Climate and monthly weather forecastApatou, French Guiana
Climate and monthly weather forecast
The climate of Apatou
Apatou, found in French Guiana, predominantly experiences a Köppen Climate Classification of Af, also known as a Tropical Rainforest climate. Sitting near the equator, this location enjoys a consistently warm temperature year-round and lacks a dry season, as rainfall is copious every month.Yearly averages reflect the high temperatures in Apatou with a high monthly temperature fluctuating between 29.1°C (84.4°F) in February to 33.1°C (91.6°F) in October. The low monthly temperature has less variance, ranging from 22.2°C (72°F) in July to 23.3°C (73.9°F) in May. Similarly, the humidity rate shows little change, with average relative humidity lying between 82% in January and March to 88% in June.
Despite being a rainforest climate, Apatou does have some variability in its precipitation levels. Monthly rainfall ranges from 23mm (0.91") in October to 137mm (5.39") in May, spreading across 11.5 days to 28 days, respectively. When observing daylight hours, there is only a small fluctuation from 11.8 hours in December to 12.4 hours from May to July. Sunshine hours exhibit more disparity, ranging from 5.1 hours in February to 9.1 hours in September.
The UV index indicates a constant exposure amount, with monthly averages always above 6. The range of average visibility remains stable at 8 kilometers in May to 9 kilometers from February to April. Distinctively, the average wind speed decreases from 9.1km/h (5.7mph) in January and April to 6.4km/h (4mph) in July.
The Best Time to Visit Apatou
For those wanting to enjoy the most sun, the ideal time to visit Apatou is between August and October. In these months, the average daylight hours are abundant, coupled with the highest sunshine hours. During this period, the rainfall amount and number of rain days are at their fewest, contributing to clearer skies for outdoor activities.The Worst Time to Visit Apatou
Visiting Apatou between May and July might prove less appealing to visitors. Despite being the period with the longest daylight hours, these months also record the highest humidity and rainfall. In particular, May tends to be the wettest month, making it a less favorable time for tourists desiring to perform outdoor activities.Spring Weather in Apatou
Spring, spanning March to May, maintains consistently high temperatures, from a high of 29.7°C (85.5°F) in March to a lower limit of 23.1°C (73.6°F) in April. The number of rainfall days during this period increases, reaching a peak in May. Despite this, daylight hours increase and sunshine hours remain steady, indicating that the rain is intermittent rather than constant.Summer Weather in Apatou
During the months of June to August, Apatou witnesses the lowest average wind speeds, with July recording the lowest at 6.4km/h (4mph). Despite fewer wind gusts and lower humidity, the rainfall remains high during this period. Nonetheless, the plentiful sunshine, especially in July and August, allows visitors to enjoy outdoor activities.Autumn Weather in Apatou
Autumn in Apatou, from September to November, offers favorable climatic conditions. While the UV index remains moderately high, it’s coupled with the highest average temperatures near 33°C (91.4°F) and the lowest rainfall levels of the year. The onset of these months brings fewer cloudy days, improving visibility and allowing an unobstructed view of the great outdoors.Winter Weather in Apatou
The winter months from December to February in Apatou witness a decrease in the average wind speed, coupled with a gradual decrease in temperature. However, the amount of rainfall and cloud percentage both increase during this period. Despite the higher humidity and cloud cover, these months also report sufficient sunshine hours, appropriate for leisure activities.Weather in January
Kicking off the year in Apatou, French Guiana, the climate stays somewhat constant, resembling its neighboring month of February. The weather, observable in little variations in temperature, is characterized by moderate rain totaling 54mm (2.13") across 23.6 days. Weather in January »Weather in February
Akin to January, February in Apatou experiences a harmonious transition of weather patterns with minor fluctuations in its climatic parameters. This retains the temperature at a uniform level, aiding the growth of evergreen tropical flora. Weather in February »Weather in March
March progresses with a slight decrease in rainfall to 46mm (1.81"), making it drier than the forecasted months of April and May. Justifying its tropical monsoon classification, Apatou embraces warmer days paving the way for vibrant sunsets before the impending high rainfall months. Weather in March »Weather in April
April marks the initial phase of an increase in monthly precipitation with 91mm (3.58"), almost doubling from the preceding March. A minor increase in temperature, alongside higher rainfall, enhances the city's tropical climate, intensifying the greenery across Apatou. Weather in April »Weather in May
May in Apatou witnesses the highest average rainfall of the year, at 137mm (5.39") over 28 days, comparatively more significant than the previous and coming months. The lush city, rich in its diverse plant life, relishes the heavy showers, framing a magnificent green canvas. Weather in May »Weather in June
June in Apatou present a slight respite from rainfall, dropping to 135mm (5.31") while maintaining similar weather characteristics as its nearest months. While the intensity of showers reduces slightly from May, the climate remains prominently wet, contributing to the region's biodiversity. Weather in June »Weather in July
On entering July, Apatou experiences further reductions in rainfall, receiving only 107mm (4.21") during the month. The tropical monsoon climate stretches into its home stretch, still nurturing every flora and fauna with abundant water. Weather in July »Weather in August
August brings a notable decrease in rainfall, receding to 66mm (2.6"), much lower than the dramatic showers of the wet season. Cloud cover wanes appreciably, allowing an increase in sunshine hours and a subsequent decline in overall atmospheric humidity. Weather in August »Weather in September
September witnesses a substantial drop in rainfall to 26mm (1.02"), the lowest observed in Apatou across the year. Due to lesser cloud cover, the city experiences the highest average sunshine hours, revealing the city under clearer skies. Weather in September »Weather in October
October in Apatou maintains the meager trend of rainfall, with a slight increase to 23mm (0.91") in comparison to September. The substantial sunshine hours persist, marking the month with predominantly clear and sunny days. The cityscape, accentuated by the sunlight, demonstrates the dynamic colors of nature, elegant in its post-monsoon charm. Weather in October »Weather in November
November in Apatou hosts an uptick in rainfall to 58mm (2.28"), yet is less wet than December, and remains manageable for routine life. A slight reduction in sunshine hours signifies an increment in cloud cover across the city's sky. Weather in November »Weather in December
December, wrapping up the year in Apatou, French Guiana, ushers more rainfall, higher than the previous month of November. With relatively more cloud cover than in November, sunlight becomes a lesser regular feature. The temperatures maintain the standard ranges, while humidity increases, providing ample moisture for the surrounding greenery. Weather in December »Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Apatou, during the entire year, the rain falls for 253 days and collects up to 878mm (34.57") of precipitation.
The months with the lowest UV index are January through June and December, with an average maximum UV index of 6.
With average high and low temperatures of 29.1°C (84.4°F) and 22.6°C (72.7°F) respectively, February is Apatou's coldest month.
February has the least sunshine of the year, with an average of 5.1h of sunshine.
The month with the most rainfall is May, when the rain falls for 28 days and typically aggregates up to 137mm (5.39") of precipitation.
With an average relative humidity of 88%, June is the most humid month.
June has the longest days of the year, with an average of 12h and 24min of daylight.
July through November, with an average maximum UV index of 7, are months with the highest UV index.
The month with the most sunshine is September, with an average of 9.1h of sunshine.
The month of October sees the average highest temperatures, reaching 33.1°C (91.6°F) at the peak and 22.8°C (73°F) at the low.
The least humid month is October, with an average relative humidity of 77%.
The month with the least rainfall in Apatou is October, when the rain falls for 11.6 days and typically collects 23mm (0.91") of precipitation.
With an average of 11h and 48min of daylight, December has the shortest days of the year.
Apatou does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature
Apatou, French Guiana
The warmest month (with the highest average high temperature) is October (33.1°C).
The month with the lowest average high temperature is February (29.1°C).
The month with the highest average low temperature is May (23.3°C).
The coldest month (with the lowest average low temperature) is July (22.2°C).
Average pressure
Apatou, French Guiana
- Average pressure in January:
1012mbar - Average pressure in February:
1011.8mbar - Average pressure in March:
1012mbar - Average pressure in April:
1011.9mbar - Average pressure in May:
1012.2mbar - Average pressure in June:
1012.9mbar
- Average pressure in July:
1012.9mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1011.6mbar - Average pressure in October:
1010.3mbar - Average pressure in November:
1009.5mbar - Average pressure in December:
1010.9mbar
The months with the highest atmospheric pressure are June and July (1012.9mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).
Average wind speed
Apatou, French Guiana
- Average wind speed in January:
9.1km/h - Average wind speed in February:
9.5km/h - Average wind speed in March:
9.5km/h - Average wind speed in April:
9.1km/h - Average wind speed in May:
8.2km/h - Average wind speed in June:
6.9km/h
- Average wind speed in July:
6.4km/h - Average wind speed in August:
6.8km/h - Average wind speed in September:
7.7km/h - Average wind speed in October:
8.2km/h - Average wind speed in November:
8.4km/h - Average wind speed in December:
8.7km/h
The windiest months (with the highest average wind speed) are February and March (9.5km/h).
The calmest month (with the lowest average wind speed) is July (6.4km/h).
Average humidity
Apatou, French Guiana
The month with the highest relative humidity is June (88%).
The month with the lowest relative humidity is October (77%).
Average rainfall
Apatou, French Guiana
- Average rainfall in January:
54mm - Average rainfall in February:
51mm - Average rainfall in March:
46mm - Average rainfall in April:
91mm - Average rainfall in May:
137mm - Average rainfall in June:
135mm
The wettest month (with the highest rainfall) is May (137mm).
The driest month (with the least rainfall) is October (23mm).
Average rainfall days
Apatou, French Guiana
- Average rainfall days in January:
23.6 days - Average rainfall days in February:
23.7 days - Average rainfall days in March:
25.3 days - Average rainfall days in April:
24.6 days - Average rainfall days in May:
28 days - Average rainfall days in June:
25.6 days
- Average rainfall days in July:
24.5 days - Average rainfall days in August:
19 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
13.7 days - Average rainfall days in December:
21.9 days
The month with the highest number of rainy days is May (28 days).
The month with the least rainy days is September (11.5 days).
Average daylight / Average sunshine
Apatou, French Guiana
- Average daylight in January:
11h and 54min - Average daylight in February:
12h and 0min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 12min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 24min
- Average daylight in July:
12h and 24min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 54min - Average daylight in December:
11h and 48min
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 48min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
5h and 6min - Average sunshine in March:
5h and 24min - Average sunshine in April:
5h and 30min - Average sunshine in May:
5h and 54min - Average sunshine in June:
7h and 6min
- Average sunshine in July:
8h and 0min - Average sunshine in August:
8h and 42min - Average sunshine in September:
9h and 6min - Average sunshine in October:
8h and 42min - Average sunshine in November:
7h and 54min - Average sunshine in December:
6h and 36min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days
Apatou, French Guiana
- Average sunshine days in January:
4.8 days - Average sunshine days in February:
3.1 days - Average sunshine days in March:
2.9 days - Average sunshine days in April:
2.7 days - Average sunshine days in May:
1.8 days - Average sunshine days in June:
3 days
- Average sunshine days in July:
4.5 days - Average sunshine days in August:
8.7 days - Average sunshine days in September:
14.6 days - Average sunshine days in October:
16 days - Average sunshine days in November:
13.4 days - Average sunshine days in December:
6.4 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is May (1.8 days).
Average UV index
Apatou, French Guiana
The months with the highest UV index are July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June and December (UV index 6).
Average cloud cover
Apatou, French Guiana
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility
Apatou, French Guiana
The months with the highest visibility are February, March and April (9km).
The months with the lowest visibility are June, July and August (7km).
