Average Weather in New Delhi India
New Delhi has a hot semi-arid steppe climate. The temperature typically varies from 46°F to 103°F over the course of the year, and is rarely below 42°F or above 110°F.
The hot season lasts for 86 days, from April 14 to July 9, with an average daily high temperature above 96°F. The hottest day of the year is May 27, with an average high of 103°F and low of 81°F.
The cool season lasts for 70 days, from December 7 to February 15, with an average daily high temperature below 74°F. The coldest day of the year is January 7, with an average low of 46°F and high of 67°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
The length of the day in New Delhi varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 19 minutes of daylight; the longest day is June 21, with 13 hours, 58 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:22 AM on June 10, and the latest sunrise is 1 hour, 53 minutes later at 7:15 AM on January 12. The earliest sunset is at 5:23 PM on December 1, and the latest sunset is 1 hour, 59 minutes later at 7:23 PM on June 30.
Daylight saving time (DST) is not observed in New Delhi during 2017.
Sunrise & Sunset with Twilight
In New Delhi, 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 in New Delhi begins around September 2 and lasts for 306 days, ending around July 5. On October 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 96% of the time, and overcast or mostly cloudy 4% of the time.
The cloudier part of the year begins around July 5 and lasts for 59 days, ending around September 2. On July 31, the cloudiest day of the year, the sky is overcast or mostly cloudy 59% of the time, and clear, mostly clear, or partly cloudy 41% 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 in New Delhi varies very significantly throughout the year.
The wetter season lasts 89 days, from June 17 to September 14, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 55% on July 22.
The drier season lasts 276 days, from September 14 to June 17. The smallest chance of a wet day is 2% on November 26.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 55% on July 22.
Daily Chance of Precipitation
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 in the year. New Delhi experiences very significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 282 days, from January 9 to October 18, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 4, with an average total accumulation of 6.9 inches.
The rainless period of the year lasts for 83 days, from October 18 to January 9. The least rain falls around November 15, with and average total accumulation of 0.1 inches.
Average Monthly Rainfall
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.
New Delhi experiences very significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 153 days, from May 20 to October 20, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is August 17, with muggy conditions 99% of the time.
The least muggy day of the year is January 28, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
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 New Delhi experiences mildly seasonal variation over the course of the year.
The windier part of the year lasts for 179 days, from January 30 to July 28, with average wind speeds of more than 3.6 miles per hour. The windiest day of the year is May 30, with an average hourly wind speed of 4.5 miles per hour.
The calmer time of year lasts for 186 days, from July 28 to January 30. The calmest day of the year is October 16, with an average hourly wind speed of 2.7 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in New Delhi varies throughout the year.
The wind is most often from the east for 46 days, from July 14 to August 29, with a peak percentage of 41% on July 30. The wind is most often from the west for 29 days, from August 29 to September 27 and for 238 days, from November 18 to July 14, with a peak percentage of 64% on May 29. The wind is most often from the north for 52 days, from September 27 to November 18, with a peak percentage of 41% on November 4.
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 83 days, from April 7 to June 29, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest day of the year is May 25, with an average of 7.6 kWh.
The darker period of the year lasts for 87 days, from November 8 to February 3, with an average daily incident shortwave energy per square meter below 4.4 kWh. The darkest day of the year is December 24, with an average of 3.6 kWh.
Average Daily Incident Shortwave Solar Energy
The area within 2 miles of New Delhi is covered by artificial surfaces (99%), within 10 miles by artificial surfaces (79%) and cropland (14%), and within 50 miles by cropland (91%).
The topography within 2 miles of New Delhi contains only modest variations in elevation, with a maximum elevation change of 177 feet, and an average elevation above sea level of 721 feet. Within 10 miles also contains only modest variations in elevation (328 feet). Within 50 miles contains significant variations in elevation (797 feet).
This report illustrates the typical weather in New Delhi, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, Safdarjung Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of New Delhi.
At a distance of 6 kilometers from New Delhi, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are are corrected for the elevation difference between the station and New Delhi according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .