Climate and monthly weather forecastBlack River, Jamaica
Climate and monthly weather forecast
The climate of Black River
Located in Black River, Jamaica, this climate is defined predominantly as a tropical wet and dry or savanna type, according to the Köppen climate classification. This geographical region experiences consistent high temperatures, marked humidity, and substantial rainfall throughout the year.Temperature highs ordinarily fluctuate from a balmy 27°C (80.6°F) to a warm 30°C (86°F), showing only a slight increase during the hotter months of the year. Similarly, the lows exhibit limited variance, ranging from a mild 18.6°C (65.5°F) to a more temperate 21.9°C (71.4°F). This small gap in temperatures underscores the consistent warmth of the region.
According to the data, significant rainfall dominates most months, peaking in October with 228mm (8.98"). The number of rainy days follows a similar pattern, reaching more than three quarters of the month during some periods. Despite the prevalence of rain, the region also enjoys a generous amount of sunshine, ranging from 6.1 hours to 10.4 hours per day, the longest being in July and August.
Unique weather patterns in Black River include a sea temperature that stays comfortably warm, fluctuating from 26.9°C (80.4°F) to 29.8°C (85.6°F) over the year. In terms of wind, the region experiences gentle breezes that range from 6.2km/h (3.9mph) to 9.4km/h (5.8mph), with gusts reaching up to 13.9km/h (8.6mph).
The best time to visit Black River
What makes a time perfect for a visit fundamentally depends on personal weather preferences. For those who enjoy basking in as much sunshine as possible, visiting during the months of July and August would be ideal as they come with up to 10.4 hours of sunlight per day. Additionally, these months bring the highest sea temperatures of the year, with a peak at 29.7°C (85.5°F) in August, making swimming particularly enjoyable.The worst time to visit Black River
For travelers seeking to avoid the wettest weather, the end of the year might be less appealing. The months from September to November prove to be the wettest, as rainfall measures from 190mm (7.48") to a maximum of 228mm (8.98") in October. Correspondingly, the number of rainy days in November is high with a total of 28.7 days.Spring weather in Black River
The spring season reveals slightly increasing temperatures in Black River, with highs reaching up to 28.5°C (83.3°F) in May and lows from 18.8°C (65.8°F) in March to a warmer 20.8°C (69.4°F) in May. Rainfall tends to intensify over this period, with a total of 174mm (6.85") in May. These months also come with an average 81% to 84% relative humidity, ensuring a humid spring season.Summer weather in Black River
Summers offer the warmest months, with temperature highs rising to 30°C (86°F) in August. Correspondingly, the lows increase to an average of 21.4°C (70.5°F) in June to 21.9°C (71.4°F) in August. Rainfall drops in June to 94mm (3.7") but rises in July and August, reaching 145mm (5.71"). Moreover, the summer months receive the most hours of sunshine, reaching a peak of 10.4 hours per day in July and August.Autumn weather in Black River
Autumn sees a decrease in temperature highs from 29.3°C (84.7°F) in September to 27.9°C (82.2°F) in November, with lows falling to a cooler 21.6°C (70.9°F) in October to 20.5°C (68.9°F) in November. Rainfall peaks in October with a total of 228mm (8.98"), signifying the wettest period of the year. The hours of daylight and sunshine decrease over this period, with just 6.1 hours of sunshine per day in November.Winter weather in Black River
Winter months are generally warm, with temperature highs ranging from 27.1°C (80.8°F) in December to 27.2°C (81°F) in February, and lows at 19.6°C (67.3°F) in December to 18.6°C (65.5°F) in February. Rainfall remains moderate during this period, with a dip to 65mm (2.56") in December and a modest increase to 90mm (3.54") in February. The winter period in Black River is characterized by a decrease in daily sunshine hours with 6.3 hours in December, increasing slightly to 7.7 hours in February.Weather in January
The starting month of the year sees relatively cooler temperatures, falling between 18.8°C (65.8°F) and 27°C (80.6°F). In persistent rain spells, Black River encounters moderate humidity, resulting in frequent rainfall. Ocean temperatures are only a tad warmer, with comfortable sea temperatures that also invite holiday tourists. Weather in January »Weather in February
February experiences a marginal surge in most weather patterns from the previous month. With temperatures ranging from 18.6°C (65.5°F) to a high of 27.2°C (81°F), the weather remains somewhat stable. The humidity levels stand firm with unchanged wind speeds, offering a predictable weather pattern for residents and travellers alike. Weather in February »Weather in March
Leading into spring, the weather in March demonstrates a slight increase from the temperatures of February. Temperatures vary from a balmy 18.8°C (65.8°F) to a slightly warmer peak of 27.6°C (81.7°F). However, the stand-out fluctuation is the significant rise in the month's rainfall, reaching 90mm (3.54"), a clear escalation from the previous month. Weather in March »Weather in April
As April brings in the true start of the warmer months, with a noticeable increase in temperature from 19.9°C (67.8°F) to 28.4°C (83.1°F). Black River continues to be enveloped in humidity, fostering an increase in rainfall to 127mm (5"). Weather in April »Weather in May
In May, the pre-summer warm up is evident in Black River. Temperatures rise from 20.8°C (69.4°F), reaching a new high of 28.5°C (83.3°F). A distinguishing feature of this month is the sudden sharp surge in rainfall, escalating to a hefty 174mm (6.85"). Weather in May »Weather in June
June marks the beginning of summer in Black River with temperatures increasing from 21.4°C (70.5°F) to a very warm 29.3°C (84.7°F). This change also paves the way for an equally remarkable amplification of the sea temperature. Weather in June »Weather in July
The heart of summer is in July, which contains the highest temperatures of the year in Black River ranging from 21.8°C (71.2°F) up to a melting point of 30°C (86°F). The influence of these high temperatures is subtly reflected in the humidity and sea temperature. Weather in July »Weather in August
August continues to ride the wave of high summer temperatures, sticking to a band between 21.9°C (71.4°F) and unchanged 30°C (86°F). Notably, the sea temperature rises to its peak, making it a great time for water enthusiasts. Weather in August »Weather in September
September in Black River experiences the last phase of the tropical heat, with temperatures sliding from their absolute peak to a still warm range of 21.8°C (71.2°F) to 29.3°C (84.7°F). Rainfall provides the stark contrast to the receding heat, receiving its annual peak at 190mm (7.48"). Weather in September »Weather in October
The transitional month of October brings temperatures further down, falling from 21.6°C (70.9°F) to 28.2°C (82.8°F). The rainfall maintains its intensity, even extending its lead to reach the highest level of the year at 228mm (8.98"), signifying the peak of the rainy season. Weather in October »Weather in November
In November, Black River's temperatures ease into a slacker range of 20.5°C (68.9°F) to 27.9°C (82.2°F). While rainfall lessens from its October peak, it still registers a high reading of 129mm (5.08"). The reduction of daylight hours becomes more substantial, in sync with the cooling temperature trend. Weather in November »Weather in December
The cold month of December presents a contrast to the rest of the year with temperatures acquiring a winter range, from a cool 19.6°C (67.3°F) to a moderate 27.1°C (80.8°F). Rainfall significantly drops to 65mm (2.56"), contributing to the chillier outlook. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Black River, 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
Black River, 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
Black River, 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
Black River, 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
Black River, 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
Black River, 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 sea temperature
Black River, Jamaica
The best month for swimming (with the highest average sea temperature) is September (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).
Average daylight / Average sunshine
Black 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:
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
Black River, 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
Black River, 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
Black River, 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
Black River, 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).





