This report describes the typical weather at the Owen Roberts International Airport (Georgetown, Cayman Islands) weather station over the course of an average June. It is based on the historical records from 1989 to 2012. Earlier records are either unavailable or unreliable.
Georgetown has a tropical savanna climate with dry winters. The area within 25 mi of this station is covered by oceans and seas (96%) and forests (2%).
The month of June is characterized by essentially constant daily high temperatures, with daily highs around 88°F throughout the month, exceeding 90°F or dropping below 85°F only one day in ten.
Over the course of June, the length of the day is essentially constant. The shortest day of the month is June 2 with 13:13 hours of daylight; the longest day is June 18 with 13:17 hours of daylight.
The earliest sunrise is at 5:46am on June 6; the latest sunset is at 7:07pm on June 27; the latest sunrise is at 5:51am on June 30; the earliest sunset is at 7:00pm on June 1.
Daylight savings time (DST) is not observed in 2012.
The median cloud cover is 54% (partly cloudy) and does not vary substantially over the course of the month.
On June 15, a representative day, the sky is clear or mostly clear 17% of the time, partly cloudy 15% of the time, and mostly cloudy or overcast 22% of the time.
The average probability that some form of precipitation will be observed in a given day is 41%, with little variation over the course of the month.
Throughout June, the most common forms of precipitation are thunderstorms, light rain, and moderate rain.
Thunderstorms are the most severe precipitation observed during 44% of those days with precipitation. They are most likely around June 30, when it is observed during 23% of all days.
Light rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around June 1, when it is observed during 13% of all days.
Moderate rain is the most severe precipitation observed during 26% of those days with precipitation. It is most likely around June 2, when it is observed during 12% of all days.
Either snow is exceptionally unlikely to fall at this location in June or this station does not reliably report precipitation types.
The relative humidity typically ranges from 66% (mildly humid) to 91% (very humid) over the course of a typical June, rarely dropping below 61% (mildly humid) and reaching as high as 98% (very humid).
The air is driest around June 30, at which time the relative humidity drops below 70% (humid) three days out of four; it is most humid around June 6, 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 June, the dew point typically varies from 74°F (very muggy) to 79°F (oppressive) and is rarely below 72°F (very muggy) or above 81°F (very oppressive).
Over the course of June typical wind speeds vary from 5 mph to 15 mph (light breeze to moderate breeze), rarely exceeding 20 mph (fresh breeze).
The highest average wind speed of 10 mph (gentle breeze) occurs around June 30, at which time the average daily maximum wind speed is 15 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around June 3, at which time the average daily maximum wind speed is 14 mph (moderate breeze).