This report describes the typical weather at the Juan Manuel Gálvez International Airport (Roatán International Airport) (Roatán, Honduras) 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.
Roatán has a tropical rainforest climate with no dry season. The area within 25 mi of this station is covered by oceans and seas (100%).
The month of January is characterized by essentially constant daily high temperatures, with daily highs around 82°F throughout the month, exceeding 86°F or dropping below 77°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 2 with 11:11 hours of daylight; the longest day is January 30 with 11:25 hours of daylight.
The earliest sunrise is at 6:14am on January 1; the latest sunset is at 5:42pm on January 31; the latest sunrise is at 6:18am on January 21; the earliest sunset is at 5:25pm on January 1.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover ranges from 56% (partly cloudy) to 65% (partly cloudy). The trend is for the sky to be clearing with the median cloud cover decreasing by 7% from the start to the end of the month.
On January 16, a representative day, the sky is clear or mostly clear 15% of the time, partly cloudy 15% of the time, and mostly cloudy or overcast 18% 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 39% of days. Precipitation is least likely around January 31, occurring in 30% of days.
Throughout January, the most common forms of precipitation are drizzle, heavy rain, moderate rain, and light rain.
Drizzle is the most severe precipitation observed during 35% of those days with precipitation. It is most likely around January 1, when it is observed during 14% of all days.
Heavy rain is the most severe precipitation observed during 23% of those days with precipitation. It is most likely around January 9, when it is observed during 9% of all days.
Moderate rain is the most severe precipitation observed during 21% of those days with precipitation. It is most likely around January 3, when it is observed during 8% of all days.
Light rain is the most severe precipitation observed during 19% of those days with precipitation. It is most likely around January 1, when it is observed during 8% 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 68% (mildly humid) to 91% (very humid) over the course of a typical January, rarely dropping below 60% (mildly humid) and reaching as high as 99% (very humid).
The air is driest around January 31, at which time the relative humidity drops below 72% (humid) three days out of four; it is most humid around January 1, rising above 88% (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 68°F (muggy) to 74°F (very muggy) and is rarely below 63°F (mildy humid) or above 77°F (oppressive).
Over the course of January typical wind speeds vary from 2 mph to 16 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 11 mph (gentle 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 9 mph (gentle breeze) occurs around January 1, at which time the average daily maximum wind speed is 14 mph (moderate breeze).