This report describes the typical weather at the Sangster International Airport (Montego Bay, Jamaica) weather station over the course of an average October. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Montego Bay has a tropical monsoon climate with short dry season. The area within 25 mi of this station is covered by oceans and seas (55%) and forests (41%).
The month of October is characterized by essentially constant daily high temperatures, with daily highs around 87°F throughout the month, exceeding 90°F or dropping below 84°F only one day in ten.
Over the course of October, the length of the day is essentially constant. The shortest day of the month is October 31 with 11:28 hours of daylight; the longest day is October 1 with 11:57 hours of daylight.
The earliest sunrise is at 6:02am on October 2; the latest sunset is at 6:00pm on October 1; the latest sunrise is at 6:11am on October 31; the earliest sunset is at 5:39pm on October 31.
Daylight saving time (DST) is not observed in 2012.
The median cloud cover is 46% (partly cloudy) and does not vary substantially over the course of the month.
On October 16, a representative day, the sky is clear or mostly clear 38% of the time, partly cloudy 22% of the time, and mostly cloudy or overcast 24% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around October 3, occurring in 60% of days. Precipitation is least likely around October 31, occurring in 52% of days.
Throughout October, the most common forms of precipitation are thunderstorms, moderate rain, and light rain.
Thunderstorms are the most severe precipitation observed during 60% of those days with precipitation. They are most likely around October 1, when it is observed during 41% of all days.
Moderate rain is the most severe precipitation observed during 22% of those days with precipitation. It is most likely around October 31, when it is observed during 16% of all days.
Light rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around October 31, when it is observed during 11% of all days.
Either snow is exceptionally unlikely to fall at this location in October or this station does not reliably report precipitation types.
The relative humidity typically ranges from 66% (mildly humid) to 92% (very humid) over the course of a typical October, rarely dropping below 59% (mildly humid) and reaching as high as 100% (very humid).
The air is driest around October 1, at which time the relative humidity drops below 70% (humid) three days out of four; it is most humid around October 15, 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 October, the dew point typically varies from 71°F (very muggy) to 77°F (oppressive) and is rarely below 68°F (muggy) or above 81°F (very oppressive).
Over the course of October typical wind speeds vary from 0 mph to 16 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 7 mph (light breeze) occurs around October 31, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around October 4, at which time the average daily maximum wind speed is 15 mph (moderate breeze).