Climate and Average Weather Year Round at Lal Bahadur Shastri Airport India

At Lal Bahadur Shastri Airport, the wet season is oppressive and mostly cloudy, the dry season is mostly clear, and it is hot year round. Over the course of the year, the temperature typically varies from 48°F to 106°F and is rarely below 43°F or above 112°F.

Based on the beach/pool score, the best times of year to visit Lal Bahadur Shastri Airport for hot-weather activities are from mid March to early May and from early October to early November.

The hot season lasts for 2.6 months, from April 3 to June 22, with an average daily high temperature above 99°F. The hottest month of the year at Lal Bahadur Shastri Airport is May, with an average high of 105°F and low of 79°F.

The cool season lasts for 2.2 months, from December 5 to February 11, with an average daily high temperature below 78°F. The coldest month of the year at Lal Bahadur Shastri Airport is January, with an average low of 49°F and high of 72°F.

At Lal Bahadur Shastri Airport, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.

The clearer part of the year at Lal Bahadur Shastri Airport begins around September 22 and lasts for 8.9 months, ending around June 19.

The clearest month of the year at Lal Bahadur Shastri Airport is May, during which on average the sky is clear, mostly clear, or partly cloudy 90% of the time.

The cloudier part of the year begins around June 19 and lasts for 3.1 months, ending around September 22.

The cloudiest month of the year at Lal Bahadur Shastri Airport is August, during which on average the sky is overcast or mostly cloudy 80% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Lal Bahadur Shastri Airport varies very significantly throughout the year.

The wetter season lasts 3.3 months, from June 14 to September 23, with a greater than 32% chance of a given day being a wet day. The month with the most wet days at Lal Bahadur Shastri Airport is July, with an average of 18.3 days with at least 0.04 inches of precipitation.

The drier season lasts 8.7 months, from September 23 to June 14. The month with the fewest wet days at Lal Bahadur Shastri Airport is November, with an average of 0.8 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone at Lal Bahadur Shastri Airport is July, with an average of 18.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 61% on July 20.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Lal Bahadur Shastri Airport experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 8.8 months, from February 4 to October 29, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Lal Bahadur Shastri Airport is July, with an average rainfall of 8.1 inches.

The rainless period of the year lasts for 3.2 months, from October 29 to February 4. The month with the least rain at Lal Bahadur Shastri Airport is November, with an average rainfall of 0.2 inches.

The length of the day at Lal Bahadur Shastri Airport varies over the course of the year. In 2024, the shortest day is December 21, with 10 hours, 33 minutes of daylight; the longest day is June 21, with 13 hours, 44 minutes of daylight.

The earliest sunrise is at 5:07 AM on June 9, and the latest sunrise is 1 hour, 39 minutes later at 6:46 AM on January 13. The earliest sunset is at 5:07 PM on November 29, and the latest sunset is 1 hour, 46 minutes later at 6:53 PM on July 2.

Daylight saving time (DST) is not observed at Lal Bahadur Shastri Airport during 2024.

The figure below presents a compact representation of key lunar data for 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.

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.

Lal Bahadur Shastri Airport experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.1 months, from May 5 to November 7, during which time the comfort level is muggy, oppressive, or miserable at least 26% of the time. The month with the most muggy days at Lal Bahadur Shastri Airport is August, with 31.0 days that are muggy or worse.

The month with the fewest muggy days at Lal Bahadur Shastri Airport is January, with 0.7 days that are muggy or worse.

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 at Lal Bahadur Shastri Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from February 15 to September 13, with average wind speeds of more than 6.7 miles per hour. The windiest month of the year at Lal Bahadur Shastri Airport is June, with an average hourly wind speed of 8.4 miles per hour.

The calmer time of year lasts for 5.0 months, from September 13 to February 15. The calmest month of the year at Lal Bahadur Shastri Airport is November, with an average hourly wind speed of 5.1 miles per hour.

The predominant average hourly wind direction at Lal Bahadur Shastri Airport varies throughout the year.

The wind is most often from the east for 4.5 months, from May 14 to September 29, with a peak percentage of 53% on August 5. The wind is most often from the west for 7.5 months, from September 29 to May 14, with a peak percentage of 49% on January 1.

To characterize how pleasant the weather is at Lal Bahadur Shastri Airport throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Lal Bahadur Shastri Airport for general outdoor tourist activities are from early February to mid March and from late October to early December, with a peak score in the second week of November.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Lal Bahadur Shastri Airport for hot-weather activities are from mid March to early May and from early October to early November, with a peak score in the last week of March.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 at Lal Bahadur Shastri Airport 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.

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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 2.5 months, from March 29 to June 13, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest month of the year at Lal Bahadur Shastri Airport is May, with an average of 7.5 kWh.

The darker period of the year lasts for 2.5 months, from November 9 to January 27, with an average daily incident shortwave energy per square meter below 4.7 kWh. The darkest month of the year at Lal Bahadur Shastri Airport is December, with an average of 4.0 kWh.