January weather forecast
Moratuwa, Sri Lanka

Starting the year, Moratuwa, Sri Lanka experiences predominantly warm and humid conditions with occasional bouts of rainfall. While the city enjoys a fair amount of sunshine, a considerable cloud cover intermittently overshadows the skies. Air and sea temperatures remain uniformly warm, making it a pleasant month for outdoor activities. January reports the lowest rainfall of 25mm (0.98") among the early months of the year, providing relatively less dampness. Winds in January are active, providing a refreshing breeze across the city at 12.2km/h (7.6mph).

Temperature

January experiences an average high-temperature of a hot 30.3°C (86.5°F), barely different from December's 29.7°C (85.5°F). In January, Moratuwa reports a consistent average low-temperature of 23.4°C (74.1°F) during the nights.

Heat index

The heat index in January is appraised at a torrid 37°C (98.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. 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 75%.

Rainfall

January is the month with the least rainfall in Moratuwa, Sri Lanka. Rain falls for 8.9 days and accumulates 25mm (0.98") of precipitation.

Sea temperature

In January, the average sea temperature in Moratuwa is 27.7°C (81.9°F).
Note: Water temperatures from 25°C (77°F) to 29°C (84.2°F) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.

Daylight

In Moratuwa, the average length of the day in January is 11h and 47min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:05. On the last day of January, in Moratuwa, sunrise is at 06:28 and sunset at 18:18 +0530.

Sunshine

January has the most sunshine of the year in Moratuwa, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index in Moratuwa are January through April, July, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in January leads to these recommendations:
Shield from overexposure. Defense against sun-related harm is required. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Warning! Sand and water reflections boost the intensity of UV exposure.