January weather forecast
Porto Novo, Benin

The new year commences with warm and humid conditions in Porto Novo, Benin. Temperatures range from 24°C (75.2°F) at night to a high of 33.8°C (92.8°F) during the day, however, it is the relative humidity of 67% that often makes the weather feel hotter. Notably, January exhibits the lowest amount of rainfall for the year with a total of only 9mm (0.35") over about five days. The wind speed averages around 9.7km/h (6mph), offering a slight reprieve from the heat. By the end of the month, a gradual increase in temperature can be expected, heading into February.

Temperature

In Porto Novo, Benin, January is the warmest month, with temperatures averaging a high of 33.8°C (92.8°F) and a low of 24°C (75.2°F).

Heat index

The heat index value for January is evaluated at a burning hot 45°C (113°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

January is the least humid month, with an average relative humidity of 67%.

Rainfall

In Porto Novo, during January, the rain falls for 4.8 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, there are 148.7 rainfall days, and 481mm (18.94") of precipitation is accumulated.

Daylight

In Porto Novo, the average length of the day in January is 11h and 48min.
On the first day of the month, sunrise is at 07:00 and sunset at 18:45. On the last day of January, in Porto Novo, sunrise is at 07:07 and sunset at 18:58 WAT.

Sunshine

In Porto Novo, Benin, the average sunshine in January is 9.5h.

UV index

January through May, August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Porto Novo. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during January leads to these advisories:
Fend off overexposure. Sun protection is vital. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.