October weather forecast
Hiriwadunna, Sri Lanka

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Weather in October

October, the same as September, in Hiriwadunna, Sri Lanka, is another hot autumn month, with an average temperature varying between 23.2°C (73.8°F) and 32.7°C (90.9°F).

Temperature

Transitioning from September to October, Hiriwadunna observes an average high-temperature of a still hot 32.7°C (90.9°F), differing subtly from the previous month. Throughout October, an average nighttime temperature of 23.2°C (73.8°F) is experienced in Hiriwadunna.

Heat index

October's mean heat index is appraised at a burning hot 45°C (113°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Hiriwadunna, the average relative humidity in October is 75%.

Rainfall

The month with the most rainfall is October, when the rain falls for 22.6 days and typically aggregates up to 214mm (8.43") of precipitation.

Daylight

In October, the average length of the day in Hiriwadunna is 11h and 57min.
On the first day of October, sunrise is at 05:55 and sunset at 17:58. On the last day of the month, sunrise is at 05:55 and sunset at 17:45 +0530.

Sunshine

The average sunshine in October is 8.3h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In October, the UV index of 7 transforms into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

How hot does it get in Hiriwadunna in October?

In Hiriwadunna, 32.7°C (90.9°F) is the average high-temperature and 23.2°C (73.8°F) is the average low-temperature during October. In October, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 45°C (113°F).

What is the average humidity in October in Hiriwadunna?

The average relative humidity in October in Hiriwadunna, Sri Lanka, is 75%.

What is the wettest month in Hiriwadunna?

The month with the most rainfall in Hiriwadunna is October, when the rain falls for 22.6 days and typically aggregates up to 214mm (8.43") of precipitation.

How many days does it rain in October in Hiriwadunna?

In Hiriwadunna, Sri Lanka, in October, during 22.6 rainfall days, 214mm (8.43") of precipitation is typically accumulated.

How many hours of daylight does Hiriwadunna have in October?

In October, the average day length in Hiriwadunna is 11h and 57min.

What time are sunrise and sunset in October in Hiriwadunna?

On the first day of October, sunrise is at 05:55 and sunset at 17:58. On the last day of the month, sunrise is at 05:55 and sunset at 17:45 +0530.

How long on average sun shines in October in Hiriwadunna?

In Hiriwadunna, Sri Lanka, the average sunshine duration in October is 8.3h.

When is the highest UV index in Hiriwadunna?

The months with the highest UV index are February through October, with an average maximum UV index of 7.

What is the UV index intensity in October in Hiriwadunna?

The average daily maximum UV index in October in Hiriwadunna, Sri Lanka, is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.

Average temperature in October
Hiriwadunna, Sri Lanka

Average temperature in October - Hiriwadunna, Sri Lanka
  • Average high temperature in October: 32.7°C

The warmest month (with the highest average high temperature) is April (34.9°C).
The months with the lowest average high temperature are January and December (29.3°C).

  • Average low temperature in October: 23.2°C

The month with the highest average low temperature is June (24.8°C).
The coldest months (with the lowest average low temperature) are January and February (20°C).

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Average pressure in October
Hiriwadunna, Sri Lanka

Average pressure in October - Hiriwadunna, Sri Lanka
  • Average pressure in October: 1009.5mbar

The month with the highest atmospheric pressure is January (1012mbar).
The month with the lowest atmospheric pressure is June (1007.5mbar).

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Average wind speed in October
Hiriwadunna, Sri Lanka

Average wind speed in October - Hiriwadunna, Sri Lanka
  • Average wind speed in October: 11.1km/h

The windiest month (with the highest average wind speed) is June (23.8km/h).
The calmest month (with the lowest average wind speed) is April (7.1km/h).

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Average humidity in October
Hiriwadunna, Sri Lanka

Average humidity in October - Hiriwadunna, Sri Lanka
  • Average humidity in October: 75%

The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are June, July, August and September (67%).

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Average rainfall in October
Hiriwadunna, Sri Lanka

Average rainfall in October - Hiriwadunna, Sri Lanka
  • Average rainfall in October: 214mm

The wettest month (with the highest rainfall) is October (214mm).
The driest month (with the least rainfall) is June (15mm).

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Average rainfall days in October
Hiriwadunna, Sri Lanka

Average rainfall days in October - Hiriwadunna, Sri Lanka
  • Average rainfall days in October: 22.6 days

The month with the highest number of rainy days is November (24.1 days).
The month with the least rainy days is June (7.8 days).

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Average daylight in October /
Average sunshine in October
Hiriwadunna, Sri Lanka

Average daylight in October / Average sunshine in October - Hiriwadunna, Sri Lanka
  • Average daylight in October: 11h and 5min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 42min).

  • Average sunshine in October: 8h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

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Average sunshine days in October
Hiriwadunna, Sri Lanka

Average sunshine days in October - Hiriwadunna, Sri Lanka
  • Average sunshine days in October: 6.4 days

The month with the most sunshine days is July (16 days).
The month with the least sunshine days is November (4.2 days).

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Average UV index in October
Hiriwadunna, Sri Lanka

Average UV index in October - Hiriwadunna, Sri Lanka
  • Average UV index in October: 7

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

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Average cloud cover in October
Hiriwadunna, Sri Lanka

Average cloud cover in October - Hiriwadunna, Sri Lanka
  • Average cloud cover in October: 36

The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is May (Cloud cover 26).

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Average visibility in October
Hiriwadunna, Sri Lanka

Average visibility in October - Hiriwadunna, Sri Lanka
  • Average visibility in October: 9km

The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January and December (7km).

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Hiriwadunna, Sri Lanka

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