Jaffna
Sri Lanka
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Jaffna, Sri Lanka

April, the same as March, in Jaffna, Sri Lanka, is another hot spring month, with average temperature fluctuating between 27°C (80.6°F) and 33°C (91.4°F).

Temperature

In Jaffna, the average high-temperature in April is relatively the same as in March - a still tropical 33°C (91.4°F). The average low-temperature, is 27°C (80.6°F).

Rainfall

In Jaffna, Sri Lanka, during 3 rainfall days, 50mm (2") of precipitation is typically accumulated. In Jaffna, during the entire year, the rain falls for 57 days and collects up to 1200mm (47.2") of precipitation.

Sea temperature

April is the month with the warmest seawater in Jaffna, with an average sea temperature of 30.1°C (86.2°F). The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

Daylight

In April, the average length of the day in Jaffna is 12.3h.

Sunshine

In April, the average sunshine is 8h.

UV index

Months with the highest UV index in Jaffna are February through October, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV radiation for average individuals.
The daily maximum UV index of 12 interpret into the following advice:
Practice all essential precautions. Protection against sun damage is crucial. 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. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in April in Jaffna?

The average high-temperature, in April, in Jaffna, is 33°C (91.4°F), while the average low-temperature is 27°C (80.6°F).

How much does it rain in Jaffna in April?

In April, in Jaffna, Sri Lanka, the rain falls for 3 days. Throughout April, 50mm (2") of precipitation is accumulated.

When is the sea warmest in Jaffna?

With an average sea temperature of 30.1°C (86.2°F), April is the month with the warmest seawater. The water temperature above 30°C (86°F) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

How warm is the water in April in Jaffna?

In April, the average sea temperature is 30.1°C (86.2°F). For swimming, other intense water activities, temperature above 30°C (86°F) is arguably unpleasant, as the water cooling effect is missing.

What is the average length of the day in April in Jaffna?

In April, the average length of the day in Jaffna, Sri Lanka, is 12.3h.

How many hours of sunshine does Jaffna have in April?

In Jaffna, Sri Lanka, the average sunshine in April is 8h.

What are the months with the highest UV index in Jaffna?

February through October, with an average maximum UV index of 12, are months with the highest UV index in Jaffna.

What is the UV index reading in April in Jaffna?

The average daily maximum UV index in April in Jaffna, Sri Lanka, is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in April - Jaffna, Sri Lanka
  • Average high temperature in April: 33°C

The warmest month (with the highest average high temperature) is May (34°C).
Months with the lowest average high temperature are January and December (28°C).

  • Average low temperature in April: 27°C

The month with the highest average low temperature is April (27°C).
The coldest month (with the lowest average low temperature) is January (23°C).

Average rainfall in April - Jaffna, Sri Lanka
  • Average rainfall in April: 50mm

The wettest month (with the highest rainfall) is November (380mm).
The driest month (with the lowest rainfall) is June (10mm).

Average rainfall days in April - Jaffna, Sri Lanka
  • Average rainfall days in April: 3 days

The month with the highest number of rainy days is November (12 days).
The month with the lowest number of rainy days is June (1 days).

Average sea temperature in April - Jaffna, Sri Lanka
  • Average sea temperature in April: 30.1°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).

Average daylight in April / Average sunshine in April - Jaffna, Sri Lanka
  • Average daylight in April: 12.3h

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

  • Average sunshine in April: 8h

The month with most sunshine is March (Average sunshine: 9h).
Months with least sunshine are June, July, October, November and December (Average sunshine: 6).

Average UV index in April - Jaffna, Sri Lanka
  • Average UV index in April: 12

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are November and December (UV index 10).