Jaffna weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: January – March
What is the weather like in Jaffna in May?
In May, Jaffna is hot: daytime highs average 31 °C, and even at night it stays warm at around 28 °C. The sea averages 29.8 °C – almost as warm as a bath. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 67 mm. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. It is often windy, with gusts of around 32 km/h. All in all, May is a good month for a holiday in Jaffna.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 12 h 34 min05:49 – 18:23
- UV index
- 13 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 32 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 28 days30 °C or moreAll months
- Time zone
- UTC+5:30Asia/Colombo
How the score comes together
- Temperatureweight 50 %49 %
- Sunshineweight 20 %82 %
- Few rainy daysweight 30 %69 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
- Windproof jacket
Jaffna in May: quick answers
Is Jaffna hot in May?
Yes. In May, Jaffna is hot: daytime highs average 31 °C and nights stay around 28 °C. On about 28 days the thermometer climbs to 30 °C or more.
Can you swim in Jaffna in May?
Yes. In May the sea averages 29.8 °C – almost as warm as a bath.
Does it rain much in Jaffna in May?
Rain falls on about 8 days, adding up to 67 mm.
Jaffna month by month
The whole year in JaffnaAll destinations: Sri LankaWhere to go in MaySea temperature in May
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