Warm
Average highs sit around 29°C, giving warm days by monthly-average standards.
May verdict
Cayenne, French Guiana in May
Weather score48Mixed
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 544mm, so showers are a real planning factor.
May weather
Monthly averages
Temp
29°C
Rain
544mm
Sun
4.4h
Sea
28°C
Weather score
48
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 544mm, 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 28°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
May29°C average high
May is on the cooler side of Cayenne's year, useful if you prefer less intense daytime heat.
Warmest monthsJuly to November
This stretch sets the upper range for average daytime heat.
Rain
May544mm average rain
May is one of Cayenne's wettest months, so rain is likely to be a major planning factor.
Driest monthsJuly to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May4.4 hours average sun
May 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
May28°C average sea
May 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
May48 weather score
May 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.