Matoury Weather in December

December in Matoury averages 30°C (86°F) during the day and 24°C (75°F) at night. December is part of the rainy season, with around 272 mm (11 in) of rainfall and frequent showers.

Rainfall in Matoury in December

As part of the rainy season, Matoury sees around 18 days of rain in December, with an average of 272 mm (11 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in Matoury in December

Temperatures in Matoury in December top out at 30°C (86°F) and drop to 24°C (75°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Matoury in December

You can expect a moderate amount of sunlight, with approximately 152 hours. Even though this month is part of the wet season, you can still see the sun occasionally.

Wind Speed in Matoury in December

Wind speeds average 3 m/s (6 knots) during December. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in December

The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.

December in Matoury can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

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• February
• March
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For a detailed overview over the year and the best time to visit French Guiana, check out our Matoury's climate page.

Matoury Temperature in December

Min Temperature 24°C (75°F)  

Max Temperature 30°C (86°F)  

Water Temperature 28°C (82°F) *  

Chance of Rain 60%  

Precipitation 272 mm (11 in)  

Rainy days 18 days  

Humidity 80% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 152 hours *  

Percentage Sunshine *  

* Data from: Cayenne, French Guiana (4 KM, 2 Miles).

Daily Historical Temperatures

46-year average (1976-2025)

Based on our historical records, temperatures in Matoury typically stay consistent throughout December, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).

Average temperatures in December

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Daily Historical Precipitation

46-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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‹ January February March April May June July August September October November December ›

Historical weather for Matoury in December

Browse day-by-day weather records for Matoury spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Matoury historical weather extremes in December

Based on 23 years of weather observations in Matoury between 2002 and 2025, these are the recorded extremes.

• The warmest day in December was on December 3, 2004, with a maximum of 34°C (93°F).
• On December 22, 2009, Matoury saw its coldest December day with temperatures maxing out at 25°C (77°F).
• The coldest night in December in Matoury was on December 30, 2018, with a minimum of 21°C (70°F).
• The heaviest December precipitation occurred on December 12, 2014, when 133 mm (5.2 in) of precipitation fell.

What to Wear in Matoury in December

Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Matoury in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit French Guiana, check out our Matoury's climate page.

More climate data for Matoury

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Matoury climate overview or explore weather in French Guiana.