Ulithi Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Ulithi, Yap, Micronesia. Long-term data from 1990 to 2020 was used to calculate these averages. Now, let's break down all the details for a clearer picture.
Ulithi experiences significant rainfall throughout the year, averaging 2747 mm (108 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct rainy season during certain months. You can clearly see this in our monthly precipitation graphs below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Ulithi can be quite wet during August, receiving approximately 354 mm (14 in) of precipitation over 18 rainy days.
In contrast February, experiences much drier conditions, with 122 mm (4.8 in) of rainfall, spread across 20 rainy days.
August, the wettest month, has a maximum daytime temperature of 30°C (86°F). During the driest month February you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Ulithi Temperature page.
Annual Rainfall in Micronesia: City Comparison
The map below shows the annual precipitation across Micronesia. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Ulithi vs World: Rainfall Compared
Ulithi's average annual precipitation is 2747 mm (108 in). Let's compare this to some popular worldwide tourist destinations:
New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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.
Climate change is affecting precipitation patterns worldwide, including Ulithi:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- "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 Ulithi's weather, including sunshine hours, humidity levels, and temperature data, visit our Ulithi Climate page.
