Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
December verdict
Guyana in December
Weather score54Mixed
Mixed for holiday weather
Average highs sit around 30°C, giving warm days by monthly-average standards. Sunshine averages 6.5h per day, enough for a balanced month. Rainfall averages 255mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
30°C
Rain
255mm
Sun
6.5h
Sea
9°C
Weather score
54
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 255mm, so showers are a real planning factor.
Some sun
Sunshine averages 6.5h per day, enough for a balanced month.
Cool sea
Sea temperatures average 9°C, so the water can feel cool.
Map
Weather map
Compare Guyana with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December30°C average high
December is close to Guyana's usual daytime heat, with little temperature swing across the year.
Warmest monthsAll year
Daytime heat stays consistently warm through the year.
Rain
December255mm average rain
December sits near Guyana's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to March and September to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December6.5 hours average sun
December is below Guyana's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsAugust to November
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December9°C average sea
December is close to Guyana'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
December54 weather score
December scores below Guyana's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsFebruary and September to November
These months have the strongest weather score in the monthly averages.
