Weather forecast for 10 days
Siminiout, French Guiana

Weather forecast for the weekend

Saturday, 17. May

Thunderstorms
06:18

18:36
-03
Thunderstorms
28°C / 22°C
  • Wind: 12km/h E
  • Humidity: 89%
  • Precip. probability: 70%
  • Precipitation: 19mm
  • UV index: 6
On Saturday, 17th of May, storm clouds could lead to bursts of thunder and rain.
The likelihood of rainfall is high, and precipitation will be moderate. The maximum temperature will be a temperate 28°C, while the minimum forecasted temperature is an agreeable 22°C.
The forecasted maximum temperature will closely reflect May's average high of 28.8°C.
Sunrise will be at 06:18 and sunset at 18:36; the daylight will last for 12h and 17min.

Sunday, 18. May

Thunderstorms
06:18

18:36
-03
Thunderstorms
28°C / 22°C
  • Wind: 10km/h E
  • Humidity: 89%
  • Precip. probability: 77%
  • Precipitation: 19mm
  • UV index: 6
On Sunday, 18th of May, wet and stormy weather is expected.
The likelihood of rainfall is high, and precipitation will be moderate. The temperature scale will run from a maximum of a temperate 28°C to a minimum of an agreeable 22°C.
The expected maximum is forecasted to be in line with the regular May temperature of 28.8°C.
Sunrise will be at 06:18 and sunset at 18:36; the daylight will last for 12h and 18min.

Frequently asked questions

What is the weather forecast for Siminiout for Saturday?
On Saturday, changing skies could spark thunderstorms.
Will it rain on Saturday?
Moderate precipitation of 19mm is predicted on Saturday. The likelihood of rainfall is 70%.
What will be the maximum temperature on Saturday?
On Saturday, the maximum temperature will be 28°C, while the minimum temperature will be 22°C.
What is the weather forecast for Siminiout for Sunday?
On Sunday, thunderstorm risks remain elevated.
Will it rain on Sunday?
Moderate precipitation of 19mm is forecasted on Sunday. The likelihood of rainfall is 77%.
What will be the maximum temperature in Siminiout on Sunday?
On Sunday, the maximum temperature will be 28°C, while the minimum temperature will be 22°C.
What is the weather forecast for Siminiout for the next ten days?
In Siminiout, thunderstorms are expected daily for the next ten days.
Will it rain in the next ten days?
With daily precipitation varying from a minimum of 10mm to a maximum of 19mm, rainfall is anticipated every day in Siminiout. The days with the most rainfall will be Saturday and Sunday, with moderate precipitation of 19mm.
How hot will it be in the next ten days?
The maximum temperature will vary between 28°C and 30°C, while the minimum temperature will vary between 22°C and 23°C.
Combining with the humidity, the maximum feel-like temperature will range between 33°C and 39°C.
What will be the hottest and the coldest days?
With a maximum temperature of 30°C, Thursday, next Tuesday and Thursday will be the hottest days. With a maximum temperature of 28°C, Tuesday, Saturday through Monday will be the coldest days.

Long-term weather forecast

Tue13.May
  • 28°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 11km/h ENE
  • Humidity: 87%
  • UV index: 8
  • Precip. probability: 80%
  • Precipitation: 11mm
  • 06:19 18:36 -03
Wed14.May
  • 29°C
  • 22°C
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 11km/h ENE
  • Humidity: 85%
  • UV index: 11
  • Precip. probability: 59%
  • Precipitation: 13mm
  • 06:19 18:36 -03
Thu15.May
  • 30°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 12km/h E
  • Humidity: 85%
  • UV index: 10
  • Precip. probability: 68%
  • Precipitation: 11mm
  • 06:19 18:36 -03
Fri16.May
  • 29°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h ESE
  • Humidity: 86%
  • UV index: 8
  • Precip. probability: 76%
  • Precipitation: 17mm
  • 06:18 18:36 -03
Sat17.May
  • 28°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 12km/h E
  • Humidity: 89%
  • UV index: 6
  • Precip. probability: 70%
  • Precipitation: 19mm
  • 06:18 18:36 -03
Sun18.May
  • 28°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h E
  • Humidity: 89%
  • UV index: 6
  • Precip. probability: 77%
  • Precipitation: 19mm
  • 06:18 18:36 -03
Mon19.May
  • 28°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h E
  • Humidity: 88%
  • UV index: 6
  • Precip. probability: 74%
  • Precipitation: 16mm
  • 06:18 18:36 -03
Tue20.May
  • 30°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h ENE
  • Humidity: 84%
  • UV index: 6
  • Precip. probability: 65%
  • Precipitation: 12mm
  • 06:18 18:36 -03
Wed21.May
  • 29°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 11km/h E
  • Humidity: 86%
  • UV index: 8
  • Precip. probability: 60%
  • Precipitation: 12mm
  • 06:18 18:36 -03
Thu22.May
  • 30°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 11km/h ENE
  • Humidity: 84%
  • UV index: 6
  • Precip. probability: 60%
  • Precipitation: 10mm
  • 06:18 18:37 -03
Forecasts indicate that frequent thunderstorms are expected across all days.
Rainfall is predicted day-to-day, with daily precipitation varying from a minimal 10mm to a maximum of 19mm. With moderate precipitation of 19mm, Saturday and Sunday will be the wettest days.
Fluctuations in temperature will be barely perceptible in the upcoming days. Expected highs will hover between 28°C and 30°C, while the lowest nightly temperature differences will be also negligible, as night temperatures will lie between 22°C and 23°C.
Thursday, next Tuesday and Thursday, with the highest temperature of 30°C, will be the hottest days; with a maximum temperature of 28°C, Tuesday, Saturday through Monday will be the coldest days.
Taking the humidity into consideration, the maximum feel-like temperature may increase greatly and vary between a tropical 33°C and a torrid 39°C.
Updated: May 13, 2025 @ 14:25:46 UTC
Published by: Weather Atlas | About Us
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