January weather forecast
Port Moresby, Papua New Guinea

The commencement of the year in Port Moresby, Papua New Guinea, witnesses a tropical monsoon climate. The rainfall reaches 156mm (6.14"), an indication that January experiences hefty precipitation. Amidst this, residents enjoy sunlight for almost nine hours per day, the high temperature sitting comfortably around the late 20s°C. The seaside beckons with a warm sea temperature, immediately noticeable to every swimmer. The early year in Port Moresby is evidently a blend of rain and sun.

Temperature

The onset of January in Port Moresby brings with it an average high-temperature of a moderately hot 29.8°C (85.6°F), showing a negligible variation from the month before. During January, Port Moresby's temperature falls to a steady low-temperature average of 24.4°C (75.9°F).

Heat index

The heat index in January is appraised at a fiery hot 35°C (95°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Understand that the heat index values take into account shaded locations and mild winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

January and February, with an average relative humidity of 73%, are the least humid months in Port Moresby, Papua New Guinea.

Rainfall

In Port Moresby, in January, it is raining for 23.4 days, with typically 156mm (6.14") of accumulated precipitation. In Port Moresby, during the entire year, the rain falls for 249.8 days and collects up to 1311mm (51.61") of precipitation.

Sea temperature

January is the month with the warmest seawater, with an average sea temperature of 29.7°C (85.5°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In January, the average length of the day is 12h and 36min.
On the first day of January, sunrise is at 05:54 and sunset at 18:34. On the last day of the month, sunrise is at 06:08 and sunset at 18:40 +10.

Sunshine

The average sunshine in January in Port Moresby is 8.9h.

UV index

January, March through May, October through December, with an average maximum UV index of 7, are months with the highest UV index in Port Moresby. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in January, converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! Sand and water reflections contribute to a stronger UV exposure.