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Average Weather in Samāstipur India

In Samāstipur, 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 50°F to 99°F and is rarely below 44°F or above 106°F.

The hot season lasts for 3.1 months, from March 26 to June 29, with an average daily high temperature above 93°F. The hottest day of the year is May 24, with an average high of 99°F and low of 79°F.

The cool season lasts for 1.9 months, from December 11 to February 8, with an average daily high temperature below 77°F. The coldest day of the year is January 10, with an average low of 50°F and high of 71°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in SamāstipurJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMhotcoldcoolwarmswelteringcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In Samāstipur, 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 Samāstipur begins around September 26 and lasts for 8.7 months, ending around June 18. On May 9, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 91% of the time, and overcast or mostly cloudy 9% of the time.

The cloudier part of the year begins around June 18 and lasts for 3.3 months, ending around September 26. On August 6, the cloudiest day of the year, the sky is overcast or mostly cloudy 85% of the time, and clear, mostly clear, or partly cloudy 15% of the time.

Cloud Cover Categories

Cloud Cover Categories in SamāstipurclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 991%May 991%Aug 615%Aug 615%Sep 2653%Sep 2653%Jun 1853%Jun 1853%clearovercastmostly clear
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 3.5 months, from June 10 to September 26, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 65% on July 14.

The drier season lasts 8.5 months, from September 26 to June 10. The smallest chance of a wet day is 1% on December 5.

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 65% on July 14.

Daily Chance of Precipitation

Daily Chance of Precipitation in SamāstipurwetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 1465%Jul 1465%Dec 51%Dec 51%Jun 1033%Jun 1033%Sep 2634%Sep 2634%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Samāstipur experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.6 months, from April 17 to November 4, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 13, with an average total accumulation of 10.0 inches.

The rainless period of the year lasts for 5.4 months, from November 4 to April 17. The least rain falls around November 30, with an average total accumulation of 0.1 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Samāstipur varies over the course of the year. In 2017, the shortest day is December 21, with 10 hours, 31 minutes of daylight; the longest day is June 21, with 13 hours, 45 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in SamāstipurJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2013 hr, 45 minJun 2113 hr, 45 minJun 2112 hr, 8 minSep 2312 hr, 8 minSep 2310 hr, 31 minDec 2110 hr, 31 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 4:54 AM on June 9, and the latest sunrise is 1 hour, 41 minutes later at 6:35 AM on January 13. The earliest sunset is at 4:55 PM on November 30, and the latest sunset is 1 hour, 47 minutes later at 6:42 PM on July 2.

Daylight saving time (DST) is not observed in Samāstipur during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in SamāstipurJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 94:54 AMJun 94:54 AM6:42 PMJul 26:42 PMJul 2Nov 304:55 PMNov 304:55 PM6:35 AMJan 136:35 AMJan 13daynightnightnightnight
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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.

Samāstipur experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 6.9 months, from April 19 to November 15, during which time the comfort level is muggy, oppressive, or miserable at least 26% of the time. The muggiest day of the year is August 18, with muggy conditions 100% of the time.

The least muggy day of the year is January 11, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in SamāstipurmuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 110%Jan 110%100%Aug 18100%Aug 18Apr 1926%Apr 1926%Nov 1527%Nov 1527%miserablemiserabledrydryhumidhumidcomfortablecomfortablemuggymuggyoppressiveoppressive
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Samāstipur experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 7.3 months, from February 10 to September 20, with average wind speeds of more than 3.5 miles per hour. The windiest day of the year is June 19, with an average hourly wind speed of 4.7 miles per hour.

The calmer time of year lasts for 4.6 months, from September 20 to February 10. The calmest day of the year is November 6, with an average hourly wind speed of 2.3 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Samāstipur varies throughout the year.

The wind is most often from the east for 5.5 months, from April 21 to October 4, with a peak percentage of 70% on August 15. The wind is most often from the west for 6.6 months, from October 4 to April 21, with a peak percentage of 74% on January 1.

Wind Direction

Wind Direction in SamāstipurWEWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westeastsouthnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Solar Energy

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 27 to June 13, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest day of the year is May 18, with an average of 7.3 kWh.

The darker period of the year lasts for 2.5 months, from November 11 to January 28, with an average daily incident shortwave energy per square meter below 4.6 kWh. The darkest day of the year is December 19, with an average of 3.9 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in SamāstipurbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhMay 187.3 kWhMay 187.3 kWhDec 193.9 kWhDec 193.9 kWhMar 276.6 kWhMar 276.6 kWhJan 284.6 kWhJan 284.6 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Samāstipur are 25.862 deg latitude, 85.780 deg longitude, and 164 ft elevation.

The topography within 2 miles of Samāstipur is essentially flat, with a maximum elevation change of 75 feet and an average elevation above sea level of 165 feet. Within 10 miles is essentially flat (98 feet). Within 50 miles also contains only modest variations in elevation (318 feet).

The area within 2 miles of Samāstipur is covered by cropland (98%), within 10 miles by cropland (99%), and within 50 miles by cropland (93%).

Data Sources

This report illustrates the typical weather in Samāstipur, 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, Lok Nayak Jayaprakash Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Samāstipur.

At a distance of 76 kilometers from Samāstipur, 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 corrected for the elevation difference between the station and Samāstipur 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.

Other Data

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 .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.