October Weather in Tiruchirappalli India

Daily high temperatures decrease by 5°F, from 93°F to 88°F, rarely falling below 83°F or exceeding 98°F.

Daily low temperatures decrease by 2°F, from 78°F to 75°F, rarely falling below 73°F or exceeding 80°F.

For reference, on May 8, the hottest day of the year, temperatures in Tiruchirappalli typically range from 81°F to 100°F, while on January 17, the coldest day of the year, they range from 70°F to 87°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Arriaga, Mexico (10,512 miles away) is the far-away foreign place with temperatures most similar to Tiruchirappalli (view comparison).

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The month of October in Tiruchirappalli experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 85% to 72%.

The clearest day of the month is October 31, with clear, mostly clear, or partly cloudy conditions 28% of the time.

For reference, on July 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 94%, while on February 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 58%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Tiruchirappalli, the chance of a wet day over the course of October is rapidly increasing, starting the month at 35% and ending it at 43%.

For reference, the year's highest daily chance of a wet day is 44% on October 25, and its lowest chance is 2% on February 1.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during October in Tiruchirappalli is rapidly increasing, starting the month at 4.2 inches, when it rarely exceeds 7.5 inches or falls below 1.4 inches, and ending the month at 5.4 inches, when it rarely exceeds 9.5 inches or falls below 2.0 inches.

Over the course of October in Tiruchirappalli, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 17 minutes, implying an average daily decrease of 33 seconds, and weekly decrease of 3 minutes, 54 seconds.

The shortest day of the month is October 31, with 11 hours, 45 minutes of daylight and the longest day is October 1, with 12 hours, 1 minute of daylight.

The earliest sunrise of the month in Tiruchirappalli is 6:03 AM on October 5 and the latest sunrise is 2 minutes, 29 seconds later at 6:06 AM on October 31.

The latest sunset is 6:05 PM on October 1 and the earliest sunset is 14 minutes earlier at 5:51 PM on October 31.

Daylight saving time is not observed in Tiruchirappalli during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:54 AM and sets 12 hours, 46 minutes later, at 6:39 PM, while on December 21, the shortest day of the year, it rises at 6:28 AM and sets 11 hours, 30 minutes later, at 5:58 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for October 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Tiruchirappalli is essentially constant during October, remaining around 98% throughout.

The highest chance of a muggy day during October is 99% on October 5.

For reference, on October 4, the muggiest day of the year, there are muggy conditions 99% of the time, while on February 2, the least muggy day of the year, there are muggy conditions 72% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Tiruchirappalli is essentially constant during October, remaining within 0.2 miles per hour of 6.0 miles per hour throughout.

For reference, on June 29, the windiest day of the year, the daily average wind speed is 12.4 miles per hour, while on October 20, the calmest day of the year, the daily average wind speed is 5.8 miles per hour.

The lowest daily average wind speed during October is 5.8 miles per hour on October 20.

The wind direction in Tiruchirappalli during October is predominantly out of the west from October 1 to October 18 and the east from October 18 to October 31.

Tiruchirappalli is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Tiruchirappalli is essentially constant during October, remaining around 84°F throughout.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Tiruchirappalli are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Tiruchirappalli are very rapidly increasing during October, increasing by 950°F, from 8,957°F to 9,907°F, over the course of the month.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Tiruchirappalli is essentially constant during October, remaining around 4.6 kWh throughout.

The lowest average daily incident shortwave solar energy during October is 4.5 kWh on October 24.

For the purposes of this report, the geographical coordinates of Tiruchirappalli are 10.816 deg latitude, 78.697 deg longitude, and 259 ft elevation.

The topography within 2 miles of Tiruchirappalli contains only modest variations in elevation, with a maximum elevation change of 157 feet and an average elevation above sea level of 250 feet. Within 10 miles also contains only modest variations in elevation (207 feet). Within 50 miles contains only modest variations in elevation (4,590 feet).

The area within 2 miles of Tiruchirappalli is covered by artificial surfaces (97%), within 10 miles by cropland (75%) and artificial surfaces (15%), and within 50 miles by cropland (85%).