Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
December verdict
Jaffna, Sri Lanka in December
Weather score59Good
Good for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 276mm, so showers are a real planning factor.
December weather
Monthly averages
Temp
28°C
Rain
276mm
Sun
6.1h
Sea
27°C
Weather score
59
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 276mm, so showers are a real planning factor.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Warm sea
Sea temperatures average 27°C, so swimming is usually comfortable by monthly-average standards.
Map
Weather map
Compare Jaffna, Sri Lanka with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December28°C average high
December is cooler than the yearly average, which can make sightseeing feel gentler than in hotter months.
Warmest monthsApril to September
This stretch sets the upper range for average daytime heat.
Rain
December276mm average rain
December is one of Jaffna's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December6.1 hours average sun
December is below Jaffna's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsFebruary to April
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December27°C average sea
December is below Jaffna's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaApril to June
Sea temperatures are usually near 31°C in this stretch, so swimming comfort is at its strongest.
Weather score
December59 weather score
December scores below Jaffna's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March
These months have the strongest weather score in the monthly averages.