This report describes the typical weather at the Sardar Vallabhbhai Patel International Airport (Ahmadabad Airport) (Ahmedabad, India) weather station over the course of an average December. It is based on the historical records from 1996 to 2012. Earlier records are either unavailable or unreliable.
Ahmedabad has a hot semi-arid steppe climate. The area within 25 mi of this station is covered by croplands (90%), grasslands (6%), and built-up areas (2%).
The month of December is characterized by falling daily high temperatures, with daily highs decreasing from 87°F to 81°F over the course of the month, exceeding 91°F or dropping below 78°F only one day in ten.
Over the course of December, the length of the day is essentially constant. The shortest day of the month is December 19 with 10:43 hours of daylight; the longest day is December 1 with 10:50 hours of daylight.
The earliest sunrise is at 7:04am on December 1; the latest sunset is at 6:05pm on December 31; the latest sunrise is at 7:20am on December 31; the earliest sunset is at 5:53pm on December 2.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 6% (clear) and does not vary substantially over the course of the month.
On December 16, a representative day, the sky is clear or mostly clear 67% of the time, partly cloudy 8% of the time, and mostly cloudy or overcast 4% of the time.
The average probability that some form of precipitation will be observed in a given day is 2%, with little variation over the course of the month.
Throughout December, the most common forms of precipitation are light rain, drizzle, and moderate rain.
Light rain is the most severe precipitation observed during 44% of those days with precipitation. It is most likely around December 9, when it is observed during 1% of all days.
Drizzle is the most severe precipitation observed during 25% of those days with precipitation. It is most likely around December 4, when it is observed during 1% of all days.
Moderate rain is the most severe precipitation observed during 18% of those days with precipitation. It is most likely around December 3, when it is observed during 1% of all days.
Either snow is exceptionally unlikely to fall at this location in December or this station does not reliably report precipitation types.
The relative humidity typically ranges from 27% (dry) to 84% (humid) over the course of a typical December, rarely dropping below 17% (dry) and reaching as high as 100% (very humid).
The air is driest around December 2, at which time the relative humidity drops below 30% (dry) three days out of four; it is most humid around December 22, rising above 75% (humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a typical December, the dew point typically varies from 43°F (dry) to 58°F (comfortable) and is rarely below 36°F (dry) or above 65°F (mildy humid).
The time of the month between December 1 and December 31 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of December typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 13 mph (moderate breeze).
The highest average wind speed of 4 mph (light breeze) occurs around December 31, at which time the average daily maximum wind speed is 9 mph (gentle breeze).
The lowest average wind speed of 3 mph (light breeze) occurs around December 1, at which time the average daily maximum wind speed is 8 mph (gentle breeze).