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

July weather forecast and climate
Jaffna, Sri Lanka

July, the same as June, in Jaffna, Sri Lanka, is a hot summer month, with average temperature ranging between max 33°C (91.4°F) and min 25°C (77°F).
The ideal sea water temperature of 29.3°C (84.7°F) and only 3 rainfall days, with 20mm (0.8") of accumulated rainfall, make July the best time for swimming and other water activities.

Temperature

In Jaffna, Sri Lanka, the average high-temperature remains equal as in June - a still tropical 33°C (91.4°F). The average low-temperature, in July, is 25°C (77°F).

Rainfall

In Jaffna, during July, the rain falls for 3 days and regularly aggregates up to 20mm (0.8") of precipitation. Throughout the year, in Jaffna, Sri Lanka, there are 57 rainfall days, and 1200mm (47.2") of precipitation is accumulated.

Sea temperature

In Jaffna, the average seawater temperature in July is 29.3°C (84.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in Jaffna is 12.6h.

Sunshine

June, July, October through December, with an average of 6h of sunshine, are months with the least sunshine in Jaffna.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an ultimate health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 12 transform into the following instructions:
Take all necessary precautions, as unprotected skin can burn in minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in July in Jaffna?

In July, in Jaffna, Sri Lanka, the average high-temperature is 33°C (91.4°F), and the average low-temperature is 25°C (77°F).

How many days does it rain in July in Jaffna?

In Jaffna, during July, the rain falls for 3 days and regularly aggregates up to 20mm (0.8") of precipitation.

How warm is the water in July in Jaffna?

In Jaffna, Sri Lanka, in July, the average water temperature is 29.3°C (84.7°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

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

The average length of the day in July in Jaffna is 12.6h.

What is the month with the least sunshine in Jaffna?

Months with the least sunshine are June, July, October through December, with an average of 6h of sunshine.

How many hours of sunshine does Jaffna have in July?

In Jaffna, Sri Lanka, the average sunshine in July is 6h.

When is the highest UV index in Jaffna?

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

How high is the UV index in July in Jaffna?

The average daily maximum UV index in July is 12. A UV Index of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV radiation.
Average temperature in July - Jaffna, Sri Lanka
  • Average high temperature in July: 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 July: 25°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 July - Jaffna, Sri Lanka
  • Average rainfall in July: 20mm

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

Average rainfall days in July - Jaffna, Sri Lanka
  • Average rainfall days in July: 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 July - Jaffna, Sri Lanka
  • Average sea temperature in July: 29.3°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 July / Average sunshine in July - Jaffna, Sri Lanka
  • Average daylight in July: 12.6h

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 July: 6h

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 July - Jaffna, Sri Lanka
  • Average UV index in July: 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).