May weather forecast
Kollupitiya, Sri Lanka

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Weather in May

May, the last month of the spring in Kollupitiya, is also a hot month, with an average temperature ranging between min 26.3°C (79.3°F) and max 30.6°C (87.1°F).

Temperature

On the advent of May, Kollupitiya's average high-temperature exhibits a minor adjustment to a still hot 30.6°C (87.1°F) from April's 31.8°C (89.2°F). Nights in May cool down, indicating a minor disparity from daytime highs with an average low-temperature of 26.3°C (79.3°F).

Heat index

Throughout May, the heat index is evaluated at a scorching 40°C (104°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Kollupitiya, the average relative humidity in May is 81%.

Rainfall

In Kollupitiya, Sri Lanka, in May, it is raining for 28.8 days, with typically 306mm (12.05") of accumulated precipitation. Throughout the year, in Kollupitiya, there are 289.4 rainfall days, and 2262mm (89.06") of precipitation is accumulated.

Daylight

The average length of the day in May in Kollupitiya is 12h and 26min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:18. On the last day of May, in Kollupitiya, Sri Lanka, sunrise is at 05:53 and sunset at 18:23 +0530.

Sunshine

In Kollupitiya, the average sunshine in May is 8.6h.

UV index

The months with the lowest UV index in Kollupitiya, Sri Lanka, are May, June, August and October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 6 in May leads to these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

How hot is May in Kollupitiya?

In Kollupitiya, 30.6°C (87.1°F) is the average high-temperature and 26.3°C (79.3°F) is the average low-temperature during May. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in May is evaluated at 40°C (104°F).

What is the average humidity in May in Kollupitiya?

In May, the average relative humidity in Kollupitiya is 81%.

How many days does it rain in May in Kollupitiya?

In Kollupitiya, Sri Lanka, in May, during 28.8 rainfall days, 306mm (12.05") of precipitation is typically accumulated.

What is the average length of the day in May in Kollupitiya?

In Kollupitiya, the average day length in May is 12h and 26min.

When is the sunrise / sunset in May in Kollupitiya?

On the first day of May, sunrise is at 05:56 and sunset at 18:18. On the last day of the month, sunrise is at 05:53 and sunset at 18:23 +0530.

How many hours of sunshine does Kollupitiya have in May?

The average sunshine duration in May in Kollupitiya, Sri Lanka, is 8.6h.

What are the months with the lowest UV index in Kollupitiya?

The months with the lowest UV index in Kollupitiya are May, June, August and October, with an average maximum UV index of 6.

What is the UV index intensity in May in Kollupitiya?

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

Average temperature in May
Kollupitiya, Sri Lanka

Average temperature in May - Kollupitiya, Sri Lanka
  • Average high temperature in May: 30.6°C

The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).

  • Average low temperature in May: 26.3°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).

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Average pressure in May
Kollupitiya, Sri Lanka

Average pressure in May - Kollupitiya, 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).

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Average wind speed in May
Kollupitiya, Sri Lanka

Average wind speed in May - Kollupitiya, Sri Lanka
  • Average wind speed in May: 12.9km/h

The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

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Average humidity in May
Kollupitiya, Sri Lanka

Average humidity in May - Kollupitiya, Sri Lanka
  • Average humidity in May: 81%

The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).

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Average rainfall in May
Kollupitiya, Sri Lanka

Average rainfall in May - Kollupitiya, Sri Lanka
  • Average rainfall in May: 306mm

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

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Average rainfall days in May
Kollupitiya, Sri Lanka

Average rainfall days in May - Kollupitiya, Sri Lanka
  • Average rainfall days in May: 28.8 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).

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Average daylight in May /
Average sunshine in May
Kollupitiya, Sri Lanka

Average daylight in May / Average sunshine in May - Kollupitiya, 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 42min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).

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Average sunshine days in May
Kollupitiya, Sri Lanka

Average sunshine days in May - Kollupitiya, Sri Lanka
  • Average sunshine days in May: 1.3 days

The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).

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Average UV index in May
Kollupitiya, Sri Lanka

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

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

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Average cloud cover in May
Kollupitiya, Sri Lanka

Average cloud cover in May - Kollupitiya, Sri Lanka
  • Average cloud cover in May: 54

The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).

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Average visibility in May
Kollupitiya, Sri Lanka

Average visibility in May - Kollupitiya, Sri Lanka
  • Average visibility in May: 9km

The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).

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Kollupitiya, Sri Lanka

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