Climate Insights for Hitachi

The climate in Hitachi is temperate. The average annual temperature is 15°C and approximately 1533mm of precipitation falls per year. Hitachi receives a notable amount of rainfall throughout the year, including during its driest month. Hitachi is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to 3°C. Light snow can occur between January and March.

Temperatures in Hitachi vary considerably across the year, with a 25°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 3°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Hitachi is a fairly wet location, receiving approximately 1533mm of precipitation annually, which averages out to around 128mm per month. The wettest month is September, averaging 194mm of rainfall. October and August also tend to see above-average precipitation. The driest month is December, with just 57mm. That's 137mm less than September, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and March, totalling around 17cm annually. January is the snowiest month with approximately 6cm.

Hitachi is mildly breezy, with an average annual wind speed of 19km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 22km/h in winter, 20km/h in spring, 16km/h in summer, 18km/h in autumn.

It is currently spring in Hitachi, which began on March 20, 2026. Hitachi is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 28°C, while the coldest stretch bottoms out in January near 3°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Hitachi based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.