Cayenne Weather in July

July in Cayenne brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 23°C (73°F). The rainy season is in full swing this month, so frequent downpours are part of the picture.

Rainfall in Cayenne in July

Cayenne is in the rainy season in July, with rain on around 18 days and an average of 245 mm (9.6 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Cayenne in July

July in Cayenne brings very high temperatures, with highs of 31°C (88°F) and nights around 23°C (73°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With lows around 23°C (73°F), the nights are warm enough that a sheet is usually all you need for bedding.

Sunshine in Cayenne in July

The city usually sees around 202 hours of sunlight, indicating many sunny days despite it being the rainy season.

Wind Speed in Cayenne in July

Average wind conditions reach 2 m/s (4 knots) in July. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

Average water temperature in July

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.

If you prefer dry days with pleasant temperatures, July may not be the ideal month to visit Cayenne. Our weather planner can help you explore destinations with more pleasant weather conditions.

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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 Cayenne's climate page.

Cayenne Temperature in July

Min Temperature 23°C (73°F)  

Max Temperature 31°C (88°F)  

Water Temperature 28°C (82°F)  

Chance of Rain 61%  

Precipitation 245 mm (9.6 in)  

Rainy days 18 days  

Humidity 78%  

Windspeed 2 m/s (4 knots)  

Sunshine 202 hours  

Percentage Sunshine  

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Cayenne typically stay consistent throughout July, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 23°C (73°F).

Average temperatures in July

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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 July

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Historical weather for Cayenne in July

Browse day-by-day weather records for Cayenne 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 ›

Cayenne historical weather extremes in July

Based on 32 years of weather observations (1993-2025), these are the most extreme conditions recorded in Cayenne.

• Cayenne recorded its highest July temperature of 34°C (93°F) on July 28, 2024.
• Cayenne experienced its chilliest July day on July 17, 2008, reaching only 25°C (77°F).
• The coldest night in July in Cayenne was on July 5, 2000, with a minimum of 21°C (70°F).
• The heaviest July precipitation occurred on July 5, 2018, when 85 mm (3.3 in) of precipitation fell.

What to Wear in Cayenne in July

Warm but pleasant conditions in Cayenne in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Cayenne in July

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

Swimming

8/10

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 Cayenne's climate page.

More climate data for Cayenne

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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