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
As December takes hold, the average high-temperature is a still pleasant 21.5°C (70.7°F), nearly mirroring that of the previous month. San Juan Ñumí reports a steady low-temperature average of 9.4°C (48.9°F) throughout December, revealing a large deviation from the daytime high.Humidity
In San Juan Ñumí, the average relative humidity in December is 69%.Rainfall
December is the month with the least rainfall. Rain falls for 4.5 days and accumulates 3mm (0.12") of precipitation.Daylight
With an average of 11h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:45 am and sunset at 5:54 pm. On the last day of December, sunrise is at 7:00 am and sunset at 6:07 pm CST.
Sunshine
The average sunshine in December is 8.5h.UV index
The months with the lowest UV index are January, June, October through December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 4 during December morphs into the following directions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December in San Juan Ñumí?
What time are sunrise and sunset in December?
How many hours of sunshine does San Juan Ñumí have in December?
What is the month with the lowest UV index in San Juan Ñumí?
How high is the UV index in December?
Average temperature in December
San Juan Ñumí, Mexico
- Average high temperature in December: 21.5°C
The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is January (21.1°C).
- Average low temperature in December: 9.4°C
The month with the highest average low temperature is May (14.5°C).
The coldest month (with the lowest average low temperature) is January (8.8°C).
Average pressure in December
San Juan Ñumí, Mexico
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is May (1013.8mbar).
Average wind speed in December
San Juan Ñumí, Mexico
- Average wind speed in December: 7.8km/h
The windiest month (with the highest average wind speed) is January (8.7km/h).
The calmest months (with the lowest average wind speed) are June and September (6.7km/h).
Average humidity in December
San Juan Ñumí, Mexico
- Average humidity in December: 69%
The month with the highest relative humidity is September (81%).
The month with the lowest relative humidity is April (56%).
Average rainfall in December
San Juan Ñumí, Mexico
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is June (164mm).
The driest month (with the least rainfall) is December (3mm).
Average rainfall days in December
San Juan Ñumí, Mexico
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is September (26.6 days).
The month with the least rainy days is December (4.5 days).
Average daylight in December /
Average sunshine in December
San Juan Ñumí, Mexico
- Average daylight in December: 11h and 1min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).
- Average sunshine in December: 8h and 3min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).
Average sunshine days in December
San Juan Ñumí, Mexico
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is December (22.2 days).
The months with the least sunshine days are August and September (2 days).
Average UV index in December
San Juan Ñumí, Mexico
- Average UV index in December: 4
The month with the highest UV index is April (UV index 6).
The months with the lowest UV index are January, June, October, November and December (UV index 4).
Average cloud cover in December
San Juan Ñumí, Mexico
- Average cloud cover in December: 18
The month with the most cloud cover is September (Cloud cover 42).
The months with the least cloud cover are February, March and April (Cloud cover 15).
Average visibility in December
San Juan Ñumí, Mexico
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The month with the lowest visibility is September (8km).
