October weather forecast
Retiyagama, Sri Lanka

October

Weather in October

October, the same as September, is another warm autumn month in Retiyagama, Sri Lanka, with an average temperature varying between 29.4°C (84.9°F) and 20.7°C (69.3°F).

Temperature

October registers an average high-temperature of a still moderately hot 29.4°C (84.9°F), slightly varied from September's 29.5°C (85.1°F). In Retiyagama, in October, the average low-temperature is a pleasant 20.7°C (69.3°F).

Heat index

In October, the heat index is estimated at a torrid 36°C (96.8°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In Retiyagama, the average relative humidity in October is 80%.

Rainfall

October is the month with the most rainfall. Rain falls for 27.4 days and accumulates 301mm (11.85") of precipitation.

Daylight

In October, the average length of the day in Retiyagama is 11h and 58min.
On the first day of October, sunrise is at 05:54 and sunset at 17:58. On the last day of the month, sunrise is at 05:54 and sunset at 17:46 +0530.

Sunshine

In Retiyagama, the average sunshine in October is 7.9h.

UV index

With an average maximum UV index of 5, October is the month with the lowest UV index in Retiyagama. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in October leads to these recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Frequently asked questions

How hot does it get in Retiyagama in October?
In Retiyagama, in October, the average high-temperature is 29.4°C (84.9°F), and the average low-temperature is 20.7°C (69.3°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in October is estimated at 36°C (96.8°F).
What is the average humidity in October in Retiyagama?
In October, the average relative humidity in Retiyagama is 80%.
What is the rainiest month in Retiyagama?
The month with the most rainfall in Retiyagama, Sri Lanka, is October, when the rain falls for 27.4 days and typically aggregates up to 301mm (11.85") of precipitation.
How much does it rain in Retiyagama in October?
In Retiyagama, in October, during 27.4 rainfall days, 301mm (11.85") of precipitation is typically accumulated.
What is the average length of the day in October in Retiyagama?
In October, the average day length in Retiyagama is 11h and 58min.
When is the sunrise / sunset in October in Retiyagama?
In October, on the first day of the month, sunrise is at 05:54 and sunset at 17:58. On the last day of the month, in Retiyagama, Sri Lanka, sunrise is at 05:54 and sunset at 17:46 +0530.
How long on average sun shines in October in Retiyagama?
In October, the average sunshine duration in Retiyagama is 7.9h.
When is the lowest UV index in Retiyagama?
The month with the lowest UV index in Retiyagama, Sri Lanka, is October, with an average maximum UV index of 5.
What is the UV index reading in October in Retiyagama?
The average daily maximum UV index in October in Retiyagama, Sri Lanka, is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in October
Retiyagama, Sri Lanka
  • Average high temperature in October: 29.4°C

The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).

  • Average low temperature in October: 20.7°C

The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).

Average pressure in October
Retiyagama, Sri Lanka
  • Average pressure in October: 1009.7mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).

Average wind speed in October
Retiyagama, Sri Lanka
  • Average wind speed in October: 6.8km/h

The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).

Average humidity in October
Retiyagama, Sri Lanka
  • Average humidity in October: 80%

The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).

Average rainfall in October
Retiyagama, Sri Lanka
  • Average rainfall in October: 301mm

The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).

Average rainfall days in October
Retiyagama, Sri Lanka
  • Average rainfall days in October: 27.4 days

The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).

Average daylight in October /
Average sunshine in October
Retiyagama, Sri Lanka
  • Average daylight in October: 12h and 0min

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 42min).

  • Average sunshine in October: 7h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in October
Retiyagama, Sri Lanka
  • Average sunshine days in October: 2.3 days

The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).

Average UV index in October
Retiyagama, Sri Lanka
  • Average UV index in October: 5

The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).

Average cloud cover in October
Retiyagama, Sri Lanka
  • Average cloud cover in October: 41

The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).

Average visibility in October
Retiyagama, Sri Lanka
  • Average visibility in October: 9km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).

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