December weather forecastGeorgetown, Guyana

December
Weather in December
Signing off the year, December in Georgetown offers balanced weather conditions, propitious for holiday festivities. With the city's tropical weather maintaining a consistent climate, December’s end marks a shift towards a slightly cooler phase. Sailing through from November to the fresh year, December observes an increase in rainfall, hitting an average of 262mm (10.31"). Georgetown, thus, wraps up the year under the warm sun, mild sea waters, and occasional showers. The weather bets high on the festive vibe, ensuring December remains a memorable affair.Temperature
At the onset of December, Georgetown records an average high-temperature of a moderately hot 29.1°C (84.4°F), showing little deviation from the preceding month. An average low-temperature of 23.8°C (74.8°F) is observed during December nights.Rainfall
In Georgetown, during December, the rain falls for 18 days and regularly aggregates up to 262mm (10.31") of precipitation. In Georgetown, during the entire year, the rain falls for 174 days and collects up to 2260mm (88.98") of precipitation.Sea temperature
In Georgetown, in December, the average water temperature is 27.8°C (82°F).Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.
Daylight
The month with the shortest days is December, with an average of 11h and 42min of daylight.On the first day of December, sunrise is at 05:49 and sunset at 17:34. On the last day of the month, sunrise is at 06:03 and sunset at 17:48 -04.
Sunshine
In December, the average sunshine is 6h.UV index
November and December, with an average maximum UV index of 11, are months with the lowest UV index. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 11 in December translates into the following instructions:
Adopt all essential precautions. Preventing sun harm is crucial. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. After a swim or an outdoor workout, generously apply and regularly reapply a sunscreen with at least SPF 30, even if the day is cloudy. Heads up! The reflection of sand and water notably intensifies UV rays from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Georgetown, Guyana
- Average high temperature in December: 29.1°C
The warmest months (with the highest average high temperature) are September and October (30.8°C).
The month with the lowest average high temperature is January (28.6°C).
- Average low temperature in December: 23.8°C
The months with the highest average low temperature are April and October (24.4°C).
The coldest month (with the lowest average low temperature) is July (23.5°C).
Average rainfall in December
Georgetown, Guyana
- Average rainfall in December: 261.9mm
The wettest month (with the highest rainfall) is June (327.7mm).
The driest month (with the least rainfall) is February (88.5mm).
Average rainfall days in December
Georgetown, Guyana
- Average rainfall days in December: 18 days
The month with the highest number of rainy days is June (23 days).
The months with the least rainy days are September and October (9 days).
Average sea temperature in December
Georgetown, Guyana
- Average sea temperature in December: 27.8°C
The best month for swimming (with the highest average sea temperature) is August (28.9°C).
The coldest month (with the lowest average sea temperature) is February (27.2°C).
Average daylight in December /
Average sunshine in December
Georgetown, Guyana
- Average daylight in December: 11h and 42min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is September (Average sunshine: 7h and 42min).
The month with the least sunshine is June (Average sunshine: 5h and 12min).
Average UV index in December
Georgetown, Guyana
- Average UV index in December: 11
The months with the highest UV index are January, February, March, April, May, June, July, August, September and October (UV index 12).
The months with the lowest UV index are November and December (UV index 11).





