Climate and monthly weather forecastSimon, French Guiana
Climate and monthly weather forecast
Weather in January
January, the same as December, is a moderately hot winter month in Simon, French Guiana, with an average temperature fluctuating between 28°C (82.4°F) and 24°C (75.2°F). Shifting into January, Simon records an average high-temperature of a still moderately hot 28°C (82.4°F), presenting minor fluctuations compared to the previous month. Weather in January »Weather in February
February, the last month of the winter in Simon, is another warm month, with an average temperature ranging between max 27.7°C (81.9°F) and min 23.9°C (75°F). February, with average temperatures reaching a high of 27.7°C (81.9°F) and a low of 23.9°C (75°F), is the coldest month. February's mean heat index is computed to be a tropical 32°C (89.6°F). Weather in February »Weather in March
The first month of the spring, March, is still a warm month in Simon, French Guiana, with temperature in the range of an average high of 28.3°C (82.9°F) and an average low of 24.2°C (75.6°F). Transitioning into March, Simon records an average high-temperature of a still moderately hot 28.3°C (82.9°F), almost identical to February's 27.7°C (81.9°F). Weather in March »Weather in April
April, like March, in Simon, French Guiana, is another warm spring month, with an average temperature fluctuating between 28.5°C (83.3°F) and 24.7°C (76.5°F). As Simon steps into April, the average high-temperature holds at a still warm 28.5°C (83.3°F), hinting at a minor fluctuation from the prior month. Weather in April »Weather in May
The last month of the spring, May, is another warm month in Simon, French Guiana, with temperature in the range of an average high of 28.6°C (83.5°F) and an average low of 24.7°C (76.5°F). Simon measures an average high-temperature of a still moderately hot 28.6°C (83.5°F) in May, nearly consistent with the preceding month. Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Simon, French Guiana, with an average temperature fluctuating between 28.8°C (83.8°F) and 23.8°C (74.8°F). The commencement of June records an average high-temperature of a still warm 28.8°C (83.8°F), barely varying from May's 28.6°C (83.5°F). Weather in June »Weather in July
July, like June, in Simon, French Guiana, is another warm summer month, with an average temperature varying between 29.8°C (85.6°F) and 23.8°C (74.8°F). The beginning of July records an average high-temperature of a still warm 29.8°C (85.6°F), marking a negligible difference from June's 28.8°C (83.8°F). Weather in July »Weather in August
August, the last month of the summer in Simon, is a hot month, with temperature in the range of an average high of 30.9°C (87.6°F) and an average low of 23.9°C (75°F). Upon the onset of August, Simon witnesses an average high-temperature of a tropical 30.9°C (87.6°F), showing a close resemblance to the prior month. Weather in August »Weather in September
September, the first month of the autumn in Simon, is still a tropical month, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 24.5°C (76.1°F). In September, Simon experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 30.9°C (87.6°F) in August to a still tropical 31.5°C (88.7°F). Weather in September »Weather in October
October, the same as September, in Simon, French Guiana, is a hot autumn month, with temperature in the range of an average low of 24.8°C (76.6°F) and an average high of 31.6°C (88.9°F). October is the month when Simon experiences its warmest temperatures, averaging a high of 31.6°C (88.9°F) and a low of 24.8°C (76.6°F). October's average heat index is computed to be a scorching 41°C (105.8°F). Weather in October »Weather in November
The last month of the autumn, November, is another hot month in Simon, French Guiana, with an average temperature fluctuating between 30.8°C (87.4°F) and 24.8°C (76.6°F). The average high-temperature in November, at a still hot 30.8°C (87.4°F), reveals a modest deviation from October's 31.6°C (88.9°F). Weather in November »Weather in December
December, the first month of the winter in Simon, is also a moderately hot month, with temperature in the range of an average high of 28.8°C (83.8°F) and an average low of 24.5°C (76.1°F). As December takes hold, the average high-temperature is a warm 28.8°C (83.8°F), nearly mirroring that of the previous month. 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, in Simon, French Guiana, there are 277 rainfall days, and 1707mm (67.2") of precipitation is accumulated.
The months with the lowest UV index in Simon are January through May and December, with an average maximum UV index of 6.
February is the coldest month, exhibiting average temperatures of 27.7°C (81.9°F) at the peak and 23.9°C (75°F) at the base.
February has the least sunshine of the year, with an average of 5.6h of sunshine.
May is the most humid month in Simon, French Guiana, with an average relative humidity of 86%.
May is the month with the most rainfall. Rain falls for 28.9 days and accumulates 293mm (11.54") of precipitation.
June has the longest days of the year in Simon, French Guiana, with an average of 12h and 24min of daylight.
June through November, with an average maximum UV index of 7, are months with the highest UV index in Simon, French Guiana.
The months with the lowest humidity in Simon, French Guiana, are September and October, with an average relative humidity of 76%.
September is the month with the least rainfall. Rain falls for 12.2 days and accumulates 23mm (0.91") of precipitation.
September has the most sunshine of the year in Simon, French Guiana, with an average of 9.2h of sunshine.
October tends to be the warmest month, with temperatures averaging a daily high of 31.6°C (88.9°F) and a low of 24.8°C (76.6°F).
With an average of 11h and 54min of daylight, December has the shortest days of the year in Simon, French Guiana.
Simon, French Guiana, does not observe Daylight Saving Time (DST). -03 timezone is used throughout the entire year.
Average temperature
Simon, French Guiana
The warmest month (with the highest average high temperature) is October (31.6°C).
The month with the lowest average high temperature is February (27.7°C).
The months with the highest average low temperature are October and November (24.8°C).
The coldest months (with the lowest average low temperature) are June and July (23.8°C).
Average pressure
Simon, French Guiana
- Average pressure in January:
1011.9mbar - Average pressure in February:
1011.7mbar - Average pressure in March:
1011.9mbar - Average pressure in April:
1011.9mbar - Average pressure in May:
1012.3mbar - Average pressure in June:
1013.1mbar
- Average pressure in July:
1013.2mbar - Average pressure in August:
1012.7mbar - Average pressure in September:
1012mbar - 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
Simon, French Guiana
- Average wind speed in January:
12.2km/h - Average wind speed in February:
12.9km/h - Average wind speed in March:
12.7km/h - Average wind speed in April:
11.7km/h - Average wind speed in May:
10.5km/h - Average wind speed in June:
8.5km/h
- Average wind speed in July:
8.3km/h - Average wind speed in August:
10km/h - Average wind speed in September:
11.1km/h - Average wind speed in October:
11.1km/h - Average wind speed in November:
11.1km/h - Average wind speed in December:
11.7km/h
The windiest month (with the highest average wind speed) is February (12.9km/h).
The calmest month (with the lowest average wind speed) is July (8.3km/h).
Average humidity
Simon, French Guiana
The month with the highest relative humidity is May (86%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall
Simon, French Guiana
- Average rainfall in January:
154mm - Average rainfall in February:
163mm - Average rainfall in March:
128mm - Average rainfall in April:
208mm - Average rainfall in May:
293mm - Average rainfall in June:
234mm
The wettest month (with the highest rainfall) is May (293mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days
Simon, French Guiana
- Average rainfall days in January:
28 days - Average rainfall days in February:
26.3 days - Average rainfall days in March:
27.2 days - Average rainfall days in April:
27.2 days - Average rainfall days in May:
28.9 days - Average rainfall days in June:
28.2 days
- Average rainfall days in July:
26.6 days - Average rainfall days in August:
19.2 days - Average rainfall days in September:
12.2 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
16.4 days - Average rainfall days in December:
25.2 days
The month with the highest number of rainy days is May (28.9 days).
The month with the least rainy days is October (11.6 days).
Average daylight / Average sunshine
Simon, 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 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 54min
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 54min).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
5h and 36min - Average sunshine in March:
6h and 0min - Average sunshine in April:
6h and 12min - Average sunshine in May:
6h and 54min - Average sunshine in June:
7h and 30min
- Average sunshine in July:
8h and 18min - Average sunshine in August:
8h and 48min - Average sunshine in September:
9h and 12min - Average sunshine in October:
9h and 6min - Average sunshine in November:
8h and 42min - Average sunshine in December:
7h and 18min
The month with the most sunshine is September (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days
Simon, French Guiana
- Average sunshine days in January:
1.8 days - Average sunshine days in February:
1.3 days - Average sunshine days in March:
2.3 days - Average sunshine days in April:
1.5 days - Average sunshine days in May:
1.1 days - Average sunshine days in June:
0.9 days
- Average sunshine days in July:
2.3 days - Average sunshine days in August:
6.8 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
11.2 days - Average sunshine days in December:
4.1 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is June (0.9 days).
Average UV index
Simon, French Guiana
The months with the highest UV index are June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, March, April, May and December (UV index 6).
Average cloud cover
Simon, French Guiana
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 25).
Average visibility
Simon, French Guiana
The months with the highest visibility are January, February, March, August, September, October and November (10km).
The months with the lowest visibility are April, May, June, July and December (9km).
