July is close to Theni's year-round average, with average highs near 28.1°C and lows around 19.9°C (mean 24°C). It is a relatively wet time of year, averaging 126 mm of rainfall and 78% relative humidity across the period.
July is close to Theni's year-round average. Across 45 years of records, the warmest July in Theni was 2019 — when the month averaged 25.8°C — while the coldest was 1985 at 22°C. Typical July days reach 28.1°C with nights near 19.9°C. The long-term trend is warming, about 0.4°C per decade.
July is a relatively wet time of year in Theni, averaging 126 mm of rainfall. The wettest July on record was 2022 with 240 mm, while the driest was 2012 at 39 mm.
Relative humidity in Theni during July averages 78%. The most humid July was 1981 at 85%, and the least humid was 2000 at 70%.
July receives about 4.6 kWh/m²/day of solar energy in Theni. 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 Theni during July is 2.8 m/s. The windiest July was 2013 at 3.7 m/s, while the calmest was 2020 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.4°C | 23.4°C | 24.0°C | 24.8°C | 24.6°C | +1.2°C |
| Avg High | 27.5°C | 27.1°C | 28.0°C | 29.3°C | 28.8°C | +1.3°C |
| Avg Low | 19.3°C | 19.6°C | 20.0°C | 20.3°C | 20.4°C | +1.1°C |
| Avg Rain | 132 mm | 160 mm | 135 mm | 78 mm | 126 mm | -5 mm |
July temperatures in Theni have risen by about 1.6°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 16.8°C (1985) to a record high of 34.2°C (1983).
Rainfall in July is a relatively wet time of year, averaging 126 mm, with a wettest year of 240 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Theni
July is a good time to visit Theni, with days averaging 28.1°C and nights around 19.9°C (mean 24°C, close to Theni's yearly average) and higher rainfall. January and December are marginally more temperate, but July still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.8°C | 25.4°C | 21.0°C | 31.7°C | 19.8°C | 61 mm | 72% | 3.5 m/s | 4.5 |
| 2024 | 28.6°C | 24.6°C | 20.5°C | 31.2°C | 19.6°C | 83 mm | 76% | 3.3 m/s | 4.1 |
| 2023 | 29.9°C | 25.0°C | 20.2°C | 32.5°C | 19.0°C | 91 mm | 73% | 3.1 m/s | 4.6 |
| 2022 🌧️ | 27.8°C | 23.9°C | 20.1°C | 29.8°C | 19.2°C | 240 mm | 79% | 2.6 m/s | 4.4 |
| 2021 | 28.2°C | 24.3°C | 20.3°C | 31.0°C | 19.3°C | 121 mm | 80% | 2.7 m/s | 4.5 |
| 2020 | 28.3°C | 24.3°C | 20.2°C | 30.3°C | 19.3°C | 164 mm | 80% | 1.8 m/s | 4.8 |
| 2019 🔥 | 30.8°C | 25.8°C | 20.7°C | 33.3°C | 19.4°C | 69 mm | 71% | 2.6 m/s | 4.8 |
| 2018 | 28.8°C | 24.6°C | 20.5°C | 31.4°C | 18.6°C | 98 mm | 76% | 3.3 m/s | 4.4 |
| 2017 | 30.2°C | 25.3°C | 20.3°C | 33.1°C | 18.6°C | 81 mm | 72% | 2.6 m/s | 5 |
| 2016 | 29.0°C | 24.7°C | 20.4°C | 32.2°C | 18.4°C | 158 mm | 75% | 2.7 m/s | 4.8 |
| 2015 | 29.9°C | 25.0°C | 20.2°C | 32.3°C | 18.7°C | 44 mm | 74% | 2.7 m/s | 5.4 |
| 2014 | 29.1°C | 24.9°C | 20.7°C | 31.6°C | 19.3°C | 51 mm | 72% | 3.6 m/s | 4.9 |
| 2013 | 27.9°C | 23.9°C | 20.0°C | 30.6°C | 19.1°C | 66 mm | 75% | 3.7 m/s | 4.1 |
| 2012 | 30.1°C | 25.3°C | 20.5°C | 32.4°C | 19.3°C | 39 mm | 73% | 2.7 m/s | 5.3 |
| 2011 | 29.1°C | 24.3°C | 19.5°C | 31.7°C | 18.4°C | 79 mm | 72% | 3.2 m/s | 4.5 |
| 2010 | 28.5°C | 24.2°C | 19.9°C | 32.5°C | 18.5°C | 99 mm | 76% | 2.8 m/s | 4.4 |
| 2009 | 28.4°C | 24.2°C | 19.9°C | 32.5°C | 18.0°C | 105 mm | 76% | 3.3 m/s | 4.6 |
| 2008 | 28.6°C | 24.3°C | 20.0°C | 32.0°C | 18.9°C | 141 mm | 76% | 2.4 m/s | 4.8 |
| 2007 | 27.5°C | 23.9°C | 20.3°C | 29.4°C | 18.9°C | 166 mm | 81% | 2.4 m/s | 4.4 |
| 2006 | 27.4°C | 23.6°C | 19.9°C | 30.6°C | 18.5°C | 124 mm | 81% | 3.3 m/s | 4.9 |
| 2005 | 27.0°C | 23.7°C | 20.3°C | 28.7°C | 19.4°C | 167 mm | 83% | 2.9 m/s | 4.6 |
| 2004 | 26.7°C | 23.0°C | 19.3°C | 28.7°C | 17.1°C | 172 mm | 84% | 2.3 m/s | 4.6 |
| 2003 | 27.5°C | 23.8°C | 20.0°C | 30.2°C | 18.6°C | 140 mm | 82% | 2.1 m/s | 4.7 |
| 2002 | 30.1°C | 25.2°C | 20.3°C | 31.7°C | 18.7°C | 57 mm | 75% | 2.8 m/s | 5.1 |
| 2001 | 27.3°C | 23.5°C | 19.6°C | 30.3°C | 18.1°C | 202 mm | 81% | 2.9 m/s | 4.9 |
| 2000 | 29.6°C | 24.7°C | 19.9°C | 32.3°C | 17.7°C | 79 mm | 70% | 3.2 m/s | 5.2 |
| 1999 | 27.1°C | 23.3°C | 19.5°C | 29.8°C | 18.4°C | 90 mm | 79% | 3.1 m/s | 4.8 |
| 1998 | 27.8°C | 24.1°C | 20.3°C | 30.1°C | 19.2°C | 97 mm | 79% | 2.7 m/s | 4.8 |
| 1997 | 27.0°C | 23.5°C | 20.0°C | 29.1°C | 18.7°C | 212 mm | 83% | 3 m/s | 4.1 |
| 1996 | 26.8°C | 23.3°C | 19.8°C | 31.5°C | 17.4°C | 190 mm | 81% | 3 m/s | 3.8 |
| 1995 | 27.8°C | 23.8°C | 19.7°C | 31.4°C | 18.5°C | 114 mm | 79% | 2.7 m/s | 3.9 |
| 1994 | 26.9°C | 23.2°C | 19.5°C | 29.1°C | 18.3°C | 211 mm | 80% | 3.1 m/s | 4 |
| 1993 | 26.8°C | 23.2°C | 19.6°C | 28.2°C | 17.8°C | 200 mm | 81% | 3.2 m/s | 4.1 |
| 1992 | 26.6°C | 23.1°C | 19.5°C | 29.3°C | 18.4°C | 156 mm | 82% | 2.7 m/s | 4.3 |
| 1991 | 26.2°C | 22.7°C | 19.2°C | 27.4°C | 17.7°C | 153 mm | 84% | 3.1 m/s | 3.8 |
| 1990 | 27.5°C | 23.3°C | 19.1°C | 30.3°C | 17.7°C | 180 mm | 78% | 2.8 m/s | 4.4 |
| 1989 | 26.8°C | 23.1°C | 19.4°C | 29.7°C | 18.1°C | 180 mm | 82% | 2.6 m/s | 4.5 |
| 1988 | 26.5°C | 23.1°C | 19.7°C | 28.1°C | 17.8°C | 213 mm | 84% | 2.3 m/s | 4.1 |
| 1987 | 30.4°C | 25.1°C | 19.9°C | 33.6°C | 18.5°C | 50 mm | 73% | 2.3 m/s | 5.3 |
| 1986 | 28.9°C | 24.3°C | 19.7°C | 31.2°C | 17.9°C | 52 mm | 73% | 2.9 m/s | 4.7 |
| 1985 ❄️ | 25.8°C | 22.0°C | 18.2°C | 29.0°C | 16.8°C | 86 mm | 82% | 2.5 m/s | 4.7 |
| 1984 | 27.2°C | 23.1°C | 18.9°C | 29.2°C | 17.7°C | 188 mm | 79% | 3 m/s | 4.7 |
| 1983 | 29.6°C | 24.7°C | 19.9°C | 34.2°C | 17.8°C | 66 mm | 70% | 2.9 m/s | — |
| 1982 | 26.1°C | 22.3°C | 18.6°C | 28.8°C | 16.9°C | 173 mm | 84% | 2.5 m/s | — |
| 1981 | 26.3°C | 22.8°C | 19.4°C | 28.2°C | 18.3°C | 176 mm | 85% | 2.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 28.1°C with lows near 19.9°C (mean 24°C), based on 45 years of NASA POWER data.
July averages 126 mm of rainfall in Theni, a relatively wet time of year. The wettest on record was 240 mm in 2022.
The hottest July reached 34.2°C in 1983. The coldest dipped to 16.8°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.6°C. Daytime highs moved from 27°C to 28.9°C and overnight lows from 19°C to 20.4°C over the same span.
July is close to Theni's year-round average and a relatively wet time of year, so plan for around 28.1°C daytime highs and 19.9°C at night.
Not quite — July is the 5th coolest month in Theni, averaging 24°C.
For July in Theni, pack light layers you can adjust through the day, with typical highs of 28.1°C and lows of 19.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 78% — quite humid.
Average wind speed in July is 2.8 m/s. The windiest July on record averaged 3.7 m/s (2013).
The wettest July on record was 2022 with 240 mm. On average, July sees 126 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 Theni 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.
