Weather forecast for 10 days
Grand-Santi, French Guiana

Weather forecast for the weekend

Saturday, 14. Jun

Thunderstorms
06:25

18:50
-03
Thunderstorms
30°C / 23°C
  • Wind: 10km/h ENE
  • Humidity: 84%
  • Precip. probability: 84%
  • Precipitation: 10mm
  • UV index: 10
On Saturday, in Grand-Santi, unstable atmospheric conditions may lead to thunderstorms.
The likelihood of rainfall is high. However, precipitation will be light. The highest temperature will be a blazing 30°C, while the lowest temperature will be a temperate 23°C.
On Saturday, the forecasted temperature will match June's typical high of 30.4°C.
Sunrise will be at 06:25 and sunset at 18:50; the daylight will last for 12h and 24min.

Sunday, 15. Jun

Thunderstorms
06:25

18:50
-03
Thunderstorms
31°C / 22°C
  • Wind: 10km/h E
  • Humidity: 82%
  • Precip. probability: 80%
  • Precipitation: 7mm
  • UV index: 11
On Sunday, 15th of June, unstable skies bring the chance of thunderstorms.
The chance of precipitation is high. However, the rainfall will be light. The temperature will fluctuate from a high of a tropical 31°C to a low of a delightful 22°C.
Expect the maximum temperature to remain consistent with the typical June high of 30.4°C.
Sunrise will be at 06:25 and sunset at 18:50; the daylight will last for 12h and 24min.

Frequently asked questions

What is the weather forecast for Grand-Santi for Saturday?
On Saturday, scattered thunderstorms are expected to form.
Will it rain on Saturday in Grand-Santi?
With a probability of 84%, light precipitation of 10mm is anticipated on Saturday.
What will be the highest temperature on Saturday?
On Saturday, the maximum temperature will be 30°C, while the minimum temperature will be 23°C.
What is the weather forecast for Grand-Santi for Sunday?
On Sunday, expect thunderstorm activity to continue.
Will it rain on Sunday?
Light precipitation of 7mm is anticipated on Sunday in Grand-Santi. The chance of rainfall is high at 80%.
What will be the maximum temperature on Sunday?
On Sunday, the maximum temperature will be 31°C, while the minimum temperature will be 22°C.
What is the weather forecast for Grand-Santi for the next ten days?
In Grand-Santi, thunderstorms are expected daily for the next ten days.
Will it rain in the next ten days?
With daily precipitation varying from a maximum of 10mm to a minimum of 3mm, rainfall is predicted every day in Grand-Santi. Saturday, with light precipitation of 10mm, will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will range between 30°C and 33°C, while the minimum temperature will be between 22°C and 23°C.
Taking the humidity into consideration, the maximum feel-like temperature will range between 38°C and 47°C.
What will be the hottest and the coldest days?
With a maximum temperature of 33°C, Monday through next Wednesday will be the hottest days. With a maximum temperature of 30°C, Wednesday and Saturday will be the coldest days.

Long-term weather forecast

Tue10.Jun
  • 32°C
  • 23°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 10km/h E
  • Humidity: 81%
  • UV index: 11
  • Precip. probability: 52%
  • Precipitation: 5mm
  • 06:25 18:49 -03
Wed11.Jun
  • 30°C
  • 23°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 10km/h ENE
  • Humidity: 82%
  • UV index: 8
  • Precip. probability: 75%
  • Precipitation: 8mm
  • 06:25 18:49 -03
Thu12.Jun
  • 32°C
  • 23°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 9km/h ENE
  • Humidity: 79%
  • UV index: 11
  • Precip. probability: 64%
  • Precipitation: 3mm
  • 06:25 18:49 -03
Fri13.Jun
  • 32°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 12km/h ENE
  • Humidity: 80%
  • UV index: 11
  • Precip. probability: 68%
  • Precipitation: 8mm
  • 06:25 18:49 -03
Sat14.Jun
  • 30°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h ENE
  • Humidity: 84%
  • UV index: 10
  • Precip. probability: 84%
  • Precipitation: 10mm
  • 06:25 18:50 -03
Sun15.Jun
  • 31°C
  • 22°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h E
  • Humidity: 82%
  • UV index: 11
  • Precip. probability: 80%
  • Precipitation: 7mm
  • 06:25 18:50 -03
Mon16.Jun
  • 33°C
  • 23°C
PM Thunderstorms
PM Thunderstorms
  • Wind: 10km/h E
  • Humidity: 76%
  • UV index: 11
  • Precip. probability: 67%
  • Precipitation: 5mm
  • 06:26 18:50 -03
Tue17.Jun
  • 33°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h ESE
  • Humidity: 77%
  • UV index: 11
  • Precip. probability: 62%
  • Precipitation: 7mm
  • 06:26 18:50 -03
Wed18.Jun
  • 33°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 9km/h E
  • Humidity: 77%
  • UV index: 11
  • Precip. probability: 60%
  • Precipitation: 7mm
  • 06:26 18:50 -03
Thu19.Jun
  • 32°C
  • 23°C
Thunderstorms
Thunderstorms
  • Wind: 10km/h E
  • Humidity: 76%
  • UV index: 11
  • Precip. probability: 60%
  • Precipitation: 6mm
  • 06:26 18:51 -03
Forecasts for the ten-day outlook show that thunderstorm activity is expected throughout the forecast.
Rainfall is predicted day-to-day, with daily precipitation varying from a minimal 3mm to a maximum of 10mm.
The high temperatures are expected to remain largely stable in the upcoming period. Maximum temperatures will fall between 30°C and 33°C, while the nighttime low will be also mostly stable, as night temperatures will lie between 22°C and 23°C.
The hottest days in Grand-Santi will be Monday through next Wednesday, with a maximum of 33°C; with a maximum temperature of 30°C, Wednesday and Saturday will be the coldest days in Grand-Santi.
Including the humidity's impact, the maximum feel-like temperature may increase significantly and vary between a torrid 38°C and a searing 47°C.
Updated: Jun 10, 2025 @ 08:29:34 UTC
Published by: Weather Atlas | About Us
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