Climate and monthly weather forecastRock River, Jamaica
Climate and monthly weather forecast
Weather in January
January, like December, in Rock River, Jamaica, is a moderately hot winter month, with an average temperature ranging between min 20°C (68°F) and max 27.8°C (82°F). Rock River's coldest temperatures are experienced in January, with average high temperatures of 27.8°C (82°F) and lows of 20°C (68°F). In January, the heat index is calculated to be a hot 32°C (89.6°F). Weather in January »Weather in February
February, the last month of the winter in Rock River, is another warm month, with temperature in the range of an average low of 20°C (68°F) and an average high of 28°C (82.4°F). The arrival of February brings an average high-temperature of a still warm 28°C (82.4°F), subtly diverging from January's 27.8°C (82°F). Weather in February »Weather in March
March, the first month of the spring in Rock River, is still a warm month, with an average temperature fluctuating between 20.1°C (68.2°F) and 28.7°C (83.7°F). As February transitions into March, the average high-temperature rests at a still moderately hot 28.7°C (83.7°F), maintaining a close resemblance to the previous month. Weather in March »Weather in April
April, the same as March, is a moderately hot spring month in Rock River, Jamaica, with an average temperature varying between 21°C (69.8°F) and 29.3°C (84.7°F). The onset of April notes an average high-temperature of a still warm 29.3°C (84.7°F), subtly shifted from March's 28.7°C (83.7°F). Weather in April »Weather in May
The last month of the spring, May, is also a moderately hot month in Rock River, Jamaica, with an average temperature fluctuating between 22°C (71.6°F) and 29.6°C (85.3°F). Rock River's May showcases an average high-temperature of a still moderately hot 29.6°C (85.3°F), hardly distinct from April's 29.3°C (84.7°F). Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Rock River, Jamaica, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 22.8°C (73°F). The advent of June reveals an average high-temperature of a hot 30.3°C (86.5°F), showing minimal difference from the prior month. Weather in June »Weather in July
July, like June, is another hot summer month in Rock River, Jamaica, with an average temperature varying between 31°C (87.8°F) and 23.3°C (73.9°F). Rock River, Jamaica, in July witnesses an average high-temperature of a still tropical 31°C (87.8°F), indicating a slight variation from June's 30.3°C (86.5°F). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Rock River, Jamaica, with an average temperature ranging between max 31.1°C (88°F) and min 23.3°C (73.9°F). August, characterized by an average high temperature of 31.1°C (88°F) and a low temperature of 23.3°C (73.9°F), is generally the warmest month. The heat index in August is calculated to be an extremely hot 41°C (105.8°F). Weather in August »Weather in September
September, the first month of the autumn in Rock River, is still a tropical month, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 22.9°C (73.2°F). The average high-temperature during September registers at a still hot 30.4°C (86.7°F), closely corresponding to the preceding month. Weather in September »Weather in October
October, like September, in Rock River, Jamaica, is another warm autumn month, with an average temperature ranging between min 22.5°C (72.5°F) and max 29.5°C (85.1°F). The arrival of October sees an average high-temperature of a moderately hot 29.5°C (85.1°F), hardly diverging from September's 30.4°C (86.7°F). Weather in October »Weather in November
November, the last month of the autumn in Rock River, is also a moderately hot month, with an average temperature fluctuating between 29.1°C (84.4°F) and 21.8°C (71.2°F). The arrival of November brings an average high-temperature of a still moderately hot 29.1°C (84.4°F), nearly identical to October's 29.5°C (85.1°F). Weather in November »Weather in December
The first month of the winter, December, is still a warm month in Rock River, Jamaica, with an average temperature fluctuating between 20.8°C (69.4°F) and 28.3°C (82.9°F). December's weather records an average high-temperature of a still warm 28.3°C (82.9°F), showing little deviation from November. Weather in December »Updated: Jan 31, 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, marked by an average high-temperature of 27.8°C (82°F) and a low-temperature of 20°C (68°F), is the coldest month in Rock River, Jamaica.
The month with the least rainfall is January, when the rain falls for 20.5 days and typically collects 33mm (1.3") of precipitation.
In Rock River, during the entire year, the rain falls for 279.6 days and collects up to 947mm (37.28") of precipitation.
January through April, September through December, with an average maximum UV index of 6, are months with the lowest UV index in Rock River.
The months with the highest UV index in Rock River are May through August, with an average maximum UV index of 7.
June has the longest days of the year, with an average of 13h and 12min of daylight.
With an average relative humidity of 78%, July is the least humid month in Rock River, Jamaica.
Rock River experiences its average highest temperatures in August, reaching a peak of 31.1°C (88°F) and a minimum of 23.3°C (73.9°F).
The month with the most sunshine in Rock River is August, with an average of 11.3h of sunshine.
October is the most humid month, with an average relative humidity of 83%.
October is the month with the most rainfall. Rain falls for 27.5 days and accumulates 147mm (5.79") of precipitation.
October and December, with an average of 6.9h of sunshine, are months with the least sunshine.
December has the shortest days of the year in Rock River, with an average of 11h and 6min of daylight.
Rock River, Jamaica, does not observe Daylight Saving Time (DST). EST timezone is used throughout the entire year.
Average temperature
Rock River, Jamaica
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (27.8°C).
The months with the highest average low temperature are July and August (23.3°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).
Average pressure
Rock River, Jamaica
- Average pressure in January:
1015.4mbar - Average pressure in February:
1015.3mbar - Average pressure in March:
1015.1mbar - Average pressure in April:
1014.1mbar - Average pressure in May:
1013.5mbar - Average pressure in June:
1014mbar
- Average pressure in July:
1014.4mbar - Average pressure in August:
1013.3mbar - Average pressure in September:
1012.2mbar - Average pressure in October:
1011.4mbar - Average pressure in November:
1012.3mbar - Average pressure in December:
1014.3mbar
The month with the highest atmospheric pressure is January (1015.4mbar).
The month with the lowest atmospheric pressure is October (1011.4mbar).
Average wind speed
Rock River, Jamaica
- Average wind speed in January:
8.3km/h - Average wind speed in February:
8.1km/h - Average wind speed in March:
7.8km/h - Average wind speed in April:
7.7km/h - Average wind speed in May:
8.6km/h - Average wind speed in June:
10.3km/h
- Average wind speed in July:
9.7km/h - Average wind speed in August:
8.7km/h - Average wind speed in September:
7.4km/h - Average wind speed in October:
7.2km/h - Average wind speed in November:
6.9km/h - Average wind speed in December:
7.9km/h
The windiest month (with the highest average wind speed) is June (10.3km/h).
The calmest month (with the lowest average wind speed) is November (6.9km/h).
Average humidity
Rock River, Jamaica
The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is July (78%).
Average rainfall
Rock River, Jamaica
The wettest month (with the highest rainfall) is October (147mm).
The driest month (with the least rainfall) is January (33mm).
Average rainfall days
Rock River, Jamaica
- Average rainfall days in January:
20.5 days - Average rainfall days in February:
20.4 days - Average rainfall days in March:
23 days - Average rainfall days in April:
23.9 days - Average rainfall days in May:
26.2 days - Average rainfall days in June:
20.1 days
- Average rainfall days in July:
20.6 days - Average rainfall days in August:
24.8 days - Average rainfall days in September:
25.9 days - Average rainfall days in October:
27.5 days - Average rainfall days in November:
25.1 days - Average rainfall days in December:
21.6 days
The month with the highest number of rainy days is October (27.5 days).
The month with the least rainy days is June (20.1 days).
Average daylight / Average sunshine
Rock River, 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:
7h and 18min - Average sunshine in February:
8h and 54min - Average sunshine in March:
8h and 48min - Average sunshine in April:
10h and 36min - Average sunshine in May:
10h and 36min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
11h and 18min - Average sunshine in September:
11h and 6min - Average sunshine in October:
6h and 54min - Average sunshine in November:
7h and 0min - Average sunshine in December:
6h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The months with the least sunshine are October and December (Average sunshine: 6h and 54min).
Average sunshine days
Rock River, Jamaica
- Average sunshine days in January:
5.3 days - Average sunshine days in February:
3.6 days - Average sunshine days in March:
4.1 days - Average sunshine days in April:
4.4 days - Average sunshine days in May:
2.8 days - Average sunshine days in June:
7.3 days
- Average sunshine days in July:
7.5 days - Average sunshine days in August:
4.6 days - Average sunshine days in September:
2.8 days - Average sunshine days in October:
2.3 days - Average sunshine days in November:
2.6 days - Average sunshine days in December:
4.2 days
The month with the most sunshine days is July (7.5 days).
The month with the least sunshine days is October (2.3 days).
Average UV index
Rock River, Jamaica
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February, March, April, September, October, November and December (UV index 6).
Average cloud cover
Rock River, Jamaica
The month with the most cloud cover is June (Cloud cover 36).
The months with the least cloud cover are March, July, August, September and December (Cloud cover 29).
Average visibility
Rock River, Jamaica
The months with the highest visibility are February, March, April, May, June, July, August, September and November (9km).
The months with the lowest visibility are January, October and December (8km).
