December Weather in Haifeng China

Daily high temperatures decrease by 8°F, from 54°F to 46°F, rarely falling below 38°F or exceeding 62°F.

Daily low temperatures decrease by 7°F, from 37°F to 31°F, rarely falling below 23°F or exceeding 47°F.

For reference, on July 30, the hottest day of the year, temperatures in Haifeng typically range from 76°F to 89°F, while on January 22, the coldest day of the year, they range from 30°F to 44°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Baltimore, United States (7,338 miles away) is the far-away foreign place with temperatures most similar to Haifeng (view comparison).

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The month of December in Haifeng experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 32% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 31% on December 12.

The clearest day of the month is December 12, with clear, mostly clear, or partly cloudy conditions 69% of the time.

For reference, on July 4, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 69%, while on December 12, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 69%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Haifeng, the chance of a wet day over the course of December is gradually decreasing, starting the month at 13% and ending it at 10%.

For reference, the year's highest daily chance of a wet day is 45% on July 6, and its lowest chance is 9% on December 17.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during December in Haifeng is gradually decreasing, starting the month at 1.2 inches, when it rarely exceeds 2.9 inches or falls below 0.1 inches, and ending the month at 0.9 inches, when it rarely exceeds 2.3 inches.

The lowest average 31-day accumulation is 0.9 inches on December 24.

Over the course of December in Haifeng, the length of the day is essentially constant. The shortest day of the month is December 22, with 9 hours, 59 minutes of daylight and the longest day is December 1, with 10 hours, 9 minutes of daylight.

The earliest sunrise of the month in Haifeng is 6:42 AM on December 1 and the latest sunrise is 18 minutes later at 7:00 AM on December 31.

The earliest sunset is 4:51 PM on December 4 and the latest sunset is 11 minutes later at 5:01 PM on December 31.

Daylight saving time is not observed in Haifeng during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 4:50 AM and sets 14 hours, 19 minutes later, at 7:09 PM, while on December 21, the shortest day of the year, it rises at 6:56 AM and sets 9 hours, 59 minutes later, at 4:55 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for December 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in Haifeng is essentially constant during December, remaining around 0% throughout.

The lowest chance of a muggy day during December is 0% on December 17.

For reference, on July 24, the muggiest day of the year, there are muggy conditions 99% of the time, while on December 3, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Haifeng is essentially constant during December, remaining within 0.1 miles per hour of 9.2 miles per hour throughout.

For reference, on March 8, the windiest day of the year, the daily average wind speed is 10.0 miles per hour, while on August 26, the calmest day of the year, the daily average wind speed is 8.3 miles per hour.

The highest daily average wind speed during December is 9.3 miles per hour on December 8.

The hourly average wind direction in Haifeng throughout December is predominantly from the north, with a peak proportion of 46% on December 25.

Haifeng is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in Haifeng is rapidly decreasing during December, falling by 8°F, from 56°F to 48°F, over the course of the month.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Haifeng typically lasts for 8.1 months (249 days), from around March 18 to around November 22, rarely starting before March 1 or after April 5, and rarely ending before November 4 or after December 10.

The month of December in Haifeng is more likely than not fully outside of the growing season, with the chance that a given day is in the growing season rapidly decreasing from 28% to 0% over the course of the month.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in Haifeng are essentially constant during December, remaining within 11°F of 4,648°F throughout.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in Haifeng is essentially constant during December, remaining within 0.1 kWh of 2.8 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 2.7 kWh on December 27.

For the purposes of this report, the geographical coordinates of Haifeng are 32.903 deg latitude, 120.449 deg longitude, and 10 ft elevation.

The topography within 2 miles of Haifeng is essentially flat, with a maximum elevation change of 23 feet and an average elevation above sea level of 6 feet. Within 10 miles is also essentially flat (66 feet). Within 50 miles is essentially flat (167 feet).

The area within 2 miles of Haifeng is covered by cropland (95%), within 10 miles by cropland (94%), and within 50 miles by cropland (61%) and water (29%).