Jaffna weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Fair
Best time to visit: January – March
What is the weather like in Jaffna in December?
In December, Jaffna is hot: daytime highs average 27 °C, and even at night it stays warm at around 25 °C. The sea averages 27.2 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 17 days, totalling 204 mm. The air is often humid and muggy. All in all, December is a so-so month for a holiday in Jaffna.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 51 | 59 | 84 |
| Day | 28° | 27° | 27° |
| Night | 25° | 25° | 25° |
| Sea | 29° | 27° | 27° |
| Sun | 5 h | 5 h | 7 h |
| Rain days | 22 | 17 | 8 |
More details for December
- Daylight
- 11 h 34 min06:18 – 17:52
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 26 km/haverage daily peakAll months
- Cloud cover
- 67 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+5:30Asia/Colombo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %37 %
- Few rainy daysweight 30 %7 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Jaffna in December: quick answers
Is Jaffna hot in December?
Yes. In December, Jaffna is hot: daytime highs average 27 °C and nights stay around 25 °C.
Can you swim in Jaffna in December?
Yes. In December the sea averages 27.2 °C – lovely and warm for swimming.
Does it rain much in Jaffna in December?
It rains often – on about 17 days, adding up to 204 mm.
Jaffna month by month
The whole year in JaffnaAll destinations: Sri LankaWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences