January weather forecast
Deraniyagala, Sri Lanka

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Weather in January

January, like December, in Deraniyagala, Sri Lanka, is another warm winter month, with an average temperature fluctuating between 29.3°C (84.7°F) and 18.8°C (65.8°F).

Temperature

With the advent of January, Deraniyagala experiences an average high-temperature of a still warm 29.3°C (84.7°F), mirroring a close resemblance to the previous month. During the month of January, the temperature falls to an average of 18.8°C (65.8°F).

Heat index

During January, the heat index is evaluated at a sweltering 36°C (96.8°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. 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.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The months with the lowest humidity in Deraniyagala are January and February, with an average relative humidity of 80%.

Rainfall

January is the month with the least rainfall. Rain falls for 18.9 days and accumulates 85mm (3.35") of precipitation.

Daylight

The average length of the day in January is 11h and 46min.
On the first day of January, sunrise is at 06:19 and sunset at 18:03. On the last day of the month, sunrise is at 06:27 and sunset at 18:16 +0530.

Sunshine

In January, the average sunshine in Deraniyagala is 8.3h.

UV index

The months with the highest UV index in Deraniyagala are January through August, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 6 in January leads to these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
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Frequently asked questions

How hot does it get in Deraniyagala in January?

The high-temperature in Deraniyagala during January is 29.3°C (84.7°F) and the low-temperature is 18.8°C (65.8°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in January is evaluated at 36°C (96.8°F).

What is the least humid month in Deraniyagala?

January and February, with an average relative humidity of 80%, are the least humid months in Deraniyagala, Sri Lanka.

What is the average humidity in January in Deraniyagala?

In January, the average relative humidity is 80%.

What is the driest month in Deraniyagala?

The month with the least rainfall is January, when the rain falls for 18.9 days and typically collects 85mm (3.35") of precipitation.

How many days does it rain in January in Deraniyagala?

In Deraniyagala, in January, it is raining for 18.9 days, with typically 85mm (3.35") of accumulated precipitation.

What is the average length of the day in January in Deraniyagala?

In Deraniyagala, the average day length in January is 11h and 46min.

When is the sunrise / sunset in January in Deraniyagala?

In January, on the first day of the month, sunrise is at 06:19 and sunset at 18:03. On the last day of the month, in Deraniyagala, Sri Lanka, sunrise is at 06:27 and sunset at 18:16 +0530.

How many hours of sunshine does Deraniyagala have in January?

In Deraniyagala, the average sunshine duration in January is 8.3h.

What are the months with the highest UV index in Deraniyagala?

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

How high is the UV index in January in Deraniyagala?

In Deraniyagala, Sri Lanka, the average daily maximum UV index in January is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Deraniyagala, Sri Lanka

Average temperature in January - Deraniyagala, Sri Lanka
  • Average high temperature in January: 29.3°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 January: 18.8°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).

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Average pressure in January
Deraniyagala, Sri Lanka

Average pressure in January - Deraniyagala, Sri Lanka
  • Average pressure in January: 1011.6mbar

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 January
Deraniyagala, Sri Lanka

Average wind speed in January - Deraniyagala, Sri Lanka
  • Average wind speed in January: 4.2km/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).

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Average humidity in January
Deraniyagala, Sri Lanka

Average humidity in January - Deraniyagala, Sri Lanka
  • Average humidity in January: 80%

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

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Average rainfall in January
Deraniyagala, Sri Lanka

Average rainfall in January - Deraniyagala, Sri Lanka
  • Average rainfall in January: 85mm

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

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Average rainfall days in January
Deraniyagala, Sri Lanka

Average rainfall days in January - Deraniyagala, Sri Lanka
  • Average rainfall days in January: 18.9 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).

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Average daylight in January /
Average sunshine in January
Deraniyagala, Sri Lanka

Average daylight in January / Average sunshine in January - Deraniyagala, Sri Lanka
  • Average daylight in January: 11h and 5min

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 January: 8h and 2min

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).

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Average sunshine days in January
Deraniyagala, Sri Lanka

Average sunshine days in January - Deraniyagala, Sri Lanka
  • Average sunshine days in January: 9.2 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).

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Average UV index in January
Deraniyagala, Sri Lanka

Average UV index in January - Deraniyagala, Sri Lanka
  • Average UV index in January: 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).

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Average cloud cover in January
Deraniyagala, Sri Lanka

Average cloud cover in January - Deraniyagala, Sri Lanka
  • Average cloud cover in January: 33

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

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Average visibility in January
Deraniyagala, Sri Lanka

Average visibility in January - Deraniyagala, Sri Lanka
  • Average visibility in January: 8km

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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Deraniyagala, Sri Lanka

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