Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December's advent notes a subtle adjustment in average high-temperature to a still hot 30.8°C (87.4°F) from November. Oyster Bay records a mean low-temperature of 24.8°C (76.6°F) in December.Heat index
December's heat index is evaluated at a very hot 39°C (102.2°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.Always consider that heat index estimations are for light winds and places in the shade. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.
Humidity
In December, the average relative humidity is 77%.Rainfall
In Oyster Bay, during December, the rain falls for 24.3 days and regularly aggregates up to 75mm (2.95") of precipitation. In Oyster Bay, during the entire year, the rain falls for 255.3 days and collects up to 734mm (28.9") of precipitation.Daylight
December has the longest days of the year, with an average of 12h and 30min of daylight.On the first day of December, sunrise is at 05:57 and sunset at 18:26. On the last day of the month, sunrise is at 06:10 and sunset at 18:41 EAT.
Sunshine
In December, the average sunshine in Oyster Bay, Tanzania, is 9.2h.UV index
January through March and December, with an average maximum UV index of 7, are months with the highest UV index in Oyster Bay, Tanzania. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 7 in December leads to these recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is December in Oyster Bay?
What is the average humidity in December in Oyster Bay?
How many days does it rain in December in Oyster Bay?
When are the longest days in Oyster Bay?
How many hours of daylight does Oyster Bay have in December?
When is the sunrise / sunset in December in Oyster Bay?
How many hours of sunshine does Oyster Bay have in December?
What are the months with the highest UV index in Oyster Bay?
What is the UV index reading in December in Oyster Bay?
Average temperature in December
Oyster Bay, Tanzania
- Average high temperature in December: 30.8°C
The warmest months (with the highest average high temperature) are February and March (30.9°C).
The month with the lowest average high temperature is July (27.6°C).
- Average low temperature in December: 24.8°C
The months with the highest average low temperature are January and February (25.3°C).
The coldest month (with the lowest average low temperature) is July (21.3°C).
Average pressure in December
Oyster Bay, Tanzania
- Average pressure in December: 1010.6mbar
The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is February (1010mbar).
Average wind speed in December
Oyster Bay, Tanzania
- Average wind speed in December: 11.3km/h
The windiest month (with the highest average wind speed) is July (15.6km/h).
The calmest month (with the lowest average wind speed) is March (9.5km/h).
Average humidity in December
Oyster Bay, Tanzania
- Average humidity in December: 77%
The month with the highest relative humidity is April (81%).
The months with the lowest relative humidity are July, August and September (75%).
Average rainfall in December
Oyster Bay, Tanzania
- Average rainfall in December: 75mm
The wettest month (with the highest rainfall) is April (154mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in December
Oyster Bay, Tanzania
- Average rainfall days in December: 24.3 days
The month with the highest number of rainy days is April (26.4 days).
The month with the least rainy days is June (17.5 days).
Average daylight in December /
Average sunshine in December
Oyster Bay, Tanzania
- Average daylight in December: 12h and 3min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in December: 9h and 1min
The month with the most sunshine is November (Average sunshine: 10h and 30min).
The month with the least sunshine is April (Average sunshine: 8h and 0min).
Average sunshine days in December
Oyster Bay, Tanzania
- Average sunshine days in December: 3.9 days
The month with the most sunshine days is June (7.8 days).
The month with the least sunshine days is April (2.6 days).
Average UV index in December
Oyster Bay, Tanzania
- Average UV index in December: 7
The months with the highest UV index are January, February, March and December (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September, October and November (UV index 6).
Average cloud cover in December
Oyster Bay, Tanzania
- Average cloud cover in December: 31
The month with the most cloud cover is April (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Oyster Bay, Tanzania
- Average visibility in December: 10km
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).
