Climate and monthly weather forecastCastleton, Jamaica
Climate and monthly weather forecast
Weather in January
January, the same as December, is another warm winter month in Castleton, Jamaica, with an average temperature fluctuating between 20.5°C (68.9°F) and 28.4°C (83.1°F). In Castleton, the lowest temperatures are generally noted in January, averaging a high of 28.4°C (83.1°F) and a low of 20.5°C (68.9°F). January's average heat index is computed to be a hot 33°C (91.4°F). Weather in January »Weather in February
February, the last month of the winter in Castleton, is another warm month, with an average temperature ranging between min 20.6°C (69.1°F) and max 28.8°C (83.8°F). February's commencement is accompanied by an average high-temperature of a still moderately hot 28.8°C (83.8°F), diverging marginally from January's 28.4°C (83.1°F). Weather in February »Weather in March
March, the first month of the spring in Castleton, is also a moderately hot month, with an average temperature ranging between max 29°C (84.2°F) and min 20.7°C (69.3°F). Castleton's entry into March measures an average high-temperature of a still moderately hot 29°C (84.2°F), closely parallel to the preceding month. Weather in March »Weather in April
April, like March, in Castleton, Jamaica, is a moderately hot spring month, with an average temperature fluctuating between 29.9°C (85.8°F) and 21.7°C (71.1°F). The onset of April brings an average high-temperature of a still warm 29.9°C (85.8°F), nearly matching the March temperature. Weather in April »Weather in May
May, the last month of the spring in Castleton, is a hot month, with an average temperature varying between 30.3°C (86.5°F) and 22.5°C (72.5°F). The advent of May denotes an average high-temperature of a hot 30.3°C (86.5°F), subtly different from April's 29.9°C (85.8°F). Weather in May »Weather in June
The first month of the summer, June, is still a hot month in Castleton, Jamaica, with an average temperature fluctuating between 30.8°C (87.4°F) and 23°C (73.4°F). The arrival of June marks a slight shift to an average high-temperature of a still hot 30.8°C (87.4°F) from May's 30.3°C (86.5°F). Weather in June »Weather in July
July, like June, is another tropical summer month in Castleton, Jamaica, with an average temperature ranging between min 23.5°C (74.3°F) and max 31.7°C (89.1°F). The warmest period falls in July and August, when the average high-temperature reaches 31.7°C (89.1°F). In July, the heat index is computed to be a scorching 42°C (107.6°F). Weather in July »Weather in August
August, the last month of the summer in Castleton, is also a hot month, with an average temperature varying between 23.8°C (74.8°F) and 31.7°C (89.1°F). The warmest period, with an average high-temperature of 31.7°C (89.1°F), falls in July and August. August's heat index is computed to be a scorching 42°C (107.6°F). Weather in August »Weather in September
The first month of the autumn, September, is still a hot month in Castleton, Jamaica, with temperature in the range of an average high of 31.4°C (88.5°F) and an average low of 23.3°C (73.9°F). Shifting into September, Castleton records an average high-temperature of a still hot 31.4°C (88.5°F), presenting minor fluctuations compared to the previous month. Weather in September »Weather in October
October, the same as September, in Castleton, Jamaica, is a hot autumn month, with an average temperature fluctuating between 30.3°C (86.5°F) and 23.1°C (73.6°F). Castleton ushers in October with an average high-temperature of a still tropical 30.3°C (86.5°F), showing a close resemblance to the previous month. Weather in October »Weather in November
November, the last month of the autumn in Castleton, is another warm month, with an average temperature fluctuating between 29.7°C (85.5°F) and 22.5°C (72.5°F). Castleton's transition from October to November introduces an average high-temperature of a warm 29.7°C (85.5°F), marking an insignificant variation from the 30.3°C (86.5°F). Weather in November »Weather in December
The first month of the winter, December, is also a moderately hot month in Castleton, Jamaica, with an average temperature varying between 28.9°C (84°F) and 21.5°C (70.7°F). A minimal variation is noted in Castleton's average high-temperature at the onset of December, reaching a still moderately hot 28.9°C (84°F) from November's 29.7°C (85.5°F). Weather in December »Updated: Jul 19, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the month when Castleton experiences its coldest temperatures, averaging a high of 28.4°C (83.1°F) and a low of 20.5°C (68.9°F).
January is the month with the least rainfall. Rain falls for 19.4 days and accumulates 26mm (1.02") of precipitation.
In Castleton, during the entire year, the rain falls for 265.1 days and collects up to 806mm (31.73") of precipitation.
The months with the lowest UV index are January through April, September, November and December, with an average maximum UV index of 6.
March, July and August, with an average relative humidity of 77%, are the least humid months.
May through August and October, with an average maximum UV index of 7, are months with the highest UV index.
With an average of 13h and 12min of daylight, June has the longest days of the year.
Castleton's average highest temperatures are recorded in July and August, reaching a high of 31.7°C (89.1°F).
The month with the most sunshine is August, with an average of 11h of sunshine.
The months with the highest humidity are October through December, with an average relative humidity of 81%.
The month with the most rainfall is October, when the rain falls for 26.5 days and typically aggregates up to 123mm (4.84") of precipitation.
With an average of 11h and 6min of daylight, December has the shortest days of the year.
Castleton does not utilize Daylight Saving Time (DST). EST timezone is used over the entire year.
With an average of 6.7h of sunshine, December has the least sunshine of the year in Castleton.
Average temperature
Castleton, Jamaica
The warmest months (with the highest average high temperature) are July and August (31.7°C).
The month with the lowest average high temperature is January (28.4°C).
The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (20.5°C).
Average pressure
Castleton, Jamaica
- Average pressure in January:
1015.5mbar - Average pressure in February:
1015.4mbar - Average pressure in March:
1015.2mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1013.6mbar - Average pressure in June:
1014.1mbar
- Average pressure in July:
1014.6mbar - Average pressure in August:
1013.4mbar - Average pressure in September:
1012.3mbar - Average pressure in October:
1011.5mbar - Average pressure in November:
1012.4mbar - Average pressure in December:
1014.4mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is October (1011.5mbar).
Average wind speed
Castleton, Jamaica
- Average wind speed in January:
7.8km/h - Average wind speed in February:
7.6km/h - Average wind speed in March:
7.4km/h - Average wind speed in April:
7.3km/h - Average wind speed in May:
7.8km/h - Average wind speed in June:
9km/h
- Average wind speed in July:
8.8km/h - Average wind speed in August:
7.8km/h - Average wind speed in September:
6.8km/h - Average wind speed in October:
6.7km/h - Average wind speed in November:
6.6km/h - Average wind speed in December:
7.3km/h
The windiest month (with the highest average wind speed) is June (9km/h).
The calmest month (with the lowest average wind speed) is November (6.6km/h).
Average humidity
Castleton, Jamaica
The months with the highest relative humidity are October, November and December (81%).
The months with the lowest relative humidity are March, July and August (77%).
Average rainfall
Castleton, Jamaica
The wettest month (with the highest rainfall) is October (123mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days
Castleton, Jamaica
- Average rainfall days in January:
19.4 days - Average rainfall days in February:
19.2 days - Average rainfall days in March:
20.7 days - Average rainfall days in April:
21.9 days - Average rainfall days in May:
25.4 days - Average rainfall days in June:
20.5 days
- Average rainfall days in July:
21.2 days - Average rainfall days in August:
24.9 days - Average rainfall days in September:
23.1 days - Average rainfall days in October:
26.5 days - Average rainfall days in November:
22.4 days - Average rainfall days in December:
19.9 days
The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is February (19.2 days).
Average daylight / Average sunshine
Castleton, Jamaica
- Average daylight in January:
11h and 12min - Average daylight in February:
11h and 36min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 36min - Average daylight in May:
13h and 0min - Average daylight in June:
13h and 12min
- Average daylight in July:
13h and 6min - Average daylight in August:
12h and 42min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 42min - Average daylight in November:
11h and 18min - Average daylight in December:
11h and 6min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in January:
6h and 54min - Average sunshine in February:
8h and 36min - Average sunshine in March:
8h and 30min - Average sunshine in April:
10h and 24min - Average sunshine in May:
10h and 24min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
11h and 0min - Average sunshine in September:
10h and 54min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 48min - Average sunshine in December:
6h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days
Castleton, Jamaica
- Average sunshine days in January:
6 days - Average sunshine days in February:
3.4 days - Average sunshine days in March:
5.8 days - Average sunshine days in April:
4.4 days - Average sunshine days in May:
2.6 days - Average sunshine days in June:
3.5 days
- Average sunshine days in July:
3 days - Average sunshine days in August:
1.7 days - Average sunshine days in September:
1.7 days - Average sunshine days in October:
1.5 days - Average sunshine days in November:
3.6 days - Average sunshine days in December:
4.6 days
The month with the most sunshine days is January (6 days).
The month with the least sunshine days is October (1.5 days).
Average UV index
Castleton, Jamaica
The months with the highest UV index are May, June, July, August and October (UV index 7).
The months with the lowest UV index are January, February, March, April, September, November and December (UV index 6).
Average cloud cover
Castleton, Jamaica
The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Castleton, Jamaica
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
