Miyakonojō climate
Miyakonojō is warmest in August, with average highs of 30 °C, and coldest in January, when nights average 3.0 °C. June is the wettest month (462 mm) and December the driest (79 mm). Figures are 1991–2020 climate normals.
Across a full year Miyakonojō averages 2,241 mm of rain, 122 days above 25 °C and 10 days below freezing.
Japan · population 161,137 · 1991–2020 normals
Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month
- Warmest month August 30 °C
- Coldest month January 3.0 °C
- Driest month December 79 mm
- Wettest month June 462 mm
- Least cloud December 47 % cloud
- Hottest on record August 38 °C
- Coldest on record January -4.9 °C
What to expectMiyakonojō through the year
Miyakonojō has a clear annual cycle: average daily highs run from 11 °C in January to 30 °C in August, a swing of 20 °C in mean temperature across the year.
Counted across a normal year, 122 days a year reach 25 °C, 35 of them reach 30 °C, 10 nights drop below freezing. The warmest reading in the 1991–2020 record is 38 °C, in August.
Rain is strongly seasonal. June averages 462 mm against 79 mm in December — 5.8 times as much. Planning around the dry months matters more here than planning around temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 10.9 °C | 86 mm | 51 % |
| February | 12.3 °C | 104 mm | 56 % |
| March | 15.6 °C | 158 mm | 62 % |
| April | 19.8 °C | 184 mm | 66 % |
| May | 23.6 °C | 203 mm | 73 % |
| June | 25.8 °C | 462 mm | 86 % |
| July | 29.6 °C | 285 mm | 76 % |
| August | 30.1 °C | 198 mm | 69 % |
| September | 27.5 °C | 235 mm | 67 % |
| October | 23.2 °C | 138 mm | 53 % |
| November | 18.2 °C | 109 mm | 51 % |
| December | 13.0 °C | 79 mm | 47 % |
Temperature month by month
| Month | Avg high | Avg low | Mean | Record high | Record low | Days above 25 °C | Days above 30 °C | Days below 0 °C |
|---|---|---|---|---|---|---|---|---|
| January | 10.9 °C | 3.0 °C | 6.5 °C | 20.5 °C | -4.9 °C | 0 | 0 | 4 |
| February | 12.3 °C | 4.0 °C | 7.8 °C | 21.9 °C | -4.4 °C | 0 | 0 | 3 |
| March | 15.6 °C | 7.2 °C | 11.0 °C | 25.0 °C | -1.0 °C | 0 | 0 | 0 |
| April | 19.8 °C | 11.5 °C | 15.3 °C | 27.4 °C | 1.6 °C | 1 | 0 | 0 |
| May | 23.6 °C | 15.8 °C | 19.4 °C | 31.1 °C | 7.8 °C | 9 | 0 | 0 |
| June | 25.8 °C | 20.0 °C | 22.5 °C | 31.8 °C | 12.9 °C | 18 | 1 | 0 |
| July | 29.6 °C | 23.6 °C | 26.2 °C | 35.5 °C | 18.0 °C | 30 | 15 | 0 |
| August | 30.1 °C | 24.0 °C | 26.6 °C | 37.5 °C | 19.3 °C | 31 | 15 | 0 |
| September | 27.5 °C | 21.3 °C | 24.0 °C | 33.7 °C | 13.5 °C | 26 | 3 | 0 |
| October | 23.2 °C | 16.1 °C | 19.2 °C | 31.0 °C | 4.1 °C | 8 | 0 | 0 |
| November | 18.2 °C | 10.6 °C | 14.0 °C | 26.8 °C | 0.5 °C | 0 | 0 | 0 |
| December | 13.0 °C | 5.1 °C | 8.6 °C | 22.0 °C | -3.4 °C | 0 | 0 | 2 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 86 mm | 8 | 10 h/day | 51 % | 75 % | 14 km/h |
| February | 104 mm | 9 | 11 h/day | 56 % | 75 % | 14 km/h |
| March | 158 mm | 13 | 12 h/day | 62 % | 76 % | 14 km/h |
| April | 184 mm | 12 | 13 h/day | 66 % | 77 % | 14 km/h |
| May | 203 mm | 12 | 14 h/day | 73 % | 80 % | 13 km/h |
| June | 462 mm | 21 | 14 h/day | 86 % | 88 % | 13 km/h |
| July | 285 mm | 20 | 14 h/day | 76 % | 87 % | 13 km/h |
| August | 198 mm | 19 | 13 h/day | 69 % | 86 % | 13 km/h |
| September | 235 mm | 16 | 12 h/day | 67 % | 84 % | 12 km/h |
| October | 138 mm | 10 | 11 h/day | 53 % | 80 % | 12 km/h |
| November | 109 mm | 9 | 11 h/day | 51 % | 79 % | 11 km/h |
| December | 79 mm | 7 | 10 h/day | 47 % | 76 % | 13 km/h |
How Miyakonojō compares
The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.
| Destination | Summer high | Winter low | Rain per year | Days above 25 °C |
|---|---|---|---|---|
| Miyakonojō | 30 °C | 3.0 °C | 2,241 mm | 122 |
| Miyazaki · Japan | 30 °C | 5.3 °C | 2,257 mm | 113 |
| Kagoshima · Japan | 30 °C | 5.8 °C | 2,212 mm | 128 |
| Kumamoto · Japan | 30 °C | 3.0 °C | 1,953 mm | 118 |
Planning a trip? See the best time to visit Miyakonojō.
QuestionsCommon questions about Miyakonojō’s climate
When is the best time to visit Miyakonojō?
That depends on what you want, so the honest answer is a comparison rather than a single month. May, June, October sit closest to 20 °C on average, August is the warmest month and December the driest. The month-by-month table above has the full picture.
How hot does Miyakonojō get?
In August, the warmest month, daily highs average 30 °C. About 35 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.
How cold does it get in winter?
Nights average 3.0 °C in January, the coldest month. A normal year has 10 nights below freezing.
Which month is wettest in Miyakonojō?
June, averaging 462 mm over 21 days with rain. The driest month is December with 79 mm. The year as a whole averages 2,241 mm.
Are these figures a forecast?
No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Miyakonojō rather than what any particular week will bring. Individual years can differ substantially from the normal.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.