Climate and monthly weather forecastAlston, Jamaica
Climate and monthly weather forecast
Weather in January
January, the same as December, is a moderately hot winter month in Alston, Jamaica, with an average temperature fluctuating between 18.8°C (65.8°F) and 27°C (80.6°F). January, with an average high of 27°C (80.6°F) and a low of 18.8°C (65.8°F), signifies the coldest month of the year. January's average heat index is calculated to be a tropical 30°C (86°F). Weather in January »Weather in February
The last month of the winter, February, is another warm month in Alston, Jamaica, with temperature in the range of an average high of 27.2°C (81°F) and an average low of 18.6°C (65.5°F). The advent of February signifies a minor shift to an average high-temperature of a still moderately hot 27.2°C (81°F), aligning closely with January. Weather in February »Weather in March
The first month of the spring, March, is also a moderately hot month in Alston, Jamaica, with an average temperature fluctuating between 27.6°C (81.7°F) and 18.8°C (65.8°F). Alston experiences a minor change to a still warm 27.6°C (81.7°F) in average high-temperature during March, closely reflecting February. Weather in March »Weather in April
April, like March, in Alston, Jamaica, is another warm spring month, with temperature in the range of an average low of 19.9°C (67.8°F) and an average high of 28.4°C (83.1°F). The advent of April presents an average high-temperature of a still warm 28.4°C (83.1°F), maintaining a close correlation with the preceding month. Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in Alston, Jamaica, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 28.5°C (83.3°F). Alston records an average high-temperature of a still moderately hot 28.5°C (83.3°F) in May, closely mirroring the climate of the previous month. Weather in May »Weather in June
June, the first month of the summer in Alston, is still a warm month, with an average temperature varying between 29.3°C (84.7°F) and 21.4°C (70.5°F). The advent of June signifies a minor shift to an average high-temperature of a still moderately hot 29.3°C (84.7°F), aligning closely with May. Weather in June »Weather in July
July, like June, in Alston, Jamaica, is another warm summer month, with an average temperature varying between 21.8°C (71.2°F) and 29.9°C (85.8°F). The commencement of July introduces an average high-temperature of a still moderately hot 29.9°C (85.8°F), closely mirroring the preceding month. Weather in July »Weather in August
August, the last month of the summer in Alston, is a hot month, with an average temperature varying between 21.9°C (71.4°F) and 30°C (86°F). Alston experiences its highest temperatures in August, with an average peak of 30°C (86°F) and a low of 21.9°C (71.4°F). Throughout August, the heat index is calculated to be a fiery hot 38°C (100.4°F). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Alston, Jamaica, with an average temperature varying between 21.8°C (71.2°F) and 29.3°C (84.7°F). September's arrival brings an average high-temperature of a warm 29.3°C (84.7°F), slightly deviating from August's 30°C (86°F). Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Alston, Jamaica, with an average temperature fluctuating between 28.2°C (82.8°F) and 21.6°C (70.9°F). October's commencement is accompanied by an average high-temperature of a still warm 28.2°C (82.8°F), diverging marginally from September's 29.3°C (84.7°F). Weather in October »Weather in November
November, the last month of the autumn in Alston, is also a moderately hot month, with an average temperature ranging between min 20.5°C (68.9°F) and max 27.9°C (82.2°F). The shift from October to November is characterized by an average high-temperature of a still warm 27.9°C (82.2°F), not significantly different from the 28.2°C (82.8°F) of October. Weather in November »Weather in December
December, the first month of the winter in Alston, is also a moderately hot month, with an average temperature ranging between min 19.6°C (67.3°F) and max 27.1°C (80.8°F). With the start of December, Alston measures an average high-temperature of a still moderately hot 27.1°C (80.8°F), not significantly differing from November's 27.9°C (82.2°F). Weather in December »Updated: Aug 8, 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
Alston experiences its average lowest temperatures in January, reaching a peak of 27°C (80.6°F) and a minimum of 18.8°C (65.8°F).
January is the month with the least rainfall. Rain falls for 22.1 days and accumulates 56mm (2.2") of precipitation.
In Alston, during the entire year, the rain falls for 297.9 days and collects up to 1472mm (57.95") of precipitation.
The months with the lowest humidity are March and July, with an average relative humidity of 81%.
The month with the longest days is June, with an average of 13h and 12min of daylight.
June and July, with an average maximum UV index of 7, are months with the highest UV index.
The months with the most sunshine are July and August, with an average of 10.4h of sunshine.
August stands out as Alston's warmest month, with temperatures ranging between an average high of 30°C (86°F) and a low of 21.9°C (71.4°F).
With an average relative humidity of 87%, October is the most humid month.
The month with the most rainfall is October, when the rain falls for 28.7 days and typically aggregates up to 228mm (8.98") of precipitation.
With an average maximum UV index of 5, October is the month with the lowest UV index.
The month with the least sunshine in Alston is November, with an average of 6.1h of sunshine.
The month with the shortest days in Alston is December, with an average of 11h and 6min of daylight.
Alston does not utilize Daylight Saving Time (DST). EST timezone is used throughout the entire year.
Average temperature
Alston, Jamaica
The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (27°C).
The month with the highest average low temperature is August (21.9°C).
The coldest month (with the lowest average low temperature) is February (18.6°C).
Average pressure
Alston, Jamaica
- Average pressure in January:
1015.5mbar - Average pressure in February:
1015.3mbar - Average pressure in March:
1015.1mbar - Average pressure in April:
1014.1mbar - Average pressure in May:
1013.4mbar - Average pressure in June:
1013.9mbar
- Average pressure in July:
1014.4mbar - Average pressure in August:
1013.2mbar - Average pressure in September:
1012.2mbar - 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
Alston, Jamaica
- Average wind speed in January:
7.5km/h - Average wind speed in February:
7.3km/h - Average wind speed in March:
6.8km/h - Average wind speed in April:
6.7km/h - Average wind speed in May:
7.9km/h - Average wind speed in June:
9.4km/h
- Average wind speed in July:
8.4km/h - Average wind speed in August:
7.8km/h - Average wind speed in September:
6.6km/h - Average wind speed in October:
6.6km/h - Average wind speed in November:
6.2km/h - Average wind speed in December:
7.3km/h
The windiest month (with the highest average wind speed) is June (9.4km/h).
The calmest month (with the lowest average wind speed) is November (6.2km/h).
Average humidity
Alston, Jamaica
The month with the highest relative humidity is October (87%).
The months with the lowest relative humidity are March and July (81%).
Average rainfall
Alston, Jamaica
- Average rainfall in January:
56mm - Average rainfall in February:
57mm - Average rainfall in March:
90mm - Average rainfall in April:
127mm - Average rainfall in May:
174mm - Average rainfall in June:
94mm
- Average rainfall in July:
117mm - Average rainfall in August:
145mm - Average rainfall in September:
190mm - Average rainfall in October:
228mm - Average rainfall in November:
129mm - Average rainfall in December:
65mm
The wettest month (with the highest rainfall) is October (228mm).
The driest month (with the least rainfall) is January (56mm).
Average rainfall days
Alston, Jamaica
- Average rainfall days in January:
22.1 days - Average rainfall days in February:
22 days - Average rainfall days in March:
25.1 days - Average rainfall days in April:
25.4 days - Average rainfall days in May:
27.7 days - Average rainfall days in June:
21.1 days
- Average rainfall days in July:
23.4 days - Average rainfall days in August:
25.2 days - Average rainfall days in September:
27.3 days - Average rainfall days in October:
28.7 days - Average rainfall days in November:
26 days - Average rainfall days in December:
23.9 days
The month with the highest number of rainy days is October (28.7 days).
The month with the least rainy days is June (21.1 days).
Average daylight / Average sunshine
Alston, 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 48min - Average sunshine in February:
7h and 42min - Average sunshine in March:
7h and 36min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 18min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 48min - Average sunshine in October:
6h and 18min - Average sunshine in November:
6h and 6min - Average sunshine in December:
6h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 6min).
Average sunshine days
Alston, Jamaica
- Average sunshine days in January:
5.6 days - Average sunshine days in February:
3.7 days - Average sunshine days in March:
3.1 days - Average sunshine days in April:
3.3 days - Average sunshine days in May:
2.3 days - Average sunshine days in June:
7.6 days
- Average sunshine days in July:
5.3 days - Average sunshine days in August:
5.2 days - Average sunshine days in September:
1.9 days - Average sunshine days in October:
2.1 days - Average sunshine days in November:
1.9 days - Average sunshine days in December:
3.7 days
The month with the most sunshine days is June (7.6 days).
The months with the least sunshine days are September and November (1.9 days).
Average UV index
Alston, Jamaica
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is October (UV index 5).
Average cloud cover
Alston, Jamaica
The months with the most cloud cover are May and November (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility
Alston, Jamaica
The months with the highest visibility are March, June, July and August (8km).
The months with the lowest visibility are November and December (6km).
