Yearly & Monthly weather - Bienvenue, French Guiana

The climate of Bienvenue

Bienvenue, French Guiana, lies within the Köppen climate classification of Af, also known as the Tropical Rainforest climate. This particular climate category is characteristic of persistent and consistent heavy rainfall throughout the year, coupled with high temperatures. There is no particular dry season, and the rainforest climate extends monthly rainfall beyond 60mm (2.36").

The highest temperatures in Bienvenue typically peak in October at 34.3°C (93.7°F), while the lowest temperatures recorded are usually in January and December at 22°C (71.6°F). Humidity levels fluctuate slightly over the year, relatively high throughout with the highest seen in May at 91% and the lowest in September at 76%.

With the Tropical Rainforest climate, Bienvenue receives signficant rainfall throughout the year. The highest rainfall occurs in May with 195mm (7.68"), while the least precipitation is in September with 21mm (0.83"), a considerable disparity. The number of rainfall days also follows a similar pattern with the maximum days of rainfall observed in May at 28.9 days and the minimum in September at 12.5 days.

An interesting observation is that despite the persistent rainfall, Bienvenue also experiences considerable sunshine hours which peak in October at 8.7 hours and diminish to the lowest in February at 4.0 hours. The city has the most sunshine days in October with 16.3 days and the least in April with 2.7 days.

The best time to visit Bienvenue

Based on the weather parameters of Bienvenue, the most favorable time to visit would be between September and November. The temperatures during this period range from 32.3°C (90.1°F) to 34.3°C (93.7°F), providing pleasantly warm conditions, especially for outdoor activities. Additionally, these months also record the lowest humidity levels, ranging from 76% to 78%, making the weather more comfortable overall.

Moreover, these months correspond to the period with the least number of rainfall days and the lowest amount of rainfall, with September recording only 12.5 rainfall days and 21mm (0.83") of precipitation. Tourists can also enjoy prolonged hours of sunshine, especially in October and November, when the city experiences between 8.7 to 8.8 hours of sunshine.

The worst time to visit Bienvenue

In contrast, the period from April to June can be considered the least favorable time to travel to Bienvenue. This period characteristically has higher rainfall, with downpours reaching a peak at 195mm (7.68") in May. Consequently, April, May, and June have an elevated number of rainfall days, peaking in May at 28.9.

Humidity is also rather high during these months, with May registering the highest levels at 91%. The temperatures do not see a significant drop; however, the high humidity and frequent showers can disrupt outdoor activities and sightseeing plans. Hours of sunshine are also restricted during this period, with a low of 4.8 hours in April.

Spring weather in Bienvenue

Spring in Bienvenue occurs from March to May. The temperatures during spring range from 28.8°C (83.8°F) at the start of spring and rise to 30.3°C (86.5°F) by May. Humidity, along with temperatures, also tends to increase towards the end of spring, going up to 91% in May.

The rainfall during this season ranges from 86mm (3.39") to a high of 195mm (7.68") in May, with an increase in the number of rainfall days from March's 25.9 to May's 28.9. Despite the heavy rainfall, the city still receives a fair amount of sunshine, with hours ranging from 4.6 in March to 5.5 by the end of spring.

Summer weather in Bienvenue

Bienvenue's summer months are June, July, and August. Even though it's summer, rainfall is moderate, ranging from 60mm (2.36") to 99mm (3.9") during this period. Notably, the number of rainfall days decreases from 26.6 in June to 21.1 by August. Humidity levels also dip during this season, reaching a low of 80% in August.

During summer, temperatures maintain a pretty steady range, with the highest being 32.3°C (90.1°F) in August. Hours of sunshine see a marked increase during this season, offering between 6.8 to 7.4 hours of daylight.

Autumn weather in Bienvenue

The months of September, October, and November represent autumn in Bienvenue, French Guiana. It is the period when the city experiences the highest temperatures, with the peak in October at 34.3°C (93.7°F). However, the level of humidity experiences a downward trend, reaching a low of 75% in October.

Rainfall during autumn reduces significantly, recording the lowest in the year at 21mm (0.83") in September. Correspondingly, the number of rainfall days also diminishes, with the minimum of 12.5 days observed in September. Another feature of this season is the increase in sunshine, with the highest hours noted in October at 8.7 hours.

Winter weather in Bienvenue

Bienvenue's mild winter season covers December, January, and February. During these months, the temperature levels drop slightly and range between 28.4°C (83.1°F) and 27.9°C (82.2°F). But with high humidity levels, specifically during January and February at 90%, winter can still feel warm and humid.

The total rainfall during winter goes from 146mm (5.75") in December, and gradually decreases to 90mm (3.54") by February. The number of rainfall days is significantly high, with 25.4 days in December. Regarding sunlight, the city experiences fewer hours of sunshine during winter, especially in February with only 4.0 hours.

Weather in January

Bienvenue, French Guiana experiences a predominant wet weather pattern in January. A robust amount of rainfall, peaking at 92mm (3.62"), is accompanied by a high relative humidity of 88%, which saturates the city with moisture. Weather in January »

Weather in February

Shifting gears slightly in February, Bienvenue sees a mild decrease in rainfall from the previous month. The average temperatures stay fairly consistent, with the city experiencing a warmth characteristic of French Guiana's tropical climate. Weather in February »

Weather in March

March brings with it a steady continuation of Bienvenue’s tropical climate characterized by noticeable levels of rainfall and humidity. Despite a drop in average rainfall to 86mm (3.39"), the city remains moist, witnessing an almost imperceptible change in relative humidity. Weather in March »

Weather in April

Bienvenue witnesses a surge in rainfall in April as it soars to 142mm (5.59"), ensuring a significant moistening of the city's landscape. The increase in precipitation is balanced with consistent temperatures, marking a stable transition from the preceding month. Weather in April »

Weather in May

May marks a record peak in rainfall with a staggering 195mm (7.68"), resulting in Bienvenue experiencing the epitome of its wet season. The weather oscillates between damp, warm atmospheres and periods of brilliant sunshine. The persistent clouds offer respite from the intensified brightness of sunlight, keeping the city's temperature at a comforting level. Weather in May »

Weather in June

A transition is observed in June, with a decrease in rainfall, paving the way for the city’s gradual journey from damp conditions towards its drier part of the year. The slight drop in average temperature coupled with a reduced magnitude of rainfall provides for somewhat cooler days. Weather in June »

Weather in July

July brings a remarkable drop in both humidity and rainfall, indicating a shift towards a drier environment in Bienvenue. Sunshine hours increase slightly, inviting more sunlight into the cityscape. The UV index rises to 7, implying an intensified sun's energy, reminding residents to adhere to sun protection measures. Weather in July »

Weather in August

As the drier part of the year continues into August, Bienvenue witnesses a substantial reduction in rainfall, reaching an average meager 60mm (2.36"). The city basks under an increase in sunshine, which is now at its highest for the year, illuminating the city for longer periods. Weather in August »

Weather in September

The city of Bienvenue ushers in the month of September with a relative dryness, characterized by a further drop in rainfall to a mere 21mm (0.83"). The gradual decrease in cloud coverage uncloaks the sun, exposing the city to increased periods of sunlight. Weather in September »

Weather in October

October maintains the consistent pattern of the preceding month, with an almost parallel quantity of rainfall. The weather remains steadily warm, with temperatures deviating minimally from September. While the daylight hours begin to recede slightly, the actual duration of sunshine dwindles minimally. Weather in October »

Weather in November

A noticeable increase in average rainfall to 45mm (1.77") in November indicates Bienvenue’s transition from the dry to the wet season. As the rain clouds begin to regroup, the relative humidity records a rise, heralding a return to a more moist environment. Weather in November »

Weather in December

December dishes out the wet season in full swing, with a surge in rainfall to 146mm (5.75"). As the year comes to a close, the city is lapped by increasing downpour, echoing the early days of the year. The return to high rainfall is complemented by rising humidity levels, enveloping Bienvenue in a distinctly moist climate. Weather in December »

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How many days does it rain in Bienvenue?

Throughout the year, in Bienvenue, French Guiana, there are 270.6 rainfall days, and 1131mm (44.53") of precipitation is accumulated.

What are the months with the lowest UV index in Bienvenue?

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index.

What part of the year is the coldest in Bienvenue?

February, recording an average high temperature of 27.9°C (82.2°F) and a low temperature of 22.3°C (72.1°F), is Bienvenue's coldest month.

What is the month with the least sunshine in Bienvenue?

February has the least sunshine of the year in Bienvenue, with an average of 4h of sunshine.

What is the most humid month in Bienvenue?

With an average relative humidity of 91%, May is the most humid month in Bienvenue, French Guiana.

What is the rainiest month in Bienvenue?

The month with the most rainfall in Bienvenue, French Guiana, is May, when the rain falls for 28.9 days and typically aggregates up to 195mm (7.68") of precipitation.

When are the longest days in Bienvenue?

With an average of 12h and 18min of daylight, June has the longest days of the year.

What is the month with the highest UV index in Bienvenue?

The months with the highest UV index in Bienvenue, French Guiana, are August through October, with an average maximum UV index of 7.

What is the driest month in Bienvenue?

The month with the least rainfall in Bienvenue is September, when the rain falls for 12.5 days and typically collects 21mm (0.83") of precipitation.

What month has the most sunshine in Bienvenue?

The month with the most sunshine in Bienvenue is September, with an average of 8.8h of sunshine.

What part of the year is the hottest in Bienvenue?

The average temperatures in Bienvenue reach their apex in October, averaging 34.3°C (93.7°F) at the high end and 22.2°C (72°F) at the low end.

What is the least humid month in Bienvenue?

With an average relative humidity of 75%, October is the least humid month in Bienvenue, French Guiana.

What is the month with the shortest days in Bienvenue?

The month with the shortest days in Bienvenue, French Guiana, is December, with an average of 11h and 54min of daylight.

Is there Daylight Saving Time (DST) in Bienvenue?

Bienvenue does not utilize Daylight Saving Time (DST). -03 timezone is used over the entire year.

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Year J F M A M J J A S O N D

Average temperature
Bienvenue, French Guiana

Average high temperature in January:
28.4°C
Average high temperature in February:
27.9°C
Average high temperature in March:
28.8°C
Average high temperature in April:
28.8°C
Average high temperature in May:
28.8°C
Average high temperature in June:
29.3°C

Average high temperature in July:
30.3°C
Average high temperature in August:
32.3°C
Average high temperature in September:
33.7°C
Average high temperature in October:
34.3°C
Average high temperature in November:
33°C
Average high temperature in December:
29.8°C

The warmest month (with the highest average high temperature) is October (34.3°C).
The month with the lowest average high temperature is February (27.9°C).

Average low temperature in January:
22°C
Average low temperature in February:
22.3°C
Average low temperature in March:
22.2°C
Average low temperature in April:
22.4°C
Average low temperature in May:
22.3°C
Average low temperature in June:
21.8°C

Average low temperature in July:
21.3°C
Average low temperature in August:
21.7°C
Average low temperature in September:
21.8°C
Average low temperature in October:
22.2°C
Average low temperature in November:
22.2°C
Average low temperature in December:
22°C

The month with the highest average low temperature is April (22.4°C).
The coldest month (with the lowest average low temperature) is July (21.3°C).

Average pressure
Bienvenue, French Guiana

Average pressure in January:
1011.7mbar
Average pressure in February:
1011.5mbar
Average pressure in March:
1011.8mbar
Average pressure in April:
1011.8mbar
Average pressure in May:
1012.3mbar
Average pressure in June:
1013.1mbar

Average pressure in July:
1013.2mbar
Average pressure in August:
1012.8mbar
Average pressure in September:
1012.1mbar
Average pressure in October:
1010.6mbar
Average pressure in November:
1009.8mbar
Average pressure in December:
1010.8mbar

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
Bienvenue, French Guiana

The windiest month (with the highest average wind speed) is October (6.1km/h).
The calmest month (with the lowest average wind speed) is June (4.2km/h).

Average humidity
Bienvenue, French Guiana

The month with the highest relative humidity is May (91%).
The month with the lowest relative humidity is October (75%).

Average rainfall
Bienvenue, French Guiana

The wettest month (with the highest rainfall) is May (195mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days
Bienvenue, French Guiana

Average rainfall days in January:
25.4 days
Average rainfall days in February:
22.9 days
Average rainfall days in March:
25.9 days
Average rainfall days in April:
26.5 days
Average rainfall days in May:
28.9 days
Average rainfall days in June:
26.6 days

Average rainfall days in July:
26.8 days
Average rainfall days in August:
21.1 days
Average rainfall days in September:
12.5 days
Average rainfall days in October:
12 days
Average rainfall days in November:
16.9 days
Average rainfall days in December:
25.1 days

The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (12 days).

Average daylight / Average sunshine
Bienvenue, French Guiana

Average daylight in January:
12h and 0min
Average daylight in February:
12h and 0min
Average daylight in March:
12h and 1min
Average daylight in April:
12h and 1min
Average daylight in May:
12h and 2min
Average daylight in June:
12h and 2min

Average daylight in July:
12h and 2min
Average daylight in August:
12h and 1min
Average daylight in September:
12h and 1min
Average daylight in October:
12h and 0min
Average daylight in November:
12h and 0min
Average daylight in December:
11h and 5min

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:
5h and 1min
Average sunshine in February:
4h and 0min
Average sunshine in March:
4h and 4min
Average sunshine in April:
4h and 5min
Average sunshine in May:
5h and 3min
Average sunshine in June:
6h and 5min

Average sunshine in July:
7h and 2min
Average sunshine in August:
8h and 2min
Average sunshine in September:
8h and 5min
Average sunshine in October:
8h and 4min
Average sunshine in November:
8h and 0min
Average sunshine in December:
5h and 5min

The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

Average sunshine days
Bienvenue, French Guiana

Average sunshine days in January:
4.8 days
Average sunshine days in February:
4.9 days
Average sunshine days in March:
4.2 days
Average sunshine days in April:
2.7 days
Average sunshine days in May:
1.8 days
Average sunshine days in June:
2 days

Average sunshine days in July:
2.5 days
Average sunshine days in August:
6.4 days
Average sunshine days in September:
13.5 days
Average sunshine days in October:
16.3 days
Average sunshine days in November:
10.7 days
Average sunshine days in December:
4.5 days

The month with the most sunshine days is October (16.3 days).
The month with the least sunshine days is May (1.8 days).

Average UV index
Bienvenue, French Guiana

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

Average cloud cover
Bienvenue, French Guiana

The month with the most cloud cover is February (Cloud cover 78).
The month with the least cloud cover is October (Cloud cover 46).

Average visibility
Bienvenue, French Guiana

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

Climate and monthly weather forecastBienvenue, French Guiana

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