Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
March verdict
Cayenne, French Guiana in March
Weather score47Mixed
Mixed for holiday weather
Average highs sit around 29°C, giving warm days by monthly-average standards. Sunshine averages 4.4h per day, so this is not one of the brighter months. Rainfall averages 374mm, so showers are a real planning factor.
March weather
Monthly averages
Temp
29°C
Rain
374mm
Sun
4.4h
Sea
27°C
Weather score
47
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 374mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.4h per day, so this is not one of the brighter months.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Cayenne, French Guiana with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
March29°C average high
March is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsJuly to November
This stretch sets the upper range for average daytime heat.
Rain
March374mm average rain
March is wetter than Cayenne's yearly average, so flexible plans matter more.
Driest monthsJuly to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
March4.4 hours average sun
March is one of Cayenne'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
March27°C average sea
March is part of a consistently warm sea-temperature pattern, so swimming comfort changes little through the year.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
March47 weather score
March 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.