Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
October
Weather in October
Temperature
As Heerassagala transitions from September to October, the average high-temperatures adjust to a still moderately hot 29.4°C (84.9°F), nearly the same as the previous 29.5°C (85.1°F). During October, Heerassagala's temperature averages to a pleasant 20.7°C (69.3°F) at night.Heat index
For October, the heat index is evaluated at a very hot 36°C (96.8°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Know that the heat index computations account for shaded terrains and slight winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in October is 80%.Rainfall
October is the month with the most rainfall in Heerassagala. Rain falls for 27.4 days and accumulates 301mm (11.85") of precipitation.Daylight
The average length of the day in October is 11h and 58min.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 17:47 +0530.
Sunshine
In October, the average sunshine is 7.9h.UV index
With an average maximum UV index of 5, October is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in October transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. To protect against the Sun's most potent rays, avoid direct exposure around midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Heerassagala in October?
What is the average humidity in October in Heerassagala?
What is the rainiest month in Heerassagala?
How many days does it rain in October in Heerassagala?
What is the average length of the day in October in Heerassagala?
What time are sunrise and sunset in October in Heerassagala?
How long on average sun shines in October in Heerassagala?
When is the lowest UV index in Heerassagala?
How high is the UV index in October in Heerassagala?
Average temperature in October
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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
Heerassagala, 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).
