Climate normals · 1970–2000
Iwatsuki Climate
Iwatsuki is a city in Japan (34) with a population of about 108,833. Its average annual temperature is 14.8°C (59°F), with roughly 1339 mm of rain per year.
14.8°C
Avg Temp
1339
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
Iwatsuki Climate
Iwatsuki has an average annual temperature of 14.8°C (59°F) and receives about 1339 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
14.8°C
Avg Temp
1339
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 4° / 39° | 34 mm |
| February | 5° / 40° | 51 mm |
| March | 8° / 46° | 84 mm |
| April | 14° / 56° | 107 mm |
| May | 18° / 65° | 123 mm |
| June | 21° / 71° | 167 mm |
| July | 25° / 77° | 153 mm |
| August | 27° / 80° | 158 mm |
| September | 23° / 73° | 195 mm |
| October | 17° / 62° | 158 mm |
| November | 11° / 52° | 73 mm |
| December | 6° / 43° | 36 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Iwatsuki
The most comfortable months to visit Iwatsuki are typically June, May and September, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 30°C high). The coldest is January (near -1°C low). September is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Iwatsuki are typically June, May and September, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Iwatsuki, Japan has an average annual temperature of 14.8°C and about 1339 mm of precipitation per year. The warmest month is August and the coldest is January.
In August, the hottest month, daily highs in Iwatsuki average about 30°C (87°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.