Mild
Average highs are around 25°C, so days are mild rather than hot.
December verdict
São Thomé das Letras, Brazil in December
Weather score39Poor
Poor for holiday weather
Average highs are around 25°C, so days are mild rather than hot. Sunshine averages 5.7h per day, enough for a balanced month. Rainfall averages 305mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
25°C
Rain
305mm
Sun
5.7h
Weather score
39
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 305mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.7h per day, enough for a balanced month.
Map
Weather map
Compare São Thomé das Letras, Brazil with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December25°C average high
December sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJanuary to March and October to December
This stretch sets the upper range for average daytime heat.
Rain
December305mm average rain
December is one of São Thomé das Letras' wettest months, so rain is likely to be a major planning factor.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December5.7 hours average sun
December is one of São Thomé das Letras' cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJuly to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
December39 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsApril to September
These months have the strongest weather score in the monthly averages.
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