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
With the advent of December, Mercer experiences an average high-temperature of a pleasant 20.5°C (68.9°F), mirroring a close resemblance to the previous month. In Mercer, December's nights observe an average temperature dip to a refreshing 15°C (59°F).Humidity
In Mercer, the average relative humidity in December is 79%.Rainfall
In Mercer, in December, it is raining for 13.7 days, with typically 53mm (2.09") of accumulated precipitation. In Mercer, during the entire year, the rain falls for 174 days and collects up to 593mm (23.35") of precipitation.Daylight
December has the longest days of the year in Mercer, with an average of 14h and 42min of daylight.On the first day of the month, sunrise is at 5:52 am and sunset at 8:24 pm. On the last day of December, in Mercer, sunrise is at 6:02 am and sunset at 8:43 pm NZDT.
Sunshine
The month with the most sunshine in Mercer, New Zealand, is December, with an average of 7.8h of sunshine.UV index
January through April and December, with an average maximum UV index of 5, are months with the highest UV index in Mercer. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 5 in December translates into this advice:
Undertake protective steps - Preventing sun damage is advised. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Mercer in December?
What is the average humidity in December in Mercer?
How many days does it rain in December in Mercer?
When are the longest days in Mercer?
How many hours of daylight does Mercer have in December?
What time are sunrise and sunset in December in Mercer?
What month has the most sunshine in Mercer?
How many hours of sunshine does Mercer have in December?
What is the month with the highest UV index in Mercer?
How high is the UV index in December in Mercer?
Average temperature in December
Mercer, New Zealand
- Average high temperature in December: 20.5°C
The warmest month (with the highest average high temperature) is February (22.7°C).
The month with the lowest average high temperature is July (13.8°C).
- Average low temperature in December: 15°C
The month with the highest average low temperature is February (16.8°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).
Average pressure in December
Mercer, New Zealand
- Average pressure in December: 1015.5mbar
The month with the highest atmospheric pressure is March (1018.3mbar).
The month with the lowest atmospheric pressure is September (1014.7mbar).
Average wind speed in December
Mercer, New Zealand
- Average wind speed in December: 15.1km/h
The windiest month (with the highest average wind speed) is September (18.5km/h).
The calmest month (with the lowest average wind speed) is February (13.2km/h).
Average humidity in December
Mercer, New Zealand
- Average humidity in December: 79%
The months with the highest relative humidity are August and September (80%).
The months with the lowest relative humidity are January and November (77%).
Average rainfall in December
Mercer, New Zealand
- Average rainfall in December: 53mm
The wettest month (with the highest rainfall) is June (68mm).
The driest month (with the least rainfall) is March (31mm).
Average rainfall days in December
Mercer, New Zealand
- Average rainfall days in December: 13.7 days
The month with the highest number of rainy days is August (17.7 days).
The month with the least rainy days is February (10.8 days).
Average daylight in December /
Average sunshine in December
Mercer, New Zealand
- Average daylight in December: 14h and 4min
The month with the longest days is December (Average daylight: 14h and 42min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in December: 7h and 5min
The month with the most sunshine is December (Average sunshine: 7h and 48min).
The months with the least sunshine are August and September (Average sunshine: 6h and 12min).
Average sunshine days in December
Mercer, New Zealand
- Average sunshine days in December: 12.6 days
The month with the most sunshine days is January (16.6 days).
The month with the least sunshine days is August (10.1 days).
Average UV index in December
Mercer, New Zealand
- Average UV index in December: 5
The months with the highest UV index are January, February, March, April and December (UV index 5).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in December
Mercer, New Zealand
- Average cloud cover in December: 47
The month with the most cloud cover is September (Cloud cover 52).
The month with the least cloud cover is January (Cloud cover 41).
Average visibility in December
Mercer, New Zealand
- 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).
Mercer, New Zealand
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