January weather forecast
John, French Guiana

January, like December, in John, French Guiana, is a moderately hot winter month, with an average temperature ranging between max 29.4°C (84.9°F) and min 22.4°C (72.3°F).

Temperature

John's January reports an average high-temperature of a warm 29.4°C (84.9°F), exhibiting a minor difference from December. Throughout January, John witnesses a consistent average low-temperature of 22.4°C (72.3°F).

Heat index

The heat index value during January is evaluated at a torrid 36°C (96.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In January, the average relative humidity is 82%.

Rainfall

In John, during January, the rain falls for 23.6 days and regularly aggregates up to 54mm (2.13") of precipitation. In John, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.

Daylight

In January, the average length of the day in John, French Guiana, is 11h and 52min.
On the first day of January in John, sunrise is at 06:42 and sunset at 18:33. On the last day of the month, sunrise is at 06:50 and sunset at 18:45 -03.

Sunshine

In John, the average sunshine in January is 6.3h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in January transforms into the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.