Climate and monthly weather forecastCat Island, The Bahamas
Climate and monthly weather forecast
The climate of Cat Island
Cat Island, located in The Bahamas, is classified under the Köppen climate system as an Aw climate, or Tropical wet and dry, due to contrasting wet and dry seasons throughout the year. The parameters dictating the island's climate are the high temperatures throughout the year with a slight variation, changes in rainfall distribution and sea temperature, length of daylight hours and hours of sunshine, coupled with the UV index level.Common features of this climatic zone resonate in the island's weather as warmth pervades all year round. The range of high temperatures shifts from 25°C (77°F) at the beginning of the year to reach an apex at 31°C (87.8°F) from July to September and recedes to 26°C (78.8°F) again by December. The low temperatures follow the similar pattern starting from 18°C (64.4°F), rising to 25°C (77°F) in the middle of the year and dipping back to 19°C (66.2°F). These conditions provide a consistently tropical climate, easing into more heated months in the July-September period.
Rainfall distribution shows fluctuations across the year. Annually, maximum rainfall is recorded in October with 184mm (7.24") spread over 20 days with the rain becoming less pronounced in drought months from February to April, bottoming out at 25mm (0.98") in March. This varying rainfall together with sunshine hours, which span from 6 to 8 hours daily, generate an intriguing rhythm in weather dynamics.
Additionally, sunshine on Cat Island ranges from 6 to 8 hours daily. Sea temperature sustains a warm profile from 24°C (75.2°F) to 29°C (84.2°F) annually. This warmth is emphasised by UV indexes that span from 6 to 12, indicating a high level of solar radiation. This trend identifies periods of intensified sunshine and heat, particularly from June to August.
The best time to visit Cat Island
Factoring in parameters such as temperature, sunshine hours, sea temperature, and the least rainfall, the prime time to visit Cat Island would be from February to April. During this span, rainfall is at its lowest, peaking at 39mm (1.54") in April, resulting in fewer rainy days. As expected with a tropical climate, the days are warm with high temperatures from 26°C (78.8°F) to 27°C (80.6°F), and night temperatures between 19°C (66.2°F) and 20°C (68°F). Sunshine hours climb to 8 hours, illuminating the island with pleasant sunlight. The sea temperature maintains a steady warmth at 24°C (75.2°F) to 25°C (77°F), making this window ideal for beach and water-related activities.The worst time to visit Cat Island
Based on weather conditions, the least inviting time to visit Cat Island falls between September and October. During these months, the island experiences its highest rainfall of 118mm (4.65") to 184mm (7.24") respectively, increasing the number of rainy days to 20. Night temperatures can go as high as 24°C (75.2°F) to 25°C (77°F), making for uncomfortable sleeping conditions. Although the sea temperature reaches a peak of 29°C (84.2°F) in this period offering warm sea baths, the heavy rainfall can deter outdoor activities.Spring weather in Cat Island
Spring ushers in the drier and less humid half of the year on Cat Island. In this season, stretching from March to May, rainfall is fairly limited. The rain increases from a low of 25mm (0.98") in March to 39mm (1.54") in April, and then surges to 101mm (3.98") in May. Corresponding to this, the number of rainy days jumps from 9 to 14. The high temperatures in spring linger around 26°C (78.8°F) to 29°C (84.2°F), whereas the low temperatures gradually rise from 19°C (66.2°F) to 22°C (71.6°F). The warming sea temperatures from 24°C (75.2°F) to 26°C (78.8°F) provide ideal conditions for water activities.Summer weather in Cat Island
Summer in Cat Island, comprising June to August, has higher temperatures and increased rainfall. High temperatures sit between 30°C (86°F) and 31°C (87.8°F) and low temperatures oscillate between 24°C (75.2°F) and 25°C (77°F). Rainfall ranges from 63mm (2.48") to 102mm (4.02"), and the number of rainy days hikes up to 19-20. Despite these scaled-up rain levels, the sunshine hours hold steady at 8, and the sea temperature peaks at 29°C (84.2°F), making this a viable period for beach visits.Autumn weather in Cat Island
Autumn, from September to November, is marked by the highest rainfall and lower temperatures. Rainfall peaks in October at 184mm (7.24"), resulting in 20 rainy days. The region also sees less daylight, around 11 to 12 hours daily. High temperatures ease from 29°C (84.2°F) to 27°C (80.6°F), and low temperatures scale down from 23°C (73.4°F) to 21°C (69.8°F). Sea temperature remains warm at 29°C (84.2°F) to 27°C (80.6°F), making it suitable for those who love warm water.Winter weather in Cat Island
Winter season from December to February in Cat Island manifests mild temperatures and reduced rainfall. The high temperatures hover between 25°C (77°F) and 26°C (78.8°F), whereas low temperatures range from 18°C (64.4°F) to 19°C (66.2°F). Rainfall is at its lowest for the year during this season, bottoming out to 37mm (1.46") in February. Correspondingly, the number of rainy days involves 9 to 11 days. While the sea temperature dips to 24°C (75.2°F) to 25°C (77°F), swimming is still a viable option for holidaymakers who can handle slightly chillier waters.Weather in January
Weather trends at the beginning of the year in Cat Island, The Bahamas highlight the region's tropical climate. Warm temperatures prevail, with the daily highs and lows registering at a quite consistent 25°C (77°F) and 18°C (64.4°F) respectively. Weather in January »Weather in February
February in Cat Island sees a continuation of the temperate weather patterns observed in January. Sunshine hours remain constant at 7 hours per day, as UV index gradually rises to 8. Coastal activities become more favorable with the sea temperature also on a subtle rise. Weather in February »Weather in March
Transitioning into March, the weather patterns on Cat Island slowly shift towards the warmer spectrum. While the daily high remains unchanged at 25°C (77°F), the daily low increases by one notch to 19°C (66.2°F). As the tropics greet the spring, rainfall shows a decrease, registering at 25mm (0.98") throughout the month. Weather in March »Weather in April
April ushers in a slightly more active weather scene in Cat Island. Daily high temperatures see an increase to 27°C (80.6°F), while the lows remain persistently warm, like in the previous months. Sea temperature also assumes an upward trend, making water activities more enticing. Weather in April »Weather in May
May marks the beginning of a more active period on Cat Island with increased rainfall and longer daylight hours. While rainfall doubles from the previous month to reach 101mm (3.98"), warmer temperatures ensure a comfortable environment. Weather in May »Weather in June
As summer begins in June, Cat Island experiences its warmest weather with temperatures peaking at 30°C (86°F). The month welcomes the most extensive period of daylight, spanning 13.6 hours per day. Due to the increase in humidity, the number of rainy days also increases, providing brief respite from the heat. Weather in June »Weather in July
July replicates June's weather pattern, as high temperatures continue to dominate Cat Island. Daily temperatures soar to 31°C (87.8°F) while the sea shares similar warmth. Rainfall reduces somewhat to 63mm (2.48") but is spread over more days than in previous months. Weather in July »Weather in August
August brings in subtle changes to Cat Island, maintaining its warm, tropical climate. The increase in the number of rainy days is offset by a light rise in rainfall levels to 102mm (4.02"). Long daylight hours remain relatively unchanged to provide an extended time for outdoor engagements. Weather in August »Weather in September
September ushers a slight drop in daily high temperatures to 31°C (87.8°F), offering mild relief from the warm summer months in Cat Island. Precipitation increases to a notable 118mm (4.65"), remaining distributed equally across 20 days. Weather in September »Weather in October
October in Cat Island introduces a significant change with the highest rainfall of 184mm (7.24"), marking the arrival of the wet season. The frequency of rainy days remains consistent at 20 spanning the month. As daylight shortens slightly, sun exposure reduces to 7 hours per day, and the UV index finally drops to 9. Weather in October »Weather in November
Weather patterns in November feature a reduction in rainfall to 70mm (2.76") as Cat Island transitions from the wet to the cooler season. A dip in daily high temperatures to 27°C (80.6°F) brings about an early sense of winter's approach. Weather in November »Weather in December
December signals the onset of winter in Cat Island, with average high temperatures dipping to 26°C (78.8°F). This change accompanies the shortest daylight span of the year, counting 10.7 hours. Appreciable rainfall of 47mm (1.85") is spread across 11 days, maintaining the tropical appeal of the island. Weather in December »Updated: Jan 30, 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
Temperatures reach their minimum during January and February, recording an average high-temperature of 25°C (77°F).
In Cat Island, during the entire year, the rain falls for 170 days and collects up to 950mm (37.4") of precipitation.
January and December, with an average maximum UV index of 6, are months with the lowest UV index in Cat Island.
February and March, with an average sea temperature of 24°C (75.2°F), are months with the coldest seawater.
March is the month with the least rainfall in Cat Island, The Bahamas. Rain falls for 9 days and accumulates 25mm (0.98") of precipitation.
On Sunday, 10. March 2024, at 02:00, Daylight Saving Time starts in Cat Island, The Bahamas, and the time zone changes from EST to EDT. Daylight Saving Time ends on Sunday, 03. November 2024, at 02:00, and the time zone reverts from EDT to EST.
The months with the most sunshine are March through May, July and August, with an average of 8h of sunshine.
With an average of 13h and 36min of daylight, June has the longest days of the year in Cat Island.
The months with the highest UV index are June and July, with an average maximum UV index of 12.
July through September mark Cat Island's peak of temperatures, averaging a high-temperature of 31°C (87.8°F).
July through September, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Cat Island.
October is the month with the most rainfall in Cat Island, The Bahamas. Rain falls for 20 days and accumulates 184mm (7.24") of precipitation.
The month with the shortest days is December, with an average of 10h and 42min of daylight.
With an average of 6h of sunshine, December has the least sunshine of the year in Cat Island, The Bahamas.
Average temperature
Cat Island, The Bahamas
The warmest months (with the highest average high temperature) are July, August and September (31°C).
The months with the lowest average high temperature are January and February (25°C).
The months with the highest average low temperature are July and August (25°C).
The coldest month (with the lowest average low temperature) is January (18°C).
Average rainfall
Cat Island, The Bahamas
- Average rainfall in January:
39mm - Average rainfall in February:
37mm - Average rainfall in March:
25mm - Average rainfall in April:
39mm - Average rainfall in May:
101mm - Average rainfall in June:
125mm
The wettest month (with the highest rainfall) is October (184mm).
The driest month (with the least rainfall) is March (25mm).
Average rainfall days
Cat Island, The Bahamas
- Average rainfall days in January:
11 days - Average rainfall days in February:
9 days - Average rainfall days in March:
9 days - Average rainfall days in April:
8 days - Average rainfall days in May:
14 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
19 days - Average rainfall days in August:
20 days - Average rainfall days in September:
20 days - Average rainfall days in October:
20 days - Average rainfall days in November:
12 days - Average rainfall days in December:
11 days
The months with the highest number of rainy days are August, September and October (20 days).
The month with the least rainy days is April (8 days).
Average sea temperature
Cat Island, The Bahamas
The best months for swimming (with the highest average sea temperature) are July, August and September (29°C).
The coldest months (with the lowest average sea temperature) are February and March (24°C).
Average daylight / Average sunshine
Cat Island, The Bahamas
- Average daylight in January:
10h and 48min - Average daylight in February:
11h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 18min - Average daylight in June:
13h and 36min
- Average daylight in July:
13h and 30min - Average daylight in August:
13h and 0min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 0min - Average daylight in December:
10h and 42min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).
The months with the most sunshine are March, April, May, July and August (Average sunshine: 8h).
The month with the least sunshine is December (Average sunshine: 6h).
Average UV index
Cat Island, The Bahamas
The months with the highest UV index are June and July (UV index 12).
The months with the lowest UV index are January and December (UV index 6).
