May weather forecast
Penideniya, Sri Lanka

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Weather in May

May, the last month of the spring in Penideniya, is also a hot month, with temperature in the range of an average high of 30.1°C (86.2°F) and an average low of 21.8°C (71.2°F).

Temperature

The transition into May notes an average high-temperature of a still hot 30.1°C (86.2°F), revealing a mild distinction from the 31.2°C (88.2°F) in April. In May, the recorded average low-temperature is a pleasant 21.8°C (71.2°F).

Heat index

In May, the heat index is computed to be a torrid 38°C (100.4°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Penideniya, the average relative humidity in May is 80%.

Rainfall

In May, in Penideniya, Sri Lanka, the rain falls for 28.6 days. Throughout May, 163mm (6.42") of precipitation is accumulated. Throughout the year, in Penideniya, Sri Lanka, there are 278.9 rainfall days, and 1477mm (58.15") of precipitation is accumulated.

Daylight

In Penideniya, the average length of the day in May is 12h and 27min.
On the first day of the month, sunrise is at 05:53 and sunset at 18:16. On the last day of May, sunrise is at 05:49 and sunset at 18:20 +0530.

Sunshine

In Penideniya, Sri Lanka, the average sunshine in May is 10.4h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 in May translates into these instructions:
Shun overexposure. Protection from sun ravages is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.
Updated: Feb 6, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot does it get in Penideniya in May?

An average high-temperature, in May, in Penideniya, is 30.1°C (86.2°F) and the average low-temperature is 21.8°C (71.2°F). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 38°C (100.4°F).

What is the average humidity in May in Penideniya?

In Penideniya, Sri Lanka, the average relative humidity in May is 80%.

How much does it rain in Penideniya in May?

In Penideniya, Sri Lanka, during May, the rain falls for 28.6 days and regularly aggregates up to 163mm (6.42") of precipitation.

How many hours of daylight does Penideniya have in May?

In Penideniya, the average day length in May is 12h and 27min.

What time are sunrise and sunset in May in Penideniya?

On the first day of May in Penideniya, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:49 and sunset at 18:20 +0530.

How many hours of sunshine does Penideniya have in May?

The average sunshine duration in May in Penideniya is 10.4h.

When is the highest UV index in Penideniya?

The months with the highest UV index in Penideniya are January through September, November and December, with an average maximum UV index of 6.

How high is the UV index in May in Penideniya?

In Penideniya, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to Sun's UV rays.

Average temperature in May
Penideniya, Sri Lanka

Average temperature in May - Penideniya, Sri Lanka
  • Average high temperature in May: 30.1°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 May: 21.8°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 May
Penideniya, Sri Lanka

Average pressure in May - Penideniya, Sri Lanka
  • Average pressure in May: 1008.2mbar

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 May
Penideniya, Sri Lanka

Average wind speed in May - Penideniya, Sri Lanka
  • Average wind speed in May: 9.3km/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 May
Penideniya, Sri Lanka

Average humidity in May - Penideniya, Sri Lanka
  • Average humidity in May: 80%

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

Average rainfall in May
Penideniya, Sri Lanka

Average rainfall in May - Penideniya, Sri Lanka
  • Average rainfall in May: 163mm

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

Average rainfall days in May
Penideniya, Sri Lanka

Average rainfall days in May - Penideniya, Sri Lanka
  • Average rainfall days in May: 28.6 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 May /
Average sunshine in May
Penideniya, Sri Lanka

Average daylight in May / Average sunshine in May - Penideniya, Sri Lanka
  • Average daylight in May: 12h and 3min

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 May: 10h and 2min

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 May
Penideniya, Sri Lanka

Average sunshine days in May - Penideniya, Sri Lanka
  • Average sunshine days in May: 1.2 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 May
Penideniya, Sri Lanka

Average UV index in May - Penideniya, Sri Lanka
  • Average UV index in May: 6

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 May
Penideniya, Sri Lanka

Average cloud cover in May - Penideniya, Sri Lanka
  • Average cloud cover in May: 35

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 May
Penideniya, Sri Lanka

Average visibility in May - Penideniya, Sri Lanka
  • Average visibility in May: 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).

Penideniya, Sri Lanka

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