Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The transition from December to January sees average high-temperatures adjusting to a warm 29.7°C (85.5°F), from a not significantly different 30.8°C (87.4°F). Grand Usine observes an average low-temperature of 20.8°C (69.4°F) during January.Heat index
January's average heat index is computed to be a very hot 39°C (102.2°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.For clarity, heat index numbers account for light winds and areas under shade. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In January, the average relative humidity is 87%.Rainfall
In Grand Usine, French Guiana, in January, it is raining for 26.8 days, with typically 86mm (3.39") of accumulated precipitation. In Grand Usine, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.Daylight
In Grand Usine, the average length of the day in January is 11h and 57min.On the first day of January in Grand Usine, sunrise is at 06:37 and sunset at 18:33. On the last day of the month, sunrise is at 06:45 and sunset at 18:44 -03.
Sunshine
The average sunshine in January is 4.9h.UV index
January, March and December, with an average maximum UV index of 5, are months with the lowest UV index in Grand Usine. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 5 in January translates into these instructions:
Undertake protective steps - Preventing sun damage is advised. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Grand Usine in January?
What is the average humidity in January in Grand Usine?
How much does it rain in Grand Usine in January?
How many hours of daylight does Grand Usine have in January?
When are sunrise and sunset in January in Grand Usine?
How many hours of sunshine does Grand Usine have in January?
What is the month with the lowest UV index in Grand Usine?
What is the UV index intensity in January in Grand Usine?
Average temperature in January
Grand Usine, French Guiana
- Average high temperature in January: 29.7°C
The warmest month (with the highest average high temperature) is October (34.9°C).
The month with the lowest average high temperature is February (29.3°C).
- Average low temperature in January: 20.8°C
The month with the highest average low temperature is May (21.9°C).
The coldest months (with the lowest average low temperature) are August and September (20.5°C).
Average pressure in January
Grand Usine, French Guiana
- Average pressure in January: 1011.8mbar
The months with the highest atmospheric pressure are June and July (1013mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in January
Grand Usine, French Guiana
- Average wind speed in January: 5.1km/h
The windiest months (with the highest average wind speed) are February, March and November (5.3km/h).
The calmest month (with the lowest average wind speed) is July (4.2km/h).
Average humidity in January
Grand Usine, French Guiana
- Average humidity in January: 87%
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Grand Usine, French Guiana
- Average rainfall in January: 86mm
The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).
Average rainfall days in January
Grand Usine, French Guiana
- Average rainfall days in January: 26.8 days
The months with the highest number of rainy days are January and March (26.8 days).
The month with the least rainy days is October (10.4 days).
Average daylight in January /
Average sunshine in January
Grand Usine, French Guiana
- Average daylight in January: 12h and 0min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in January: 4h and 5min
The months with the most sunshine are September and October (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Grand Usine, French Guiana
- Average sunshine days in January: 2.3 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is February (1.8 days).
Average UV index in January
Grand Usine, French Guiana
- Average UV index in January: 5
The months with the highest UV index are August, September, October and November (UV index 7).
The months with the lowest UV index are January, March and December (UV index 5).
Average cloud cover in January
Grand Usine, French Guiana
- Average cloud cover in January: 76
The month with the most cloud cover is February (Cloud cover 81).
The month with the least cloud cover is October (Cloud cover 44).
Average visibility in January
Grand Usine, French Guiana
- Average visibility in January: 6km
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).
Grand Usine, French Guiana
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