Climate and monthly weather forecastCertitude, French Guiana
Climate and monthly weather forecast
Weather in January
January, like December, in Certitude, French Guiana, is another warm winter month, with an average temperature ranging between max 29.7°C (85.5°F) and min 20.8°C (69.4°F). The arrival of January brings an average high-temperature of a moderately hot 29.7°C (85.5°F), nearly identical to December's 30.8°C (87.4°F). Weather in January »Weather in February
The last month of the winter, February, is also a moderately hot month in Certitude, French Guiana, with an average temperature fluctuating between 29.3°C (84.7°F) and 21.2°C (70.2°F). February is the coldest month, with an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 21.2°C (70.2°F). The heat index value for February is estimated at a very hot 38°C (100.4°F). Weather in February »Weather in March
March, the first month of the spring in Certitude, is a tropical month, with an average temperature varying between 30.1°C (86.2°F) and 21°C (69.8°F). The shift from February to March is characterized by an average high-temperature of a hot 30.1°C (86.2°F), not significantly different from the 29.3°C (84.7°F) of February. Weather in March »Weather in April
April, the same as March, is another warm spring month in Certitude, French Guiana, with an average temperature ranging between min 21.5°C (70.7°F) and max 29.8°C (85.6°F). With the onset of April, Certitude's average high-temperature clocks in at a moderately hot 29.8°C (85.6°F), showing a minor fluctuation from the previous month. Weather in April »Weather in May
May, the last month of the spring in Certitude, is also a moderately hot month, with temperature in the range of an average low of 21.9°C (71.4°F) and an average high of 29.8°C (85.6°F). May's arrival is characterized by an average high-temperature of a still warm 29.8°C (85.6°F), identical to that of April. Weather in May »Weather in June
The first month of the summer, June, is a tropical month in Certitude, French Guiana, with an average temperature varying between 21.1°C (70°F) and 30.3°C (86.5°F). Certitude sees the arrival of June with an average high-temperature of a tropical 30.3°C (86.5°F), indicating a subtle variation from May. Weather in June »Weather in July
July, the same as June, in Certitude, French Guiana, is a hot summer month, with an average temperature varying between 31.1°C (88°F) and 20.8°C (69.4°F). Stepping into July, Certitude records an average high-temperature of a still tropical 31.1°C (88°F), almost consistent with June. Weather in July »Weather in August
August, the last month of the summer in Certitude, is another tropical month, with temperature in the range of an average high of 32.8°C (91°F) and an average low of 20.5°C (68.9°F). The onset of August manifests an average high-temperature of a still tropical 32.8°C (91°F), demonstrating a minor variation from the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a hot month in Certitude, French Guiana, with an average temperature ranging between min 20.5°C (68.9°F) and max 34.1°C (93.4°F). Certitude's weather in September indicates an average high-temperature of a still hot 34.1°C (93.4°F), nearly consistent with the 32.8°C (91°F) of August. Weather in September »Weather in October
October, the same as September, in Certitude, French Guiana, is a hot autumn month, with an average temperature fluctuating between 20.8°C (69.4°F) and 34.9°C (94.8°F). The month of October sees the highest average temperatures, reaching 34.9°C (94.8°F) at the peak and 20.8°C (69.4°F) at the low. The heat index in October is estimated at a blazing hot 51°C (123.8°F). Weather in October »Weather in November
November, the last month of the autumn in Certitude, is another hot month, with an average temperature varying between 34°C (93.2°F) and 21°C (69.8°F). The arrival of November sees a recorded average high-temperature of a still tropical 34°C (93.2°F), showing little divergence from the previous month's conditions. Weather in November »Weather in December
The first month of the winter, December, is also a hot month in Certitude, French Guiana, with an average temperature varying between 20.9°C (69.6°F) and 30.8°C (87.4°F). Certitude, French Guiana, observes a small decrease in the average high-temperature with the arrival of December, falling from November's hot 34°C (93.2°F) to a still tropical 30.8°C (87.4°F). 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
Throughout the year, there are 265.5 rainfall days, and 1078mm (42.44") of precipitation is accumulated.
January, March and December, with an average maximum UV index of 5, are months with the lowest UV index in Certitude.
In Certitude, February is the month with the lowest recorded average temperatures, measuring a high of 29.3°C (84.7°F) and a low of 21.2°C (70.2°F).
The month with the least sunshine in Certitude is February, with an average of 4h of sunshine.
The most humid month is May, with an average relative humidity of 90%.
May is the month with the most rainfall in Certitude. Rain falls for 25.9 days and accumulates 192mm (7.56") of precipitation.
The month with the longest days in Certitude is June, with an average of 12h and 18min of daylight.
August through November, with an average maximum UV index of 7, are months with the highest UV index in Certitude, French Guiana.
The months with the most sunshine are September and October, with an average of 8.8h of sunshine.
Certitude, French Guiana, records the warmest temperatures in October, averaging a high of 34.9°C (94.8°F) and a low of 20.8°C (69.4°F).
The least humid month is October, with an average relative humidity of 72%.
The month with the least rainfall in Certitude, French Guiana, is October, when the rain falls for 10.4 days and typically collects 21mm (0.83") of precipitation.
The month with the shortest days in Certitude is December, with an average of 11h and 54min of daylight.
Certitude, French Guiana, does not utilize Daylight Saving Time (DST). -03 timezone is used over the entire year.
Average temperature
Certitude, 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
Certitude, 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
Certitude, 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
Certitude, French Guiana
The month with the highest relative humidity is May (90%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Certitude, 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
Certitude, 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
Certitude, 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:
11h and 54min - 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
Certitude, 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
Certitude, 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
Certitude, 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
Certitude, French Guiana
The month with the highest visibility is October (8km).
The month with the lowest visibility is May (5km).
