French Guiana weather
Our guide to the weather in French Guiana during December
We've looked at the most up-to-date weather data for French Guiana, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about French Guiana weather in December.
How warm is it in French Guiana during December?
The temperature is extremely stable in December with average highs of 29℃ and lows just 4℃ lower at 24℃. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in French Guiana during December?
On average, there will be 15 rainy days during the month, amounting to 424.2mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, December will see just 6 days that produce a storm.
Is it windy in French Guiana during December?
You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in December. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.
Weather in French Guiana
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