May weather forecast
Deniyaya, Sri Lanka

May

Weather in May

The last month of the spring, May, is another warm month in Deniyaya, Sri Lanka, with an average temperature fluctuating between 28.3°C (82.9°F) and 21.8°C (71.2°F).

Temperature

With the advent of May, Deniyaya's high-temperatures adjust to a moderately hot 28.3°C (82.9°F), closely aligning with the preceding month. In the month of May, the average low-temperature in Deniyaya usually rests at a pleasant 21.8°C (71.2°F).

Heat index

The heat index value during May is calculated to be a tropical 34°C (93.2°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially vital to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The months with the highest humidity in Deniyaya are May and June, with an average relative humidity of 88%.

Rainfall

In May, in Deniyaya, the rain falls for 29.8 days. Throughout May, 270mm (10.63") of precipitation is accumulated. In Deniyaya, during the entire year, the rain falls for 317.3 days and collects up to 2422mm (95.35") of precipitation.

Daylight

The average length of the day in May is 12h and 25min.
On the first day of May in Deniyaya, sunrise is at 05:54 and sunset at 18:15. On the last day of the month, sunrise is at 05:51 and sunset at 18:19 +0530.

Sunshine

The average sunshine in May in Deniyaya is 7.6h.

UV index

The months with the highest UV index in Deniyaya are January through August, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in May transforms into the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

Is it hot in Deniyaya during May?
The high-temperature, in May, in Deniyaya, is 28.3°C (82.9°F), while the low-temperature averages to 21.8°C (71.2°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in May is calculated to be 34°C (93.2°F).
What are the most humid months in Deniyaya?
The months with the highest humidity are May and June, with an average relative humidity of 88%.
What is the average humidity in May in Deniyaya?
In May, the average relative humidity in Deniyaya, Sri Lanka, is 88%.
How many days does it rain in May in Deniyaya?
In Deniyaya, in May, during 29.8 rainfall days, 270mm (10.63") of precipitation is typically accumulated.
What is the average length of the day in May in Deniyaya?
The average day length in May in Deniyaya, Sri Lanka, is 12h and 25min.
When is the sunrise / sunset in May in Deniyaya?
In May, on the first day of the month, sunrise is at 05:54 and sunset at 18:15. On the last day of the month, sunrise is at 05:51 and sunset at 18:19 +0530.
How long on average sun shines in May in Deniyaya?
The average sunshine duration in May in Deniyaya, Sri Lanka, is 7.6h.
What is the month with the highest UV index in Deniyaya?
The months with the highest UV index in Deniyaya are January through August, November and December, with an average maximum UV index of 6.
What is the UV index reading in May in Deniyaya?
In Deniyaya, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health risk from 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 May - Deniyaya, Sri Lanka
Average temperature in May
Deniyaya, Sri Lanka
  • Average high temperature in May: 28.3°C

The warmest month (with the highest average high temperature) is March (31.1°C).
The months with the lowest average high temperature are June and July (27.3°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 (18.7°C).

Average pressure in May - Deniyaya, Sri Lanka
Average pressure in May
Deniyaya, Sri Lanka
  • Average pressure in May: 1008.6mbar

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

Average wind speed in May - Deniyaya, Sri Lanka
Average wind speed in May
Deniyaya, Sri Lanka
  • Average wind speed in May: 6.5km/h

The windiest month (with the highest average wind speed) is July (8.8km/h).
The calmest months (with the lowest average wind speed) are February and March (3.9km/h).

Average humidity in May - Deniyaya, Sri Lanka
Average humidity in May
Deniyaya, Sri Lanka
  • Average humidity in May: 88%

The months with the highest relative humidity are May and June (88%).
The months with the lowest relative humidity are January and February (80%).

Average rainfall in May - Deniyaya, Sri Lanka
Average rainfall in May
Deniyaya, Sri Lanka
  • Average rainfall in May: 270mm

The wettest month (with the highest rainfall) is October (357mm).
The driest month (with the least rainfall) is January (85mm).

Average rainfall days in May - Deniyaya, Sri Lanka
Average rainfall days in May
Deniyaya, Sri Lanka
  • Average rainfall days in May: 29.8 days

The month with the highest number of rainy days is May (29.8 days).
The month with the least rainy days is January (18.9 days).

Average daylight in May / Average sunshine in May - Deniyaya, Sri Lanka
Average daylight in May /
Average sunshine in May
Deniyaya, Sri Lanka
  • Average daylight in May: 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 May: 7h and 4min

The month with the most sunshine is April (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in May - Deniyaya, Sri Lanka
Average sunshine days in May
Deniyaya, Sri Lanka
  • Average sunshine days in May: 0.8 days

The month with the most sunshine days is January (9.2 days).
The month with the least sunshine days is April (0.2 days).

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

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

Average cloud cover in May - Deniyaya, Sri Lanka
Average cloud cover in May
Deniyaya, Sri Lanka
  • Average cloud cover in May: 61

The month with the most cloud cover is June (Cloud cover 65).
The month with the least cloud cover is January (Cloud cover 33).

Average visibility in May - Deniyaya, Sri Lanka
Average visibility in May
Deniyaya, Sri Lanka
  • Average visibility in May: 7km

The months with the highest visibility are January, February, March, June, July, August and December (8km).
The months with the lowest visibility are April, May, September, October and November (7km).

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