Matoury Weather in August

August in Matoury typically sees daytime highs of 32°C (90°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Matoury in August

You can typically expect 9 days of rain this month, averaging around 123 mm (4.8 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Matoury in August

Expect highs of 32°C (90°F) in Matoury in August, with nights dropping to around 24°C (75°F). It's usually most comfortable outside during the morning and later in the day. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.

Sunshine in Matoury in August

The days are predominantly sunny, with an estimated total of around 235 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in Matoury in August

Average wind speeds reach 3 m/s (6 knots) in August, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in August

The water is 28°C (82°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

For Matoury itself, September and October generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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.

Matoury Temperature in August

Min Temperature 24°C (75°F)  

Max Temperature 32°C (90°F)  

Water Temperature 28°C (82°F) *  

Chance of Rain 31%  

Precipitation 123 mm (4.8 in)  

Rainy days 9 days  

Humidity 74% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 235 hours *  

Percentage Sunshine *  

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

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Matoury typically stay consistent throughout August, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 23°C (73°F).

Average temperatures in August

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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

Daily Historical Precipitation

49-year average (1976-2025)

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

Average precipitation in August

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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

Historical weather for Matoury in August

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

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

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

Matoury historical weather extremes in August

Based on weather observations in Matoury between 1992 and 2025, these are the recorded extremes during August.

• On August 31, 2024, temperatures climbed to 35°C (95°F), marking the warmest August day on record.
• Matoury experienced its chilliest August day on August 12, 1999, reaching only 24°C (75°F).
• Nighttime temperatures dropped to 21°C (70°F) on August 3, 1997, marking the coldest August night on record.
• The wettest day in August Matoury was on August 20, 2014 with 83 mm (3.3 in) of precipitation.

What to Wear in Matoury in August

Warm weather calls for comfortable, breathable clothing in August. 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). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Matoury in August

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

Swimming

9/10

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.