | 90 mm | 76% | 0.6 m/s | 6 |
| 1998 | 37.6°C | 20.3°C | 28.9°C | 25 mm | 64% | 0.4 m/s | 6 |
| 1997 | 34.4°C | 18.8°C | 26.6°C | 85 mm | 70% | 0.4 m/s | 5.7 |
| 1996 | 35.6°C | 20.5°C | 28.0°C | 118 mm | 75% | 0.4 m/s | 5.4 |
| 1995 | 35.9°C | 18.9°C | 27.4°C | 60 mm | 72% | 0.3 m/s | 5.8 |
| 1994 | 34.3°C | 17.1°C | 25.7°C | 143 mm | 79% | 0.4 m/s | 5.7 |
| 1993 | 37.5°C | 19.1°C | 28.3°C | 66 mm | 65% | 0.4 m/s | 6.4 |
| 1992 | 37.1°C | 20.6°C | 28.8°C | 37 mm | 63% | 0.5 m/s | 6.3 |
| 1991 | 37.6°C | 21.1°C | 29.3°C | 2 mm | 66% | 0.5 m/s | 6.2 |
| 1990 | 36.7°C | 21.2°C | 28.9°C | 46 mm | 65% | 0.5 m/s | 6.1 |
| 1989 | 37.1°C | 18.9°C | 28.0°C | 73 mm | 67% | 0.5 m/s | 6.2 |
| 1988 | 35.6°C | 19.8°C | 27.7°C | 185 mm | 76% | 0.3 m/s | 5.6 |
| 1987 | 36.9°C | 20.2°C | 28.6°C | 39 mm | 65% | 0.4 m/s | 6 |
| 1986 | 35.5°C | 20.4°C | 28.0°C | 62 mm | 73% | 0.4 m/s | 6.7 |
| 1985 | 34.4°C | 20.3°C | 27.3°C | 70 mm | 76% | 0.4 m/s | 6.2 |
| 1984 | 32.0°C | 19.5°C | 25.8°C | 165 mm | 80% | 0.4 m/s | 5.5 |
| 1983 🔥 | 38.0°C | 21.3°C | 29.7°C | 36 mm | 61% | 0.5 m/s | — |
| 1982 | 35.3°C | 19.7°C | 27.5°C | 194 mm | 77% | 0.4 m/s | — |
| 1981 | 36.1°C | 20.1°C | 28.1°C | 119 mm | 72% | 0.4 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 35.7°C with lows near 19.9°C (mean 27.8°C), based on 45 years of NASA POWER data.
April averages 100 mm of rainfall in Idukki, one of the drier months. The wettest on record was 249 mm in 2022.
The hottest April reached 38°C in 1983. The coldest dipped to 17.1°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have fallen by about 0.2°C. Daytime highs moved from 35.2°C to 34.9°C and overnight lows from 20.2°C to 20.1°C over the same span.
April is one of the warmer months of the year in Idukki and one of the drier months, so plan for around 35.7°C daytime highs and 19.9°C at night.
Not quite — April is the 12th coolest month in Idukki, averaging 27.8°C.
For April in Idukki, pack light, breathable clothing and sun protection, with typical highs of 35.7°C and lows of 19.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 73% — moderately humid.
Average wind speed in April is 0.4 m/s. The windiest April on record averaged 0.6 m/s (1999).
The wettest April on record was 2022 with 249 mm. On average, April sees 100 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 April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
