May is one of the warmer months of the year in Ernakulam, with average highs near 30.4°C and lows around 26.7°C (mean 28.6°C). It is a relatively wet time of year, averaging 255 mm of rainfall and 81% relative humidity across the period.
May is one of the warmer months of the year in Ernakulam. Across 45 years of records, the warmest May in Ernakulam was 1991 — when the month averaged 29.9°C — while the coldest was 1999 at 26.9°C. Typical May days reach 30.4°C with nights near 26.7°C. The long-term May temperature trend is broadly flat.
May is a relatively wet time of year in Ernakulam, averaging 255 mm of rainfall. The wettest May on record was 2004 with 875 mm, while the driest was 1983 at 16 mm.
Relative humidity in Ernakulam during May averages 81%. The most humid May was 2004 at 87%, and the least humid was 1991 at 74%.
May receives about 5.2 kWh/m²/day of solar energy in Ernakulam. The sunniest Mays were 1987 and 2000 at 5.8 kWh/m²/day, and the cloudiest were 2004 and 2024 at 4.3.
Average wind speed in Ernakulam during May is 2.9 m/s. The windiest May was 2025 at 3.6 m/s, while the calmest were 2015 and 2023 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.5°C | 28.6°C | 28.2°C | 28.7°C | 28.9°C | +0.4°C |
| Avg High | 30.6°C | 30.5°C | 30.0°C | 30.4°C | 30.6°C | 0°C |
| Avg Low | 26.5°C | 26.6°C | 26.5°C | 26.9°C | 27.2°C | +0.7°C |
| Avg Rain | 160 mm | 203 mm | 330 mm | 226 mm | 405 mm | +245 mm |
May temperatures in Ernakulam have risen by about 0.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of 24.5°C (2004) to a record high of 36.1°C (2002).
Rainfall in May is a relatively wet time of year, averaging 255 mm, with a wettest year of 875 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Ernakulam
If your dates are flexible, the more temperate months of January and December tend to be the most comfortable for visiting Ernakulam. That said, May — with days averaging 30.4°C and nights around 26.7°C (mean 28.6°C) and higher rainfall (255 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 | 30.9°C | 29.4°C | 27.8°C | 32.9°C | 26.8°C | 480 mm | 81% | 3.6 m/s | 4.8 |
| 2024 | 31.2°C | 29.5°C | 27.7°C | 35.6°C | 26.7°C | 565 mm | 80% | 2.9 m/s | 4.3 |
| 2023 | 31.1°C | 29.0°C | 27.0°C | 33.3°C | 24.7°C | 111 mm | 79% | 2.2 m/s | 5.7 |
| 2022 | 29.2°C | 27.8°C | 26.4°C | 31.1°C | 25.4°C | 441 mm | 86% | 2.8 m/s | 4.5 |
| 2021 | 30.0°C | 28.3°C | 26.6°C | 32.9°C | 25.2°C | 580 mm | 84% | 2.5 m/s | 4.8 |
| 2020 | 30.9°C | 29.3°C | 27.6°C | 33.9°C | 26.3°C | 254 mm | 82% | 2.7 m/s | 5.1 |
| 2019 | 31.7°C | 29.6°C | 27.4°C | 33.4°C | 26.6°C | 74 mm | 78% | 2.9 m/s | 5.7 |
| 2018 | 29.5°C | 28.0°C | 26.5°C | 32.7°C | 25.6°C | 321 mm | 84% | 2.8 m/s | 5 |
| 2017 | 30.6°C | 28.9°C | 27.1°C | 33.7°C | 25.7°C | 327 mm | 82% | 2.7 m/s | 5.2 |
| 2016 | 31.2°C | 29.4°C | 27.5°C | 34.2°C | 26.3°C | 245 mm | 80% | 2.9 m/s | 5 |
| 2015 | 30.2°C | 28.5°C | 26.7°C | 31.8°C | 25.2°C | 228 mm | 83% | 2.2 m/s | 4.9 |
| 2014 | 30.4°C | 28.7°C | 27.0°C | 32.1°C | 25.7°C | 266 mm | 82% | 2.5 m/s | 5.4 |
| 2013 | 30.6°C | 28.7°C | 26.8°C | 32.8°C | 25.4°C | 211 mm | 80% | 3.3 m/s | 5.1 |
| 2012 | 29.2°C | 27.8°C | 26.3°C | 30.3°C | 25.6°C | 132 mm | 85% | 2.9 m/s | 5.2 |
| 2011 | 30.5°C | 28.5°C | 26.6°C | 32.5°C | 25.6°C | 224 mm | 80% | 3 m/s | 5.6 |
| 2010 | 30.5°C | 28.9°C | 27.3°C | 32.0°C | 26.0°C | 229 mm | 83% | 3 m/s | 4.9 |
| 2009 | 29.6°C | 28.0°C | 26.5°C | 31.3°C | 25.0°C | 347 mm | 84% | 2.7 m/s | 5.1 |
| 2008 | 29.5°C | 27.8°C | 26.1°C | 30.6°C | 25.5°C | 162 mm | 83% | 2.7 m/s | 5.7 |
| 2007 | 30.2°C | 28.4°C | 26.5°C | 32.0°C | 25.1°C | 214 mm | 82% | 2.7 m/s | 5.5 |
| 2006 | 30.1°C | 28.3°C | 26.5°C | 32.5°C | 25.6°C | 592 mm | 82% | 3.1 m/s | 4.9 |
| 2005 | 30.7°C | 28.7°C | 26.7°C | 32.3°C | 25.6°C | 180 mm | 81% | 2.6 m/s | 5.5 |
| 2004 🌧️ | 28.8°C | 27.5°C | 26.1°C | 33.1°C | 24.5°C | 875 mm | 87% | 3.3 m/s | 4.3 |
| 2003 | 30.3°C | 28.6°C | 27.0°C | 31.6°C | 26.2°C | 218 mm | 83% | 2.9 m/s | 5.3 |
| 2002 | 30.2°C | 28.5°C | 26.8°C | 36.1°C | 25.9°C | 323 mm | 83% | 3.1 m/s | 5.1 |
| 2001 | 29.7°C | 28.1°C | 26.6°C | 30.8°C | 25.1°C | 258 mm | 84% | 2.8 m/s | 5.2 |
| 2000 | 30.5°C | 28.4°C | 26.3°C | 32.4°C | 24.7°C | 137 mm | 80% | 3 m/s | 5.8 |
| 1999 ❄️ | 28.4°C | 26.9°C | 25.5°C | 32.2°C | 24.7°C | 334 mm | 86% | 3.2 m/s | 4.5 |
| 1998 | 32.0°C | 29.8°C | 27.6°C | 35.0°C | 26.4°C | 216 mm | 78% | 2.8 m/s | 5.1 |
| 1997 | 31.1°C | 28.9°C | 26.6°C | 33.1°C | 25.6°C | 64 mm | 77% | 2.8 m/s | 5.2 |
| 1996 | 31.3°C | 28.9°C | 26.5°C | 32.8°C | 25.6°C | 36 mm | 77% | 2.9 m/s | 5.6 |
| 1995 | 29.5°C | 27.9°C | 26.3°C | 32.0°C | 25.0°C | 394 mm | 84% | 3 m/s | 5 |
| 1994 | 30.2°C | 28.4°C | 26.5°C | 32.6°C | 25.4°C | 188 mm | 80% | 3.2 m/s | 5.1 |
| 1993 | 30.3°C | 28.5°C | 26.6°C | 32.8°C | 25.6°C | 197 mm | 81% | 2.8 m/s | 5.1 |
| 1992 | 30.2°C | 28.3°C | 26.4°C | 33.8°C | 25.2°C | 215 mm | 81% | 2.8 m/s | 5.4 |
| 1991 🔥 | 32.2°C | 29.9°C | 27.5°C | 34.7°C | 26.7°C | 36 mm | 74% | 2.8 m/s | 5.6 |
| 1990 | 30.0°C | 28.2°C | 26.5°C | 32.0°C | 25.2°C | 351 mm | 81% | 3.5 m/s | 4.5 |
| 1989 | 30.3°C | 28.4°C | 26.4°C | 33.1°C | 25.6°C | 262 mm | 80% | 3.4 m/s | 4.8 |
| 1988 | 30.1°C | 28.4°C | 26.6°C | 31.3°C | 25.6°C | 106 mm | 82% | 3.2 m/s | 5 |
| 1987 | 31.7°C | 29.3°C | 26.9°C | 34.9°C | 26.3°C | 118 mm | 75% | 2.6 m/s | 5.8 |
| 1986 | 30.2°C | 28.3°C | 26.3°C | 32.2°C | 25.2°C | 127 mm | 80% | 3 m/s | 5.5 |
| 1985 | 30.8°C | 28.5°C | 26.3°C | 34.1°C | 24.9°C | 350 mm | 78% | 3.4 m/s | 5 |
| 1984 | 30.8°C | 28.5°C | 26.3°C | 32.7°C | 25.3°C | 101 mm | 79% | 3.1 m/s | 5.6 |
| 1983 | 31.6°C | 29.3°C | 27.1°C | 34.1°C | 26.1°C | 16 mm | 75% | 2.9 m/s | — |
| 1982 | 29.4°C | 27.7°C | 26.0°C | 31.0°C | 25.0°C | 226 mm | 83% | 2.4 m/s | — |
| 1981 | 30.4°C | 28.4°C | 26.5°C | 32.8°C | 25.2°C | 132 mm | 80% | 3 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 30.4°C with lows near 26.7°C (mean 28.6°C), based on 45 years of NASA POWER data.
May averages 255 mm of rainfall in Ernakulam, a relatively wet time of year. The wettest on record was 875 mm in 2004.
The hottest May reached 36.1°C in 2002. The coldest dipped to 24.5°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 26.4°C to 27.1°C while daytime highs eased from 30.6°C to 30.5°C, narrowing the gap between day and night.
May is one of the warmer months of the year in Ernakulam and a relatively wet time of year, so plan for around 30.4°C daytime highs and 26.7°C at night.
Not quite — May is the 9th coolest month in Ernakulam, averaging 28.6°C.
For May in Ernakulam, pack light, breathable clothing and sun protection, with typical highs of 30.4°C and lows of 26.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 81% — quite humid.
Average wind speed in May is 2.9 m/s. The windiest May on record averaged 3.6 m/s (2025).
The wettest May on record was 2004 with 875 mm. On average, May sees 255 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 Ernakulam behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
