Last updated: January 18, 2025
Cuyuni-Mazaruni, located in Guyana, exhibits a tropical rainforest climate classified under the Koppen-Geiger system as Af. This region experiences consistently warm temperatures throughout the year, with minimums reaching 21°C (69°F) in February and averages hovering around 26°C (79°F). The peak warmth occurs in September, when maximum temperatures can soar to 34°C (93°F). The climatic conditions foster a rich diversity of flora and fauna, underpinning the ecological significance of this vibrant locale.
In Cuyuni-Mazaruni, Guyana, temperature patterns throughout the year reveal a consistently warm tropical climate. The year begins with January and February, where minimum and average temperatures remain steady at 21°C (69°F) and 25°C (78°F), respectively. As the months progress into March and April, a slight increase in warmth is observed, with average temperatures peaking at 26°C (79°F) and maximums reaching 32°C (91°F) by April. The warmest period occurs in September, showcasing maximum temperatures of 34°C (93°F), accompanied by average temperatures of 27°C (81°F). Following this peak warmth, temperatures gradually moderate into the final months of the year, with December seeing a return to minimums of 21°C (71°F) and maximums of 31°C (87°F). Overall, the region maintains a tropical warmth throughout, with subtle seasonal fluctuations marking the transition from wetter to drier periods.
Bartica experiences a range of temperatures throughout the year, with a minimum of 21°C (69°F) observed in February and a maximum of 34°C (93°F) recorded in September. For more detailed climate information, you can check the monthly temperatures in Bartica here.
Cuyuni-Mazaruni, Guyana, experiences a pronounced tropical rainforest climate characterized by significant seasonal rainfall. Beginning the year, January and February see relatively lower precipitation levels, with 131 mm (5.2 in) and 87 mm (3.4 in), respectively, accompanied by around 21 days of rain per month. As the dry season transitions into the wet season, rainfall escalates significantly in March to 123 mm (4.8 in) and continues to increase in April, peaking at 160 mm (6.3 in). The climax of precipitation occurs in May and June, with 349 mm (13.8 in) and 404 mm (15.9 in) recorded, respectively, highlighting a trend of increasing moisture with the onset of the rainy season.
This heavy rainfall continues through July, where 327 mm (12.9 in) is seen, before tapering off in August to 225 mm (8.9 in). Months like September and October experience moderate rainfall levels at 140 mm (5.5 in) and 152 mm (6.0 in), while November and December see increased precipitation again, measuring 242 mm (9.5 in) and 252 mm (9.9 in), respectively. Throughout the year, the region averages 24 to 30 rainy days per month, confirming its classification as a tropical wet environment and underscoring the significant role of consistent rainfall in nurturing its diverse ecosystems.
In Cuyuni-Mazaruni, Guyana, sunshine duration exhibits marked seasonal trends, with a notable increase in daylight hours from the beginning to mid-year. Starting with 252 hours of sunshine in January, there is a gradual rise as the months progress, culminating in 318 hours in March, marking it as the month with the highest sunshine hours. This upward trend reflects the region’s transition towards the drier and sunnier conditions typical of the year. However, April sees a slight decrease to 298 hours, serving as a reminder of the impending shift towards the wetter months.
As the wet season approaches in May, sunshine hours decrease significantly to 265 hours, further declining to 230 hours in June—the month with the least sunlight. Following this dip, there is a resurgence in sunshine duration during July and August, with 289 and 314 hours, respectively. The months of September and October continue this trend, maintaining consistency with 312 hours each, before November and December experience a modest decline to 274 and 278 hours. Overall, the patterns illustrate that while Cuyuni-Mazaruni enjoys considerable sunshine primarily from late winter through late summer, the rainy season distinctly impacts sunlight availability, shaping the region's climate and ecology.
The UV Index in Cuyuni-Mazaruni, Guyana, underscores the region's high exposure to ultraviolet radiation throughout the year, remaining predominantly within the extreme category. Beginning with an Index of 13 in January, the UV levels peak in March and April, reaching a notable 15. This level of intensity necessitates protective measures for outdoor activities, as the burn time is a mere 10 minutes across all months, highlighting the critical importance of sun safety in this tropical environment.
Throughout the latter part of the year, the UV Index remains consistently elevated at 13 from June to October, indicating sustained high-risk sun exposure. As November and December approach, there is a slight decrease to 12, yet the threat remains significant. The persistent extreme UV conditions reflect the geographical position of Cuyuni-Mazaruni near the equator, where sun intensity is amplified. Residents and visitors alike must remain vigilant and adopt sun protection strategies year-round to mitigate the risks associated with prolonged exposure to the sun.
UV Risk Categories
In Cuyuni-Mazaruni, Guyana, daylight duration remains relatively stable throughout the year, reflecting the region's equatorial location. January and February offer 11 hours of daylight each, providing consistent lighting as the year begins. The trend shifts in March, where daylight extends to 12 hours. This increase continues through the following months of April, May, June, July, August, and September, all maintaining the 12-hour mark, facilitating longer periods for outdoor activities and natural light exposure.
As the year progresses into October, November, and December, daylight hours taper back to 11 hours, mirroring the initial months of the year. This cyclical pattern emphasizes the minimal variation in day length typical of equatorial climates, where the sun rises and sets at relatively consistent times year-round. Overall, the daylight duration in Cuyuni-Mazaruni provides a predictable environment that not only influences daily life but also plays a crucial role in the region's rich biodiversity and agricultural practices.
Bartica, Guyana experiences a tropical climate characterized by warm temperatures year-round, with averages ranging from 25°C (78°F) in January and February to 27°C (81°F) in July and August. The heat peaks in September, with maximum temperatures reaching 34°C (93°F). Rainfall is substantial, particularly from May to July, with June recording the highest precipitation at 404 mm (15.9 in). Sunshine is abundant, especially in March with 318 hours, while June sees the least sun at 230 hours. For more details, visit Bartica climate.
In summary, Cuyuni-Mazaruni, Guyana, exemplifies a tropical climate characterized by warm temperatures, significant rainfall, high UV exposure, and consistent daylight duration throughout the year. The region's weather patterns reveal a distinct wet and dry season, with substantial sunshine and extreme UV levels particularly evident from late winter to late summer. The stable 11 to 12 hours of daylight across most months underscores the equatorial influence, supporting various ecological and agricultural activities. Understanding these climatic nuances is essential for residents and visitors alike, as it informs sun safety practices and helps harness the region's natural resources effectively. Overall, Cuyuni-Mazaruni's climate contributes significantly to its rich biodiversity and vibrant ecosystems, making it a vital area for both environmental studies and sustainable development.