Climate and monthly weather forecastIracoubo, French Guiana
Climate and monthly weather forecast
The climate of Iracoubo
Iracoubo, a small town located in French Guiana, experiences an Af, or Tropical Rainforest, climate according to the Köppen climate classification. This climate type implies that Iracoubo experiences a significant amount of rainfall throughout the year, regardless of the season.Throughout the year, Iracoubo's temperatures remain quite stable with only minor fluctuations. The highest average temperatures, ranging from 28.3°C (82.9°F) to 30.9°C (87.6°F), take place between April and October, while the lowest average temperatures ranging from 24.2°C (75.6°F) to 25.1°C (77.2°F) occur between January and December. The highest relative humidity occurs from February through May and in December, with values between 82 and 84%. The lowest relative humidity levels are from August to October, falling to 77%.
The town experiences approximately 29.6 days of rainfall in May, the wettest month, with a total of 279mm (10.98"), while February exhibits the lowest number of rainfall with 129mm (5.08") over an average of 26.3 rainfall days.
Visibility stays consistent at 10km (6.2mi) throughout the year, while wind speed varies between 9.7km/h (6mph) to 15.3km/h (9.5mph). The UV index remains moderate from January to December, reaching a maximum of 7 from June through October.
The best time to visit Iracoubo
As Iracoubo experiences high temperatures combined with significant rainfall throughout the year, the best time to visit this tropical paradise would be during the period of reduced rainfall - specifically between August to October. This period is marked by lower levels of relative humidity at 77%, average lower temperatures of 24.5°C (76.1°F) to 25.1°C (77.2°F), and average maximum temperatures that rise to a radiant 30.9°C (87.6°F). These months also provide the highest duration of sunshine, 9.2 to 9.3 hours daily, that allows for a myriad of outdoor activities.The worst time to visit Iracoubo
The period between April to July might not be considered an ideal time to visit Iracoubo due to high amounts of rainfall. May in particular, sees the highest level of rainfall peaking at 279mm (10.98") over 29.6 days. The rains are coupled with the upper range of the year's maximum average temperatures between 28.3°C (82.9°F) to 29.5°C (85.1°F).Spring weather in Iracoubo
The concept of spring as described in temperate regions does not definitely apply to a tropical rainforest climate like Iracoubo. However, for the sake of distinction, the months of March to May can be considered as spring. This period records a high relative humidity, from 82 to 84% and a rising pattern of rainfall peaking at 279mm (10.98") in May. The average maximum temperatures vary from 28°C (82.4°F) to 28.5°C (83.3°F) whereas average minimum temperatures range from 24.7°C (76.5°F) to 24.9°C (76.8°F).Summer weather in Iracoubo
The period from June to August, provides a mix of warm weather and reducing rainfall. The average maximum temperature hits the year's peak at 30.9°C (87.6°F) in August, while average minimum temperature remains in the range of 24.5°C (76.1°F) to 24.8°C (76.6°F). July sees the highest UV index of 7, indicative of a fair amount of sunlight despite being a part of the wet season.Autumn weather in Iracoubo
Between September and November, rainfall declines further, with November reporting just 92mm (3.62") across 18.2 days. Concurrently, UV index remains at the highest level of 7. Average maximum temperature continues to be high, between 30.9°C (87.6°F) to 30.4°C (86.7°F) while minimum temperature ranges from 24.8°C (76.6°F) to 25.1°C (77.2°F).Winter weather in Iracoubo
Spanning December to February, "winter" months in Iracoubo experience high relative humidity, with the highest at 84% in February. Rainfall begins to rise again, culminating in 227mm (8.94") across 26 days in December. Average maximum temperatures dip slightly to 27.8°C (82°F) - 28.6°C (83.5°F) while average minimum temperatures range between 24.2°C (75.6°F) to 24.7°C (76.5°F).Weather in January
Transitioning straight from December, Iracoubo offers warm temperatures in January. Temperatures are nearly constant, making it enjoyable for visitors who prefer stable climates. The region begins the year with a modest level of rainfall with 161mm (6.34") recorded in January, giving this French Guiana town a pattern of tropical rainforest climate. Weather in January »Weather in February
The weather in February in Iracoubo remains quite similar to January, though there is a diminutive rise in both humidity and rainfall. It might seem livelier here, thanks to the additional daylight received in this month, making the days a bit longer. Weather in February »Weather in March
Transitioning into March, Iracoubo experiences a minor decrease in rainfall. However, the anticipation of April's showers keeps residents ready for continuous rains. Consequently, people can enjoy more sunny hours, as there is a minor increase in daily sunshine compared to February. Weather in March »Weather in April
April in Iracoubo demonstrates a noteworthy increase in rainfall from 129mm (5.08") in March to 203mm (7.99"). Residents and visitors see the showers as a characteristic of this month, complementing the overall tropical climate. Cloud percentage fluctuates slightly, but it doesn't intensely affect the visibility. Weather in April »Weather in May
In May, Iracoubo sees the year's highest rainfall average of 279mm (10.98"). Despite the increased rainfall, the intensity of the sun equally increases, extending the sunny hours. The wind speed drops a bit in comparison with April, offering gentle, soothing gusts. Weather in May »Weather in June
June presents a marked rainfall decrease, transitioning into the not-so-wet phase of the year in Iracoubo. So, this month is a respite for those not keen on rainfall. Even though temperatures slightly drop, the City still remains considerably warm. Weather in June »Weather in July
The weather in July in Iracoubo presents a continuation of the decreased rainfall trend seen in June. The humidity subsides slightly, bringing less moisture into the air. However, there is an additional sunny hour per day, delighting those who enjoy basking. Weather in July »Weather in August
August showcases the least amount of rainfall of the year in Iracoubo, with just 71mm (2.8") recorded for the month. The scarcity of showers promotes fairly clear skies and stable weather, making it top-rated for outdoor activities. Weather in August »Weather in September
Iracoubo in September sees a further decrease in rainfall and experiences the most sunshine, being bathed in sun for 9.3 hours every day. September is noted for the least number of rainy days, marking it a dry period. There is a drop in humidity, thereby making the City less muggy. Weather in September »Weather in October
October bears a stark resemblance to September in Iracoubo, albeit with a minimal increase in rainfall. The weather stays warm, maintaining an atmosphere favourable for outdoor activities. Sunshine hours remain high this month, allowing plenty of daylight for both tourists and residents to enjoy. Weather in October »Weather in November
November ushers in a noticeable rise in rainfall, with 92mm (3.62") compared to 33mm (1.3") in October in Iracoubo. Despite the increase in precipitation, temperatures remain fairly constant. A decrease in sunshine hours and increasing humidity signal the start of the wetter season. Weather in November »Weather in December
By December, Iracoubo is well into the rainy season, with rainfall measuring at an impressive 227mm (8.94") for the month. As the year comes to a close, the weather turns more towards a tropical rainforest presentation. The decrease in the sunshine duration and increasing cloud cover make the days slightly dimmer. Weather in December »Updated: Jan 31, 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 Iracoubo, during the entire year, the rain falls for 288 days and collects up to 1773mm (69.8") of precipitation.
January through June and December, with an average maximum UV index of 6, are months with the lowest UV index.
Iracoubo's February weather reaches an average high of 27.5°C (81.5°F) and an average low of 24.3°C (75.7°F), making it the coldest month.
February and May, with an average relative humidity of 84%, are most humid months.
February has the least sunshine of the year in Iracoubo, with an average of 5.8h of sunshine.
The month with the most rainfall is May, when the rain falls for 29.6 days and typically aggregates up to 279mm (10.98") of precipitation.
The month with the longest days in Iracoubo, French Guiana, is June, with an average of 12h and 24min of daylight.
The months with the highest UV index are July through November, with an average maximum UV index of 7.
September and October, with an average high-temperature of 30.9°C (87.6°F), are warmest months.
The months with the lowest humidity are September and October, with an average relative humidity of 77%.
September is the month with the least rainfall. Rain falls for 14.3 days and accumulates 29mm (1.14") of precipitation.
The month with the most sunshine in Iracoubo, French Guiana, is September, with an average of 9.3h of sunshine.
December has the shortest days of the year, with an average of 11h and 48min of daylight.
Iracoubo does not observe Daylight Saving Time (DST). -03 timezone is used throughout the entire year.
Average temperature
Iracoubo, French Guiana
The warmest months (with the highest average high temperature) are September and October (30.9°C).
The month with the lowest average high temperature is February (27.5°C).
The month with the highest average low temperature is November (25.1°C).
The coldest month (with the lowest average low temperature) is January (24.2°C).
Average pressure
Iracoubo, French Guiana
- Average pressure in January:
1011.9mbar - Average pressure in February:
1011.8mbar - Average pressure in March:
1012mbar - Average pressure in April:
1012mbar - Average pressure in May:
1012.3mbar - Average pressure in June:
1013.1mbar
- Average pressure in July:
1013.1mbar - Average pressure in August:
1012.6mbar - Average pressure in September:
1012mbar - Average pressure in October:
1010.6mbar - Average pressure in November:
1009.7mbar - Average pressure in December:
1010.9mbar
The months with the highest atmospheric pressure are June and July (1013.1mbar).
The month with the lowest atmospheric pressure is November (1009.7mbar).
Average wind speed
Iracoubo, French Guiana
- Average wind speed in January:
14.3km/h - Average wind speed in February:
15.3km/h - Average wind speed in March:
14.9km/h - Average wind speed in April:
13.8km/h - Average wind speed in May:
12.8km/h - Average wind speed in June:
10.3km/h
- Average wind speed in July:
9.7km/h - Average wind speed in August:
11.3km/h - Average wind speed in September:
12.7km/h - Average wind speed in October:
12.6km/h - Average wind speed in November:
12.7km/h - Average wind speed in December:
13.6km/h
The windiest month (with the highest average wind speed) is February (15.3km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity
Iracoubo, French Guiana
The months with the highest relative humidity are February and May (84%).
The months with the lowest relative humidity are September and October (77%).
Average rainfall
Iracoubo, French Guiana
- Average rainfall in January:
161mm - Average rainfall in February:
159mm - Average rainfall in March:
129mm - Average rainfall in April:
203mm - Average rainfall in May:
279mm - Average rainfall in June:
244mm
The wettest month (with the highest rainfall) is May (279mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days
Iracoubo, French Guiana
- Average rainfall days in January:
27.6 days - Average rainfall days in February:
26.3 days - Average rainfall days in March:
27.8 days - Average rainfall days in April:
27.3 days - Average rainfall days in May:
29.6 days - Average rainfall days in June:
28.3 days
- Average rainfall days in July:
27.4 days - Average rainfall days in August:
20.9 days - Average rainfall days in September:
14.3 days - Average rainfall days in October:
14.3 days - Average rainfall days in November:
18.2 days - Average rainfall days in December:
26 days
The month with the highest number of rainy days is May (29.6 days).
The months with the least rainy days are September and October (14.3 days).
Average daylight / Average sunshine
Iracoubo, French Guiana
- Average daylight in January:
11h and 48min - 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:
7h and 12min - Average sunshine in February:
5h and 48min - Average sunshine in March:
6h and 12min - Average sunshine in April:
6h and 24min - Average sunshine in May:
6h and 54min - Average sunshine in June:
7h and 42min
- Average sunshine in July:
8h and 24min - Average sunshine in August:
8h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
9h and 12min - Average sunshine in November:
8h and 48min - Average sunshine in December:
7h and 24min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days
Iracoubo, French Guiana
- Average sunshine days in January:
1.4 days - Average sunshine days in February:
1.1 days - Average sunshine days in March:
1.1 days - Average sunshine days in April:
1.1 days - Average sunshine days in May:
0.6 days - Average sunshine days in June:
0.8 days
- Average sunshine days in July:
1.5 days - Average sunshine days in August:
5.8 days - Average sunshine days in September:
11.6 days - Average sunshine days in October:
13.2 days - Average sunshine days in November:
9.1 days - Average sunshine days in December:
3.2 days
The month with the most sunshine days is October (13.2 days).
The month with the least sunshine days is May (0.6 days).
Average UV index
Iracoubo, 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
Iracoubo, French Guiana
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility
Iracoubo, French Guiana
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
