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
Weather in December
Temperature
Entering December, the average high-temperature is recorded at a still warm 27.4°C (81.3°F), exhibiting a minimal shift from November's 27.9°C (82.2°F). Waterloo marks an average drop to a still moderately hot 26.4°C (79.5°F) during nighttime in December, following the high of the day.Heat index
Throughout December, the heat index is calculated to be a hot 30°C (86°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
In Waterloo, the average relative humidity in December is 76%.Rainfall
In Waterloo, in December, it is raining for 14.9 days, with typically 23mm (0.91") of accumulated precipitation. In Waterloo, during the entire year, the rain falls for 164.4 days and collects up to 289mm (11.38") of precipitation.Daylight
With an average of 11h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:11 and sunset at 17:35. On the last day of December, sunrise is at 06:27 and sunset at 17:48 AST.
Sunshine
With an average of 6.6h of sunshine, December has the least sunshine of the year.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 7 during December leads to these advisories:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Waterloo in December?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the highest UV index?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Waterloo, Saint Vincent and the Grenadines
- Average high temperature in December: 27.4°C
The warmest month (with the highest average high temperature) is September (28.7°C).
The month with the lowest average high temperature is February (26.3°C).
- Average low temperature in December: 26.4°C
The month with the highest average low temperature is September (27.9°C).
The coldest month (with the lowest average low temperature) is January (25.3°C).
Average pressure in December
Waterloo, Saint Vincent and the Grenadines
- Average pressure in December: 1013mbar
The month with the highest atmospheric pressure is June (1014.6mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in December
Waterloo, Saint Vincent and the Grenadines
- Average wind speed in December: 26.6km/h
The windiest month (with the highest average wind speed) is February (28.4km/h).
The calmest month (with the lowest average wind speed) is September (19.7km/h).
Average humidity in December
Waterloo, Saint Vincent and the Grenadines
- Average humidity in December: 76%
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is February (75%).
Average rainfall in December
Waterloo, Saint Vincent and the Grenadines
- Average rainfall in December: 23mm
The wettest month (with the highest rainfall) is November (40mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in December
Waterloo, Saint Vincent and the Grenadines
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (8.7 days).
Average daylight in December /
Average sunshine in December
Waterloo, Saint Vincent and the Grenadines
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in December: 6h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in December
Waterloo, Saint Vincent and the Grenadines
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is March (16.7 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Waterloo, Saint Vincent and the Grenadines
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
Waterloo, Saint Vincent and the Grenadines
- Average cloud cover in December: 40
The month with the most cloud cover is June (Cloud cover 44).
The months with the least cloud cover are February and September (Cloud cover 35).
Average visibility in December
Waterloo, Saint Vincent and the Grenadines
- 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).
Waterloo, Saint Vincent and the Grenadines
Weather forecast for your location
2. Allow the app to use your location
