Honmachi climate
Honmachi (Japan) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 17 °C63 °F, and about 2,326 mm92 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Honmachi climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1051 | 337 | 744 | 732.9 |
| Feb | 1254 | 439 | 847 | 1114.4 |
| Mar | 1660 | 643 | 1152 | 1395.5 |
| Apr | 2069 | 1151 | 1660 | 1666.5 |
| May | 2576 | 1660 | 2068 | 2058.1 |
| Jun | 2781 | 2068 | 2475 | 45618 |
| Jul | 3087 | 2475 | 2781 | 40116 |
| Aug | 3189 | 2476 | 2882 | 2168.5 |
| Sep | 2984 | 2170 | 2577 | 2389.4 |
| Oct | 2475 | 1560 | 2067 | 1275.0 |
| Nov | 1865 | 1050 | 1457 | 1054.1 |
| Dec | 1254 | 540 | 947 | 893.5 |
| Year | 3189 | 337 | 1763 | 2,32692 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 69% | 2.4 | 10:14 |
| Feb | 80% | 66% | 3.1 | 10:59 |
| Mar | 79% | 65% | 4.1 | 11:54 |
| Apr | 78% | 65% | 4.9 | 12:57 |
| May | 80% | 69% | 5.2 | 13:49 |
| Jun | 85% | 81% | 4.3 | 14:16 |
| Jul | 86% | 71% | 4.9 | 14:05 |
| Aug | 84% | 62% | 5.2 | 13:20 |
| Sep | 84% | 64% | 4.4 | 12:19 |
| Oct | 82% | 55% | 3.7 | 11:19 |
| Nov | 82% | 58% | 2.8 | 10:26 |
| Dec | 82% | 64% | 2.2 | 10:01 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Honmachi is like
The warmest month is August, with an average high of 31 °C89 °F and a low of 24 °C76 °F. The coldest is January, when highs average 10 °C51 °F and lows 3 °C37 °F. Seasons are strongly marked: the warmest month is on average 21.4 °C38.6 °F warmer than the coldest.
It is very wet, receiving about 2,326 mm92 in of precipitation per year. The wettest three-month stretch is June–August, which brings 46% of the annual total. The wettest month is June (456 mm18 in), the driest is January (73 mm2.9 in).
Relative humidity ranges from 78% in April to 86% in July. The clearest skies (lowest average cloud amount, 55%) are typical of October. Average wind speed near the ground ranges from 4 km/h (3 mph) in August to 6 km/h (4 mph) in March. Daylight lasts from about 10.0 hours in December to 14.3 hours in June.
Best time to visit Honmachi
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October and November: average highs of 18 °C65 °F to 24 °C75 °F with 105 mm4.1 in to 127 mm5.0 in of precipitation per month.
The most challenging month is June, which is very wet (456 mm18 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Honmachi
- Winter (December–February) — highs 1051 to 12 °C54 °F, lows 337 to 5 °C40 °F, about 91 mm3.6 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Spring (March–May) — highs 1660 to 25 °C76 °F, lows 643 to 16 °C60 °F, about 170 mm6.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
- Summer (June–August) — highs 2781 to 31 °C89 °F, lows 2068 to 24 °C76 °F, about 357 mm14 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 1865 to 29 °C84 °F, lows 1050 to 21 °C70 °F, about 157 mm6.2 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
How Honmachi compares
Compared with Kumamoto, about 35 km to the north, Honmachi is on average 0.5 °C1 °F warmer and receives 9% more precipitation (2,326 mm92 in vs 2,130 mm84 in). The difference is largest in February (0.8 °C1.5 °F warmer).
Of the 111 places in Japan covered by World Climates, Honmachi is the 13th warmest by annual mean temperature and the 5th wettest by annual precipitation. See all of them on the Japan climate page.
Places in other countries with the most similar temperature and rainfall pattern: Cixi (China, Cfa), Ningbo (China, Cfa) and Taizhou (China, Cfa).
Nearby places
- Kumamoto 35 km · 17 °C62 °F · 2,130 mm84 in
- Ōmuta 60 km · 17 °C62 °F · 2,130 mm84 in
- Isahaya 64 km · 16 °C61 °F · 2,078 mm82 in
- Nagasaki 72 km · 17 °C62 °F · 2,078 mm82 in
- Saga 86 km · 17 °C62 °F · 2,078 mm82 in
- Miyakonojō 96 km · 18 °C64 °F · 2,642 mm104 in
- Nobeoka 100 km · 19 °C66 °F · 2,344 mm92 in
- Miyazaki 101 km · 17 °C63 °F · 2,770 mm109 in
Frequently asked questions
What is the warmest month in Honmachi?
August is the warmest month in Honmachi, with an average high of 31 °C (89 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Honmachi?
January is the coldest month, with an average high of 10 °C (51 °F) and an average low of 3 °C (37 °F).
When does it rain the most in Honmachi?
June is the wettest month with about 456 mm (18.0 in) of precipitation; January is the driest with about 73 mm (2.9 in).
What is the best time to visit Honmachi?
Judging by long-term averages, the most comfortable months are October and November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 259 m, while Honmachi lies at about 6 m. Temperatures on this page were therefore adjusted by +1.6 °C3 °F using the standard lapse rate of 6.5 °C per 1,000 m.