Alotau Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Alotau, Papua Region, Papua New Guinea. This average is based on long-term data collected between 1990 and 2020. Now, let's explore all the details to give you a full picture.
Alotau has a notably wet climate with abundant precipitation, recording 3079 mm (121 in) of rainfall per year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Alotau offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between February (331 mm (13 in)) and July (193 mm (7.6 in)) is not too significant, making the climate enjoyable for visitors and residents alike.
February, the wettest month, has a maximum daytime temperature of 31°C (88°F). During the driest month July you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Alotau Temperature page.
Explore Alotau's Historical Precipitation: 2001-2026
Browse day-by-day precipitation records for Alotau spanning 26 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Papua New Guinea: City Comparison
The map below shows the annual precipitation across Papua New Guinea. You can also select the different months in case you are interested in a specific month.
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Alotau vs World: Rainfall Compared
Alotau's average annual precipitation is 3079 mm (121 in). Let's compare this to some popular worldwide tourist destinations:
The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.
Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
The proximity of a location to a large body of water can significantly affect its rainfall patterns:
- Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
- Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Alotau's weather, including sunshine hours, humidity levels, and temperature data, visit our Alotau Climate page.
