January weather forecast and climate
Jaffna, Sri Lanka

Weather in January

January, like December, in Jaffna, Sri Lanka, is a moderately hot winter month, with average temperature ranging between max 26.8°C (80.2°F) and min 25.5°C (77.9°F).

Temperature

The coldest month is January, with an average high-temperature of 26.8°C (80.2°F) and an average low-temperature of 25.5°C (77.9°F).

Humidity

In Jaffna, the average relative humidity in January is 76%.

Rainfall

In Jaffna, in January, during 11.2 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Jaffna, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Sea temperature

With an average sea temperature of 26.8°C (80.2°F), January is the month with the coldest seawater in Jaffna.
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

Months with the shortest days in Jaffna are January and December, with an average of 11.6h of daylight.

Sunshine

In Jaffna, Sri Lanka, the average sunshine is 8.5h.

UV index

Months with the highest UV index in Jaffna, Sri Lanka, are January through October and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 7 in January transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the coldest month in Jaffna?

The coldest month in Jaffna is January, with an average high-temperature of 26.8°C (80.2°F) and an average low-temperature of 25.5°C (77.9°F).

What is the average humidity in January in Jaffna?

The average relative humidity in January in Jaffna is 76%.

How many days does it rain in January in Jaffna?

In Jaffna, Sri Lanka, during January, the rain falls for 11.2 days and regularly aggregates up to 33mm (1.3") of precipitation.

What month is the sea coldest in Jaffna?

With an average sea temperature of 26.8°C (80.2°F), January is the month with the coldest seawater in Jaffna.

What is the sea water temperature in January in Jaffna?

In Jaffna, Sri Lanka, in January, the average water temperature is 26.8°C (80.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Jaffna?

Months with the shortest days in Jaffna are January and December, with an average of 11.6h of daylight.

How many hours of daylight does Jaffna have in January?

The average length of the day in January is 11.6h.

How long on average sun shines in January in Jaffna?

In January, the average sunshine in Jaffna, Sri Lanka, is 8.5h.

When is the highest UV index in Jaffna?

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Jaffna, Sri Lanka.

What is the UV index reading in January in Jaffna?

The average daily maximum UV index in January in Jaffna, Sri Lanka, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in January
Jaffna, Sri Lanka

Average temperature in January - Jaffna, Sri Lanka
  • Average high temperature in January: 26.8°C

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is January (26.8°C).

  • Average low temperature in January: 25.5°C

The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).

[Resources]

Average pressure in January
Jaffna, Sri Lanka

Average pressure in January - Jaffna, Sri Lanka
  • Average pressure in January: 1012.5mbar

The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.9mbar).

[Resources]

Average wind speed in January
Jaffna, Sri Lanka

Average wind speed in January - Jaffna, Sri Lanka
  • Average wind speed in January: 22.9km/h

The windiest month (with the highest average wind speed) is June (33.8km/h).
The calmest months (with the lowest average wind speed) are March and April (16.7km/h).

[Resources]

Average humidity in January
Jaffna, Sri Lanka

Average humidity in January - Jaffna, Sri Lanka
  • Average humidity in January: 76%

Months with the highest relative humidity are May, August and September (79%).
The month with the lowest relative humidity is March (75%).

[Resources]

Average rainfall in January
Jaffna, Sri Lanka

Average rainfall in January - Jaffna, Sri Lanka
  • Average rainfall in January: 33mm

The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is March (13mm).

[Resources]

Average rainfall days in January
Jaffna, Sri Lanka

Average rainfall days in January - Jaffna, Sri Lanka
  • Average rainfall days in January: 11.2 days

The month with the highest number of rainy days is October (22.6 days).
The month with the least rainy days is March (5.8 days).

[Resources]

Average sea temperature in January
Jaffna, Sri Lanka

Average sea temperature in January - Jaffna, Sri Lanka
  • Average sea temperature in January: 26.8°C

The best month for swimming (with the highest average sea temperature) is April (30.1°C).
The coldest month (with the lowest average sea temperature) is January (26.8°C).

[Resources]

Average daylight in January /
Average sunshine in January
Jaffna, Sri Lanka

Average daylight in January / Average sunshine in January - Jaffna, Sri Lanka
  • Average daylight in January: 11.6h

The month with the longest days is June (Average daylight: 12.7h).
Months with the shortest days are January and December (Average daylight: 11.6h).

  • Average sunshine in January: 8.5h

The month with the most sunshine is June (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 5.5h).

[Resources]

Average sunshine days in January
Jaffna, Sri Lanka

Average sunshine days in January - Jaffna, Sri Lanka
  • Average sunshine days in January: 15.4 days

The month with the most sunshine days is March (23.9 days).
The month with the least sunshine days is November (6.3 days).

[Resources]

Average UV index in January
Jaffna, Sri Lanka

Average UV index in January - Jaffna, Sri Lanka
  • Average UV index in January: 7

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).

[Resources]

Average cloud cover in January
Jaffna, Sri Lanka

Average cloud cover in January - Jaffna, Sri Lanka
  • Average cloud cover in January: 34

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).

[Resources]

Average visibility in January
Jaffna, Sri Lanka

Average visibility in January - Jaffna, Sri Lanka
  • Average visibility in January: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location