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Hachinohe Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Hachinohe, Aomori, Japan. This average is based on long-term data collected between 1990 and 2020. Let's explore the details to provide you with a complete overview.

Hachinohe has a relatively rain/snowy climate with high precipitation levels, averaging 1117 mm (44 in) of rain/snowfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Hachinohe can be quite wet during August, receiving approximately 140 mm (5.5 in) of precipitation over 19 rainy days.

In contrast January, experiences much drier conditions, with 56 mm (2.2 in) of snow/rainfall, spread across 26 snowy/rainy days.

August, the wettest month, has a maximum daytime temperature of 28°C (82°F). The city receives 169 hours of sunshine in this period. During the driest month January you can expect a temperature of 3°C (37°F). For more detailed insights into the city's temperatures, visit our Hachinohe Temperature page.

Annual Rainfall in Japan: City Comparison

The map below shows the annual precipitation across Japan. You can also select the different months in case you are interested in a specific month.

Annual
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Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Hachinohe vs World: Rainfall Compared

Hachinohe's average annual precipitation is 1117 mm (44 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm (25 in), evenly distributed across the year with no extreme wet or dry seasons.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

How is Precipitation Measured?

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.

Global Precipitation Patterns

Tropical Rainforests: In tropical regions, rainfall is generally abundant year-round. Areas near the equator, like the Amazon rainforest, can receive up to 3000 mm (118 in) of rain annually.

Desert Regions: Deserts such as the Sahara and Arabian deserts typically see less than 250 mm (9.8 in) of rainfall annually. Rainfall tends to be infrequent, but when it does occur, it is often intense.

Temperate Zones: In temperate regions, precipitation tends to be more evenly distributed, though areas closer to the ocean may see more rain in the winter months, and areas further inland experience drier summers.

Polar Regions: Precipitation in polar regions, like Antarctica, is extremely low, often falling as snow. Average annual precipitation in Antarctica is less than 200 mm (7.9 in), with some areas receiving as little as 50 mm (2 in) annually.

Interesting weather facts

  • The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
  • Approximately 70% of lightning bolts strike land rather than oceans.
  • A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

For more detailed information about Hachinohe's weather, including sunshine hours, humidity levels, and temperature data, visit our Hachinohe Climate page.


Current rainfall in Hachinohe

More climate data for Hachinohe