Last updated: August 31, 2025
January in Port Moresby, Papua New Guinea, brings a warm and humid climate, with maximum temperatures reaching 33°C (91°F) and an average of 27°C (81°F). Visitors can expect a significant amount of rainfall, totaling 276 mm (10.9 in) across 22 days, making it one of the wetter months of the year. With an average humidity level of 83%, the air feels quite tropical, encouraging travelers to explore the lush surroundings while staying prepared for occasional downpours. This vibrant weather not only enhances the rich natural beauty of the region but also contributes to its lush vegetation, making January an enchanting yet wet time to experience Port Moresby.
In January, Port Moresby, Papua New Guinea, experiences a warm tropical climate, with temperatures ranging from a comfortable 23°C (74°F) at night to a sizzling 33°C (91°F) during the day, resulting in an average of 27°C (81°F). This pattern of warm temperatures continues into February, maintaining similar lows and highs, indicating a stable tropical climate. As March rolls in, temperatures begin to slightly decline, with a maximum drop to 32°C (89°F), yet the warm nights persist. The trend of decreasing max temperatures continues into April and May, dipping down to the 31°C (88°F) mark, while average temperatures hover around 26°C (80°F). June and July see a further slight cooling, with maximums around 30°C (86°F), and a shift towards more pleasant evenings as nights drop to the low 20s°C. This mild reprieve is short-lived, as August and September stabilize around similar comfortable conditions. As the year winds down, October and November bring back warmer days, peaking again at 33°C (91°F), while December mirrors January, ensuring that the tropical charm of Port Moresby remains consistent throughout the year.
In January, Port Moresby experiences a significant amount of precipitation, with the city receiving an impressive 276 mm (10.9 in) of rainfall over 22 days. This substantial figure marks one of the wettest months of the year, setting the tone for an overall trend of moisture, particularly stark in comparison to the drier months that follow. As the rainy season progresses into February, the precipitation notably decreases to 200 mm (7.9 in), yet the frequency of rain remains high with 21 days wet. The pattern continues as March takes over, showcasing the highest monthly total at 307 mm (12.1 in), leading into a generally wet first quarter that precedes the drier conditions of late May through July, where rainfall dips significantly. Thus, January not only embodies the peak of the rainy season but also encapsulates the transition into a gradually drying climate throughout the year.
In Port Moresby, Papua New Guinea, January sets the tone for a humid year, boasting an average humidity of 83%. This trend of elevated moisture continues into February and March, where levels rise slightly to 84%. As the months progress toward the peak rainy season, humidity climbs steadily, peaking in May and June at an impressive 88%. Following this peak, the humidity begins a gradual decline, tapering to 80% by September and hovering around 81% in the later months of the year. Overall, the data reveals a clear progression towards increasing humidity during the early months, followed by a gentle decrease as the year winds down, reflecting the characteristic tropical climate of the region.
In January, Port Moresby experiences an extreme UV Index of 15, meaning sun exposure can lead to burns in just 10 minutes. This trend of high UV levels continues throughout the year, with February and March maintaining an even more intense index of 16. As the months roll on, the UV Index dips slightly in May to 12 but quickly rises again, hovering around 15 to 16 from July to November, before stabilizing in December. Notably, while June and July see a marginal decrease, the exposure category remains categorized as extreme for most of the year, emphasizing the importance of sun protection for residents and visitors alike. For more detailed information, check out the Port Moresby UV Index.
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In January, Port Moresby basks in 212 hours of sunshine, marking the beginning of a vibrant year. As the months progress, the sun steadily shines more brightly, with February showcasing a delightful increase to 251 hours. This upward trend continues through March and April, maintaining a warm and inviting atmosphere for both locals and visitors. By the time we reach May, the city enjoys a generous 286 hours of sunlight, ushering in the peak of the dry season. This pattern of increasing sunshine persists, culminating in a brilliant December with 297 hours, making it the sunniest month of the year. Overall, the trend highlights an inviting progression of sunny days, perfect for outdoor adventures and enjoying the natural beauty of Papua New Guinea.
In Port Moresby, January brings a modest 7% chance of sunny weather, making it one of the less favorable months for sun seekers. As we progress through the year, a clear trend emerges: the likelihood of sunshine steadily increases, reaching a peak of 43% in November. Following January, February offers an even slimmer 5%, but conditions begin to improve significantly by March, climbing to a 10% chance and finally reaching 12% in April. The real transformation occurs mid-year, where by June, the sun's presence enjoys a boost to 34%. This upward trajectory continues, ultimately culminating in late spring and early summer, when October and November deliver the sunniest days. Thus, for those planning a visit, it’s best to consider the latter half of the year for a higher probability of bright, sunny skies in Port Moresby.
In Port Moresby, Papua New Guinea, January ushers in the new year with a consistent 12 hours of daylight, a pattern that continues through February and March. This period of ample sunlight provides a vibrant backdrop for outdoor activities and exploration. As the months progress into April, daylight hours begin to wane slightly, settling at 11 hours from April through August. This subtle shift is typical of the region, as seasonal changes influence the length of day. However, a return to 12 hours of daylight occurs in September and remains steady through the end of the year, creating a rhythmic cycle that perfectly encapsulates the tropical climate. Whether basking in the longer days of summer or adjusting to the shorter ones, residents and visitors can always count on a robust amount of daylight in this picturesque locale.
In January, Port Moresby experiences a gentle breeze with an average wind speed of 2.6 m/s (6 mph), setting a calm tone for the month. This tranquil air lingers into February, where winds pick up slightly to 2.9 m/s. As we move into the following months, the winds begin to strengthen, peaking in September with an average of 5.0 m/s (11 mph), showcasing a noticeable trend towards increased breeze as the year progresses. May and August bring notably brisk conditions at 4.1 m/s (9 mph) and 4.2 m/s (9 mph) respectively, hinting at a seasonal transition where the winds invigorate the tropical atmosphere. As the year draws to a close, the winds settle back to a more languid pace in November and December, each averaging 2.2 m/s (5 mph), wrapping up the year with a return to serenity.
Weather in Port Moresby varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Port Moresby, focusing on differences in temperature, rainfall, humidity, and UV levels.
January and February in Port Moresby exhibit striking similarities in temperatures, with both months featuring a minimum of 23°C (73-74°F), an average of 27°C (81°F), and a maximum of 33°C (91°F). However, January is wetter, receiving 276 mm (10.9 in) of precipitation over 22 days, compared to February's 200 mm (7.9 in) across 21 days. Additionally, humidity levels are slightly higher in February at 84%, compared to January’s 83%. For more details on the February weather, check out Port Moresby weather in February.
In comparing the weather of January and March, we see that both months have similar temperature ranges, with January slightly warmer at a maximum of 33°C (91°F) compared to March's 32°C (89°F). Humidity levels remain consistent, with January at 83% and March slightly higher at 84%. However, March experiences more significant precipitation, with 307 mm (12.1 in) over 28 days, compared to January's 276 mm (10.9 in) over 22 days. This suggests that March may feel wetter and more humid than January. For more details, you can visit Port Moresby weather in March.
In January, the weather in Port Moresby is characterized by warmer temperatures, with a minimum of 23°C (74°F) and an average of 27°C (81°F), reaching a maximum of 33°C (91°F). This month also sees significant precipitation, totaling 276 mm (10.9 in) over 22 days, accompanied by high humidity levels of 83%. In contrast, April features slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 26°C (80°F), while the maximum temperature is 31°C (88°F). Precipitation decreases to 215 mm (8.5 in), occurring on 24 days, and humidity rises to 86%. For a more detailed look at April's weather, you can visit Port Moresby weather in April.
In January, the weather in Port Moresby is generally warmer with an average temperature of 27°C (81°F) and maximum highs reaching 33°C (91°F), accompanied by significant rainfall at 276 mm (10.9 in) over 22 days. The humidity is also quite high, sitting at 83%. By contrast, May brings slightly cooler conditions with an average temperature of 26°C (80°F) and maximums of 31°C (89°F). Precipitation decreases significantly to 95 mm (3.8 in) across 13 days, although humidity remains high at 88%. This shift in weather emphasizes the transition from the rainy season to a drier period. For more details on May weather, you can check Port Moresby weather in May.
In January, the weather is characterized by warmer temperatures, with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 33°C (91°F). This month also experiences significant rainfall, totaling 276 mm (10.9 in) over approximately 22 days, contributing to a high humidity level of 83%. In contrast, June brings a cooler climate, with temperatures ranging from a minimum of 21°C (70°F) to an average of 26°C (79°F) and a maximum of 30°C (87°F). Precipitation in June is considerably lower at 63 mm (2.5 in), falling over just 9 days, while the humidity remains relatively high at 88%. For more detailed insights, you can refer to Port Moresby weather in June.
In January, the weather is notably warmer, with average temperatures reaching 27°C (81°F) and highs that can soar to 33°C (91°F). However, this month also brings significant rainfall, averaging 276 mm (10.9 in) over approximately 22 days, along with a humidity level of 83%. In contrast, July experiences milder temperatures, with an average of 25°C (78°F) and maximums of 30°C (86°F), accompanied by much less precipitation, totaling only 45 mm (1.8 in) over 8 days, and a slightly higher humidity of 87%. For more details, you can check out Port Moresby weather in July.
In comparing the weather of January and August, January exhibits warmer temperatures with a minimum of 23°C (74°F), an average of 27°C (81°F), and a maximum of 33°C (91°F). In contrast, August's temperatures are cooler, with a minimum of 21°C (69°F), averaging 25°C (78°F), and peaking at 30°C (86°F). January also experiences significantly higher precipitation, totaling 276 mm (10.9 in) over 22 days, compared to August's 58 mm (2.3 in) across just 10 days. Despite these differences, humidity levels remain relatively high, at 83% in January and 85% in August. For more detailed information, you can visit Port Moresby weather in August.
January and September showcase distinct differences in weather in Port Moresby. In January, temperatures are warmer, with averages reaching 27°C (81°F) and a maximum of 33°C (91°F), while September brings cooler averages at 25°C (78°F) and a max of 30°C (87°F). Additionally, January is characterized by high precipitation, receiving 276 mm (10.9 in) over 22 days, compared to September, which has a significantly lower rainfall total of 81 mm (3.2 in) across just 11 days. Humidity remains relatively high in both months, with January at 83% and September slightly lower at 80%. For a more detailed look at September's weather, visit Port Moresby weather in September.
In January, temperatures in Port Moresby reach a minimum of 23°C (74°F), with an average of 27°C (81°F) and a maximum of 33°C (91°F). The month is characterized by high humidity at 83% and significant precipitation, totaling 276 mm (10.9 in) over approximately 22 days. In contrast, October sees slightly cooler temperatures, with a minimum of 21°C (70°F), an average of 26°C (79°F), and a maximum of 31°C (88°F). Rainfall is also reduced in October, with only 119 mm (4.7 in) falling over 17 days and humidity at a still considerable 81%. For more details, you can check the Port Moresby weather in October.
In January, the weather is characterized by warmer temperatures with a minimum of 23°C (74°F) and an average of 27°C (81°F), similar to November's figures but slightly higher. Both months experience a maximum temperature of 33°C (91°F); however, January is much wetter, receiving 276 mm (10.9 in) of precipitation over 22 days, compared to November's 130 mm (5.1 in) over just 17 days. Humidity levels are also slightly higher in January at 83%, compared to November’s 81%. For a more detailed look at November's weather, you can check out Port Moresby weather in November.
January and December in Port Moresby share similar temperatures, with both months recording a minimum of 23°C (73°F) and an average of 27°C (81°F). However, January tends to be wetter, receiving 276 mm (10.9 in) of precipitation compared to December's 169 mm (6.7 in). Both months experience 22 days of precipitation and maintain a consistent humidity level of 83%. Thus, while the temperature remains stable throughout, January is notably rainier than December. For more detailed weather information, you can check Port Moresby weather in December.
As January unfolds in Port Moresby, the weather showcases its unique character, marked by higher humidity levels and significant precipitation. With an average temperature sitting comfortably at around 27°C (81°F), this month tends to be warmer and wetter compared to other months, bringing with it a distinctive tropical feel. The city experiences about 22 rainy days, which can make outdoor plans a bit tricky but also contributes to the lush greenery that Papua New Guinea is known for. If you're interested in a more comprehensive look at the weather throughout the year, be sure to check out Port Moresby Climate.