Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
Stepping into January, Weeraketiya records an average high-temperature of a hot 30.2°C (86.4°F), almost consistent with December. January nights are marked by an average temperature drop to a warm 23°C (73.4°F).Heat index
In January, the heat index is estimated at a sweltering 37°C (98.6°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The months with the lowest humidity are January and February, with an average relative humidity of 77%.Rainfall
January is the month with the least rainfall. Rain falls for 12.3 days and accumulates 22mm (0.87") of precipitation.Daylight
In January, the average length of the day is 11h and 49min.On the first day of the month, sunrise is at 06:17 and sunset at 18:03. On the last day of January, sunrise is at 06:24 and sunset at 18:16 +0530.
Sunshine
In January, the average sunshine is 8.9h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: During January, 7 as the daily maximum UV index converts into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in January?
What are the least humid months in Weeraketiya?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many hours of daylight does Weeraketiya have in January?
What time are sunrise and sunset in January in Weeraketiya?
How long on average sun shines in January?
What are the months with the highest UV index?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Weeraketiya, Sri Lanka
- Average high temperature in January: 30.2°C
The warmest months (with the highest average high temperature) are March and April (31.1°C).
The month with the lowest average high temperature is September (29.1°C).
- Average low temperature in January: 23°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°C).
Average pressure in January
Weeraketiya, Sri Lanka
- Average pressure in January: 1011.4mbar
The month with the highest atmospheric pressure is January (1011.4mbar).
The month with the lowest atmospheric pressure is May (1008.9mbar).
Average wind speed in January
Weeraketiya, Sri Lanka
- Average wind speed in January: 9km/h
The windiest month (with the highest average wind speed) is July (18.9km/h).
The calmest month (with the lowest average wind speed) is January (9km/h).
Average humidity in January
Weeraketiya, Sri Lanka
- Average humidity in January: 77%
The months with the highest relative humidity are May, September and November (81%).
The months with the lowest relative humidity are January and February (77%).
Average rainfall in January
Weeraketiya, Sri Lanka
- Average rainfall in January: 22mm
The wettest month (with the highest rainfall) is November (66mm).
The driest month (with the least rainfall) is January (22mm).
Average rainfall days in January
Weeraketiya, Sri Lanka
- Average rainfall days in January: 12.3 days
The month with the highest number of rainy days is November (19.8 days).
The month with the least rainy days is June (10.7 days).
Average daylight in January /
Average sunshine in January
Weeraketiya, 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 48min).
- Average sunshine in January: 8h and 5min
The month with the most sunshine is April (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in January
Weeraketiya, Sri Lanka
- Average sunshine days in January: 16.5 days
The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is November (7.8 days).
Average UV index in January
Weeraketiya, Sri Lanka
- Average UV index in January: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in January
Weeraketiya, Sri Lanka
- Average cloud cover in January: 27
The month with the most cloud cover is June (Cloud cover 53).
The month with the least cloud cover is February (Cloud cover 26).
Average visibility in January
Weeraketiya, Sri Lanka
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
