December weather forecast and climate
Port Harcourt, Nigeria

The first month of the winter, December, is still a tropical month in Port Harcourt, Nigeria, with temperature in the range of an average low of 22.8°C (73°F) and an average high of 32°C (89.6°F).

Temperature

In Port Harcourt, Nigeria, the average high-temperature is practically the same as in November - a still tropical 32°C (89.6°F). In Port Harcourt, Nigeria, in December, the average low-temperature is 22.8°C (73°F).

Heat index

In December, the average heat index is appraised at a scorching 41.2°C (106.2°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'felt air temperature', 'real feel', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, metabolic differences). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Port Harcourt, the average relative humidity in December is 72%.

Rainfall

December is the month with the least rainfall. Rain falls for 17.5 days and accumulates 45mm (1.77") of precipitation.

Sea temperature

In Port Harcourt, the average seawater temperature in December is 28.3°C (82.9°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

December has the shortest days of the year, with an average of 11.8h of daylight.

Sunshine

The month with the most sunshine is December, with an average of 9.6h of sunshine.

UV index

Months with the highest UV index in Port Harcourt are January, February, April, November and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in December in Port Harcourt?

In December, in Port Harcourt, Nigeria, the average high-temperature is 32°C (89.6°F), and the average low-temperature is 22.8°C (73°F). The average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in December is calculated to 41.2°C (106.2°F).

What is the average humidity in December in Port Harcourt?

In December, the average relative humidity in Port Harcourt is 72%.

How much does it rain in Port Harcourt in December?

In Port Harcourt, in December, it is raining for 17.5 days, with typically 45mm (1.77") of accumulated precipitation.

What is the driest month in Port Harcourt?

December is the month with the least rainfall in Port Harcourt. Rain falls for 17.5 days and accumulates 45mm (1.77") of precipitation.

What is the sea water temperature in December in Port Harcourt?

In December, the average sea temperature in Port Harcourt is 28.3°C (82.9°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Port Harcourt?

The month with the shortest days in Port Harcourt, Nigeria, is December, with an average of 11.8h of daylight.

How many hours of daylight does Port Harcourt have in December?

In Port Harcourt, Nigeria, the average length of the day in December is 11.8h.

What month has the most sunshine in Port Harcourt?

With an average of 9.6h of sunshine, December has the most sunshine of the year.

How long on average sun shines in December in Port Harcourt?

The average sunshine in December in Port Harcourt, Nigeria, is 9.6h.

When is the highest UV index in Port Harcourt?

January, February, April, November and December, with an average maximum UV index of 7, are months with the highest UV index in Port Harcourt.

What is the UV index intensity in December in Port Harcourt?

In December, the average daily maximum UV index in Port Harcourt is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in December - Port Harcourt, Nigeria
  • Average high temperature in December: 32°C

The warmest month (with the highest average high temperature) is January (32.8°C).
The month with the lowest average high temperature is July (26.8°C).

  • Average low temperature in December: 22.8°C

The month with the highest average low temperature is March (24.3°C).
The coldest month (with the lowest average low temperature) is August (21.8°C).

Average pressure in December - Port Harcourt, Nigeria
  • Average pressure in December: 1010.4mbar

The month with the highest atmospheric pressure is July (1013.6mbar).
The month with the lowest atmospheric pressure is February (1009.7mbar).

Average wind speed in December - Port Harcourt, Nigeria
  • Average wind speed in December: 6.5km/h

The windiest month (with the highest average wind speed) is August (9.6km/h).
The calmest month (with the lowest average wind speed) is November (6.3km/h).

Average humidity in December - Port Harcourt, Nigeria
  • Average humidity in December: 72%

Months with the highest relative humidity are July and September (88%).
The month with the lowest relative humidity is January (70%).

Average rainfall in December - Port Harcourt, Nigeria
  • Average rainfall in December: 45mm

The wettest month (with the highest rainfall) is July (293mm).
The driest month (with the least rainfall) is December (45mm).

Average rainfall days in December - Port Harcourt, Nigeria
  • Average rainfall days in December: 17.5 days

Months with the highest number of rainy days are August and October (30.1 days).
The month with the least rainy days is January (14.9 days).

Average sea temperature in December - Port Harcourt, Nigeria
  • Average sea temperature in December: 28.3°C

The best month for swimming (with the highest average sea temperature) is April (28.9°C).
The coldest month (with the lowest average sea temperature) is August (26.1°C).

Average daylight in December / Average sunshine in December - Port Harcourt, Nigeria
  • Average daylight in December: 11.8h

Months with the longest days are June and July (Average daylight: 12.4h).
The month with the shortest days is December (Average daylight: 11.8h).

  • Average sunshine in December: 9.6h

The month with the most sunshine is December (Average sunshine: 9.6h).
The month with the least sunshine is August (Average sunshine: 3.4h).

Average sunshine days in December - Port Harcourt, Nigeria
  • Average sunshine days in December: 12.3 days

The month with the most sunshine days is January (15.3 days).
The month with the least sunshine days is September (0.2 days).

Average UV index in December - Port Harcourt, Nigeria
  • Average UV index in December: 7

Months with the highest UV index are January, February, April, November and December (UV index 7).
Months with the lowest UV index are July and August (UV index 5).

Average cloud cover in December - Port Harcourt, Nigeria
  • Average cloud cover in December: 26

The month with the most cloud cover is August (Cloud cover 78).
Months with the least cloud cover are January and December (Cloud cover 26).

Average visibility in December - Port Harcourt, Nigeria
  • Average visibility in December: 9km

Months with the highest visibility are January, February, March, April and December (9km).
Months with the lowest visibility are July, August, September and October (7km).