January weather forecast
Nationale, French Guiana

January

Weather in January

January, like December, in Nationale, French Guiana, is a moderately hot winter month, with temperature in the range of an average low of 24°C (75.2°F) and an average high of 28°C (82.4°F).

Temperature

January commences with an average high-temperature of a still warm 28°C (82.4°F), showing little deviation from December's 28.8°C (83.8°F). Nationale, in January, logs an average low-temperature of 24°C (75.2°F), a subtle step down from daytime readings.

Heat index

In January, the average heat index is appraised at a hot 33°C (91.4°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In Nationale, the average relative humidity in January is 84%.

Rainfall

In Nationale, in January, during 28 rainfall days, 154mm (6.06") of precipitation is typically accumulated. In Nationale, during the entire year, the rain falls for 277 days and collects up to 1707mm (67.2") of precipitation.

Daylight

The average length of the day in January in Nationale is 11h and 53min.
On the first day of the month, sunrise is at 06:38 and sunset at 18:30. On the last day of January, in Nationale, sunrise is at 06:46 and sunset at 18:42 -03.

Sunshine

In January, the average sunshine is 6.8h.

UV index

The months with the lowest UV index are January through May and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In January, the UV index of 6 transforms into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.

Frequently asked questions

Is it hot in Nationale during January?
The high-temperature, in January, in Nationale, records 28°C (82.4°F), while the low-temperature is 24°C (75.2°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in January is appraised at 33°C (91.4°F).
What is the average humidity in January in Nationale?
In January, the average relative humidity in Nationale, French Guiana, is 84%.
How much does it rain in Nationale in January?
In Nationale, French Guiana, during January, the rain falls for 28 days and regularly aggregates up to 154mm (6.06") of precipitation.
What is the average length of the day in January in Nationale?
In Nationale, French Guiana, the average day length in January is 11h and 53min.
When is the sunrise / sunset in January in Nationale?
In January, on the first day of the month, sunrise is at 06:38 and sunset at 18:30. On the last day of the month, in Nationale, French Guiana, sunrise is at 06:46 and sunset at 18:42 -03.
How long on average sun shines in January in Nationale?
In Nationale, French Guiana, the average sunshine duration in January is 6.8h.
What are the months with the lowest UV index in Nationale?
The months with the lowest UV index are January through May and December, with an average maximum UV index of 6.
How high is the UV index in January in Nationale?
In Nationale, the average daily maximum UV index in January is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January
Nationale, French Guiana
  • Average high temperature in January: 28°C

The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).

  • Average low temperature in January: 24°C

The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).

Average pressure in January
Nationale, French Guiana
  • Average pressure in January: 1011.9mbar

The month with the highest atmospheric pressure is July (1013.2mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in January
Nationale, French Guiana
  • Average wind speed in January: 12.2km/h

The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).

Average humidity in January
Nationale, French Guiana
  • Average humidity in January: 84%

The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).

Average rainfall in January
Nationale, French Guiana
  • Average rainfall in January: 154mm

The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).

Average rainfall days in January
Nationale, French Guiana
  • Average rainfall days in January: 28 days

The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).

Average daylight in January /
Average sunshine in January
Nationale, French Guiana
  • Average daylight in January: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).

  • Average sunshine in January: 6h and 5min

The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).

Average sunshine days in January
Nationale, French Guiana
  • Average sunshine days in January: 1.8 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).

Average UV index in January
Nationale, French Guiana
  • Average UV index in January: 6

The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).

Average cloud cover in January
Nationale, French Guiana
  • Average cloud cover in January: 53

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 25).

Average visibility in January
Nationale, French Guiana
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, August, September, October and November (10km).
The months with the lowest visibility are April, May, June, July and December (9km).

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