August weather forecast
Kalutara, Sri Lanka

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Weather in August

August in Kalutara emulates July's weather pattern as both months share close climatic characteristics. The temperatures hover around a maximum of 28.6°C (83.5°F), mirroring July’s warmth. The ebbing monsoon means a decline in the number of rainfall days. Shortly after the monsoon breaks, sunshine duration displays an upward curve providing an inviting climate for tourists. The slowly warming coastal areas also add to an enjoyable holiday weather.

Temperature

Kalutara notes the coldest temperatures in August, with a high average of 28.6°C (83.5°F) and a low of 25.5°C (77.9°F).

Heat index

In August, the average heat index is estimated at a hot 34°C (93.2°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

The months with the highest humidity are June through August, with an average relative humidity of 83%.

Rainfall

In Kalutara, Sri Lanka, during August, the rain falls for 29.5 days and regularly aggregates up to 282mm (11.1") of precipitation. In Kalutara, during the entire year, the rain falls for 273.8 days and collects up to 2059mm (81.06") of precipitation.

Sea temperature

The month with the coldest seawater is August, with an average sea temperature of 27.2°C (81°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

The average length of the day in August is 12h and 20min.
On the first day of the month, sunrise is at 06:04 and sunset at 18:28. On the last day of August, sunrise is at 06:03 and sunset at 18:17 +0530.

Sunshine

The average sunshine in August in Kalutara is 7.2h.

UV index

May, June and August, with an average maximum UV index of 6, are months with the lowest UV index in Kalutara. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 6 in August, converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Attention! The reflection of both water and sand can increase the intensity of UV rays.

Frequently asked questions

What part of the year is the coldest in Kalutara?

The coldest temperatures in Kalutara, Sri Lanka, occur during August, when averages reach a peak of 28.6°C (83.5°F) and a low of 25.5°C (77.9°F).

How hot does it get in Kalutara in August?

The high-temperature in Kalutara during August is 28.6°C (83.5°F) and the low-temperature is 25.5°C (77.9°F). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 34°C (93.2°F).

What is the most humid month in Kalutara?

June through August, with an average relative humidity of 83%, are most humid months.

What is the average humidity in August in Kalutara?

In Kalutara, Sri Lanka, the average relative humidity in August is 83%.

How much does it rain in Kalutara in August?

In Kalutara, Sri Lanka, in August, during 29.5 rainfall days, 282mm (11.1") of precipitation is typically accumulated.

What is the month with the coldest sea water in Kalutara?

With an average sea temperature of 27.2°C (81°F), August is the month with the coldest seawater.

What is the sea water temperature in August in Kalutara?

In Kalutara, Sri Lanka, the average seawater temperature in August is 27.2°C (81°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 average length of the day in August in Kalutara?

In August, the average day length in Kalutara, Sri Lanka, is 12h and 20min.

When is the sunrise / sunset in August in Kalutara?

On the first day of August in Kalutara, Sri Lanka, sunrise is at 06:04 and sunset at 18:28. On the last day of the month, sunrise is at 06:03 and sunset at 18:17 +0530.

How many hours of sunshine does Kalutara have in August?

In August, the average sunshine duration in Kalutara is 7.2h.

When is the lowest UV index in Kalutara?

May, June and August, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in August in Kalutara?

In Kalutara, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in August
Kalutara, Sri Lanka

Average temperature in August - Kalutara, Sri Lanka
  • Average high temperature in August: 28.6°C

The warmest months (with the highest average high temperature) are March and April (31.3°C).
The month with the lowest average high temperature is August (28.6°C).

  • Average low temperature in August: 25.5°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.4°C).

Average pressure in August
Kalutara, Sri Lanka

Average pressure in August - Kalutara, Sri Lanka
  • Average pressure in August: 1009.2mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.7mbar).

Average wind speed in August
Kalutara, Sri Lanka

Average wind speed in August - Kalutara, Sri Lanka
  • Average wind speed in August: 15.1km/h

The windiest month (with the highest average wind speed) is June (15.9km/h).
The calmest month (with the lowest average wind speed) is March (7.9km/h).

Average humidity in August
Kalutara, Sri Lanka

Average humidity in August - Kalutara, Sri Lanka
  • Average humidity in August: 83%

The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (75%).

Average rainfall in August
Kalutara, Sri Lanka

Average rainfall in August - Kalutara, Sri Lanka
  • Average rainfall in August: 282mm

The wettest month (with the highest rainfall) is June (350mm).
The driest month (with the least rainfall) is January (25mm).

Average rainfall days in August
Kalutara, Sri Lanka

Average rainfall days in August - Kalutara, Sri Lanka
  • Average rainfall days in August: 29.5 days

The months with the highest number of rainy days are July and August (29.5 days).
The month with the least rainy days is January (8.9 days).

Average sea temperature in August
Kalutara, Sri Lanka

Average sea temperature in August - Kalutara, Sri Lanka
  • Average sea temperature in August: 27.2°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

Average daylight in August /
Average sunshine in August
Kalutara, Sri Lanka

Average daylight in August / Average sunshine in August - Kalutara, Sri Lanka
  • Average daylight in August: 12h and 2min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 48min).

  • Average sunshine in August: 7h and 1min

The month with the most sunshine is January (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 48min).

Average sunshine days in August
Kalutara, Sri Lanka

Average sunshine days in August - Kalutara, Sri Lanka
  • Average sunshine days in August: 0.5 days

The month with the most sunshine days is January (21 days).
The months with the least sunshine days are June and July (0.3 days).

Average UV index in August
Kalutara, Sri Lanka

Average UV index in August - Kalutara, Sri Lanka
  • Average UV index in August: 6

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

Average cloud cover in August
Kalutara, Sri Lanka

Average cloud cover in August - Kalutara, Sri Lanka
  • Average cloud cover in August: 54

The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in August
Kalutara, Sri Lanka

Average visibility in August - Kalutara, Sri Lanka
  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).

Kalutara, Sri Lanka

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