# Climate Insights for Hagi

*Source: [Airpult](https://airpult.com/climate/jp/hagi/1473105039): Hagi Shi, Yamaguchi, Japan*

The climate in Hagi is temperate. The average annual temperature is 17°C and approximately 1782mm of precipitation falls per year. Hagi receives a notable amount of rainfall throughout the year, including during its driest month. Hagi 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 4°C. Light snow can occur between January and December.

## Key insights

- **Hottest month:** August (peak 31°C)
- **Coldest month:** January (low 4°C)
- **Wettest month:** July (252 mm)

## Monthly climate data

The table below shows monthly climate averages for Hagi 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.

| Month | Avg low (°C) | Avg high (°C) | Mean (°C) | Precip (mm) | Wind (km/h) | Snow (cm) |
| --- | ---: | ---: | ---: | ---: | ---: | ---: |
| Jan | 4 | 9 | 6 | 88 | 14 | 12 |
| Feb | 4 | 9 | 7 | 92 | 15 | 8 |
| Mar | 8 | 14 | 11 | 131 | 14 | 1 |
| Apr | 12 | 18 | 15 | 134 | 13 | 0 |
| May | 16 | 22 | 19 | 135 | 12 | 0 |
| Jun | 20 | 26 | 23 | 225 | 11 | 0 |
| Jul | 24 | 30 | 27 | 252 | 11 | 0 |
| Aug | 25 | 31 | 28 | 226 | 11 | 0 |
| Sep (current) | 22 | 28 | 24 | 229 | 12 | 0 |
| Oct | 16 | 22 | 19 | 100 | 12 | 0 |
| Nov | 10 | 17 | 13 | 80 | 12 | 0 |
| Dec | 5 | 11 | 8 | 90 | 14 | 5 |

## Temperature

Temperatures in Hagi vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 4°C and an average of 6°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

## Precipitation

Hagi is a fairly wet location, receiving approximately 1782mm of precipitation annually, which averages out to around 148mm per month. The wettest month is July, averaging 252mm of rainfall. September and August also tend to see above-average precipitation. The driest month is November, with just 80mm. That's 172mm less than July, 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 December, totalling around 26cm annually. January is the snowiest month with approximately 12cm.

## Wind

Hagi is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h 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 14km/h in winter, 13km/h in spring, 11km/h in summer, 12km/h in autumn.

## Seasons

Currently it is **summer** (astronomical) / **fall** (meteorological) in Hagi.
Autumn begins September 23, 2026 (3 days from now).

| Season | Begins |
| --- | --- |
| Spring | March 20 |
| Summer | June 21 |
| Autumn | September 23 |
| Winter | December 21 |

It is currently summer in Hagi, which began on June 21, 2026. Hagi 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 31°C, while the coldest stretch bottoms out in January near 4°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

### Spring

Temperatures range from 8 to 22°C. Rainfall is heavy, totalling around 400mm across the season with a monthly average of 133mm. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

### Summer

Temperatures range from 20 to 31°C. Rainfall is heavy, totalling around 703mm across the season with a monthly average of 234mm. Winds are generally light, averaging 11km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

### Autumn

Temperatures range from 10 to 28°C. Rainfall is heavy, totalling around 409mm across the season with a monthly average of 136mm. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

### Winter

Temperatures range from 4 to 11°C. Precipitation is moderate at around 269mm for the season, averaging 90mm per month. Expect around 25cm of snow accumulation during this period. Winds are generally light, averaging 14km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.