Climate and monthly weather forecastGun Bay, Cayman Islands
Climate and monthly weather forecast
The climate of Gun Bay
Gun Bay, located in the Cayman Islands, is characterized by a tropical wet and dry, or savanna, climate according to the Köppen climate classification, also known as Aw. This tropical climate is marked by high temperatures throughout the year, with slight fluctuations, and significant variation in the precipitation rates.The climate data indicates a consistent range of average high temperatures from 26.2°C (79.2°F) to 29.7°C (85.5°F) throughout the year, with the warmest periods being from May to September. Conversely, the average low temperatures exhibit a similar pattern, ranging from 24.9°C (76.8°F) to 28.6°C (83.5°F), indicating generally warm nights throughout the year. In terms of humidity, relatively high levels are consistent across all months, fluctuating between 74% and 79%.
As for rainfall, it shows considerable variation, with the highest average precipitation of 159mm (6.26") occurring in October and the lowest, 24mm (0.94"), in March. The number of rainfall days also varies, reaching a peak of approximately 26.5 days in October and descending to around 16 days in March. Interestingly, October is the cloudiest month, given its 37% cloud coverage.
Pressure values oscillate between 1011.7mb and 1016.3mb, providing a stable atmospheric environment for most of the year. Wind speeds display minor fluctuations, with a maximum average of 26.4km/h (16.4mph) in December and a minimum average of 17.2km/h (10.7mph) in September.
The best time to visit Gun Bay
Considering weather conditions, the ideal time to visit Gun Bay emerges between March and May. This period presents an agreeable balance of warmth, with average high temperatures between 26.3°C (79.3°F) to 28°C (82.4°F), and lower rainfall measures from 24mm (0.94") to 36mm (1.42"). Despite higher relative humidity, at approximately 76% to 77%, these favorable conditions are complemented by relatively long daylight hours, 12 to 13.1 hours, enhancing the overall experience.The worst time to visit Gun Bay
On the other hand, October emerges as a less optimal period for visiting Gun Bay. This month is characterized by the highest rainfall volume of 159mm (6.26"), coupled with the greatest number of rainy days, around 26.5. Additionally, it shows a low daily sunshine duration of 7.4 hours, contributing to significant cloud cover of approximately 37%, reducing visibility and making it inconvenient for outdoor activities.Spring weather in Gun Bay
Springtime in Gun Bay, considered to be from March to May, boasts a primarily tropical climate. Consistent average high temperatures of 26.3°C (79.3°F) to 28°C (82.4°F) underscore the region's warmth. Rainfall is relatively moderate, especially in March, which experiences the lowest average precipitation of 24mm (0.94"). The number of sunny hours extends for a substantial part of the day, with a peak of 10.6 hours of sunshine in May.Summer weather in Gun Bay
Summer, from June to August, elevates the heat in Gun Bay further, with average high temperatures ascending from 28.8°C (83.8°F) in June to 29.7°C (85.5°F) in August. Despite this, the average low temperatures remain agreeable, hovering around a comfortable 27.8°C (82°F) to 28.6°C (83.5°F). Rainfall increases slightly during these months, rising to 81mm (3.19") in August. However, generous sunshine and extended daylight hours maintain the summer charm.Autumn weather in Gun Bay
Autumn in Gun Bay, from September to November, sees some of the year's highest temperatures. Although, the precipitation rate is also high, reaching a peak of 159mm (6.26") in October. The average high temperature, resting around 29.4°C (84.9°F) to 28°C (82.4°F), subtly offsets the wet period.Winter weather in Gun Bay
Winter, unfolding from December to February, is a mild affair in Gun Bay. Temperatures ranging from 26.3°C (79.3°F) to 27.2°C (81°F) ensure a warm winter experience. However, stronger wind speeds of around 25.8 to 26.4km/h (16.4mph) could make it feel chillier. Similarly, while rainfall tends to decrease in these months, it still averages at 44mm (1.73") in January, providing occasional showers to balance out the tropical heat.Weather in January
January in Gun Bay presents a comfortable start to the new year, with the city's weather marked by moderately high temperatures and relative humidity. The gentle wind speed at 26.1km/h (16.2mph) allows residents to engage in breezy outdoor activities. Weather in January »Weather in February
Transitioning into February, Gun Bay experiences minor changes in its weather conditions. Notably, the UV index peaks to an average of 7, hence it would be prudent for visitors and locals to gear up with ample sun protection. The weather pleasantly supports excursions, imbued with intermittent splashes of rain. Weather in February »Weather in March
As March arrives, Gun Bay starts to feel the mild onset of warmer temperatures. The wind speed decreases from February's 24.7km/h (15.3mph) to a gentler 24.1km/h (15mph), cultivating a more serene environment. Daylight starts to extend its reign, shedding more light on the city. Weather in March »Weather in April
April in Gun Bay witnesses a significant increase in average temperature, humidity, and the amount of rainfall, signaling the onset of a warmer, more tropical climate. Gun Bay receives intense showers this month, with the average rainfall spiking to 36mm (1.42") from the previous 24mm (0.94") in March. Weather in April »Weather in May
May in Gun Bay marks a dramatic shift in weather patterns compared to the preceding months, with the advent of summer. Average rainfall escalates drastically, making this month one of the wettest periods of the year. Nevertheless, the showers do little to dampen the city's allure as it blossoms under the strong sun. Weather in May »Weather in June
June in Gun Bay is a showcase of typical Caribbean summer weather. Remarkably, humidity registers its yearly peak at 79%, making it the most humid month. The weather conditions incorporate warm temperatures, significant precipitation, and satisfactory sunlight. Weather in June »Weather in July
The weather in July in Gun Bay retains its tropical nature established in June. It receives an abundance of sunshine, with it being one of the sunniest periods. Weather patterns remain persistent, accompanied by high humidity and persistent rainfall. Weather in July »Weather in August
August in Gun Bay sees a continuation of the city's tropical summer season. The UV index continues to hold at its maximum of 7, making sun protection a necessity. Almost following July's blueprint, the weather conditions include warm temperatures and high rainfall levels. Weather in August »Weather in September
September in Gun Bay sees a slight decrease in temperature and humidity from August, signaling the start of a gradual climate transition. Interestingly, rainfall figures reach a significant 81mm (3.19"), contributing to the city's lush greenery. Weather in September »Weather in October
October in Gun Bay is marked by a significant increase in average rainfall, reaching its yearly maximum at 159mm (6.26"). Despite the rampant showers, the plentiful sunshine strikingly balances the weather's disposition. The limitation of daylight, however, becomes quite noticeable, announcing the approaching winter. Weather in October »Weather in November
November in Gun Bay sees a distinct shift in the weather conditions, with the average temperatures dropping and the rains beginning to recede. The wind speed heightens to 25.8km/h (16mph) from October's moderate 20.6km/h (12.8mph). Weather in November »Weather in December
December in Gun Bay signals the year-end with the onset of the city's mild winter weather. The wind speed hits its annual peak at 26.4km/h (16.4mph) providing a cool touch to the warm days. Simultaneously, the daylight hours reduce further, adding to the cozy winter ambiance. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Gun Bay, Cayman Islands
The warmest month (with the highest average high temperature) is August (29.7°C).
The month with the lowest average high temperature is February (26.2°C).
The month with the highest average low temperature is August (28.6°C).
The coldest month (with the lowest average low temperature) is March (24.9°C).
Average pressure
Gun Bay, Cayman Islands
- Average pressure in January:
1016.3mbar - Average pressure in February:
1016mbar - Average pressure in March:
1015.8mbar - Average pressure in April:
1014.4mbar - Average pressure in May:
1013.6mbar - Average pressure in June:
1014mbar
- Average pressure in July:
1014.8mbar - Average pressure in August:
1013.5mbar - Average pressure in September:
1012.4mbar - Average pressure in October:
1011.7mbar - Average pressure in November:
1013.4mbar - Average pressure in December:
1015.2mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is October (1011.7mbar).
Average wind speed
Gun Bay, Cayman Islands
- Average wind speed in January:
26.1km/h - Average wind speed in February:
24.7km/h - Average wind speed in March:
24.1km/h - Average wind speed in April:
20.7km/h - Average wind speed in May:
20.5km/h - Average wind speed in June:
21.8km/h
- Average wind speed in July:
19.2km/h - Average wind speed in August:
18.5km/h - Average wind speed in September:
17.2km/h - Average wind speed in October:
20.6km/h - Average wind speed in November:
25.8km/h - Average wind speed in December:
26.4km/h
The windiest month (with the highest average wind speed) is December (26.4km/h).
The calmest month (with the lowest average wind speed) is September (17.2km/h).
Average humidity
Gun Bay, Cayman Islands
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is September (74%).
Average rainfall
Gun Bay, Cayman Islands
The wettest month (with the highest rainfall) is October (159mm).
The driest month (with the least rainfall) is March (24mm).
Average rainfall days
Gun Bay, Cayman Islands
- Average rainfall days in January:
19.6 days - Average rainfall days in February:
16.2 days - Average rainfall days in March:
16 days - Average rainfall days in April:
16.7 days - Average rainfall days in May:
21.3 days - Average rainfall days in June:
20.9 days
- Average rainfall days in July:
20.7 days - Average rainfall days in August:
19.3 days - Average rainfall days in September:
19.9 days - Average rainfall days in October:
26.5 days - Average rainfall days in November:
23.4 days - Average rainfall days in December:
20.6 days
The month with the highest number of rainy days is October (26.5 days).
The month with the least rainy days is March (16 days).
Average daylight / Average sunshine
Gun Bay, Cayman Islands
- Average daylight in January:
11h and 6min - Average daylight in February:
11h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 36min - Average daylight in May:
13h and 6min - Average daylight in June:
13h and 18min
- Average daylight in July:
13h and 12min - Average daylight in August:
12h and 48min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 42min - Average daylight in November:
11h and 12min - Average daylight in December:
11h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in January:
7h and 36min - Average sunshine in February:
8h and 24min - Average sunshine in March:
8h and 30min - Average sunshine in April:
9h and 6min - Average sunshine in May:
10h and 36min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
9h and 12min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 24min - Average sunshine in November:
6h and 6min - Average sunshine in December:
6h and 0min
The months with the most sunshine are May and July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days
Gun Bay, Cayman Islands
- Average sunshine days in January:
5.9 days - Average sunshine days in February:
6.8 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
8.8 days - Average sunshine days in May:
6.3 days - Average sunshine days in June:
4.9 days
- Average sunshine days in July:
7.3 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
7.4 days - Average sunshine days in October:
3.1 days - Average sunshine days in November:
2.5 days - Average sunshine days in December:
4.3 days
The month with the most sunshine days is March (9.3 days).
The month with the least sunshine days is November (2.5 days).
Average UV index
Gun Bay, Cayman Islands
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover
Gun Bay, Cayman Islands
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is April (Cloud cover 28).
Average visibility
Gun Bay, Cayman Islands
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





