Climate and monthly weather forecastBostok, French Guiana
Climate and monthly weather forecast
The climate of Bostok
Bostok, located in French Guiana, falls under the Af zone of the Köppen climate classification. This classification implies a predominance of the Tropical rainforest climate, characterized by high humidity and temperature, accompanied by copious rainfall. Analyzing the weather patterns throughout the year, one can observe minimal changes in temperature, with the high, on average, ranging from as low as 29.3°C (84.7°F) to a maximum of 34.9°C (94.8°F), while the lows hover between 20.5°C (68.9°F) and 21.9°C (71.4°F). Humidity levels remain high throughout the year from an average low of 72%, up to a maximum average of 90% as expected in a tropical climate.Rainfall is a constant feature in Bostok with the highest recorded monthly average of 192mm (7.56") in May. The year commences with a high of 86mm (3.39") in January, rises to its peak mid-year before decreasing to a lowest record of 21mm (0.83") in October. Months following October, however, witness an increase in rain levels, culminating in 112mm (4.41") by December. Despite the constant rains, on average, Bostok has sunshine for about 5.6 to 8.8 hours per day, with the longest days recorded between August and October. The UV index ranges from 5 to 7, while wind speeds average between 4.2km/h (2.6mph) to 5.3km/h (3.3mph), which indicates a generally calm atmosphere.
The best time to visit Bostok
Based on climate data, the ideal time to visit Bostok is between late September to early November. This period experiences the least rainfall ranging from 21mm (0.83") to 43mm (1.69") and high sunshine hours. It is the only time when the fraction of cloudy days falls below 50%.The worst time to visit Bostok
The worst time to visit Bostok would be from April to June when the region experiences its peak monsoon season. The quantity of rainfall averages around 148mm (5.83") per month, cloud cover is at its highest, limiting sunshine hours to 4.9 hours per day, and visibility is reduced to 5km (3.1mi) further worsening conditions for tourists.Spring weather in Bostok
In Bostok, spring occurs from September to November. During these months, rainfall decreases significantly with record lows of 21mm (0.83") to 43mm (1.69"). Sunshine hours are at their peak from 8.8 hours in September down to 8.2 hours by November. Also, temperatures range from an average high of 34.9°C (94.8°F) to 30.8°C (87.4°F) and lows from 20.8°C (69.4°F) to 20.9°C (69.6°F).Summer weather in Bostok
Bostok's summer is from December to February. The weather during this period witnesses increased rainfall, peaking at 86mm (3.39") in December to 81mm (3.19") by February. Temperatures fluctuate minimally from lows of 20.8°C (69.4°F) to 21.2°C (70.2°F) and highs from 30.8°C (87.4°F) to 29.3°C (84.7°F). Sunshine hours are fewer as compared to the spring months with 5.6 hours at the start, increasing to 6 hours by February.Autumn weather in Bostok
Autumn in Bostok spans from March to May. This season features a sharp increase in rainfall with averages rising from 82mm (3.23") up to its annual peak of 192mm (7.56"). Despite the increasing rains, temperatures remain fairly consistent with highs between 29.8°C (85.6°F) to 30.1°C (86.2°F) and lows between 21°C (69.8°F) to 21.9°C (71.4°F). Sunshine hours are consistent with averages from 4.6 hours in March to 5.1 hours by May.Winter weather in Bostok
Winter, from June through August, offers a slight assert from the high rainfall as the average falls from 123mm (4.84") to 76mm (2.99"). Temperatures over this period remain steady with highs from 30.3°C (86.5°F) to 32.8°C (91°F), and lows between 21.1°C (70°F) to 20.5°C (68.9°F). Bostok experiences more sunshine during these months, reaching up to 8.6 hours of sunshine per day by August.Weather in January
The start of the year in Bostok, French Guiana commences with temperate weather patterns. The transition from December to January displays little shift, dominated by comfortable temperatures and constant high humidity levels. Prevailing winds in January reach maximum speeds of 5.5km/h (3.4mph). Weather in January »Weather in February
The weather trend in February continues from the precedent set by January, fairly stable with slight shifts. The wind speeds experience an uptick, manifesting a slight surge from 5.5km/h (3.4mph) to 5.7km/h (3.5mph). Despite the negligible change, February ushers in a slightly windier month compared to January. Weather in February »Weather in March
Transitioning into March, the climatic patterns continue their predictable path from February. An increase in sunshine days generates a more outdoor-friendly atmosphere than previous months. As visible from continuous pattern, consistency plays a key role with the local climate. Weather in March »Weather in April
April marks a key change in Bostok's weather pattern as marked by an increase in rainfall from 82mm (3.23") in previous month to 129mm (5.08") in April. As spring advances, subequatorial weather takes precedence with higher rainfall and the resulting relative humidity. Weather in April »Weather in May
Bostok's climate takes a turn as May comes around. Post April's heavy rainfall, May follows through with increased rainfall, however, it has a subtle effect on the overall weather condition. May continues the warming trend, but without any significant change in daylight conditions or wind speed. Weather in May »Weather in June
With the monsoon looming, June continues the subtle changes from May. The rainy days continue with more uniform distribution throughout the month. The balance between temperatures, daylight hours and wind speeds remains, ensuring comfortable living conditions. Weather in June »Weather in July
July marks a return to clarity with a significant drop in rainfall from 123mm (4.84") to 97mm (3.82"). This reduction in rainfall sets July apart from the previous months. The weather in the past week of July signifies the start of a new trend. Weather in July »Weather in August
August continues the trend started in July, with a drop in rainfall, making it the driest month compared to the last six months, but also ushers in increasing daylight hours, in Bostok, French Guiana. The change in weather dynamics promotes a pleasant atmosphere and encourages outdoor activities. Weather in August »Weather in September
As Bostok progresses into September, the weather pattern shifts further. This transition to drier weather is sustained as September builds upon the trends of the previous month. As we approach the end of the monsoon season, the weather stabilizes, maintaining the consistency we have come to expect from Bostok's climate. The transition from August to September sees an average high-temperature of a still tropical 34.1°C (93.4°F), indicating a minor variance from the prior month. Weather in September »Weather in October
Marking its place with a subtle transition from September, October is hallmarked by stable weather parameters. October carries forward the gentle transition that began in August, with increasing visibility in Bostok, French Guiana. Weather in October »Weather in November
November in Bostok witnesses a slight increase in rainfall from October's 21mm (0.83") to 43mm (1.69"). Despite the shift, the city maintains a stable weather pattern. The consistency extends beyond temperatures, with daylight hours and wind speed remaining relatively stable. Weather in November »Weather in December
The cool December breeze signals an end to the year in Bostok. Echoing from November, December maintains an average rainfall of 112mm (4.41"), a subtle climb compared to the previous month. However, the month offers an improve on earlier weather trends, tying in nicely with the constant year-round climate conditions. 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 Bostok, French Guiana, during the entire year, the rain falls for 265.5 days and collects up to 1078mm (42.44") of precipitation.
January, March and December, with an average maximum UV index of 5, are months with the lowest UV index.
February is the coldest month in Bostok, French Guiana, exhibiting average temperatures of 29.3°C (84.7°F) at the peak and 21.2°C (70.2°F) at the base.
With an average of 4h of sunshine, February has the least sunshine of the year.
The most humid month is May, with an average relative humidity of 90%.
May is the month with the most rainfall in Bostok, French Guiana. Rain falls for 25.9 days and accumulates 192mm (7.56") of precipitation.
June has the longest days of the year, with an average of 12h and 18min of daylight.
The months with the highest UV index in Bostok are August through November, with an average maximum UV index of 7.
September and October, with an average of 8.8h of sunshine, are months with the most sunshine in Bostok, French Guiana.
Bostok's October weather, with an average high temperature of 34.9°C (94.8°F) and an average low temperature of 20.8°C (69.4°F), tends to be the warmest of the year.
October is the least humid month, with an average relative humidity of 72%.
October is the month with the least rainfall. Rain falls for 10.4 days and accumulates 21mm (0.83") of precipitation.
With an average of 11h and 54min of daylight, December has the shortest days of the year in Bostok.
Bostok does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature
Bostok, French Guiana
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).
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
Bostok, French Guiana
- Average pressure in January:
1011.8mbar - Average pressure in February:
1011.6mbar - Average pressure in March:
1011.7mbar - Average pressure in April:
1011.8mbar - Average pressure in May:
1012.2mbar - Average pressure in June:
1013mbar
- Average pressure in July:
1013mbar - Average pressure in August:
1012.4mbar - Average pressure in September:
1011.6mbar - Average pressure in October:
1010.2mbar - Average pressure in November:
1009.4mbar - Average pressure in December:
1010.7mbar
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
Bostok, French Guiana
- Average wind speed in January:
5.1km/h - Average wind speed in February:
5.3km/h - Average wind speed in March:
5.3km/h - Average wind speed in April:
4.8km/h - Average wind speed in May:
4.5km/h - Average wind speed in June:
4.3km/h
- Average wind speed in July:
4.2km/h - Average wind speed in August:
4.5km/h - Average wind speed in September:
4.9km/h - Average wind speed in October:
5.2km/h - Average wind speed in November:
5.3km/h - Average wind speed in December:
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
Bostok, French Guiana
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Bostok, French Guiana
- Average rainfall in January:
86mm - Average rainfall in February:
81mm - Average rainfall in March:
82mm - Average rainfall in April:
129mm - Average rainfall in May:
192mm - Average rainfall in June:
123mm
The wettest month (with the highest rainfall) is May (192mm).
The driest month (with the least rainfall) is October (21mm).
Average rainfall days
Bostok, French Guiana
- Average rainfall days in January:
26.8 days - Average rainfall days in February:
25.8 days - Average rainfall days in March:
26.8 days - Average rainfall days in April:
26.3 days - Average rainfall days in May:
25.9 days - Average rainfall days in June:
24.5 days
- Average rainfall days in July:
24.6 days - Average rainfall days in August:
18.8 days - Average rainfall days in September:
14.3 days - Average rainfall days in October:
10.4 days - Average rainfall days in November:
15.1 days - Average rainfall days in December:
26.2 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 / Average sunshine
Bostok, 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 18min - Average daylight in June:
12h and 18min
- Average daylight in July:
12h and 18min - Average daylight in August:
12h and 12min - Average daylight in September:
12h and 6min - Average daylight in October:
12h and 0min - Average daylight in November:
12h and 0min - Average daylight in December:
11h and 54min
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 54min - Average sunshine in February:
4h and 0min - Average sunshine in March:
4h and 42min - Average sunshine in April:
4h and 36min - Average sunshine in May:
5h and 6min - Average sunshine in June:
6h and 36min
- Average sunshine in July:
7h and 30min - Average sunshine in August:
8h and 36min - Average sunshine in September:
8h and 48min - Average sunshine in October:
8h and 48min - Average sunshine in November:
8h and 12min - Average sunshine in December:
5h and 36min
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
Bostok, French Guiana
- Average sunshine days in January:
2.3 days - Average sunshine days in February:
1.8 days - Average sunshine days in March:
2.7 days - Average sunshine days in April:
2.5 days - Average sunshine days in May:
3.4 days - Average sunshine days in June:
3.3 days
- Average sunshine days in July:
4.3 days - Average sunshine days in August:
9.5 days - Average sunshine days in September:
13.3 days - Average sunshine days in October:
17.3 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
3.7 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
Bostok, French Guiana
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
Bostok, French Guiana
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
Bostok, French Guiana
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).
