January weather forecast and climate
Cotonou, Benin

January, the same as December, in Cotonou, Benin, is another hot winter month, with average temperature fluctuating between 23.8°C (74.8°F) and 30.8°C (87.4°F).
The perfect water temperature of 27°C (80.6°F) with 9.2mm (0.36") of accumulated rainfall and only 1 rainfall days, makes January a great period for swimming and other water activities.

Temperature

In Cotonou, the average high-temperature remains equal as in December - a still hot 30.8°C (87.4°F). In Cotonou, the average low-temperature is 23.8°C (74.8°F).

Heat index

In January, the average heat index is evaluated at a torrid 39.9°C (103.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like pregnancy, wind, metabolic differences, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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

The average relative humidity in Cotonou is 79%.

Rainfall

January is the month with the least rainfall. Rain falls for 1 days and accumulates 9.2mm (0.36") of precipitation.

Sea temperature

In Cotonou, the average seawater temperature in January is 27°C (80.6°F).
Note: 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.

Daylight

Months with the shortest days in Cotonou are January, November and December, with an average of 11.8h of daylight.

Sunshine

In Cotonou, Benin, the average sunshine is 6.9h.

UV index

In January, the average daily maximum UV index in Cotonou is 11. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 11 transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in January in Cotonou?

The average high-temperature, in January, in Cotonou, Benin, is 30.8°C (87.4°F), while the average low-temperature is 23.8°C (74.8°F). In January, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 39.9°C (103.8°F).

What is the average humidity in January in Cotonou?

The average relative humidity in January in Cotonou, Benin, is 79%.

How many days does it rain in January in Cotonou?

In Cotonou, Benin, in January, it is raining for 1 days, with typically 9.2mm (0.36") of accumulated precipitation.

What is the driest month in Cotonou?

January is the month with the least rainfall. Rain falls for 1 days and accumulates 9.2mm (0.36") of precipitation.

How warm is the water in January in Cotonou?

In Cotonou, Benin, the average seawater temperature in January is 27°C (80.6°F). 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.

What is the month with the shortest days in Cotonou?

Months with the shortest days in Cotonou are January, November and December, with an average of 11.8h of daylight.

How many hours of daylight does Cotonou have in January?

The average length of the day in January in Cotonou is 11.8h.

How long on average sun shines in January in Cotonou?

The average sunshine in January in Cotonou is 6.9h.

What is the UV index reading in January in Cotonou?

In January, the average daily maximum UV index in Cotonou, Benin, is 11. A UV Index estimate of 11, and higher, represents an extreme health vulnerability from unprotected exposure to the UV radiation.
Average temperature in January - Cotonou, Benin
  • Average high temperature in January: 30.8°C

The warmest month (with the highest average high temperature) is March (31.9°C).
The month with the lowest average high temperature is August (27.8°C).

  • Average low temperature in January: 23.8°C

The month with the highest average low temperature is March (25.9°C).
The coldest month (with the lowest average low temperature) is August (23.4°C).

Average humidity in January - Cotonou, Benin
  • Average humidity in January: 79%

The month with the highest relative humidity is June (84%).
The month with the lowest relative humidity is April (76.5%).

Average rainfall in January - Cotonou, Benin
  • Average rainfall in January: 9.2mm

The wettest month (with the highest rainfall) is June (356mm).
The driest month (with the least rainfall) is January (9.2mm).

Average rainfall days in January - Cotonou, Benin
  • Average rainfall days in January: 1 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (1 days).

Average sea temperature in January - Cotonou, Benin
  • Average sea temperature in January: 27°C

The best months for swimming (with the highest average sea temperature) are March, April, May and November (29°C).
The coldest month (with the lowest average sea temperature) is August (25°C).

Average daylight in January / Average sunshine in January - Cotonou, Benin
  • Average daylight in January: 11.8h

Months with the longest days are June and July (Average daylight: 12.5h).
Months with the shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in January: 6.9h

The month with the most sunshine is November (Average sunshine: 8.1h).
The month with the least sunshine is July (Average sunshine: 4.4h).

Average UV index in January - Cotonou, Benin
  • Average UV index in January: 11

Months with the highest UV index are February, March, April, May, August, September and October (UV index 12).
The month with the lowest UV index is December (UV index 10).