🇬🇫 Weather in Cayenne
Map Overlays:
Hourly Forecast for Cayenne
04:00
23°
25%
05:00
23°
28%
06:00
23°
30%
07:00
24°
33%
08:00
25°
37%
09:00
26°
45%
10:00
28°
41%
11:00
28°
30%
12:00
30°
12%
13:00
30°
19%
14:00
30°
13%
15:00
30°
3%
16:00
29°
4%
17:00
28°
7%
18:00
27°
10%
19:00
26°
24%
20:00
25°
14%
21:00
25°
15%
22:00
24°
16%
23:00
24°
18%
00:00
24°
36%
01:00
23°
67%
02:00
23°
48%
03:00
23°
71%
14-Day Forecast for Cayenne
2026-07-11
Patchy rain nearby
30° /
23°
2026-07-12
Patchy rain nearby
30° /
23°
2026-07-13
Sunny
30° /
24°
2026-07-14
Patchy rain nearby
30° /
24°
2026-07-15
Patchy rain nearby
31° /
24°
2026-07-16
Sunny
30° /
24°
2026-07-17
Patchy rain nearby
29° /
23°
Additional Forecasts for Cayenne
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 105.0 μg/m³
O₃ (Ozone) 37.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.7 μg/m³
SO₂ (Sulphur Dioxide) 0.1 μg/m³
PM2.5 (Fine particles) 4.0 μg/m³
PM10 (Coarse particles) 6.3 μg/m³
Historical Weather
Weather Forecasts for Other Cities in French Guiana
Weather in Cayenne — FAQ
Answers refreshed each request based on current conditions in Cayenne.
What is the weather like right now in Cayenne?
Right now in Cayenne, French Guiana the temperature is 24.3°C (feels like 26.9°C), with mist. Relative humidity is 100% and wind is 7.2 km/h.
What is today's high and low temperature in Cayenne?
Today's forecast high in Cayenne is 30.1°C and the overnight low is 23.3°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Cayenne today?
The chance of precipitation in Cayenne today is 62%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Cayenne differ from nearby cities?
Even short distances can change temperatures noticeably. Cayenne's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.