Cayenne UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index11.4
- Avg Clouds47%
- Max Temp29.1 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Cayenne, French Guiana 
will reach a high of 11.4 today. This means a extreme level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-02
Hourly Forecast Chart
Today's Safety Tips
Extreme danger! Avoid being in the sun, especially during midday. If you go out, cover up with clothing, a hat, and sunglasses, and use plenty of sunscreen.
Cayenne's UV Index
Cayenne has a UV index that ranges from moderate to very high, typically peaking around 11 during the equinox months. This means the sun's rays can be very strong for much of the year.
Weather Seasons
The city experiences an equatorial climate with a wet season from December to July and a drier season from August to November. Temperatures stay warm all year, usually between 24°C and 31°C.
Cayenne's Climate
Compared to neighboring Suriname and Brazil, Cayenne has similar tropical weather but often more rainfall due to its coastal location. The nearby countries also have wet and dry seasons, but the rainfall and humidity levels can vary slightly.
Hourly UV Index Trend
See the UV index hour by hour for Cayenne. When the level is high, it's smart to find some shade.
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