Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
January verdict
French Guiana in January
Weather score47Mixed
Mixed for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 4.2h per day, so this is not one of the brighter months. Rainfall averages 297mm, so showers are a real planning factor.
January weather
Monthly averages
Temp
29°C
Rain
297mm
Sun
4.2h
Sea
18°C
Weather score
47
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 297mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.2h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Weather map
Compare French Guiana with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January29°C average high
January is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsAugust to November
This stretch sets the upper range for average daytime heat.
Rain
January297mm average rain
January sits near French Guiana's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsAugust to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
January4.2 hours average sun
January is one of French Guiana's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsAugust to November
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January18°C average sea
January is close to French Guiana's usual sea temperature, with limited seasonal change in the water.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
January47 weather score
January is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsAugust to October
These months have the strongest weather score in the monthly averages.