This report describes the typical weather at the Managua (Augusto Cesar Sandino) International Airport (Managua, Nicaragua) weather station over the course of an average January. It is based on the historical records from 1996 to 2012. Earlier records are either unavailable or unreliable.
Managua has a tropical savanna climate with dry winters. The area within 25 mi of this station is covered by grasslands (54%), lakes and rivers (21%), forests (12%), croplands (9%), and shrublands (3%).
The month of January is characterized by essentially constant daily high temperatures, with daily highs around 90°F throughout the month, exceeding 93°F or dropping below 87°F only one day in ten.
Over the course of January, the length of the day is essentially constant. The shortest day of the month is January 8 with 11:26 hours of daylight; the longest day is January 30 with 11:36 hours of daylight.
The earliest sunrise is at 6:05am on January 1; the latest sunset is at 5:46pm on January 31; the latest sunrise is at 6:11am on January 26; the earliest sunset is at 5:31pm on January 1.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover is 27% (mostly clear) and does not vary substantially over the course of the month.
On January 16, a representative day, the sky is clear or mostly clear 63% of the time, partly cloudy 21% of the time, and mostly cloudy or overcast 5% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around January 1, occurring in 15% of days. Precipitation is least likely around January 31, occurring in 10% of days.
Throughout January, the most common forms of precipitation are drizzle, moderate rain, and thunderstorms.
Drizzle is the most severe precipitation observed during 64% of those days with precipitation. It is most likely around January 1, when it is observed during 8% of all days.
Moderate rain is the most severe precipitation observed during 19% of those days with precipitation. It is most likely around January 4, when it is observed during 3% of all days.
Thunderstorms are the most severe precipitation observed during 12% of those days with precipitation. They are most likely around January 1, when it is observed during 3% of all days.
Either snow is exceptionally unlikely to fall at this location in January or this station does not reliably report precipitation types.
The relative humidity typically ranges from 43% (comfortable) to 91% (very humid) over the course of a typical January, rarely dropping below 36% (comfortable) and reaching as high as 100% (very humid).
The air is driest around January 31, at which time the relative humidity drops below 47% (comfortable) three days out of four; it is most humid around January 1, rising above 87% (very 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 January, the dew point typically varies from 63°F (mildy humid) to 70°F (muggy) and is rarely below 58°F (comfortable) or above 73°F (very muggy).
Over the course of January typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 21 mph (fresh breeze).
The highest average wind speed of 7 mph (light breeze) occurs around January 31, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 6 mph (light breeze) occurs around January 1, at which time the average daily maximum wind speed is 15 mph (moderate breeze).