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March Weather in Grand-Santi, French Guiana

Last updated: August 23, 2025

In Grand-Santi, French Guiana, the average temperature in March hovers around 26°C (79°F), with a comfortable minimum of 21°C (70°F) and a warm maximum reaching up to 35°C (96°F). Expect 129 mm (5.1 in) of precipitation spread over 18 days, contributing to an average humidity level of 66%. Whether you're looking for sunshine or a refreshing rain, this month offers a vibrant blend of weather in Grand-Santi!

March Temperature in Grand-Santi

In March in Grand-Santi, the average temperature is 26°C (79°F), with maximums reaching 35°C (96°F) and minimums dropping as low as 21°C (70°F). This pleasant climate makes Grand-Santi an ideal destination for travelers seeking warmth and outdoor adventure.

March Weather in Grand-Santi: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Grand-Santi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grand-Santi, March typically has an average temperature of 26°C (79°F), with highs reaching up to 35°C (96°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec777879787878788082828178
Data source: Temperature data for Grand-Santi generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Grand-Santi

In Grand-Santi in March, the total precipitation amount is 129 mm (5.1 in) spread over 18 days.

March Precipitation Trends in Grand-Santi

The chart displays monthly precipitation patterns in Grand-Santi, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Grand-Santi, March typically receives around 129 mm (5.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec1381051292904613172481157638108213
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Grand-Santi

In Grand-Santi in March, humidity is 66%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making outdoor activities invigorating yet requiring occasional breaks in the shade to stay comfortable while traveling.

March Average Humidity in Grand-Santi

This chart illustrates the average monthly humidity levels in Grand-Santi, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Grand-Santi is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%66%66%66%68%86%76%65%62%63%74%79%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Grand-Santi

In Grand-Santi in March, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Grand-Santi.

Maximum UV Index Levels in Grand-Santi for March

The chart shows the monthly maximum UV Index (UVI) for Grand-Santi in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Grand-Santi typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131516161412121313131312
Data source: Grand-Santi March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How March Weather in Grand-Santi Compares to Other Months

Weather in Grand-Santi varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Grand-Santi, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Grand-Santi, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)137 mm (5.4 inches)70%extreme
February Weather25°C (78°F)105 mm (4.1 inches)66%extreme
March Weather26°C (79°F)129 mm (5.1 inches)66%extreme
April Weather26°C (78°F)290 mm (11.4 inches)66%extreme
May Weather25°C (78°F)461 mm (18.2 inches)68%extreme
June Weather26°C (78°F)317 mm (12.5 inches)86%extreme
July Weather26°C (79°F)248 mm (9.8 inches)76%extreme
August Weather27°C (80°F)115 mm (4.5 inches)65%extreme
September Weather28°C (82°F)76 mm (3.0 inches)62%extreme
October Weather28°C (83°F)38 mm (1.5 inches)63%extreme
November Weather27°C (81°F)108 mm (4.3 inches)74%extreme
December Weather26°C (78°F)213 mm (8.4 inches)79%extreme

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